EP2225413B1 - Machine à laver/sécher de linge doté d'un canal d'air de traitement - Google Patents

Machine à laver/sécher de linge doté d'un canal d'air de traitement Download PDF

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Publication number
EP2225413B1
EP2225413B1 EP08862069A EP08862069A EP2225413B1 EP 2225413 B1 EP2225413 B1 EP 2225413B1 EP 08862069 A EP08862069 A EP 08862069A EP 08862069 A EP08862069 A EP 08862069A EP 2225413 B1 EP2225413 B1 EP 2225413B1
Authority
EP
European Patent Office
Prior art keywords
dryer
washer
heat
process air
temperature
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.)
Not-in-force
Application number
EP08862069A
Other languages
German (de)
English (en)
Other versions
EP2225413A1 (fr
Inventor
Andreas Hanau
Harald MOSCHÜTZ
Ingo Schulze
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 EP2225413A1 publication Critical patent/EP2225413A1/fr
Application granted granted Critical
Publication of EP2225413B1 publication Critical patent/EP2225413B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/16—Washing liquid 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
    • D06F2103/32—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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements

Definitions

  • the invention relates to a washer-dryer, comprising a tub with a laundry drum accommodated therein and a process air duct fluidly connected to the tub for drying and reheating process air, by means of which laundry located in the laundry drum is dried.
  • laundry is dried in a laundry drying apparatus designed as a tumble dryer by means of a guided in a closed process air duct air flow, wherein the air stream is heated before applying the laundry and cooled after the loading of the laundry to condense entrained moisture.
  • the process air duct contains an air-to-air heat exchanger, a heat storage and a heater, which are passed in this order from the airflow.
  • the air flow is started and heated by the heater.
  • the admission of the heat exchanger with cooling air is omitted, so that a cooling of the air flow takes place only through the heat storage, which heats up.
  • the heat exchanger is exposed to cooling air and takes over the cooling of the air flow;
  • the heat storage then no longer serves as a cooler, but as a preheater for the air flow.
  • the initially supplied to the dryer heat energy remains the drying process and is not immediately lost through the heat exchanger; however, the savings that can be achieved in this way are small, since only heat from the phase of starting a drying process can be stored.
  • washing machines with built-in dryers usually use cooling water to condense the water evaporated from the laundry during a drying cycle ("condensation dryer operation").
  • a process air stream is conveyed within the unit by a fan in the circulation, wherein the air is first heated. Thereafter, this air is passed through the laundry drum, where it absorbs moisture from the moving in this drum wet laundry by evaporation of the water. In the course of this air is passed through a condensation device. There it is usually cooled with cold water from the water inlet to below the dew point temperature. This leads to the condensation of humidity. Thereafter, the air is reheated and passed into the laundry drum. Through the cooling water while the heat of condensation is absorbed from the humidity and pumped together with the condensed water using the sewage pump.
  • Sanyo's AWD-AQ1 is a wash dryer available in the Japanese market that uses water from a storage tank to cool the process air and return it to the tank.
  • the storage tank is used as a storage for the condensation heat from the drying process.
  • a disadvantage of this solution is the high equipment complexity and space requirements and that in such a solution, the water in the storage tank, for example, must be protected from microbial contamination using an ozone generating device or after a predetermined storage time (eg 4 days) must be pumped.
  • laundry dryers are known in which the cooling of the process air is effected by a second cooling air flow. Air from the installation room is used to cool the process air. The condensation heat is here to the air of the installation room issued.
  • the washer-dryer comprising a tub with a drum accommodated therein and a process air duct fluidly connected to the tub for drying and heating process air, by means of which dried laundry in the laundry drum is dried, an autonomous heat accumulator is arranged in or on the process air duct a liquid dispenser for applying liquid provided on the heat accumulator, which liquid dispenser comprises a Ein Hughesvorraumraum for feed water to the tub.
  • the washer-dryer has a rotatable laundry drum and a process air passage fluidly connected to the laundry drum (i.e., gas and / or liquid). In or on the process air duct an autonomous heat storage is arranged.
  • the process air duct is in fluid communication with the laundry drum on both sides.
  • the process air duct and the laundry drum form a process air circuit for processing (drying and reheating) the process air.
  • a heat storage is understood, which as Such already solves the task by its presence in or on the process air duct and not only has to enter into a connection with other functional elements to function, z. B. a heat pump.
