EP2334864B1 - Dryer having a lint filter and a cleaning device - Google Patents

Dryer having a lint filter and a cleaning device Download PDF

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Publication number
EP2334864B1
EP2334864B1 EP09782501.2A EP09782501A EP2334864B1 EP 2334864 B1 EP2334864 B1 EP 2334864B1 EP 09782501 A EP09782501 A EP 09782501A EP 2334864 B1 EP2334864 B1 EP 2334864B1
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EP
European Patent Office
Prior art keywords
dryer
lint
process air
heat sink
drying chamber
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EP09782501.2A
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German (de)
French (fr)
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EP2334864A1 (en
Inventor
Lothar Dittmer
Klaus Grunert
Thomas Nawrot
Andreas Ziemann
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Priority to PL09782501T priority Critical patent/PL2334864T3/en
Publication of EP2334864A1 publication Critical patent/EP2334864A1/en
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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 
    • D06F58/22—Lint collecting arrangements

Definitions

  • the invention relates to a dryer comprising a drying chamber for receiving a moist material and a process air guide for supplying process air into the drying chamber and for discharging process air from the drying chamber, which process air guide a heat source for heating the process air before it enters the drying chamber and a heat sink for cooling the process air after it leaves the drying chamber, and a first lint filter arranged between the drying chamber and the heat sink, to which a first cleaning device is assigned, wherein the first cleaning device comprises a collector for a liquid, a first flushing line connected to the collector in this first purge line located first control member, a connected to the first purge line first distributor for distributing funded by the first purge line liquid on the first lint filter and recording catching lint from the first lint filter, and having a first drain for draining the liquid with the captured lint from the first lint filter.
  • a dryer which is designed as a washer-dryer.
  • This dryer comprises a drying chamber for receiving a moist material and an open process air duct for circulating process air through the drying chamber, which process air duct has a heat source for heating the process air before it enters the drying chamber and a first lint filter arranged behind the drying chamber, which first cleaning device wherein the first cleaning device is a water supply network, a first flushing line connected thereto, a first control element located in this first flushing line, a first distributor connected to the first flushing line for distributing liquid conveyed by the first flushing line to the first lint filter and for receiving trapped lint from the first lint filter, and a first drain for discharging the liquid with the captured lint from the first lint filter.
  • a dryer out which is designed as a washer-dryer and which a drying chamber for receiving a moist material and a substantially closed process air duct for circulating process air through the drying chamber, which process air duct has a heat source for heating the process air before entering the drying chamber and a heat sink for cooling the process air after exiting the drying chamber.
  • EP 1 788 140 A1 a dryer for drying laundry by means of an air flow
  • a screen for filtering lint from an air flow in the process air guide is arranged in the region of a bearing plate, which screen forms a first lint filter.
  • the lint collected in the process air duct on the screen is stripped off the screen fabric of the lint filter and stored in a container arranged adjacent to the doctor blade and to the screen. The squeegee and the container thus form together with other components a first cleaning device.
  • the container is relatively small due to the space available in the area of the squeegee. It can be used to collect lint from about 7 to 10 drying processes. Since the lint is stored in the dry state, they occupy a relatively large volume. On the one hand, the accessibility to the collecting container is restricted in these dryers, and on the other hand, the collecting volume is limited by its arrangement in a space-limited zone of the dryer, resulting in a relatively frequent maintenance interval for disposal of the lint from the container.
  • the dryer also has a heater as a heat source and an air-to-air heat exchanger as a heat sink in the process air duct.
  • the dryer according to the invention comprises a drying chamber for receiving a moist material and a process air duct for supplying process air into the drying chamber and for discharging process air from the drying chamber, wherein the process air duct is in particular a substantially closed process air duct for circulating process air through the drying chamber, which process air duct a heat source for heating the process air before it enters the drying chamber and a heat sink for cooling the process air after it leaves the drying chamber, and a first lint filter arranged between the drying chamber and the heat sink, to which a first cleaning device is assigned, the first cleaning device a collector for a liquid, a first flushing line connected to the collector, a first control element located in this first flushing line, one connected to the first flushing line
  • the lint is rinsed off the first lint filter by rinsing it with a suitable liquid, which is preferably collected and collected in the dryer, and the lint is thus taken up by the liquid and removed therewith.
  • a suitable liquid which is preferably collected and collected in the dryer, and the lint is thus taken up by the liquid and removed therewith.
  • the liquid causes the rinsed lint taken up by this and, collected in an additional filter and separated from the liquid, a relatively compact form moist clumps, which can be disposed of quite easily and without the formation of further dust.
