EP2106474B1 - Procédé d'extraction de peluches d'un échangeur thermique d'un appareil ménager et appareil ménager correspondant - Google Patents

Procédé d'extraction de peluches d'un échangeur thermique d'un appareil ménager et appareil ménager correspondant Download PDF

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Publication number
EP2106474B1
EP2106474B1 EP07822851A EP07822851A EP2106474B1 EP 2106474 B1 EP2106474 B1 EP 2106474B1 EP 07822851 A EP07822851 A EP 07822851A EP 07822851 A EP07822851 A EP 07822851A EP 2106474 B1 EP2106474 B1 EP 2106474B1
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EP
European Patent Office
Prior art keywords
heat exchanger
domestic appliance
air flow
rinsing liquid
cleaning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07822851A
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German (de)
English (en)
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EP2106474A1 (fr
Inventor
Klaus Grunert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP2106474A1 publication Critical patent/EP2106474A1/fr
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Publication of EP2106474B1 publication Critical patent/EP2106474B1/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
    • D06F58/20—General details of domestic laundry dryers 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements

Definitions

  • the invention relates to a method for removing during a drying process of a domestic appliance for the care of laundry items, in particular a clothes dryer, produced lint from a heat exchanger, in which a rinsing liquid is passed through the heat exchanger for cleaning.
  • the invention relates to a domestic appliance for the care of laundry, comprising a heat exchanger, a process air blower for driving an air flow through the heat exchanger, a collecting container for a rinsing liquid for removing generated during a drying process lint from the heat exchanger, wherein in a cleaning phase, the rinsing liquid through the Heat exchanger is passed, and a control device for controlling the cleaning.
  • Such a method and such a domestic appliance are from the DE 37 38 031 C2 known as well as out DE 43 33 901 C1 or DE 196 00 489 A1 ,
  • clothes dryers which have a compressor heat pump for alternately heating and cooling a circulating process air flow.
  • these units also have additional filter systems to prevent leaching of the associated refrigerant heat exchangers.
  • Such heat exchangers are relatively fine structured with a large variety of fins to provide good heat transfer from the circulating in the heat pump working or refrigerant to the process air flow, and therefore more than heat exchangers in conventional clothes dryers without heat pumps prone to contamination by lint
  • the corresponding filter systems consist of several sieves connected in series, filter foams or the like for the removal of the fine lint from the process air which has passed through the normal lint filter.
  • the built-in home appliance heat exchanger should be kept free of fine lint, so as to achieve a good heat transfer from the refrigerant to the process air flow.
  • the filter systems are installed in the area of the device base, the maintenance is or cleaning only very cumbersome.
  • the cleaning cycles are relatively short and the cleaning itself very expensive.
  • the removal of the lint accumulated therein should be effective.
  • a correspondingly upgraded home appliance should be specified.
  • a rinsing liquid is passed through the heat exchanger.
  • the rinsing liquid is deflected during a cleaning phase depending on the strength of a producible air flow, and depending on this deflection, the rinsing liquid flows through different areas of the heat exchanger.
  • the flushing liquid can be directed individually to different locations of the heat exchanger, virtually all areas of the heat exchanger can be freed from lint.
  • the household appliance for the care of items of laundry, comprising a heat exchanger, a process air blower for driving an air flow through the heat exchanger, a collecting container for a rinsing liquid for removing generated during a drying process lint from the heat exchanger, wherein in a cleaning phase, the rinsing liquid passed through the heat exchanger and a control device for controlling the cleaning, the control device is set such that during the cleaning phase, the process air blower is operable to drive the air flow, wherein the rinse liquid is deflected depending on the strength of the air flow and flows through different areas of the heat exchanger depending on the deflection
  • the air flow is generated by a process air blower of the domestic appliance and passed through the heat exchanger.
  • the already provided in the household appliance unit of the process air blower is thus used multifunctional. Depending on the operating state of the process air blower, an air flow is thus generated or not.
  • the flushing liquid is passed through a front portion of the heat exchanger when the generation of the airflow is deactivated.
  • a front region is understood as meaning that part of the heat exchanger which, when the air flow is activated in the flow direction, is provided as an air inflow region and is therefore first reached by the circulating process air flow.
  • the front portion of the heat exchanger is cleaned by flowing the flushing liquid through this front portion.
  • the rinsing liquid preferably flows through a rear area of the heat exchanger in the flow direction of the air flow when the generation of the air flow is activated.
