ES2564880T3 - Method for drying clothes contained in a clothes dryer and clothes dryer that implements said method - Google Patents

Method for drying clothes contained in a clothes dryer and clothes dryer that implements said method Download PDF

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ES2564880T3
ES2564880T3 ES14382047.0T ES14382047T ES2564880T3 ES 2564880 T3 ES2564880 T3 ES 2564880T3 ES 14382047 T ES14382047 T ES 14382047T ES 2564880 T3 ES2564880 T3 ES 2564880T3
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drum
clothes
air flow
speed
rotation
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Romualdo Agilaga Sadurni
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Fagor Electrodomesticos SCL
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14Arrangements for detecting or measuring specific parameters
    • D06F34/26Condition of the drying air, e.g. air humidity or temperature
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00Domestic laundry dryers
    • D06F58/32Control of operations performed in domestic laundry dryers 
    • D06F58/34Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28Air properties
    • D06F2103/34Humidity
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48Drum speed
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/62Stopping or disabling machine operation

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

Abstract

Método para secar la ropa contenida en una secadora de ropa (1), comprendiendo dicha secadora de ropa (1) un tambor (2) rotatorio apto para contener ropa y comprendiendo el método una fase de secado en la que un flujo de aire (F) es forzado a circular por el interior de dicho tambor (2) rotatorio mientras el tambor (2) rotatorio se hace girar inicialmente según una primera velocidad de rotación predeterminada, caracterizado porque dicha fase de secado comprende al menos una subfase de barrido de velocidades en la que se hace girar el tambor (2) a distintas velocidades, midiéndose y registrándose el grado de humedad del aire de salida correspondiente a cada velocidad, y al final de dicha al menos una subfase de barrido se hace girar el tambor (2) rotatorio según la velocidad correspondiente al mayor grado de humedad medido.Method for drying the clothes contained in a clothes dryer (1), said clothes dryer (1) comprising a rotating drum (2) suitable for containing clothes and the method comprising a drying phase in which an air flow (F ) is forced to circulate inside said rotary drum (2) while the rotary drum (2) is initially rotated according to a first predetermined rotation speed, characterized in that said drying phase comprises at least one subphase of speed sweeping in that the drum (2) is rotated at different speeds, the degree of humidity of the output air corresponding to each speed is measured and recorded, and at the end of said at least one scanning subphase the rotating drum (2) is rotated according to the speed corresponding to the highest degree of humidity measured.

Description

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DESCRIPCIONDESCRIPTION

“Metodo para secar la ropa contenida en una secadora de ropa y secadora de ropa que implementa dicho“Method for drying clothes contained in a clothes dryer and clothes dryer that implements said

metodo”method"

SECTOR DE LA TECNICATECHNICAL SECTOR

La presente invencion se relaciona con metodos para secar la ropa de una secadora de ropa que comprende un tambor rotatorio. Tambien se relaciona con una secadora de ropa que implementa dicho metodo.The present invention relates to methods for drying the clothes of a clothes dryer comprising a rotary drum. It is also related to a clothes dryer that implements this method.

ESTADO ANTERIOR DE LA TECNICAPREVIOUS STATE OF THE TECHNIQUE

Son conocidas secadoras de ropa que comprenden un tambor rotatorio y por el interior del cual circula un flujo de aire forzado por un ventilador que extrae la humedad de la ropa contenida en el tambor.Clothes dryers are known which comprise a rotating drum and inside which a forced air flow circulates through a fan that extracts moisture from the clothes contained in the drum.

EP2468950 A1 divulga una secadora de ropa que comprende un tambor rotatorio para contener ropa. Por el interior de dicho tambor circula un flujo de aire que es forzado a traves de un ventilador dispuesto cerca de la entrada de aire. Tambien comprende un sensor de temperatura dispuesto a la salida del tambor y un sensor de humedad dispuesto en el interior del tambor. La secadora tambien comprende medios de control que ejecutan un programa de secado que comprende una fase de secado en la que se hace girar el tambor segun una primera velocidad de rotacion. Durante la fase de secado los medios de control monitorizan la temperatura del aire de salida, gracias al sensor de temperatura, y el grado de humedad de la ropa contenida en el tambor gracias al sensor de humedad. Cuando el sensor de humedad detecta un grado de humedad en la ropa igual o menor que un valor umbral de humedad prefijado se hace girar el tambor segun una segunda velocidad de rotacion que es mayor que la primera velocidad. Dicha segunda velocidad de rotacion es igual o mayor que la velocidad minima requerida para mantener la ropa adherida a las paredes del tambor.EP2468950 A1 discloses a clothes dryer comprising a rotary drum for containing clothes. Inside this drum circulates an air flow that is forced through a fan arranged near the air inlet. It also comprises a temperature sensor disposed at the outlet of the drum and a humidity sensor disposed inside the drum. The dryer also comprises control means that execute a drying program comprising a drying phase in which the drum is rotated according to a first rotation speed. During the drying phase the control means monitor the temperature of the outlet air, thanks to the temperature sensor, and the degree of humidity of the clothes contained in the drum thanks to the humidity sensor. When the humidity sensor detects a degree of moisture in the clothes equal to or less than a predetermined humidity threshold value, the drum is rotated according to a second rotation speed that is greater than the first speed. Said second rotation speed is equal to or greater than the minimum speed required to keep the clothes adhered to the walls of the drum.