  • the first lint filter has a filter fabric fastened on a carrier, wherein the filter fabric has at least one property from the group comprising the properties hydrophobicized, dirt-repellent and antibacterial.
  • a filter fabric which is hydrophobed is particularly preferred. All of these properties can be imparted to the filter fabric by a corresponding coating, wherein the coating can be formed in a conventional manner by impregnation or plasma coating.
  • the first discharge has a second lint filter for collecting the lint taken up.
  • the first lint filter captures the vast majority of all lint that occurs during a drying process in the dryer, and all of these fluff go into the rinse.
  • the second lint filter can trap these lint, thus providing them separated from the liquid as a relatively compact, easily removable body for eventual disposal.
  • the collector of the heat sink for collecting condensate, which precipitates in the heat sink from the process air assigned.
  • the collector does not necessarily have to be in close proximity to the heat sink;
  • the collector can be placed in particular from the dryer removable and placed on an easily accessible for an operator, spaced from the heat sink body of the dryer. Then the operator can remove the collector from the dryer after completion of the drying process and dispose of the condensate collected therein; In this context, it is also possible to dispose of the lint collected in the second lint filter (appropriately placed).
  • a pumping line together with a condensate pump is provided in the corresponding dryer, which connects the heat sink with the collector.
  • the pumping line may in particular start from a collecting tray placed on the heat sink, in which condensate is present collects, which has formed in the heat sink from the cooled process air stream and deposited on the heat sink and dripping from this.
  • the drip tray can be an integral part of that part of the process air duct, in which the heat sink is placed.
  • heat source and heat sink in the dryer according to the invention is not important in the first place;
  • heat source and heat sink of any known type and design are conceivable and useful in connection with the invention.
  • the heat source may be a heater operated electrically or by combustion of a suitable fuel such as oil and gas.
  • the heat sink may be a heat exchanger operated with a suitable coolant, for example an air-to-air heat exchanger.
  • the dryer according to the invention in which the heat source and the heat sink of a heat pump are associated, which heat pump is arranged to pump heat from the heat sink to the heat source.
  • the corresponding dryer has a second cleaning device which comprises a second flushing line connected to the collector, a second control element located in this second flushing line and a second distributor connected to the second flushing line for distributing liquid conveyed through the second flushing line to the second flushing line Has heat sink.
  • the heat pump is a thermoelectric heat pump or a heat pump of the compressor type
  • the heat sink must be permanently connected to other components of the heat pump and can not be removed from the dryer for cleaning like a conventional air-to-air heat exchanger , Then it is particularly favorable to assign the heat sink a second cleaning device by which the heat sink of lint that could not be caught by the first lint filter and have adhered to it to clean. If this second cleaning device works with liquid, then it can be combined in a particularly advantageous manner with the first cleaning device, as described here.
  • the dryer according to the invention is set up as a tumble dryer for drying a moist material, which is laundry. It is further preferred that the drying chamber is a rotatable drum.
  • the dryer according to the invention is designed as a domestic appliance.
  • the dryer 1 here a tumble dryer 1, designed as a rotatable drum drying chamber 2, which receives moist material 3, here laundry 3, for drying.
  • a closed process air guide 4 is provided, in which driven by a fan 5, a process air flow circulates, which absorbs moisture from the laundry 3 and dissipates.
  • a heat source 6 the process air is heated before it enters the drying chamber 2. After the thus heated process air has flowed around due to the rotation of the drying chamber 2 in this surrounding laundry 3 while absorbing moisture, it leaves the drying chamber 2 and reaches a heat sink 7.
  • a first lint filter 12 is arranged in the process air guide 4.
  • This first lint filter 12 is necessary to lint, these are fine, dust-like fiber particles and the like, which entraises the flowing process air of the laundry 3, so that they do not reach the heat sink 7 and contaminate it. This is necessary above all because lint that precipitate on appropriately exposed surfaces of the heat sink 7, the thermal conductivity of the structures within the heat sink 7 can significantly deteriorate, so that the operation of the dryer 1 can be affected or even endangered.
  • the presence of the first lint filter 12 in the process air guide 4 is not free of possible impairments, because even the first lint filter 12 is a significant flow obstacle in the process air 4, if it clogs in the course of a drying process with lint.
  • a first cleaning device 13 1, 15, 16, 17, associated with which the first lint filter 12 using the Can be freed of lint stored in the collector 11 condensate.
  • a first purge line 13 is connected to the collector 11, which passes through a first control member 14 to a arranged on the first lint filter 12 first manifold 15, through which condensate can be distributed from the collector via the first lint filter 12, so that this condensate on the first lint filter 12 deposits lint and dissipates.
  • Such loaded with lint condensate passes through a first discharge line 16 to a second lint filter 17, which catches the lint taken from the condensate, whereupon the condensate in turn the drip tray 8 flows to be transported from this by means of the condensate pump 10 back to the collector 11.
  • the lint is a compact, moist lump, which can be relatively easily removed and disposed of the second lint filter 17.
