EP3000924B1 - Procede de fonctionnement d'un seche -linge dote d'une protection contre le choc thermique et seche-linge adapte - Google Patents

Procede de fonctionnement d'un seche -linge dote d'une protection contre le choc thermique et seche-linge adapte Download PDF

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Publication number
EP3000924B1
EP3000924B1 EP15183672.3A EP15183672A EP3000924B1 EP 3000924 B1 EP3000924 B1 EP 3000924B1 EP 15183672 A EP15183672 A EP 15183672A EP 3000924 B1 EP3000924 B1 EP 3000924B1
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EP
European Patent Office
Prior art keywords
temperature
process air
water
glass door
drum
Prior art date
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Application number
EP15183672.3A
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German (de)
English (en)
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EP3000924A1 (fr
Inventor
Harald MOSCHÜTZ
Harald Pietsch
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication of EP3000924A1 publication Critical patent/EP3000924A1/fr
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/08—Humidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38—Time, e.g. duration
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/40—Opening or locking status of doors
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/30—Blowers
    • 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
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/76—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
    • D06F34/26—Condition of the drying air, e.g. air humidity or temperature
    • 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
    • D06F37/26—Casings; Tubs
    • D06F37/28—Doors; Security means therefor
    • 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
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door

Definitions

  • the invention relates to a method for operating a washer dryer with protection against thermal shock and a suitable washer-dryer. More particularly, the invention relates to a method of operating a washer dryer, wherein the washer dryer comprises a tub; a rotatably mounted in the tub drum with a closable glass door, the drum is used for receiving and removal of laundry with the glass door open; a control device and a process air duct in which a heater for heating air, a blower, and at least one temperature sensor for measuring a temperature T pc are.
  • the invention also relates to such a washer-dryer.
  • Washer dryers are popular because they combine the functions of a washing machine and a tumble dryer in a single device in a space-saving manner.
  • a washer-dryer is already provided with a water connection, so that water is not only available for washing laundry, but also for further treatment of laundry items.
  • thermo shock resistance is the maximum possible temperature difference, when used as a thermal shock, there is no bursting of the glass.
  • soda-lime glass generally used for corresponding access doors can no longer be used if it is to be possible that there is a rapid transition between a high temperature process air drying process and a cold water washing process and the temperature difference is 100 Kelvin or more. This can be remedied by the use of borosilicate glass. This is expensive.
  • High surface temperatures in a washer dryer can also pose a danger to a user.
  • the user's operation of the washer-dryer i. in the closed state of the access door, facing outside of the door glass often protected by an additional disc of glass or plastic.
  • an additional disc of glass or plastic In addition to protection against too high a surface temperature, in particular protection against cold shock caused by cold water, if possibly cold water would reach the outside of the access door.
  • a temperature shock can be caused by cold water that reaches the inside of the glass door. This is e.g. the case when a washing program is started by introducing cold water immediately after or during a drying process. Then cold water can be injected from the inside against the glass door or be transported through the laundry items from the bottom of the tub to the glass door.
  • the EP 2 636 788 A1 describes a clothes dryer comprising: a drum moving laundry items, a window glass openably disposed in front of the drum; a blower unit which sends dry air; a dehumidifying unit which dehumidifies the drying air discharged from the drum; a heating unit which heats the dehumidified drying air; a first air passage with a first air outlet, which is opened at a rear end of the drum to blow the drying air into the drum; a second air passage having a second air outlet opened in front of the drum for blowing the drying air into the drum; an air passage switching unit that selectively switches between the first and second air passages; a temperature detecting unit which detects a temperature of the window glass; and a control unit, wherein the control unit performs control such that switching is selectively performed between the first air passage and the second air passage by the air passage switching unit when the detection result of the temperature detecting unit reaches a first predetermined temperature. This is to ensure that items of laundry in the drum are not dried inconsistently
  • the EP 2 636 788 A1 also states that after a drying process, the high temperature glass door must be cooled before the dried laundry can be removed from the dryer. For this purpose, it is known to carry out a cooling process in order to cool a window glass. To EP 2 636 788 A1 For example, it is possible to operate the laundry dryer in which laundry items may be dried while at the same time controlling the temperature of the window glass so as to maintain a predetermined temperature at which the glass is not too hot for a user.
  • the CN 1521313 A describes a washer-dryer with a guide tube which guides the hot process air so that it does not come into direct contact with the glass door of the washer-dryer. This is to prevent damage to the glass door due to abrupt temperature changes and scalding a user of the washer dryer.