US6141887 A divulga una secadora de ropa que comprende un tambor giratorio para alojar ropa mojada, calentadores electricos para el calentamiento de la ropa, un sensor de temperatura para detectar la temperatura en el tambor giratorio y un sensor de humedad absoluta para detectar la humedad absoluta en el tambor giratorio. Los valores de humedad absoluta son detectados y almacenados en una memoria intermedia de modo que los calentadores electricos pueden ser controlados en respuesta a la salida del sensor de humedad absoluta, en comparacion con los valores almacenados.US6141887 A discloses a clothes dryer comprising a rotating drum for housing wet clothes, electric heaters for heating clothes, a temperature sensor for detecting the temperature in the rotating drum and an absolute humidity sensor for detecting absolute humidity in The rotating drum Absolute humidity values are detected and stored in a buffer so that electric heaters can be controlled in response to the absolute humidity sensor output, compared to stored values.

EP0428846 A1 divulga una secadora de tambor que comprende un tambor giratorio, medios de calentamiento y un sensor de humedad que detecta la cantidad de humedad del aire que fluye desde el tambor. El contenido de humedad mas alta detectada durante el proceso de secado es almacenada para compararla despues con una senal con el fin de interrumpir el calentamiento del flujo de aire si la diferencia entre el contenido de humedad detectado y el contenido de humedad maximo detectada alcanza un valor predeterminado.EP0428846 A1 discloses a drum dryer comprising a rotating drum, heating means and a humidity sensor that detects the amount of moisture in the air flowing from the drum. The highest moisture content detected during the drying process is stored for later comparison with a signal in order to interrupt the heating of the air flow if the difference between the moisture content detected and the maximum moisture content detected reaches a value predetermined.

EP1975303 A1 divulga un metodo para secar la ropa en una secadora de ropa. La maquina de secado comprende un tambor giratorio para contener la ropa y un ciclo de secado. Durante el ciclo de secado, la velocidad de rotacion del tambor es variable desde un primer valor de la velocidad predefinida hasta una secuencia de velocidades sucesivas. Los valores de dichas velocidades sucesivas van disminuyendo progresivamente. El primer valor de la velocidad de rotacion es seleccionado de modo que el tambor gira de manera que la ropa con un alto contenido de humedad es volteada adecuadamente, es decir, el primer valor de la velocidad de rotacion es mayor que la velocidad de rotacion a la que la ropa tiende a apelotonarse en la parte inferior del tambor.EP1975303 A1 discloses a method of drying clothes in a clothes dryer. The drying machine comprises a rotating drum to hold the clothes and a drying cycle. During the drying cycle, the speed of rotation of the drum is variable from a first value of the predefined speed to a sequence of successive speeds. The values of these successive speeds are progressively decreasing. The first value of the rotation speed is selected so that the drum rotates so that clothes with a high moisture content are properly turned, that is, the first value of the rotation speed is greater than the rotation speed at the one that clothes tends to clump on the bottom of the drum.

EXPOSICION DE LA INVENCIONEXHIBITION OF THE INVENTION

El objeto de la invencion es el de proporcionar un metodo para secar la ropa de una secadora de ropa y una secadora de ropa que implementa dicho metodo tal y como se describe a continuacion.The object of the invention is to provide a method for drying the clothes of a clothes dryer and a clothes dryer that implements said method as described below.

Un aspecto de la invencion se refiere al metodo de secar la ropa. Dicho metodo comprende una fase de secado en la que un flujo de aire es forzado a circular por el interior de un tambor rotatorio, que es apto para contener ropa, mientras se hace girar inicialmente dicho tambor segun una primera velocidad de rotacion predeterminada. La fase de secado tambien comprende al menos una subfase de barrido de velocidades en la que se hace girar el tambor a distintas velocidades midiendose y registrandose el grado de humedad del aire de salida correspondiente a cada velocidad. Al final de dicha subfase de barrido se hace girar el tambor rotatorio segun laOne aspect of the invention relates to the method of drying clothes. Said method comprises a drying phase in which an air flow is forced to circulate inside a rotating drum, which is suitable for holding clothes, while said drum is initially rotated according to a first predetermined rotational speed. The drying phase also comprises at least one subphase of speed sweeps in which the drum is rotated at different speeds by measuring and recording the degree of humidity of the output air corresponding to each speed. At the end of said scanning subphase the rotating drum is rotated according to the

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velocidad correspondiente al mayor grado de humedad medido.speed corresponding to the highest degree of humidity measured.