  • the condensate in the collector 11 remains reasonably free of lint, so that it can be used in a known manner instead of distilled water, for example for ironing laundry.
  • the collector 11 can be filled exclusively or additionally with fresh water taken from a domestic water supply. In this way it can be ensured that the collector 11 always contains the amount of liquid required for cleaning the lint filter 12.
  • the heat source 6 and the heat sink 7 are integrated in the present embodiment illustrated in a heat pump 6, 7, 20, 21, 22, in which heat, which is withdrawn from the process air in the heat sink 7, pumped to the heat source 6 and fed back there the process air becomes.
  • This substance may be present propane, carbon dioxide or a fluorinated hydrocarbon compound such as the known R134a, R152a, R407C and R410a - the latter two substances are mixtures of several fluorinated hydrocarbon compounds.
  • the refrigerant passes in the refrigerant circuit 20 in liquid form to the heat sink 7, where it evaporates while absorbing heat from the process air also flowing through.
  • a compressor 21 in the refrigerant circuit 20 compresses the evaporated refrigerant and delivers it to the heat source 6. There, the refrigerant liquefies by giving off heat to the process air flowing through.
  • the refrigerant now flows in the refrigerant circuit 20 of a throttle 22, represented by a valve, a capillary or an orifice, to where it is expanded to a reduced pressure. In this form, it returns to the heat sink 7 to re-evaporate there.
  • the refrigerant circuit 20 must be completely self-contained in order to ensure complete enclosure of the refrigerant over the expected service life of the dryer 1.
  • the first lint filter 12 is incapable of completely receiving the fluff entrained by the process air; It is always to be expected that a fraction of the lint, though extremely finely divided, passes through the lint filter 12 without being caught by it. These finely divided lint are then more or less completely settled in the heat sink 7, wherein the condensate occurring there, they to the corresponding exposed surfaces of the Heat sink 7 can adhere. These fluff can, if appropriate over a larger number of drying processes in the dryer 1 away, significantly affect the function of the heat sink 7. In the present case, it is aggravating that because of the required complete sealing of the refrigerant circuit 20, removal of the heat sink 7 from the dryer 1 is not possible for the purpose of cleaning.
  • the heat sink 7 is associated with a second cleaning device 23, 24, 25, with which also in the collector 11 collected condensate can be used to rinse the process air exposed surfaces of the heat sink 7 and remove the resulting lint.
  • a second purge line 23 together with an inserted second control element 24 is assigned to the collector, which connects the collector 11 with a second distributor 25 placed on the heat sink 7.
  • condensate passes from the collector 11 to the heat sink 7 and can rinse off the fluff deposited there.
  • the condensate laden with such fluff drips off into the collecting tray 8 and is in turn fed to the collector 11 from there by means of the condensate pump 10.
  • the Kotrollorgane 14 and 24 are presently shown in each case as a simple valve 14 and 24.
  • a pump in addition to each such valve 14 and 24 may be provided a pump.
  • a single pump could be assigned to both valves 14 and 24, respectively.
  • a control device 26 is provided in the dryer 1. This serves a user of the dryer 1 to select a program from among a variety of programs offered for the desired drying process, includes a display device to provide a user with necessary information, and controls all controllable components of the dryer 1. Corresponding control lines are shown in FIG FIG. 1 not shown for clarity.
  • FIG. 2 shows a first lint filter 12 which is constructed with a carrier 18 which carries a filter cloth 19.
  • the filter fabric 19 is flowed through by process air, wherein lint contained therein are deposited on the filter fabric 19.
  • the filter fabric 19 consists of a surface-treated material which is water-repellent or dirt-repellent equipped. As a result, the cleaning action of the liquid which overflows the filter fabric 19, but without passing through it, is supported by the filter fabric 19 when the lint is picked up.
  • circular holes are shown; Alternatively, instead of the holes, a correspondingly long slot or an arrangement of a plurality of successive elongated slots may be provided.
  • FIG. 3 shows a part of a dryer 1 as a sectional view. Shown is a section through a front-side end plate of the dryer 1, to which, see reference numeral 2, the drying chamber 2 is connected.
  • first manifold 15 From the only slightly visible first manifold 15 condensate flows as flushing water 28 on the inclined lint filter 12, where it absorbs deposited lint, and passes through a first discharge line 16 into a chamber which is formed by a removable flap 30 and a partition 29th In a lower region, the partition wall 29 is permeable so that the rinse water can pass through and to the drip tray 8, so that the lint remains in the lower region of the chamber.
  • the chamber is removable, so that the lint can be disposed of.
  • FIG. 4 shown dryer 1 largely corresponds to the embodiment according to FIG. 3 , however, behind the flap 30, a filter bag 31 is provided.
  • This filter bag 31 is made of permeable paper or textile and absorbs the lint removed from the lint filter 12 by means of the rinsing water 28 lint. If the filter bag 31 has sufficiently filled with such lint, it can be removed by opening the flap 30. This allows the lint to be disposed of without having to be touched directly.
  • the invention can also be applied in a dryer which has an open process air duct 4, as is customary in so-called drier dryers, ie the process air is taken from the room air surrounding the dryer, the drying chamber 2 is supplied and the process air discharged from the drying chamber 2 is returned to the room air. Otherwise, this dryer also has the facilities covered by the dryer 1 shown above also.