  • the DE 10 2012 207 742 A1 describes a method for operating a dryer with a program control, a drum for laundry to be dried, a process air duct in which a process air blower for conveying the process air and a heater for heating the process air, and with a variable speed drive motor, the drum and the process air blower drives, wherein the method comprises a heating phase, a quasi-stationary drying phase and a cooling phase, wherein in the quasi-stationary drying phase of the variable-speed drive motor is operated at a mean speed ⁇ 1 and the process air blower with a mean speed ⁇ 1 , and during the cooling phase at least temporarily the variable-speed drive motor with a speed ⁇ 2 is less than ⁇ 1 and the process air fan is operated at a speed ⁇ 1 .
  • the method is operated so that a maximum allowable temperature T max of the process air is not exceeded.
  • the US 2006/0137105 A1 describes a drying control method in a washer-dryer in which air is circulated in a drum so that the air passes successively through a tub, a condensation tube and a heating tube and in turn is fed inside the drum and dries laundry in the drum, comprising: Providing cooling water in the condensation tube for the condensation of moisture contained in the circulating air; Measuring a temperature of the cooling water dripping from the condensation tube into the tub or a temperature of the circulating air; and removing the cooling water from the tub to the outside when the temperature is higher than a predetermined temperature.
  • the heater is on (see Fig. 10, step S11).
  • the US 2013/0219741 A1 describes a washer-dryer with a housing; a tub attached to the housing; a drum rotatably mounted in the tub; a drying channel that heats air coming out of the tub to a predetermined temperature to return the heated air to the tub; an air-cooled condensing unit condensing moisture on at least a predetermined area of an inner peripheral surface of the tub; and a detection unit for detecting the amount of condensate generated in the tub. Described is in particular a drying process in which the applied drying temperature should not be too high, so that the heating is controlled accordingly. In addition, a method is provided by which the time of completion of the drying is determined by detecting a surface temperature of a tub during drying of laundry, and a corresponding drying method.
  • the object of the invention was to provide a method for operating a washer-dryer with improved protection against temperature shocks.
  • a protection of a glass door of the washer dryer from damage due to a high temperature shock should be achieved.
  • the task was also to show a suitable washer-dryer.
  • step (b) the cooling program is performed when T pc 1 > T pc lim .
  • the temperature sensor is located directly on the glass door or in its immediate vicinity, then it can directly measure the temperature of the glass door. However, it is also possible to use a temperature sensor that is significantly removed from the glass door. In such a case, before the measurement, the blower of the process air for a certain period .DELTA.t blow can be turned on to effect a temperature compensation along the process air duct and thus to ensure that the temperature sensor provides a signal significant for the temperature of the glass door.
  • the period .DELTA.t blow may not exceed a length of one minute and in particular be about 30 seconds.
  • the temperature of the glass door is measured with a temperature sensor T3 attached directly to it, an immediately suitable measured variable is available at any time in order to decide whether an additional cooling step has to be carried out. If the corresponding temperature sensor T1 or T2 is not located directly on the glass door, the temperature of the glass door can be determined indirectly by operating the process air blower for a short period of time, which in particular lasts less than one minute, preferably for about 30 seconds before the detection of a measured value becomes. This advantageously achieves a uniform temperature distribution in the process air duct so that the temperatures of the process air measured by the temperature sensors, for example T1 or T2, can be used as a representative measure of the temperature of the glass door.
  • the upper limit temperature T pc lim is to be selected as a function of the shock temperature ⁇ T shock corresponding to the material of the glass door.
  • the temperature T W-min can be set at 3 ° C, for example, in Central Europe.
  • it is also possible to determine the temperature of the fresh water T aq available in the concrete individual case by means of a correspondingly provided temperature sensor and the upper limit temperature then relevant for this individual case T pc lim T aq + ⁇ T shock set.
  • cooling program comprises a passage of process air through a heat exchanger arranged in the washer-dryer.
  • the cooling program aims to efficiently cool the process air and thereby the glass door. That is, in the method according to the invention in particular when reaching or exceeding the temperature T pc lim the process air is cooled. By applying the cooled process air then a cooling of the glass door can be achieved.
  • no cooling of the glass door is achieved in that the guidance of the process air in one or more process air ducts as in the EP 2 636 788 A1 is changed described.