Otro aspecto de la invencion se refiere a una secadora de ropa. Dicha secadora comprende el tambor rotatorio que es apto para contener la ropa a secar y por el cual circula un flujo de aire forzado. La secadora de la invencion tambien comprende medios sensores, comprendiendo al menos un sensor de humedad, dispuestos a la salida del tambor rotatorio para determinar el grado de humedad del flujo de aire que sale del tambor, medios de ventilacion adecuados para forzar la circulacion de dicho flujo de aire, estando dichos medios de ventilacion dispuestos a la salida del tambor, y medios de control asociados a los medios sensores. Dichos medios de control implementan el metodo de secado segun lo descrito en el parrafo anterior.Another aspect of the invention relates to a clothes dryer. Said dryer comprises the rotary drum that is suitable for containing the clothes to be dried and through which a forced air flow circulates. The dryer of the invention also comprises sensing means, comprising at least one humidity sensor, arranged at the exit of the rotating drum to determine the degree of humidity of the air flow leaving the drum, adequate ventilation means to force the circulation of said air flow, said ventilation means being disposed at the outlet of the drum, and control means associated with the sensor means. Said control means implement the drying method as described in the previous paragraph.

Con el metodo y la secadora de ropa de la invencion se consigue acortar el tiempo de ciclo de la fase de secado debido a que se optimiza la extraccion del contenido de agua de la ropa del tambor de una manera sencilla, eficaz y economica, contribuyendo de este modo a mejorar la eficiencia de la secadora. La subfase de barrido permite establecer la velocidad de rotacion del tambor optima para que se extraiga la mayor cantidad de humedad posible de la ropa contenida en el tambor. Como las condiciones de la ropa vanan a lo largo de la fase de secado (la cantidad de agua y el peso de la ropa vanan a medida que se va secando la ropa) la subfase de barrido se puede repetir a lo largo de dicha fase de secado para mejorar la eficiencia.With the method and the clothes dryer of the invention it is possible to shorten the cycle time of the drying phase because the extraction of the water content of the drum clothes is optimized in a simple, efficient and economical manner, contributing to This mode will improve the efficiency of the dryer. The subphase of scanning allows to establish the speed of rotation of the optimum drum so that as much moisture as possible can be extracted from the clothes contained in the drum. As the conditions of the clothes go along the drying phase (the amount of water and the weight of the clothes go as the clothes are drying) the subphase of sweeping can be repeated throughout said phase of drying to improve efficiency.

Estas y otras ventajas y caractensticas de la invencion se haran evidentes a la vista de las figuras y de la descripcion detallada de la invencion.These and other advantages and features of the invention will become apparent in view of the figures and the detailed description of the invention.

DESCRIPCION DE LOS DIBUJOS La figura 1 muestra un esquema de una realizacion de la secadora de ropa segun la invencion.DESCRIPTION OF THE DRAWINGS Figure 1 shows a scheme of an embodiment of the clothes dryer according to the invention.

EXPOSICION DETALLADA DE LA INVENCIONDETAILED EXHIBITION OF THE INVENTION

La secadora de ropa 1 segun la realizacion de la invencion de la figura 1 comprende un tambor 2 rotatorio que gira segun un eje axial 9, tal y como se muestra en la figura, y por el cual circula un flujo de aire F forzado. Dicho tambor 2 es apto para contener ropa, preferentemente ropa que previamente ha sido lavada, por ejemplo en una lavadora, y que por consiguiente contiene un cierto grado de humedad. La secadora de ropa 1 tambien comprende medios sensores dispuestos a la salida del tambor 2. Dichos medios sensores comprenden al menos un sensor de humedad 5 y determinan el grado de humedad del flujo de aire F que sale del tambor 2. Unos medios de control comprendidos en la secadora 1 y que estan asociados a dichos medios sensores implementan un metodo de secado tal y como se describe a continuacion.The clothes dryer 1 according to the embodiment of the invention of Figure 1 comprises a rotating drum 2 that rotates along an axial axis 9, as shown in the figure, and through which a forced air flow F flows. Said drum 2 is suitable for containing clothes, preferably clothes that have previously been washed, for example in a washing machine, and which therefore contains a certain degree of moisture. The clothes dryer 1 also comprises sensor means arranged at the outlet of the drum 2. Said sensor means comprise at least one humidity sensor 5 and determines the degree of humidity of the air flow F leaving the drum 2. Control means comprised in the dryer 1 and which are associated with said sensor means they implement a drying method as described below.