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

Description

Die Erfindung betrifft einen Trockner umfassend eine Trockenkammer zum Aufnehmen eines feuchten Gutes und eine Prozessluftführung zum Zuführen von Prozessluft in die die Trockenkammer und zum Abführen von Prozessluft aus der Trockenkammer, welche Prozessluftführung eine Wärmequelle zum Aufheizen der Prozessluft vor ihrem Eintritt in die Trockenkammer und eine Wärmesenke zum Abkühlen der Prozessluft nach ihrem Austritt aus der Trockenkammer, sowie einen zwischen der Trockenkammer und der Wärmesenke angeordneten ersten Flusenfilter aufweist, welchem eine erste Reinigungseinrichtung zugeordnet ist, wobei die erste Reinigungseinrichtung einen Sammler für eine Flüssigkeit, eine an den Sammler angeschlossene erste Spülleitung, ein in dieser ersten Spülleitung befindliches erstes Kontrollorgan, einen an die erste Spülleitung angeschlossenen ersten Verteiler zum Verteilen von durch die erste Spülleitung geförderter Flüssigkeit auf den ersten Flusenfilter und zum Aufnehmen aufgefangener Flusen von dem ersten Flusenfilter, und eine erste Ableitung zum Ableiten der Flüssigkeit mit den aufgenommenen Flusen von dem ersten Flusenfilter umfasst.The invention relates to a dryer comprising a drying chamber for receiving a moist material and a process air guide for supplying process air into the drying chamber and for discharging process air from the drying chamber, which process air guide a heat source for heating the process air before it enters the drying chamber and a heat sink for cooling the process air after it leaves the drying chamber, and a first lint filter arranged between the drying chamber and the heat sink, to which a first cleaning device is assigned, wherein the first cleaning device comprises a collector for a liquid, a first flushing line connected to the collector in this first purge line located first control member, a connected to the first purge line first distributor for distributing funded by the first purge line liquid on the first lint filter and recording catching lint from the first lint filter, and having a first drain for draining the liquid with the captured lint from the first lint filter.

Aus der EP 1 669 487 A1 geht ein Trockner hervor, welcher als Waschtrockner ausgeführt ist. Dieser Trockner umfasst eine Trockenkammer zum Aufnehmen eines feuchten Gutes und eine offene Prozessluftführung zum Zirkulieren von Prozessluft durch die Trockenkammer, welche Prozessluftführung eine Wärmequelle zum Aufheizen der Prozessluft vor ihrem Eintritt in die Trockenkammer sowie einen hinter der Trockenkammer angeordneten ersten Flusenfilter aufweist, welchem eine erste Reinigungseinrichtung zugeordnet ist, wobei die erste Reinigungseinrichtung ein Wasserversorgungsnetz, eine an dieses angeschlossene erste Spülleitung, ein in dieser ersten Spülleitung befindliches erstes Kontrollorgan, einen an die erste Spülleitung angeschlossenen ersten Verteiler zum Verteilen von durch die erste Spülleitung geförderter Flüssigkeit auf den ersten Flusenfilter und zum Aufnehmen aufgefangener Flusen von dem ersten Flusenfilter, und eine erste Ableitung zum Ableiten der Flüssigkeit mit den aufgenommenen Flusen von dem ersten Flusenfilter umfasst.From the EP 1 669 487 A1 goes out a dryer, which is designed as a washer-dryer. This dryer comprises a drying chamber for receiving a moist material and an open process air duct for circulating process air through the drying chamber, which process air duct has a heat source for heating the process air before it enters the drying chamber and a first lint filter arranged behind the drying chamber, which first cleaning device wherein the first cleaning device is a water supply network, a first flushing line connected thereto, a first control element located in this first flushing line, a first distributor connected to the first flushing line for distributing liquid conveyed by the first flushing line to the first lint filter and for receiving trapped lint from the first lint filter, and a first drain for discharging the liquid with the captured lint from the first lint filter.

Aus der EP 1 669 487 A1 geht auch ein Trockner hervor, welcher als Waschtrockner ausgeführt ist und welcher eine Trockenkammer zum Aufnehmen eines feuchten Gutes und eine im Wesentlichen geschlossene Prozessluftführung zum Zirkulieren von Prozessluft durch die Trockenkammer aufweist, welche Prozessluftführung eine Wärmequelle zum Aufheizen der Prozessluft vor ihrem Eintritt in die Trockenkammer und eine Wärmesenke zum Abkühlen der Prozessluft nach ihrem Austritt aus der Trockenkammer aufweist.From the EP 1 669 487 A1 is also a dryer out, which is designed as a washer-dryer and which a drying chamber for receiving a moist material and a substantially closed process air duct for circulating process air through the drying chamber, which process air duct has a heat source for heating the process air before entering the drying chamber and a heat sink for cooling the process air after exiting the drying chamber.

Aus der EP 1 936 022 A1 geht ein Wäschetrockner hervor, welcher zum Zwecke des Aufnehmens von Flusen aus einem die Trockenkammer verlassenden Prozessluftstrom mittels eines entsprechenden Verteilers aus Kondensat, welches während des Trocknens von Wäsche anfällt, einen Wasserfilm bildet, welcher von dem Prozessluftstrom durchsetzt werden muss. Aus diesem Wasserfilm gelangt das mit Flusen belastete Kondensat zurück zu einem Sammler.From the EP 1 936 022 A1 a clothes dryer emerges which, for the purpose of picking up lint from a drying air leaving the drying process air stream by means of a corresponding distributor of condensate, which is obtained during the drying of laundry, forms a water film which must be penetrated by the process air flow. From this water film, the condensate loaded with fluff returns to a collector.