  • the exiting from the drum of the washer-dryer moist air with typically about 80-90% relative humidity and a temperature of about 70 ° C gives heat energy to the heat storage and is cooled, in a latent heat storage, for example, to the dew point. As a result, the moisture is condensed out again.
  • the cached in the heat storage so heat energy can be released between the operating cycles of the washer-dryer slowly by free convection in the device housing to the installation room, z. B. on the device walls.
  • Such a washer-dryer requires for condensing the evaporated water from the wash neither cooling water nor cooling air, is very compact, simple and inexpensive to produce and very low maintenance.
  • the cooling of the heat store can preferably be accelerated by cooling it by means of liquid cooling, preferably water cooling.
  • the washer-dryer is equipped with a liquid dispenser for applying liquid to the heat accumulator.
  • Such a liquid dispenser according to the invention is particularly simple and effective realized by the liquid dispenser comprises a Ein Hughesvorraum for feed water to the tub.
  • the amount of water required for washing can be wholly or partially admitted to the heat storage or through the condensation device into the tub.
  • the heat accumulator releases its heat energy with the temperature level of the melting temperature to the incoming water.
  • energy for heating the wash water can be saved in an immediately following wash program.
  • a rinse with warm water also improves the rinsing effect. When spinning warm laundry also lower Schleuderrestfeuchten be achieved than cold laundry. The result smaller amount of water to be dried out leads to a reduction in the energy requirement during drying.
  • the water conducted through the heat accumulator simultaneously serves to rinse out residues of detergents (foam), fluff and other contaminants that may enter the process airways during washing and drying and thus to regularly clean the process air path.
  • a temperature measurement can also be carried out by direct sensing of the heat storage material, for. B. introduced by a heat storage or in the heat storage temperature sensor.
  • the liquid dispenser can be triggered.
  • the washer-dryer comprises a control unit, a temperature sensor arranged in front of the heat storage in the process air duct and a temperature sensor arranged after the heat storage in the process air duct, wherein the control unit is set up and / or programmed, after reaching or falling below a differential temperature between the the temperature sensors sensed measured values trigger the liquid dispenser.
  • the above washer-dryer thus has, inter alia, the advantages that it manages without Kondensationskühlement loc, allows a simpler structure than in an air condensation, monitoring the water quality of a hot water tank is not necessary, and when performing a wash following drying by the use of hot water Saves energy, improves the washing result and / or the residual slip moisture can be improved.
  • the heat storage is preferably at least partially designed as latent heat storage. This can save a large amount of heat energy with minimal space requirements.
  • the laundry dryer according to the invention has a control unit and a temperature sensor arranged on or in the heat accumulator for sensing a heat storage temperature, in particular the temperature of the latent heat storage material, wherein the control unit is set up and / or programmed after reaching or exceeding one above a melting temperature the latent heat storage material temperature threshold trigger the liquid dispenser.
  • a melting temperature of at least one heat storage material is between 35 ° C and 60 ° C, in particular between 40 ° C and 50 ° C. Since with a latent heat storage the temperature is approximately constant equal to the melting temperature, as long as the storage material in the phase transition, in this case usually between solid and liquid, the temperature of the storage almost does not change, and there is a constant large temperature difference between condensation surface and process air.
  • Preferred latent storage materials include but are not limited to paraffins or salts, especially sodium sulfate (melting point about 32 ° C), sodium thiosulfate (melting point about 48.5 ° C) and / or sodium acetate (melting point about 58 ° C).
  • a single latent storage material or a combination of latent storage materials may be used to cover a broader temperature range. The combination may be in the form of a mixture of different materials, or as separate volumes, e.g. B. separate plates.
  • the heat storage material is at least partially formed in a plate shape.
  • the heat accumulator is preferably arranged in the region of an air intake opening of the air duct (drum outlet).
  • the maximum amount of laundry that can be washed during washing has hitherto been divided (for example, halved) for drying and then dried in two successive drying cycles.
  • the amount of storage material and thus the heat capacity of the washer-dryer according to the invention is preferably such that the heat of fusion is slightly larger than the amount required during the drying of a complete amount of laundry in the wash cycle. This makes it possible to buffer the entire accumulating waste heat in the heat storage.