  • process air according to the invention is not cooled by contact with laundry in order to use such a cooled process air for cooling a glass door.
  • the nature and design of the cooling program will generally depend on which means are available for cooling process air in the washer-dryer.
  • the type and design of the cooling program will generally depend on the way the water intended for washing from a water supply system enters the tub, in particular, whether the water can get in contact with the glass door in this way.
  • the condensate contained therein can additionally be used to cool excess process air by bringing the hot process air into contact with the condensate so that heat is exchanged. This can be further promoted by evaporation of condensate and therefore the withdrawal of heat of vaporization.
  • the cooling program comprises contacting the warm process air with water from a flushing device for a heat exchanger in the washer-dryer.
  • the cooling program for the process air comprises contacting the warm process air with water from a water supply system.
  • the amount of water used in the cooling program M c flows into the tub and is chosen so that it is smaller than the amount of water M b in the tub, which is necessary so that a lower end the drum dips into the water.
  • cooling programs using water as a coolant are particularly advantageous in that the water entering the tub and drum is heated, thereby reducing the risk of excessive temperature shocks.
  • step (c) the water heated by the warm process air from the flushing device and / or the water supply system is used for the execution of the washing program in step (c).
  • a method is preferred in which the temperature T pc lim is set as a function of a temperature T aq of the water in a water supply system such that a predetermined thermal shock resistance ⁇ T shock is not exceeded.
  • a relationship between the temperature T pc lim and the temperature T aq is generally stored in the control unit of the washer-dryer.
  • the thermal shock resistance ⁇ T shock depends on the composition of the glass material and the production process of the glass door. For commonly used soda lime glass, it is typically 100 Kelvin.
  • the temperature T aq of the water from a water supply system can be adjusted by a user of the washer dryer or measured via a arranged in the water supply system temperature sensor and fed to the control unit.
  • the drum is preferably rotated, e.g. at a speed in the range of 40 to 60 revolutions / min, in particular if it contains laundry items.
  • the drum is preferably operated in reversing mode.
  • the wash program in step (c) generally begins by passing water from the water supply system into the drum and tub. Before step (c), generally the rotation of the drum and / or the fan are switched off. The addition of water from the water supply system generally also causes cooling. In contrast, the cooling program of step (b) is generally already finished.
  • a temperature sensor T1 at a drum inlet, where process air enters the drum, a temperature sensor T2 at a drum outlet, where process air exits the drum, and / or a temperature sensor T3 are arranged directly on the glass door for measuring the temperature T pc ,
  • the temperatures measured by the temperature sensors T1, T2 and / or T3 may be the same or different when using a plurality of temperature sensors.
  • the measured temperatures are preferably used as a measure of the temperature of the glass door, where appropriate, they must be converted in a predetermined manner based on empirical values or simulations.
  • their mean value is taken as a measure of the temperature of the glass door.
  • the washer-dryer according to the invention is preferably equipped with a heat exchanger which is used for dehumidifying moist, warm process air from the drum. If present, this heat exchanger is particularly suitable for carrying out a cooling program according to step (b) of the method according to the invention.
  • the heat exchanger In general, in a washer-dryer in which the moisture contained in the moist warm air is condensed on a heat exchanger, the heat exchanger is operated with cooling air, cooling water, or when using a heat pump with a refrigerant of the heat pump.
  • the design and efficiency of a cooling program will depend on it.
  • a heat exchanger is present in the washer-dryer, preferably one is also available Flushing device for the heat exchanger present, which cleans the heat exchanger of adhering lint and other impurities. This can be connected to the water supply system. When using a flushing device, the water used therein can also be used to cool the process air. The cooled process air conveyed in the process air duct can then cause the glass door to cool down.
  • the rinsing water of the flushing device used as cooling water generally flows downwards through its outer wall surfaces, which are normally in contact with the process air, where the process air duct is generally connected to the tub via a transition piece.
  • heating refers to the air heating (process air) heater located in the process air duct.
  • a washer-dryer generally also has a heater for direct heating of an aqueous liquid, such as a water heater. a wash. This heating, referred to herein as water heating, is generally located in the tub below the drum. The heating is switched off when carrying out the method according to the invention in step (b).
  • the washer-dryer can be equipped with a condensate collecting device, so that as an aqueous liquid for the Abkühlungsprogramm also incurred in the drying of laundry items condensate can be used.
  • a washer-dryer has a water supply system with which water can be passed through a generally existing dispenser tray from which detergent or laundry adjuvant portions can be added to the washer-dryer.