Aus den Schriften EP 1 788 140 A1 , EP 1 788 141 A2 und EP 1 788 142 A2 ist ein Trockner zum Trocknen von Wäsche mittels eines Luftstroms bekannt. Bei dem Trockner ist im Bereich eines Lagerschilds ein Sieb zum Filtern von Flusen aus einem Luftstrom in der Prozessluftführung angeordnet, welches Sieb einen ersten Flusenfilter bildet. Mittels eines Rakels werden die in der Prozessluftführung am Sieb gesammelten Flusen vom Siebgewebe des Flusensiebs abgestreift und in einem benachbart zum Rakel und zum Sieb angeordneten Behälter gespeichert. Der Rakel und der Behälter bilden somit zusammen mit weiteren Komponenten eine erste Reinigungseinrichtung. Der Behälter ist allerdings durch den im Bereich des Rakels zur Verfügung stehenden Bauraums relativ klein dimensioniert. Es lassen sich darin Flusen von etwa 7 bis 10 Trocknungsprozessen sammeln. Da die Flusen im trockenen Zustand gespeichert werden, nehmen sie ein relativ großes Volumen ein. Zum einen ist bei diesen Trocknern die Zugänglichkeit zu dem Sammelbehälter eingeschränkt, und andererseits das Sammelvolumen begrenzt durch dessen Anordnung in einer bauraumbegrenzten Zone des Trockners, wodurch sich ein relativ häufiges Wartungsintervall zur Entsorgung der Flusen aus dem Behälter ergibt. Der Trockner verfügt des Weiteren über eine Heizung als Wärmequelle und einen Luft-Luft-Wärmetauscher als Wärmesenke in der Prozessluftführung.From the scriptures EP 1 788 140 A1 . EP 1 788 141 A2 and EP 1 788 142 A2 For example, a dryer for drying laundry by means of an air flow is known. In the dryer, a screen for filtering lint from an air flow in the process air guide is arranged in the region of a bearing plate, which screen forms a first lint filter. By means of a doctor blade, the lint collected in the process air duct on the screen is stripped off the screen fabric of the lint filter and stored in a container arranged adjacent to the doctor blade and to the screen. The squeegee and the container thus form together with other components a first cleaning device. However, the container is relatively small due to the space available in the area of the squeegee. It can be used to collect lint from about 7 to 10 drying processes. Since the lint is stored in the dry state, they occupy a relatively large volume. On the one hand, the accessibility to the collecting container is restricted in these dryers, and on the other hand, the collecting volume is limited by its arrangement in a space-limited zone of the dryer, resulting in a relatively frequent maintenance interval for disposal of the lint from the container. The dryer also has a heater as a heat source and an air-to-air heat exchanger as a heat sink in the process air duct.

Es ist eine Aufgabe der vorliegenden Erfindung, einen gattungsgemäßen Trockner anzugeben, bei dem das Entfernen von Flusen aus dem Flusenfilter mittels der ersten Reinigungseinrichtung weiter verbessert ist und bei dem weiter vergrößerte Intervalle zur Entsorgung der gesammelten Flusen durch eine Benutzerperson möglich sind.It is an object of the present invention to provide a generic dryer in which the removal of lint from the lint filter by means of the first cleaning device is further improved and in which further enlarged intervals for disposal of the collected lint by a user are possible.

Diese Aufgabe wird durch einen gattungsgemäßen Trockner, welcher die Merkmale des unabhängigen Patentanspruchs aufweist, gelöst. Bevorzugte Weiterbildungen ergeben sich insbesondere aus den abhängigen Patentansprüchen, und bevorzugte Kombinationen von Weiterbildungen insbesondere aus entsprechenden Kombinationen abhängiger Patentansprüche.This object is achieved by a generic dryer, which has the features of the independent claim. Preferred developments emerge in particular from the dependent claims, and preferred combinations of further developments in particular from corresponding combinations of dependent claims.

Der erfindungsgemäße Trockner umfassend eine Trockenkammer zum Aufnehmen eines feuchten Gutes und eine Prozessluftführung zum Zuführen von Prozessluft in die Trockenkammer und zum Abführen von Prozessluft aus der Trockenkammer, wobei die Prozessluftführung insbesondere eine im Wesentlichen geschlossene Prozessluftführung zum Zirkulieren von Prozessluft durch die Trockenkammer ist, welche Prozessluftführung eine Wärmequelle zum Aufheizen der Prozessluft vor ihrem Eintritt in die Trockenkammer und eine Wärmesenke zum Abkühlen der Prozessluft nach ihrem Austritt aus der Trockenkammer, sowie einen zwischen der Trockenkammer und der Wärmesenke angeordneten ersten Flusenfilter aufweist, welchem eine erste Reinigungseinrichtung zugeordnet ist, wobei die erste Reinigungseinrichtung einen Sammler für eine Flüssigkeit, eine an den Sammler angeschlossene erste Spülleitung, ein in dieser ersten Spülleitung befindliches erstes Kontrollorgan, einen an die erste Spülleitung angeschlossenen ersten Verteiler zum Verteilen von durch die erste Spülleitung geförderter Flüssigkeit auf den ersten Flusenfilter und zum Aufnehmen aufgefangener Flusen von dem ersten Flusenfilter, und eine erste Ableitung zum Ableiten der Flüssigkeit mit den aufgenommenen Flusen von dem ersten Flusenfilter umfasst, ist dadurch ausgezeichnet, dass die erste Ableitung eingerichtet ist, um die Flüssigkeit zu dem Sammler abzuleiten, und dass der erste Flusenfilter ein auf einem Träger befestigtes Filtergewebe aufweist, wobei das Filtergewebe zumindest eine Eigenschaft aus der Gruppe umfassend die Eigenschaften hydrophobiert, schmutzabweisend und antibakteriell aufweist.The dryer according to the invention comprises a drying chamber for receiving a moist material and a process air duct for supplying process air into the drying chamber and for discharging process air from the drying chamber, wherein the process air duct is in particular a substantially closed process air duct for circulating process air through the drying chamber, which process air duct a heat source for heating the process air before it enters the drying chamber and a heat sink for cooling the process air after it leaves the drying chamber, and a first lint filter arranged between the drying chamber and the heat sink, to which a first cleaning device is assigned, the first cleaning device a collector for a liquid, a first flushing line connected to the collector, a first control element located in this first flushing line, one connected to the first flushing line The first distributor for distributing liquid conveyed through the first purge line to the first lint filter and for receiving trapped lint from the first lint filter, and a first discharge for discharging the liquid with the captured lint from the first lint filter is characterized in that first derivative is arranged to discharge the liquid to the collector, and that the first lint filter has a filter fabric attached to a carrier, wherein the filter fabric has at least one property from the group comprising the hydrophobic properties, dirt repellent and antibacterial properties.