El metodo para secar la ropa contenida en la secadora de ropa 1 comprende una fase de secado en la que el flujo de aire F es forzado a circular por el interior del tambor 2 rotatorio mientras se hace girar dicho tambor 2 inicialmente segun una primera velocidad de rotacion predeterminada. Dicha fase de secado comprende al menos una subfase de barrido de velocidades en la que se hace girar el tambor 2 a distintas velocidades, midiendose y registrandose el grado de humedad del aire de salida correspondiente a cada velocidad, y al final de dicha al menos una subfase de barrido se hace girar el tambor 2 rotatorio segun la velocidad correspondiente al mayor grado de humedad medido. Los valores de humedad correspondientes a cada velocidad de giro se registran en los medios de control para poder determinar cual es la velocidad correspondiente al mayor grado de humedad medido. De este modo, se consigue acortar el tiempo de ciclo de la fase de secado debido a que se optimiza la extraccion del contenido de agua de la ropa contenida en el tambor 2 de una manera sencilla, eficaz y economica, contribuyendo de este modo a mejorar la eficiencia de la secadora de ropa 1. La subfase de barrido permite establecer la velocidad de rotacion del tambor 2 optima para que se extraiga la mayor cantidad de humedad posible de la ropa del tambor 2. Como las condiciones de la ropa vanan a lo largo de la fase de secado (la cantidad de agua y el peso de la ropa vanan a medida que se va secando la ropa) la subfase de barrido se puede repetir a lo largo de dicha fase de secado para que la mejora sea optima, tal y como se detalla mas adelante.The method for drying the clothes contained in the clothes dryer 1 comprises a drying phase in which the air flow F is forced to circulate inside the rotary drum 2 while said drum 2 is rotated initially according to a first speed of default rotation. Said drying phase comprises at least one speed scanning subphase in which the drum 2 is rotated at different speeds, the degree of humidity of the output air corresponding to each speed being measured and recorded, and at the end of said at least one Scanning subphase the rotating drum 2 is rotated according to the speed corresponding to the highest degree of humidity measured. The humidity values corresponding to each speed of rotation are recorded in the control means in order to determine the speed corresponding to the highest degree of humidity measured. In this way, it is possible to shorten the cycle time of the drying phase because the extraction of the water content of the clothes contained in the drum 2 is optimized in a simple, efficient and economical way, thus contributing to improve the efficiency of the clothes dryer 1. The scanning subphase allows to establish the optimum rotation speed of the drum 2 so that the greatest possible amount of moisture is removed from the clothes of the drum 2. As the conditions of the clothes go along of the drying phase (the amount of water and the weight of the clothes go as the clothes are drying) the subphase of sweeping can be repeated throughout said drying phase so that the improvement is optimal, such and as detailed below.

La fase de secado tambien comprende una pluralidad de etapas de giro en donde el tambor 2 rotatorio gira en sentido de giros opuestos en etapas de giro sucesivas. Es decir, si en una etapa de giro el tambor 2 gira segun un sentido de giro A, por ejemplo en sentido horario, en la etapa de giro sucesiva el tambor 2 girara segun el sentido de giro inverso B, es decir en sentido antihorario. Cada etapa de giro puede durar entre aproximadamente un minuto y aproximadamente un minuto y medio. Las sucesivas etapas de giro estan separadas entre sf por una pausa en donde el tambor deja de rotar el tiempo suficiente como para que el tambor pueda cambiar el sentido de giro. El tambor 2 antes y despues del cambio del sentido de giro gira a la misma velocidad, es decir, el tambor 2 despues del cambio del sentido de giro empieza a girar segun la velocidad deThe drying phase also comprises a plurality of rotation stages wherein the rotating drum 2 rotates in the direction of opposite turns in successive rotation stages. That is, if in a rotation stage the drum 2 rotates according to a direction of rotation A, for example clockwise, in the successive rotation stage the drum 2 will rotate according to the reverse direction of rotation B, that is counterclockwise. Each turning stage can last between about a minute and about a minute and a half. The successive stages of rotation are separated from each other by a pause where the drum stops rotating long enough for the drum to change the direction of rotation. Drum 2 before and after changing the direction of rotation rotates at the same speed, that is, drum 2 after changing the direction of rotation begins to rotate according to the speed of

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giro de la etapa de giro anterior al cambio. Los cambios de giro resultan ventajosos para asegurar que la ropa contenida en el tambor 2 rotatorio no se quede apelmazada entre s^ o adherida a las paredes del tambor 2.turn of the turn stage before the change. Turning changes are advantageous to ensure that the clothes contained in the rotating drum 2 do not get caked together or adhered to the walls of the drum 2.

La subfase de barrido se lleva a cabo dentro de una etapa de giro y durante la fase de secado dicha subfase de barrido se repite cada dos, tres o cuatro etapas de giro sucesivas, preferentemente cada tres. Al repetir la subfase de barrido a lo largo de la fase de secado se consigue optimizar la extraccion de agua de la ropa contenida en el tambor 2 durante el ciclo de secado total, lo cual permite mejorar la eficiencia de la secadora de ropa 1 y reducir el tiempo de ciclo total, contribuyendo de este modo a ahorrar el consumo energetico de la secadora de ropa 1.The scanning subphase is carried out within a turning stage and during the drying phase said scanning subphase is repeated every two, three or four successive turning stages, preferably every three. By repeating the scanning subphase throughout the drying phase, it is possible to optimize the extraction of water from the clothes contained in the drum 2 during the total drying cycle, which allows to improve the efficiency of the clothes dryer 1 and reduce the total cycle time, thus contributing to saving the energy consumption of the clothes dryer 1.