  • a washer-dryer generally has a lye drainage system arranged at the bottom of the lye container with a drain pump as well as generally laundry hoppers and / or scooping devices.
  • a washer-dryer in the tub also contains a pressure sensor, which is preferably arranged in a lower region of the tub, so that the pressure of an aqueous liquid present in the tub can be measured.
  • the invention has numerous advantages.
  • the washer-dryer according to the invention enables the operation of a washer-dryer at comparatively high drying temperatures.
  • the maximum drying temperature in embodiments is up to 120 ° C or even 150 ° C.
  • a glass having a comparatively low thermal shock resistance e.g. a soda lime glass with a thermal shock resistance of less than 100 ° C.
  • Such a glass is generally also cheaper than a glass having a relatively high thermal shock resistance, e.g. a borosilicate glass.
  • a conventional washer-dryer can be used without any special conversion measures being necessary as long as the control device of the washer-dryer is set up to carry out the method according to the invention.
  • the washer-dryer shown in the single figure has a tub 1 and a drum 2 rotatably mounted therein about a substantially horizontal axis, in which laundry items 3 are located.
  • the tub 1 is connected via a Laugenablauf Gustav 19 with a drain pump 12, which can dispose of an aqueous liquid 11 from the tub 1 via a sewer 13 to the outside of the washer dryer.
  • the drum 2 is driven by means of an electric drive motor 4.
  • the drum 2 is loaded by a glass door 22 with laundry items 3 to be treated.
  • the glass door 22 may have on its outside facing a user in the closed state, a second pane of glass or a plastic, not shown here.
  • the washer-dryer is connected to a water supply system 20 with an external, not shown here Connected to water supply.
  • the water supply system 20 is connected to a dispensing bowl 21, from which with the aid of water from the water supply system 20 detergent or Waschosffenportionen can be transported into the tub 1. In the present case, this takes place via a part of a process air channel 5 and a sleeve 23.
  • the arrows 17 indicate the flow direction of the process air in the process air duct.
  • 28 means a drum input and 24 a drum output.
  • 9 means a valve.
  • process air For drying wet laundry in the drum 2, in the washer-dryer of the figure, which operates on the recirculation principle, the air heated by a heater 7 (“process air”) is conveyed through a fan 6 in a process air duct 5.
  • heated process air passes through the sleeve 23 through the drum inlet 28 into the tub 1 and the drum 2.
  • a heat exchanger 8 After passing through the drum 2 and drying in this wet laundry 3 passes the then humid process air through a rear exit 24 from the tub 1 to a heat exchanger 8, where the moisture contained in it condense due to the cooling of the process air and can be collected in a condensate tank, not shown here.
  • the condensate flow through a transition piece 25 between the heat exchanger 8 and 1 lye tank back into the tub 1, from where it can be disposed of via the lye drain line 19 with the drain pump 12 via the sewer 13 to the outside of the washer dryer.
  • the dehumidified process air then continues to flow in the process air channel 5 and can be heated again by means of the heater 7 and pass through the sleeve 23 into the drum 2, etc.
  • the washer-dryer of the embodiment shown in the figure has three temperature sensors T1 14, T2 15 and T3 16 in the process air duct in order to control the drying process by means of measurements of temperatures in the flowing process air.
  • the temperature of the glass door 22 can be determined or estimated via a respective temperature measurement taking place there.
  • a fourth temperature sensor T4 27 is attached to the water supply system 20 to measure a temperature T aq of the water used in the washer-dryer. The value T aq is then supplied to the control device 18 of the washer-dryer in order an embodiment of the method to be considered.
  • a temperature sensor T1 14 is arranged between a drum inlet 28 and the glass door 22, a temperature sensor T2 15 between the drum outlet 24 and the glass door 22 and a temperature sensor T3 16 on the glass door 22.
  • the temperature sensor T3 on the glass door 22 is sufficient.
  • the various temperature sensors are used to illustrate various possible arrangements for the temperature sensor (s) and to implement redundant measurement of the temperature T pc of the process air. The latter can contribute to the protection against a failure of a temperature sensor. It is particularly favorable here that already existing sensors are used to develop additional benefits by measuring the temperature of the glass door 22.
  • the cooling program comprises a passage of process air through the heat exchanger 8, to which a flushing device 10 is assigned.
  • the flushing device 10 is connected via a water valve 9 with a water supply of the washer dryer not shown here.