Somit erfolgt erfindungsgemäß ein Abspülen der Flusen von dem ersten Flusenfilter, indem dieser mit einer geeigneten Flüssigkeit, welche vorzugsweise im Trockner angefallenes und gesammeltes Kondensat ist, abgespült wird und die Flusen somit von der Flüssigkeit aufgenommen und mit dieser abgeführt werden. Damit entfällt das bislang unvermeidliche trockene und Staub verursachende Abkratzen des Flusenfilters, und es entfällt auch das bislang übliche Entsorgen der trockenen Flusen. Dagegen bewirkt die Flüssigkeit, dass die abgespülten Flusen von dieser aufgenommen werden und, in einem zusätzlichen Filter aufgefangen und von der Flüssigkeit getrennt, einen relativ kompakten feuchten Klumpen bilden, der recht einfach und ohne Bildung weiteren Staubes entsorgt werden kann.Thus, according to the invention, the lint is rinsed off the first lint filter by rinsing it with a suitable liquid, which is preferably collected and collected in the dryer, and the lint is thus taken up by the liquid and removed therewith. This eliminates the previously unavoidable dry and dust-causing scrape the lint filter, and it eliminates the hitherto usual disposal of the dry lint. In contrast, the liquid causes the rinsed lint taken up by this and, collected in an additional filter and separated from the liquid, a relatively compact form moist clumps, which can be disposed of quite easily and without the formation of further dust.

Erfindungsgemäß weist der erste Flusenfilter ein auf einem Träger befestigtes Filtergewebe auf, wobei das Filtergewebe zumindest eine Eigenschaft aus der Gruppe umfassend die Eigenschaften hydrophobiert, schmutzabweisend und antibakteriell aufweist. Besonders bevorzugt ist dabei ein Filtergewebe, welches hydrophobiert ist. Alle genannten Eigenschaften können dem Filtergewebe durch eine entsprechende Beschichtung verliehen werden, wobei die Beschichtung in an sich bekannter Weise durch Imprägnierung oder Plasmabeschichtung gebildet sein kann.According to the invention, the first lint filter has a filter fabric fastened on a carrier, wherein the filter fabric has at least one property from the group comprising the properties hydrophobicized, dirt-repellent and antibacterial. Particularly preferred is a filter fabric which is hydrophobed. All of these properties can be imparted to the filter fabric by a corresponding coating, wherein the coating can be formed in a conventional manner by impregnation or plasma coating.

In einer bevorzugten Weiterbildung des erfindungsgemäßen Trockners weist die erste Ableitung einen zweiten Flusenfilter zum Auffangen der aufgenommenen Flusen auf. Der erste Flusenfilter fängt den ganz überwiegenden Teil aller Flusen, die bei einem Trocknungsprozess im Trockner entstehen, auf, und alle diese Flusen gehen in die Spülflüssigkeit über. Der zweite Flusenfilter kann diese Flusen auffangen und stellt sie somit von der Flüssigkeit getrennt als relativ kompakten, leicht entfernbaren Körper zur allfälligen Entsorgung bereit.In a preferred development of the dryer according to the invention, the first discharge has a second lint filter for collecting the lint taken up. The first lint filter captures the vast majority of all lint that occurs during a drying process in the dryer, and all of these fluff go into the rinse. The second lint filter can trap these lint, thus providing them separated from the liquid as a relatively compact, easily removable body for eventual disposal.