Cuando se ha de llevar a cabo la subfase de barrido en la etapa de giro correspondiente, una vez de que la etapa de giro ha comenzado se espera un tiempo prudencial no muy elevado, por ejemplo entre 6 y 10 segundos, antes de iniciar la subfase de barrido para asegurar que dicha subfase de barrido no interfiere con el cambio del sentido de giro entre etapas sucesivas.When the scanning subphase is to be carried out in the corresponding turning stage, once the turning stage has begun a reasonable time is not expected, for example between 6 and 10 seconds, before starting the subphase scanning to ensure that said scanning subphase does not interfere with changing the direction of rotation between successive stages.

Las distintas velocidades, es decir el abanico de velocidades, de la subfase de barrido son elegidas en un rango de velocidades entre 20 y 80 revoluciones por minuto. El numero del abanico de velocidades sera el maximo posible que garantice que durante la misma etapa de giro el tambor 2 pueda rotar segun todas las velocidades de dicho abanico de velocidades, leer el dato del grado de humedad del flujo de aire F de salida correspondiente a cada velocidad de giro y registrar dicho valor. En la realizacion preferente de la invencion las distintas velocidades de giro son velocidades prefijadas. En un ejemplo no limitativo, las distintas velocidades de giro podnan ser siete velocidades distintas por ejemplo con los siguientes valores:The different speeds, that is to say the fan of speeds, of the scanning subphase are chosen in a range of speeds between 20 and 80 revolutions per minute. The number of the speed fan will be the maximum possible that guarantees that during the same turning stage the drum 2 can rotate according to all the speeds of said speed fan, read the data of the degree of humidity of the output air flow F corresponding to each speed of rotation and register said value. In the preferred embodiment of the invention the different turning speeds are preset speeds. In a non-limiting example, the different speeds of rotation could be seven different speeds for example with the following values:

Vi = 24 rpm V2= 30 rpm V3= 34 rpm V4= 38 rpm V5= 45 rpm V6= 52 rpm V7= 64 rpmVi = 24 rpm V2 = 30 rpm V3 = 34 rpm V4 = 38 rpm V5 = 45 rpm V6 = 52 rpm V7 = 64 rpm

Opcionalmente, la primera velocidad del rango de velocidades de la subfase de barrido de la etapa de giro correspondiente podna ser una velocidad calculada en funcion, entre otros, del grado de humedad del aire de salida y del peso de la ropa contenida en el tambor 2, y el resto de las velocidades de dicha subfase podnan ser calculadas sumando, o restando, una cantidad prefijada.Optionally, the first speed of the speed range of the scanning subphase of the corresponding turning stage could be a speed calculated as a function, inter alia, of the degree of humidity of the outlet air and the weight of the clothing contained in the drum 2 , and the rest of the speeds of said subphase may be calculated by adding, or subtracting, a predetermined amount.

Tanto en una alternativa como en la otra, los medios de control de la secadora de ropa 1 registran los valores del grado de humedad, medidos por el sensor de humedad 5, del flujo de aire F de salida correspondiente a cada velocidad del abanico de velocidades de la subfase de barrido. De este modo, los medios de control determinan al final de cada subfase de barrido cual ha sido la velocidad de giro en la cual se ha extrafdo la mayor cantidad de agua de la ropa contenida en el tambor 2. Durante la subfase de barrido, el tambor 2 en cada velocidad del abanico de velocidades gira durante el mmimo tiempo posible en el cual se garantiza una lectura fiable del grado de humedad del flujo del aire de salida.In both an alternative and the other, the control means of the clothes dryer 1 record the humidity degree values, measured by the humidity sensor 5, of the output air flow F corresponding to each speed of the speed fan of the scanning subphase. In this way, the control means determine at the end of each scanning subphase which has been the speed of rotation in which the greatest amount of water has been extracted from the clothes contained in the drum 2. During the scanning subphase, the drum 2 at each speed of the speed fan rotates for the smallest possible time in which a reliable reading of the moisture level of the output air flow is guaranteed.

El flujo de aire F que circula por el interior del tambor 2 es forzado mediante unos medios de ventilacion dispuestos a la salida del tambor 2. Dichos medios de ventilacion comprenden preferentemente un ventilador 3. Los medios sensores descritos anteriormente se disponen detras de los medios de ventilacion tal y como se aprecia en el esquema de la figura 1, aunque tambien se contempla la posibilidad de que dispongan por delante de los medios de ventilacion.The air flow F circulating inside the drum 2 is forced by means of ventilation arranged at the outlet of the drum 2. Said ventilation means preferably comprise a fan 3. The sensor means described above are arranged behind the means of ventilation as seen in the scheme of figure 1, although the possibility of having them in front of the ventilation means is also contemplated.