  • the incoming rinsing liquid is preferably deflected in such a way that it flows through the rear region of the heat exchanger and thus rinses out the lint accumulated there.
  • the heat exchanger is associated with a heat pump of the domestic appliance.
  • the heat pump can be designed as a compressor heat pump.
  • a compressor for the working or refrigerant chlorinated and / or fluorinated hydrocarbon or carbon dioxide
  • a throttle is arranged in a known manner between two heat exchangers.
  • the refrigerant is evaporated at low pressure, whereby it absorbs heat and thus cools the process air flow.
  • the vaporized refrigerant is compressed in a compressor to a relatively high pressure and fed to the second heat exchanger, where it heats the process air stream by releasing heat and thereby liquefied.
  • the liquefied refrigerant is depressurized to the mentioned low pressure, and thus passes back to the first heat exchanger.
  • the cleaning of the heat exchangers and thus the removal of the fluff from the heat exchangers is preferably carried out at the end of a drying process of laundry items introduced in the domestic appliance and, in particular, at a time when the fluff is still moist.
  • the rinsing liquid is preferably introduced from above into the heat exchanger and then flows around the fins of the heat exchanger. Due to the achievable high flow rate and the possibility of introducing a relatively large amount of liquid, the adhering fluff can be effectively washed away.
  • the domestic appliance comprises a line with a controllable by the control valve, which line connects the sump with the heat exchanger.
  • a tumble dryer 1 comprises a compressor heat pump 2 (cf the description above, only partially shown here for the sake of clarity), which comprises a heat exchanger 2.
  • the heat exchanger 2 comprises a plurality of fins 21 and is coupled to a process air guide. It can thereby be achieved that, during operation of the tumble dryer 1, in particular during a drying phase, process air is conducted as airflow 4 in the illustrated arrow through the heat exchanger 2.
  • the air stream 4 generated in the process air guide is generated by a process air blower 6, which is shown only schematically, which can be activated and deactivated as required.
  • the tumble dryer 1 comprises a collecting container 3, which is arranged in a vertical direction at a higher level than the heat exchanger 2.
  • the collecting container 3 is condensate, which is generated during the drying process and pumped into the collecting container 3.
  • a line 5 is arranged, through which the liquid contained in the collecting container 3 can be passed to the heat exchanger 2.
  • the conduit 5 can be released or closed.
  • a control device 8 is set up, in particular programmed, to control the process of removing lint from the heat exchanger 2 generated during a drying process (which it also preferably controls) can. For this purpose, it controls, as indicated by corresponding arrows, the process air blower 6 and the valve 7. The corresponding method steps are explained below.
  • the condensate collected in the collecting container 3 is passed through the heat exchanger 2.
  • the condensate serves as a rinsing liquid to rinse the lint from the heat exchanger 2 can.
  • Fig. 2 is a schematic sectional view along the section line AA according to Fig. 1 shown.
  • the airflow 4 generated by the process air blower flows in at a front-flow area 22 of the heat exchanger 2 and exits at a downstream end or rear area 23.
  • the arrangement of the line 5 on the heat exchanger 2 is formed so that the rinsing liquid is introduced from above in the front region 22 in the heat exchanger 2. If the process air blower is switched off and thus no air flow 4 is generated, then the rinsing liquid flows from top to bottom through the heat exchanger 2 essentially into this front region 22, which, for example, extends approximately to the middle (viewed in the x direction).
  • the process air blower is activated or remains activated and the air stream 4 flows through the heat exchanger 2 in the flow direction shown, the rinsing liquid stream introduced at the front region 22 is deflected in the x direction, whereby the rear region 23 of the heat exchanger 2 also flows through this rinsing liquid will be rinsed and there attaching lint.
  • the flow course of the flushing fluid can thus also be influenced.
  • the flushing liquid can be deflected into different regions of the heat exchanger 2 by the air flow 4, as a result of which different areas can also be flowed through by the flushing liquid.
  • the condensate is collected in the collecting container 3.
  • a discharge opening of the collecting container 3 is released and the condensate used as a rinsing liquid is passed through a possibly formed with a large cross section line 5 to the heat exchanger 2 and from above rinsed over the fins 21 of the heat exchanger 2.
  • a relatively large opening 24 is formed so that a blockage of the opening, for example by lint, can be prevented.
  • the lint can then be pumped with the condensate into the sewage system. It can also be provided that at least two times flushing of the heat exchanger 2 is performed, and the flushing liquid is pumped after a first run again in the collecting container 3 and then flows through the heat exchanger 2 again.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Processing Of Solid Wastes (AREA)

Claims (12)