  • the cooling program comprises contacting the warm process air with water from the flushing device 10 for the heat exchanger 8.
  • the amount of water used in the cooling program M c 11 flows into the tub 1 and is chosen so that it is smaller than the amount M b of water in the tub 1, the is necessary so that a lower end of the drum 2 is immersed in the water.
  • the water 11 passes through a transition piece 25 and a rear exit 24 into the tub 1.
  • the washer dryer of the figure thus has the advantage that the heated by the warm process air water 11 from the flushing device 10 for the implementation of the wash program in step (d ) can be used.
  • the measurement of the temperature T aq of the water from the water supply system 20 by means of the temperature sensor T4 27 allows the temperature T pc lim depending on a temperature T aq of the water from the water supply system 20 can be set so that a predetermined here thermal shock resistance .DELTA.T shock is not exceeded, for example, about 100 Kelvin.
  • the laundry 2 containing drum 2 is rotated and operated in particular in a Reversierrhythmus, in particular with a rotational speed of 50 revolutions / min. In the process, and as a result, the items of laundry that are located in the drum 2 and possibly come into contact with the glass door 22 are also cooled.
  • laundry items 3 had generally been dried in the washer-dryer by passing hot process air through the moist laundry items 3 when the heater 7 was switched on by means of the blower 6.
  • the cooling is switched on - which is not apparent in the figure shown - then the moisture was condensed on the heat exchanger 8.
  • the process air was then circulated until a desired degree of drying is achieved.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Cleaning In General (AREA)
  • Drying Of Solid Materials (AREA)

Claims (13)

  1. Procédé de fonctionnement d'un lave-linge séchant, le lave-linge séchant présentant une cuve de liquide de lavage (1), un tambour (2) logé de manière rotative dans la cuve de liquide de lavage, doté d'une porte en verre (22) pouvant être fermée, le tambour (2) servant à recevoir et à retirer des pièces de linge (3) lorsque la porte en verre (22) est ouverte ; un dispositif de commande (18) et un canal d'air de processus (5) dans lequel se trouvent un chauffage (7) destiné à échauffer l'air, un ventilateur (6) et au moins un capteur de température (14, 15, 16) pour la mesure d'une température Tpc 1 comprenant les étapes :
    (a) mesure d'une température Tpc 1 dans le canal d'air de processus (5) à l'aide de l'au moins un capteur de température (14, 15, 16) ;
    (b) lorsque le chauffage (7) est arrêté, réalisation d'un programme de refroidissement avec l'air de processus au cas où Tpc 1 ≥ Tpc lim, sachant que Tpc lim est une température limite supérieure de l'air de processus, le programme de refroidissement étant réalisé jusqu'à ce qu'une température prédéfinie Tpc set≤ Tpc lim soit obtenue, de sorte que le programme de refroidissement obtienne un refroidissement de l'air de processus et donc de la porte en verre (22), le programme de refroidissement comprenant la mise en contact de l'air de processus chaud avec l'eau provenant d'un système d'alimentation en eau (20), la température Tpc lim étant déterminée en fonction d'une température Taq de l'eau provenant du système d'alimentation en eau (20) de manière à ce qu'une résistance aux chocs thermiques prédéfinie ΔTshock ne soit pas dépassée, et
    (c) réalisation d'un programme de lavage.
  2. Procédé selon la revendication 1, caractérisé en ce que l'au moins un capteur de température (16) mesure directement une température de la porte en verre (22).
  3. Procédé selon la revendication 1, caractérisé en ce que l'au moins un capteur de température (14, 15) est disposé à distance de la porte en verre (22), et en ce qu'avant la mesure, le ventilateur (6) est mis en marche pour une période de temps ΔTblow afin de provoquer une compensation de température dans le canal d'air de processus (5).
  4. Procédé selon la revendication 3, caractérisé en ce que la période de temps ΔTblow ne dépasse pas une longueur d'une minute et est notamment d'environ 30 secondes.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le programme de refroidissement comprend un guidage de l'air de processus à travers un échangeur de chaleur (8) disposé dans le lave-linge séchant.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le programme de refroidissement comprend la mise en contact de l'air de processus chaud avec l'eau provenant d'un dispositif de rinçage (10) pour un échangeur de chaleur (8).