La secadora de ropa 1 comprende un conducto de entrada 6 de aire donde un extremo de dicho conducto de entrada 6 esta abierto a la atmosfera y el otro extremo esta comunicado con el tambor 2 por un lateral de este, es decir por la pared del cilindro del tambor 2 correspondiente a la parte superior de la secadora de ropa 1. En otras realizaciones de la invencion el conducto de entrada 6 podna estar comunicado con el tambor 2 por la pared del cilindro del tambor 2 correspondiente a uno de los laterales de la secadora 1, o a ambos laterales, o incluso por la parte inferior de la secadora 1. Por lo tanto, dicho conducto de entrada 6, en la realizacion de la invencion, es apto para aportar un flujo de aire F sustancialmente radial al tambor. Dicho flujo de aire F radial se denomina asf porque entra al tambor 2 segun la direccion sustancialmente radial del tambor 2. La pared lateral del tambor 2 es decir, la pared del cilindro del tambor 2, comprende aperturas, preferentemente en forma de orificios distribuidos en dicha pared, que permiten la entrada de dicho flujo de aire F al tambor 2. La secadora de ropa 1 tambien comprende un conducto de salida 7 de aire. Un extremo de dicho conducto de salida 7 esta comunicado con el tambor 2, siendo dicho conducto de salida 7 apto para guiar el flujo de aire F que sale del tambor 2, a traves de las aperturas de las paredes del tambor 2, hacia el exterior. En dicho conducto de salida 7 de aire se ubican losThe clothes dryer 1 comprises an air inlet duct 6 where one end of said inlet duct 6 is open to the atmosphere and the other end is communicated with the drum 2 by a side thereof, that is to say by the cylinder wall of the drum 2 corresponding to the upper part of the clothes dryer 1. In other embodiments of the invention the inlet duct 6 could be connected to the drum 2 by the wall of the drum cylinder 2 corresponding to one of the sides of the dryer 1, or both sides, or even from the bottom of the dryer 1. Therefore, said inlet duct 6, in the embodiment of the invention, is capable of providing a substantially radial air flow F to the drum. Said radial air flow F is thus called because it enters the drum 2 according to the substantially radial direction of the drum 2. The side wall of the drum 2, that is, the wall of the drum cylinder 2, comprises openings, preferably in the form of holes distributed in said wall, which allows said air flow F to enter the drum 2. The clothes dryer 1 also comprises an air outlet duct 7. One end of said outlet duct 7 is communicated with the drum 2, said outlet duct 7 being able to guide the flow of air F leaving the drum 2, through the openings of the walls of the drum 2, towards the outside . In said air outlet duct 7 are located

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medios de ventilacion, es decir el ventilador 3, y los medios sensores, disponiendose los medios sensores detras de los medios de ventilacion tal y como ya se ha descrito anteriormente. Opcionalmente, el conducto de salida 7 tambien puede comprender un filtro 8 apto para retener la pelusa que pueda desprender la ropa contenida en el tambor 2 evitando asf que dicha pelusa salga al exterior. Preferentemente dicho filtro 8 se dispone previo al ventilador 3, reduciendose de este modo el riesgo de avenas del ventilador 3.ventilation means, that is the fan 3, and the sensor means, the sensor means being arranged behind the ventilation means as described above. Optionally, the outlet duct 7 can also comprise a filter 8 suitable for retaining the lint that can detach the clothing contained in the drum 2 thus preventing said lint from going outside. Preferably said filter 8 is arranged prior to the fan 3, thus reducing the risk of fan corn flakes 3.