  • Typical amounts of latency storage material may be, for example, in the range between 15 and 20 kg with a heat storage capacity of the order of 200 KJ / kg.
  • laundry drying method is described schematically in more detail.
  • FIG. 1 shows a sectional view in side view of a sketch of a washer-dryer.
  • FIG. 1 shows a washer-dryer 1 with a drum housing in the form of a tub 2 with a rotatable laundry drum 3.
  • the liquor tank 2 outgoing on both sides of a process air duct 4 is present.
  • process air from the washing drum 3 is sucked in by means of a process air blower 7 through an air intake opening 6 provided in the rear wall 5 of the liquor container 2 and initially passed through a condensation device 8, where it cools and condenses out in its contained water vapor.
  • the condensation water is passed through the lower region 9 of the process air duct designed as a downpipe Returned 4 back into the tub 2 and transported from there by means of a drain pump 10 through the drain passage 11 to the outside.
  • the condensation water path is indicated by solid arrows.
  • the now drier process air is further passed through a heater 12, in which it is heated to typically about 100-120 ° C, before returning to the tub 2 in an upper portion of a sleeve 13 through a Heilausblasö réelle 14 blown.
  • the process air flow is indicated by the dashed arrows.
  • the condensation device is in the form of an autonomous latent heat accumulator 8 arranged in the process air duct 4, which has a heat storage material in the form of Glauber's salt (that is sodium sulfate) with a melting temperature of 32 ° C.
  • the latent heat accumulator 8 is formed as indicated in plate form. So that the 60-80 ° C warm, sucked by the laundry process air precondensed as little as possible, the heat accumulator 8 in the region or shortly behind the air intake opening 6 is arranged.
  • the amount of heat storage material is 15-20 kg slightly larger than is typically needed for drying the laundry of a full laundry drum 3.
  • the laundry drying device 1 further has an above the heat accumulator 8 arranged Ein Hughesvoriques 15 for feed water for the tub 2.
  • a water inlet to the dispenser 15 is selectively openable or closable by means of a controllable by a control device 16 valve 17.
  • the heat storage 8 is its thermal energy with the temperature level of the melting temperature of the incoming water. In an immediately following wash program so energy can be saved to heat the wash water.
  • a rinse with warm water also improves the rinsing effect. When spinning warm laundry also lower Schleuderrestfeuchten be achieved than cold laundry.
  • the resulting smaller amount of dried out water leads to a reduction in energy consumption during drying.
  • the guided through the heat accumulator 8 water also serves to rinse residues of detergents (foam), lint and other contaminants that can get into the process airways during washing and drying, and thus to clean the process airway regularly.
  • the dispenser 15 is also used for cooling the heat accumulator 8 during a drying cycle.
  • This will be a relative 0.5 l / min of the Ein Hughesvoriques 15 passed over the heat accumulator 8 and pumped out of the drum housing 2 below.
  • This cooling water flow can for example be generated permanently during a drying process, or when the heat storage capacity of the heat accumulator 8 is completely exhausted by waste heat or threatens to be exhausted.
  • a depletion of the heat capacity is detected here by means of temperature sensors 18, 19 inserted in the process air duct 3 in front of and behind the heat accumulator 8 for detecting the air temperature, whose sensor values can be received and evaluated directly or indirectly by the control device 16. If the difference between the measured values sensed by the temperature sensors 18, 19 drops and, in particular, changes, this is an indication that the latent-storage medium has melted and no further melting energy can be absorbed. Subsequently, the cooling water flow is activated. For this purpose, a temperature difference threshold value is stored in the control device 16, upon reaching or falling below the valve 17 is opened. Conversely, after exceeding a certain, z. B. a larger, temperature difference of the cooling water flow can be switched off again. Alternatively, the duration of the water cooling may be stored, for example, as a fixed time interval, which provides an empirically determined sufficient duration for cooling.
  • the present invention is not limited to the described embodiment.
  • the exhaustion of the heat capacity can be detected by detecting the process air temperature especially at the heat storage output, z. B. by the temperature sensor 19, if the process air temperature rises significantly above the melting temperature of the storage medium 8; This is also an indication that the entire latent storage medium has melted and no further melting energy can be absorbed.
  • Another detection possibility is the detection of the water temperature of the heat accumulator has undergone Ein Togetherwassers, z. B. by the temperature sensor 18. To complete the water cooling, the valve 17 is closed.