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la quantité Mc d'eau utilisée dans le programme de refroidissement s'écoule dans la cuve de liquide de lavage (1) et est sélectionnée de manière à ce qu'elle soit inférieure à la quantité Mb d'eau dans la cuve de liquide de lavage (1), qui est nécessaire pour qu'une extrémité inférieure du tambour (2) plonge dans l'eau.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'eau échauffée par l'air de processus chaud est utilisée pour la réalisation du programme de lavage à l'étape (c).
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la résistance aux chocs thermiques ΔTshock est d'environ 100 K.
  10. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le tambour (2) est mis en rotation pendant le programme de refroidissement.
  11. Procédé selon la revendication 10, caractérisé en ce que le tambour (2) fonctionne en mode réversible.
  12. Lave-linge séchant présentant une cuve de liquide de lavage (1), un tambour (2) logé de manière rotative dans la cuve de liquide de lavage, doté d'une porte en verre (22) pouvant être fermée, le tambour (2) servant à recevoir et à retirer des pièces de linge (3) lorsque la porte en verre (22) est ouverte ; un dispositif de commande (18) et un canal d'air de processus (5) dans lequel se trouvent un chauffage (7) destiné à échauffer l'air, un ventilateur (6) et au moins un capteur de température (14, 15, 16) pour la mesure d'une température Tpc 1,
    le dispositif de commande (18) étant configuré pour la réalisation d'un procédé comprenant les étapes :
    (a) mesure d'une température Tpc 1 dans le canal d'air de processus (5) à l'aide de l'au moins un capteur de température (14, 15, 16) ;
    (b) lorsque le chauffage (7) est arrêté, réalisation d'un programme de refroidissement avec l'air de processus au cas où Tpc 1 ≥ Tpc lim, sachant que Tpc lim est une température limite supérieure de l'air de processus, le programme de refroidissement étant réalisé jusqu'à ce qu'une température prédéfinie Tpc set≤ Tpc lim soit obtenue, de sorte que le programme de refroidissement obtienne un refroidissement de l'air de processus et donc de la porte en verre (22), le programme de refroidissement comprenant la mise en contact de l'air de processus chaud avec l'eau provenant d'un système d'alimentation en eau (20), la température Tpc lim étant déterminée en fonction d'une température Taq de l'eau provenant du système d'alimentation en eau (20) de manière à ce qu'une résistance aux chocs thermiques prédéfinie ΔTshock ne soit pas dépassée, et
    (c) réalisation d'un programme de lavage.
  13. Lave-linge séchant selon la revendication 12, caractérisé en ce que pour la mesure de la température Tpc de l'air de processus, un capteur de température T1 (14) est disposé entre une entrée de tambour et la porte en verre (22), en ce qu'un capteur de température T2 (15) est disposé entre une sortie de tambour (24) et la porte en verre (22) ou en ce qu'un capteur de température T3 (16) est disposé sur la porte en verre (22).
EP15183672.3A 2014-09-25 2015-09-03 Procede de fonctionnement d'un seche -linge dote d'une protection contre le choc thermique et seche-linge adapte Active EP3000924B1 (fr)

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DE102016215496A1 (de) * 2016-08-18 2018-02-22 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine oder eines Waschtrockners bei hohen Temperaturen sowie hierzu geeignete Waschmaschine oder geeigneter Waschtrockner
DE102017103498A1 (de) 2017-02-21 2018-08-23 Miele & Cie. Kg Verfahren zum Trocknen von Wäsche, Steuerverfahren und Steuervorrichtung zum Steuern eines Trocknungsvorgangs und wasserführendes Haushaltgerät zur Wäschebehandlung
DE102017103500A1 (de) 2017-02-21 2018-08-23 Miele & Cie. Kg Verfahren zum Trocknen von Wäsche, Steuerverfahren und Steuervorrichtung zum Steuern eines Trocknungsvorgangs und Waschtrockner
DE102019117282A1 (de) * 2019-06-27 2020-12-31 Miele & Cie. Kg Verfahren zum Betreiben einer Waschmaschine und Waschmaschine

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KR100748962B1 (ko) * 2004-11-12 2007-08-13 엘지전자 주식회사 세탁건조기/건조기의 건조 제어 방법
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KR20120088034A (ko) * 2010-10-19 2012-08-08 엘지전자 주식회사 건조겸용 세탁장치 및 건조완료 판단방법
JP5824639B2 (ja) 2011-09-02 2015-11-25 パナソニックＩｐマネジメント株式会社 衣類乾燥機および洗濯乾燥機
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