El tambor 2 tambien comprende una pared trasera, no mostrada en las figuras, mientras que la parte frontal esta abierta para permitir la entrada, o la extraccion, de la ropa al tambor 2. Opcionalmente, en otra realizacion de la invencion no mostrada en las figuras, el flujo de aire F podna entrar al tambor 2 por dicha pared trasera, segun una direccion sustancialmente axial. Tambien se contempla la posibilidad de que el flujo de aire que entra al tambor 2 sea una mezcla entre una entrada radial y axial. Esta configuracion resulta especialmente ventajosa cuando la secadora de ropa comprende una entrada de aire fresca y una entrada de aire recirculada. Asf mismo, la secadora de ropa 1 comprende una puerta en la parte frontal (no mostrada en las figuras), preferentemente abatible o seccional. Por seccional se entiende que la puerta esta formada por secciones conectadas entre ellas preferentemente horizontalmente, abriendose la puerta, preferentemente verticalmente, al deslizarse entre grnas. Cuando la puerta esta abierta se tiene acceso al interior del tambor 2, pudiendo introducir o extraer la ropa del tambor 2. Cuando la puerta esta cerrada se posibilita que los medios de control implementen el metodo de secado descrito.The drum 2 also comprises a rear wall, not shown in the figures, while the front part is open to allow the entry, or removal, of the clothes into the drum 2. Optionally, in another embodiment of the invention not shown in the figures, the air flow F could enter the drum 2 through said rear wall, according to a substantially axial direction. The possibility that the flow of air entering the drum 2 is also a mixture between a radial and axial inlet is also contemplated. This configuration is especially advantageous when the clothes dryer comprises a fresh air inlet and a recirculated air inlet. Likewise, the clothes dryer 1 comprises a door in the front part (not shown in the figures), preferably folding or sectional. By sectional it is understood that the door is formed by sections connected to each other preferably horizontally, the door opening, preferably vertically, when sliding between grates. When the door is open you have access to the inside of the drum 2, being able to introduce or remove the clothes from the drum 2. When the door is closed it is possible for the control means to implement the drying method described.

Opcionalmente, el flujo de aire F de entrada puede ser previamente calentado para reducir el ciclo de secado total. Para ello, la secadora de ropa 1 puede comprender medios calefactores 4, tales como medios resistivos, medios de vapor o medios de gas, aptos para calentar, previo a la entrada en el tambor 2, al menos parte del flujo de aire. Dichos medios calefactores se disponen en el conducto de entrada 6.Optionally, the inlet air flow F can be preheated to reduce the total drying cycle. For this, the clothes dryer 1 can comprise heating means 4, such as resistive means, steam means or gas means, suitable for heating, prior to entering the drum 2, at least part of the air flow. Said heating means are arranged in the inlet duct 6.

La fase de secado de la secadora de ropa 1 de la realizacion de la invencion finaliza cuando el grado de humedad del flujo de aire de salida que sale del tambor 2 rotatorio se estabiliza en un valor inferior a un valor de humedad predefinido.The drying phase of the clothes dryer 1 of the embodiment of the invention ends when the degree of humidity of the outgoing air flow leaving the rotary drum 2 is stabilized at a lower value than a predefined humidity value.

Claims (12)