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

Claims (9)

  1. Lave-linge et sèche-linge (1) présentant un réservoir de liquide de lavage (2) comprenant un tambour à linge (3) qui y est logé et présentant un canal d'air de traitement (4, 9) raccordé de manière fluidique au réservoir de liquide de lavage (2), destiné à sécher et échauffer l'air de traitement, au moyen duquel air de traitement le linge se trouvant dans le tambour à linge (3) est séché, caractérisé en ce que dans ou sur le canal d'air de traitement (4, 9) est disposé un accumulateur de chaleur autonome (8) et en ce qu'un distributeur de liquide destiné à amener du liquide sur l'accumulateur de chaleur (8) est ménagé, lequel distributeur de liquide comprend un dispositif d'arrosage (15) pour l'eau d'arrivée vers le réservoir de liquide de lavage (2).
  2. Lave-linge et sèche-linge (1) selon la revendication 1, caractérisé en ce que le distributeur de liquide (15) est disposé au-dessus de l'accumulateur de chaleur (8).
  3. Lave-linge et sèche-linge (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il présente une unité de commande (16), un capteur de température (18) disposé dans le canal d'air de traitement (4) en amont de l'accumulateur de chaleur (8), l'unité de commande (16) étant configurée et/ou programmée pour déclencher le distributeur de liquide après l'obtention ou le dépassement négatif d'une température différentielle entre les valeurs de mesure détectées par les capteurs de température (18, 19).
  4. Lave-linge et sèche-linge (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'accumulateur de chaleur (8) présente un accumulateur de chaleur latente (8) comprenant au moins un matériau d'accumulateur de chaleur latente.
  5. Lave-linge et sèche-linge (1) selon la revendication 4, caractérisé en ce qu'il présente une unité de commande (16) et un capteur de température disposé sur ou dans l'accumulateur de chaleur (8), destiné à détecter une température de l'accumulateur de chaleur, notamment une température du matériau de l'accumulateur de chaleur latente, l'unité de commande (16) étant configurée et/ou programmée pour déclencher le distributeur de liquide après l'obtention ou le dépassement d'une valeur seuil de température située au-dessus d'une température de fusion du matériau de l'accumulateur de chaleur latente.
  6. Lave-linge et sèche-linge (1) selon l'une quelconque des revendications 4 et 5, caractérisé en ce qu'une température de fusion d'au moins un matériau de l'accumulateur de chaleur latente est située entre 30°C et 60°C, notamment entre 40°C et 50°C.
  7. Lave-linge et sèche-linge (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'accumulateur de chaleur (8) est réalisé au moins en partie en forme de plaque.
  8. Lave-linge et sèche-linge (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'accumulateur de chaleur (8) est disposé dans la zone d'une ouverture d'aspiration d'air (6).
  9. Lave-linge et sèche-linge (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une quantité de matériau de l'accumulateur de chaleur est plus grande que nécessaire pour le séchage d'une quantité de linge correspondant à un tambour à linge (3) plein.
EP08862069A 2007-12-18 2008-12-04 Machine à laver/sécher de linge doté d'un canal d'air de traitement Not-in-force EP2225413B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007060853A DE102007060853A1 (de) 2007-12-18 2007-12-18 Wäschetrocknungsgerät und Verfahren zum Trocknen von Wäsche
PCT/EP2008/066763 WO2009077336A1 (fr) 2007-12-18 2008-12-04 Sèche-linge et procédé de séchage de linge

Publications (2)

Publication Number Publication Date
EP2225413A1 EP2225413A1 (fr) 2010-09-08
EP2225413B1 true EP2225413B1 (fr) 2012-02-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08862069A Not-in-force EP2225413B1 (fr) 2007-12-18 2008-12-04 Machine à laver/sécher de linge doté d'un canal d'air de traitement

Country Status (5)

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EP (1) EP2225413B1 (fr)
CN (1) CN101903581B (fr)
AT (1) ATE547551T1 (fr)
DE (1) DE102007060853A1 (fr)
WO (1) WO2009077336A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046547A1 (de) * 2009-11-09 2011-05-12 BSH Bosch und Siemens Hausgeräte GmbH Trockner mit einer Trocknungskammer für zu trocknende Gegenstände und einem Latentwärmespeicher
US20130192085A1 (en) * 2012-01-30 2013-08-01 Bsh Home Appliances Corporation Washer dryer with a temperature sensor and process for its operation
DE102013223917A1 (de) 2012-12-20 2014-06-26 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsmaschine mit einem Laugenbehälter und einem Wärmespeicher
DE102014217341B4 (de) 2014-08-29 2023-02-09 BSH Hausgeräte GmbH Latentwärmespeicher für ein Haushaltsgerät
EP3006619B1 (fr) * 2014-10-06 2018-08-29 Bonferraro S.p.A. Dispositif et procédé pour la condensation de vapeur dans le circuit de décharge d'une machine de lavage et de désinfection
CN105986447B (zh) * 2015-03-03 2019-11-05 青岛海尔洗衣机有限公司 排气式干衣机及其控制方法
EP3241944A1 (fr) * 2016-05-03 2017-11-08 BSH Hausgeräte GmbH Appareil ménager équipé d'un circuit d'air de traitement
DE102022130374A1 (de) 2022-11-16 2024-05-16 Mewa Textil-Service Se & Co. Management Ohg Energiespeichereinrichtung für eine Vorrichtung und ein Verfahren zum Trocknen von Wäsche

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3710710A1 (de) * 1987-03-31 1988-10-13 Philips Patentverwaltung Kondensations-waeschetrockner
DE4403737A1 (de) * 1994-02-07 1995-08-10 Bosch Siemens Hausgeraete Wasch- oder Geschirrspülmaschine mit einem Wärmetauscher
DE10224940A1 (de) * 2001-06-22 2003-02-27 Miele & Cie Kondensationswäschetrockner
JP2004116899A (ja) * 2002-09-26 2004-04-15 Matsushita Electric Ind Co Ltd ヒートポンプ式乾燥機

Also Published As

Publication number Publication date
CN101903581A (zh) 2010-12-01
DE102007060853A1 (de) 2009-06-25
CN101903581B (zh) 2012-04-18
ATE547551T1 (de) 2012-03-15
WO2009077336A1 (fr) 2009-06-25
EP2225413A1 (fr) 2010-09-08

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