In einer außerdem bevorzugten Weiterbildung des erfindungsgemäßen Trockners ist der Sammler der Wärmesenke zum Auffangen von Kondensat, welches in der Wärmesenke aus der Prozessluft ausfällt, zugeordnet. Der Sammler muss sich dabei nicht notwendig in räumlicher Nähe zur Wärmesenke befinden; gemäß an sich geläufiger Praxis kann der Sammler ein insbesondere aus dem Trockner entnehmbares und an einer für eine Bedienperson bequem erreichbaren, von der Wärmesenke beabstandeten Stelle des Trockners platziert sein. Dann kann die Bedienperson den Sammler nach Beendigung des Trocknungsprozesses aus dem Trockner entnehmen und das darin gesammelte Kondensat entsorgen; in diesem Zusammenhang ist es auch möglich, die in dem (entsprechend platzierten) zweiten Flusenfilter aufgefangenen Flusen zu entsorgen. In solchem Zusammenhang besonders bevorzugt ist es, dass in dem entsprechenden Trockner eine Pumpleitung nebst Kondensatpumpe vorgesehen ist, welche die Wärmesenke mit dem Sammler verbindet. Die Pumpleitung kann insbesondere ausgehen von einer an der Wärmesenke platzierten Auffangschale, in welcher sich Kondensat sammelt, welches sich in der Wärmesenke aus dem abgekühlt werdenden Prozessluftstrom gebildet und an der Wärmesenke niedergeschlagen hat und von dieser abtropft. Die Auffangschale kann dabei integraler Bestandteil desjenigen Teils der Prozessluftführung sein, in welchem die Wärmesenke platziert ist.In a further preferred development of the dryer according to the invention, the collector of the heat sink for collecting condensate, which precipitates in the heat sink from the process air, assigned. The collector does not necessarily have to be in close proximity to the heat sink; According to practice known per se, the collector can be placed in particular from the dryer removable and placed on an easily accessible for an operator, spaced from the heat sink body of the dryer. Then the operator can remove the collector from the dryer after completion of the drying process and dispose of the condensate collected therein; In this context, it is also possible to dispose of the lint collected in the second lint filter (appropriately placed). In such a context, it is particularly preferred that a pumping line together with a condensate pump is provided in the corresponding dryer, which connects the heat sink with the collector. The pumping line may in particular start from a collecting tray placed on the heat sink, in which condensate is present collects, which has formed in the heat sink from the cooled process air stream and deposited on the heat sink and dripping from this. The drip tray can be an integral part of that part of the process air duct, in which the heat sink is placed.

Auf die Gattungen und Ausführungen von Wärmequelle und Wärmesenke im erfindungsgemäßen Trockner kommt es in erster Linie nicht an; grundsätzlich sind im Zusammenhang mit der Erfindung Wärmequelle und Wärmesenke jedweder bekannten Gattung und Ausführung denkbar und sinnvoll. Insbesondere kann die Wärmequelle eine elektrisch oder per Verbrennung eines geeigneten Brennstoffs wie Öl und Gas betriebene Heizung sein. Insbesondere kann die Wärmesenke ein mit einem geeigneten Kühlmittel betriebener Wärmetauscher, zum Beispiel ein Luft-Luft-Wärmetauscher, sein.The genres and designs of heat source and heat sink in the dryer according to the invention is not important in the first place; In principle, heat source and heat sink of any known type and design are conceivable and useful in connection with the invention. In particular, the heat source may be a heater operated electrically or by combustion of a suitable fuel such as oil and gas. In particular, the heat sink may be a heat exchanger operated with a suitable coolant, for example an air-to-air heat exchanger.

Besonders bevorzugt ist eine Weiterbildung des erfindungsgemäßen Trockners, bei der die Wärmequelle und die Wärmesenke einer Wärmepumpe zugehörig sind, welche Wärmepumpe eingerichtet ist zum Pumpen von Wärme von der Wärmesenke zur Wärmequelle. Dabei ist bevorzugt, dass der entsprechende Trockner eine zweite Reinigungseinrichtung aufweist, welche eine an den Sammler angeschlossene zweite Spülleitung, ein in dieser zweiten Spülleitung befindliches zweites Kontrollorgan und einen an die zweite Spülleitung angeschlossenen zweiten Verteiler zum Verteilen von durch die zweite Spülleitung geförderter Flüssigkeit auf die Wärmesenke aufweist. In einem mit einer Wärmepumpe gleich welcher Art ausgestatteten Trockner wird Wärme, die der Prozessluft durch die Wärmequelle zugeführt und aus der Prozessluft in der Wärmesenke abgeführt wurde, wieder der Wärmequelle und durch diese erneut der Prozessluft zugeführt werden, woraus eine erhebliche Ersparnis an Energie für den Trocknungsprozess im Trockner verbunden sein kann. Insbesondere dann, wenn die Wärmepumpe eine thermoelektrische Wärmepumpe oder eine Wärmepumpe des Kompressor-Typs ist, muss gemäß herkömmlicher Praxis die Wärmesenke unlösbar mit weiteren Komponenten der Wärmepumpe verbunden sein und kann nicht wie ein herkömmlicher Luft-Luft-Wärmetauscher zwecks Reinigung aus dem Trockner entnommen werden. Dann ist es besonders günstig, der Wärmesenke eine zweite Reinigungseinrichtung zuzuordnen, durch welche die Wärmesenke von Flusen, die vom ersten Flusenfilter nicht aufgefangen werden konnten und sich an ihr angehaftet haben, zu reinigen. Wenn auch diese zweite Reinigungseinrichtung mit Flüssigkeit arbeitet, dann kann sie in besonders vorteilhafter Weise mit der ersten Reinigungseinrichtung vereinigt sein, wie es hier beschrieben ist.Particularly preferred is a development of the dryer according to the invention, in which the heat source and the heat sink of a heat pump are associated, which heat pump is arranged to pump heat from the heat sink to the heat source. It is preferred that the corresponding dryer has a second cleaning device which comprises a second flushing line connected to the collector, a second control element located in this second flushing line and a second distributor connected to the second flushing line for distributing liquid conveyed through the second flushing line to the second flushing line Has heat sink. In a equipped with a heat pump of any kind dryer heat that has been supplied to the process air by the heat source and discharged from the process air in the heat sink, the heat source and through this again the process air are supplied, resulting in a significant savings in energy for the Drying process in the dryer can be connected. In particular, when the heat pump is a thermoelectric heat pump or a heat pump of the compressor type, according to conventional practice, the heat sink must be permanently connected to other components of the heat pump and can not be removed from the dryer for cleaning like a conventional air-to-air heat exchanger , Then it is particularly favorable to assign the heat sink a second cleaning device by which the heat sink of lint that could not be caught by the first lint filter and have adhered to it to clean. If this second cleaning device works with liquid, then it can be combined in a particularly advantageous manner with the first cleaning device, as described here.