55 1010 15fifteen 20twenty 2525 3030 3535 4040 45Four. Five 50fifty 5555 REIVINDICACIONES 1. Metodo para secar la ropa contenida en una secadora de ropa (1), comprendiendo dicha secadora de ropa1. Method for drying clothes contained in a clothes dryer (1), said clothes dryer comprising (1) un tambor (2) rotatorio apto para contener ropa y comprendiendo el metodo una fase de secado en la que un flujo de aire (F) es forzado a circular por el interior de dicho tambor (2) rotatorio mientras el tambor(1) a rotary drum (2) suitable for holding clothes and the method comprising a drying phase in which an air flow (F) is forced to circulate inside said rotary drum (2) while the drum (2) rotatorio se hace girar inicialmente segun una primera velocidad de rotacion predeterminada, caracterizado porque dicha fase de secado comprende al menos una subfase de barrido de velocidades en la que se hace girar el tambor (2) a distintas velocidades, midiendose y registrandose el grado de humedad del aire de salida correspondiente a cada velocidad, y al final de dicha al menos una subfase de barrido se hace girar el tambor (2) rotatorio segun la velocidad correspondiente al mayor grado de humedad medido.(2) Rotary is initially rotated according to a first predetermined rotation speed, characterized in that said drying phase comprises at least one subphase of speed sweeping in which the drum (2) is rotated at different speeds, measuring and recording the degree of humidity of the output air corresponding to each speed, and at the end of said at least one scanning subphase the rotating drum (2) is rotated according to the speed corresponding to the highest degree of humidity measured. 2. Metodo segun la reivindicacion 1, en donde, durante la subfase de barrido, el tambor (2) gira en cada velocidad durante el menor tiempo posible en el que se asegura una lectura fiable del contenido de humedad del flujo de aire que sale.2. Method according to claim 1, wherein, during the scanning subphase, the drum (2) rotates at each speed for the shortest possible time in which a reliable reading of the moisture content of the air flow leaving is ensured. 3. Metodo segun la reivindicacion 1 o 2, en donde las distintas velocidades de la subfase de barrido son elegidas en un rango de velocidades entre 20 y 80 revoluciones por minuto.3. Method according to claim 1 or 2, wherein the different speeds of the scanning subphase are chosen in a range of speeds between 20 and 80 revolutions per minute. 4. Metodo segun cualquiera de las reivindicaciones anteriores, en donde la fase de secado comprende una pluralidad de etapas de giro en donde el tambor (2) rotatorio, en etapas de giro sucesivas, gira en sentido de giro opuestos de manera que en una etapa de giro el tambor (2) gira segun un sentido de giro (A) y en la etapa de giro sucesiva el tambor (2) gira segun el sentido inverso (B).4. Method according to any of the preceding claims, wherein the drying phase comprises a plurality of rotating stages wherein the rotating drum (2), in successive rotating stages, rotates in the opposite direction of rotation so that in one stage of rotation the drum (2) rotates according to a direction of rotation (A) and in the successive stage of rotation the drum (2) rotates according to the reverse direction (B). 5. Metodo segun la reivindicacion 3, en donde dos etapas de giro contiguas estan separadas por una pausa en donde el tambor (2) deja de rotar el tiempo suficiente como para que el tambor (2) pueda cambiar el sentido de giro y empiece a girar segun la misma velocidad de la etapa de giro anterior.5. Method according to claim 3, wherein two adjacent rotation stages are separated by a pause where the drum (2) stops rotating long enough for the drum (2) to change the direction of rotation and start turn according to the same speed of the previous turn stage. 6. Metodo segun las reivindicaciones 4 o 5, en donde la subfase de barrido se lleva a cabo dentro de una etapa de giro.6. Method according to claims 4 or 5, wherein the scanning subphase is carried out within a turning stage. 7. Metodo segun cualquiera de las reivindicaciones 4 a 6, en donde durante la fase de secado la subfase de barrido se repite cada dos, tres o cuatro etapas de giro, preferentemente cada tres.7. Method according to any of claims 4 to 6, wherein during the drying phase the scanning subphase is repeated every two, three or four stages of rotation, preferably every three. 8. Metodo segun cualquiera de las reivindicaciones anteriores, en donde la fase de secado finaliza cuando el grado de humedad del flujo de aire que sale del tambor (2) es igual o menor que un valor de humedad predefinido.8. Method according to any of the preceding claims, wherein the drying phase ends when the degree of humidity of the air flow leaving the drum (2) is equal to or less than a predefined humidity value. 9. Metodo segun cualquiera de las reivindicaciones anteriores, en donde el flujo de aire (F) que es forzado a circular por el interior del tambor (2) es previamente calentado.9. Method according to any of the preceding claims, wherein the air flow (F) that is forced to circulate inside the drum (2) is previously heated. 10. Secadora de ropa que comprende un tambor (2) rotatorio apto para contener ropa, y por el cual circula un flujo de aire (F) forzado, medios sensores comprendiendo al menos un sensor de humedad (5) dispuesto a la salida del tambor (2) que determinan el grado de humedad del flujo de aire que sale de dicho tambor (2), y medios de ventilacion adecuados para forzar la circulacion del flujo de aire (F), estando dichos medios de ventilacion dispuestos a la salida del tambor (2), caracterizada porque tambien comprende medios de control asociados a dichos medios sensores que implementan un metodo de secado segun cualquiera de las reivindicaciones 1 a 9.10. Clothes dryer comprising a rotary drum (2) suitable for containing clothes, and through which a forced air flow (F) circulates, sensing means comprising at least one humidity sensor (5) disposed at the drum outlet (2) that determine the degree of humidity of the air flow leaving said drum (2), and adequate ventilation means to force the circulation of the air flow (F), said ventilation means being arranged at the outlet of the drum (2), characterized in that it also comprises control means associated with said sensor means that implement a drying method according to any one of claims 1 to 9. 11. Secadora de ropa segun las reivindicaciones 10, en donde los medios de ventilacion comprenden un ventilador (3).11. Clothes dryer according to claims 10, wherein the ventilation means comprise a fan (3). 12. Secadora de ropa segun la reivindicacion 10 u 11, en donde la secadora de ropa (1) tambien comprende medios calefactores (4), tales como medios resistivos, medios de gas o batena de vapor o de aceite termico, aptos para calentar, previo a la entrada en el tambor (2), al menos parte del flujo de aire.12. Clothes dryer according to claim 10 or 11, wherein the clothes dryer (1) also comprises heating means (4), such as resistive means, gas or steam or thermal oil means, suitable for heating, prior to entering the drum (2), at least part of the air flow.
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DE69002494T2 (en) * 1989-03-24 1993-11-25 Sanyo Electric Co Method and device for controlling a clothes dryer.
SE464710B (en) * 1989-09-22 1991-06-03 Asko Cylinda Ab DRYER
US6141887A (en) * 1997-03-13 2000-11-07 General Electric Company System and method for sensing the dryness of clothing articles
EP1790769B1 (en) * 2005-11-23 2010-04-14 Electrolux Home Products Corporation N.V. Clothes tumble dryer and method for controlling the same
ATE459744T1 (en) * 2007-03-30 2010-03-15 Electrolux Home Prod Corp IMPROVEMENT TO A CLOTHES DRYER AND CORRESPONDING METHOD FOR DRYING CLOTHES
KR20120065628A (en) * 2010-12-13 2012-06-21 삼성전자주식회사 Dryer
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