  1. Procédé d'extraction de peluches d'un échangeur de chaleur (2) produites durant un processus de séchage d'un appareil ménager (1) pour l'entretien du linge, dans lequel un liquide de rinçage est mené au travers de l'échangeur de chaleur (2) pour le nettoyage, caractérisé en ce qu'un écoulement d'air (4) de force variable est créé, via lequel le liquide de rinçage est dévié en fonction de la force de l'écoulement d'air (4) durant une phase de nettoyage et s'écoule en fonction de la déviation à travers diverses zones (22, 23) de l'échangeur de chaleur (2).
  2. Procédé selon la revendication 1, caractérisé en ce que l'écoulement d'air (4) est créé par une soufflerie d'air de processus (6) de l'appareil ménager (1) et s'écoule à travers l'échangeur de chaleur (2).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le liquide de rinçage s'écoule à travers une zone avant (22) de l'échangeur de chaleur (2) dans le sens d'écoulement de l'écoulement d'air (4), lorsque la production de l'écoulement d'air (4) est désactivée.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que le liquide de rinçage s'écoule à travers une zone arrière (23) de l'échangeur de chaleur (2) dans le sens d'écoulement de l'écoulement d'air (4), lorsque la production de l'écoulement d'air (4) est activée.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'un condensat produit dans l'appareil ménager (1) durant un processus de séchage est collecté sous la forme de liquide de rinçage pour le nettoyage de l'échangeur de chaleur (2).
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que le nettoyage se fait vers la fin d'un processus de séchage dans l'appareil ménager (1) et à un instant où les peluches sont encore humides.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que le liquide de rinçage est introduit dans l'échangeur de chaleur (2) par le dessus et s'écoule autour des lamelles (21) de l'échangeur de chaleur (2).
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que la phase de nettoyage est répétée à plusieurs reprises après un processus de séchage.
  9. Appareil ménager (1) pour l'entretien du linge, comprenant un échangeur de chaleur (2), une soufflerie d'air de processus (6) pour mouvoir un écoulement d'air (4) au travers de l'échangeur de chaleur (2), un réservoir collecteur (3) pour un liquide de rinçage pour extraire des peluches produites durant un processus de séchage de l'échangeur de chaleur (2), dans lequel le liquide de rinçage est mené au travers de l'échangeur de chaleur (2) durant une phase de nettoyage, ainsi qu'un dispositif de commande (8) pour la commande du nettoyage, caractérisé en ce que le dispositif de commande (8) est configuré de telle sorte que, durant la phase de nettoyage, la soufflerie d'air de processus (6) peut être exploitée pour mouvoir l'écoulement d'air (4) selon des forces différentes, dans lequel le liquide de rinçage est dévié en fonction de la force de l'écoulement d'air (4) durant une phase de nettoyage et s'écoule au travers de diverses zones (22, 23) de l'échangeur de chaleur (2) en fonction de la déviation.
  10. Appareil ménager (1) selon la revendication 9, comprenant une conduite (5) avec une soupape (7) qui peut être commandée par le dispositif de commande (8), laquelle conduite (5) relie le réservoir collecteur (3) à l'échangeur de chaleur (2).
  11. Appareil ménager (1) selon l'une des revendications 9 et 10, caractérisé en ce que l'échangeur de chaleur (2) est affecté à une pompe à chaleur (2) de l'appareil ménager (1).
  12. Appareil ménager (1) selon l'une des revendications 9 à 11, caractérisé en ce que le dispositif de commande (8) est configuré pour la répétition à plusieurs reprises de la phase de nettoyage après un processus de séchage.
EP07822851A 2006-12-22 2007-11-23 Procédé d'extraction de peluches d'un échangeur thermique d'un appareil ménager et appareil ménager correspondant Active EP2106474B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006061211A DE102006061211A1 (de) 2006-12-22 2006-12-22 Verfahren zum Entfernen von Flusen aus einem Wärmetauscher eines Hausgeräts, sowie entsprechendes Hausgerät
PCT/EP2007/062771 WO2008077708A1 (fr) 2006-12-22 2007-11-23 Procédé d'extraction de peluches d'un échangeur thermique d'un appareil ménager et appareil ménager correspondant

Publications (2)

Publication Number Publication Date
EP2106474A1 EP2106474A1 (fr) 2009-10-07
EP2106474B1 true EP2106474B1 (fr) 2010-08-18

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EP07822851A Active EP2106474B1 (fr) 2006-12-22 2007-11-23 Procédé d'extraction de peluches d'un échangeur thermique d'un appareil ménager et appareil ménager correspondant

Country Status (6)

Country Link
US (1) US8182612B2 (fr)
EP (1) EP2106474B1 (fr)
CN (1) CN101563495B (fr)
AT (1) ATE478185T1 (fr)
DE (2) DE102006061211A1 (fr)
WO (1) WO2008077708A1 (fr)

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Also Published As

Publication number Publication date
EP2106474A1 (fr) 2009-10-07
DE502007004827D1 (de) 2010-09-30
ATE478185T1 (de) 2010-09-15
WO2008077708A1 (fr) 2008-07-03
US20100065087A1 (en) 2010-03-18
CN101563495B (zh) 2011-12-07
CN101563495A (zh) 2009-10-21
US8182612B2 (en) 2012-05-22
DE102006061211A1 (de) 2008-06-26

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