Gemäß einer anderen bevorzugten Weiterbildung ist der erfindungsgemäße Trockner eingerichtet als Wäschetrockner zum Trocknen eines feuchten Gutes, welches Wäsche ist. Dabei ist weiter bevorzugt, dass die Trockenkammer eine drehbare Trommel ist.According to another preferred refinement, the dryer according to the invention is set up as a tumble dryer for drying a moist material, which is laundry. It is further preferred that the drying chamber is a rotatable drum.

Besonders bevorzugt ist es auch, dass der erfindungsgemäße Trockner als ein Hausgerät ausgebildet ist.It is also particularly preferred that the dryer according to the invention is designed as a domestic appliance.

Ausführungsbeispiele der Erfindung sind nachfolgend anhand der Zeichnung erläutert. In der Zeichnung zeigen:

Fig. 1
eine Skizze eines Hausgeräts, ausgestaltet als Wäschetrockner;
Fig. 2
einen ersten Flusenfilter nebst erstem Verteiler für Spülflüssigkeit;
Fig. 3
eine Teilansicht eines Wäschetrockners im Schnitt; und
Fig. 4
eine Teilansicht eines anderen Wäschetrockners im Schnitt.
Embodiments of the invention are explained below with reference to the drawing. In the drawing show:
Fig. 1
a sketch of a household appliance, designed as a clothes dryer;
Fig. 2
a first lint filter together with first distributor for rinsing liquid;
Fig. 3
a partial view of a tumble dryer in section; and
Fig. 4
a partial view of another dryer in section.

Wie in Figur 1 dargestellt, umfasst der Trockner 1, hier ein Wäschetrockner 1, eine als drehbare Trommel ausgestaltete Trockenkammer 2, welche feuchtes Gut 3, hier Wäsche 3, zum Trocknen aufnimmt. Für den in Figur 1 dargestellten Trockner 1 ist eine geschlossene Prozessluftführung 4 vorgesehen, in welcher angetrieben durch ein Gebläse 5 ein Prozessluftstrom zirkuliert, welcher Feuchtigkeit aus der Wäsche 3 aufnimmt und abführt. In einer Wärmequelle 6 wird die Prozessluft vor ihrem Eintritt in die Trockenkammer 2 erwärmt. Nachdem die so erwärmte Prozessluft die auf Grund der Rotation der Trockenkammer 2 in dieser umher fallende Wäsche 3 unter Aufnehmen von Feuchtigkeit umströmt hat, verlässt sie die Trockenkammer 2 und gelangt zu einer Wärmesenke 7. Dort wird sie abgekühlt, so dass die mitgeführte Feuchtigkeit auskondensiert, sich als Kondensat in flüssiger Form an den Strukturen der Wärmesenke 7 niederschlägt und in eine unter dieser angeordneten Auffangschale 8 abtropft. Aus der Auffangschale 8 gelangt solches Kondensat über die Pumpleitung 9, in welche eine Kondensatpumpe 10 eingefügt ist, zu einem Sammler 11. Dieser Sammler 11 ist so ausgestaltet, dass er nach Beendigung eines Trocknungsprozesses aus dem Trockner 1 entnommen werden kann, um die Flüssigkeit aus ihm auszugießen und einer geeigneten Entsorgung zuzuführen.As in FIG. 1 illustrated, the dryer 1, here a tumble dryer 1, designed as a rotatable drum drying chamber 2, which receives moist material 3, here laundry 3, for drying. For the in FIG. 1 1, a closed process air guide 4 is provided, in which driven by a fan 5, a process air flow circulates, which absorbs moisture from the laundry 3 and dissipates. In a heat source 6, the process air is heated before it enters the drying chamber 2. After the thus heated process air has flowed around due to the rotation of the drying chamber 2 in this surrounding laundry 3 while absorbing moisture, it leaves the drying chamber 2 and reaches a heat sink 7. There it is cooled so that the entrained moisture condenses out, precipitated as condensate in liquid form on the structures of the heat sink 7 and dripped into a collecting tray 8 arranged under this. From the collecting tray 8 such condensate passes through the pumping line 9, in which a condensate pump 10 is inserted, to a collector 11. This collector 11 is designed so that it is finished after completion of a drying process from the dryer. 1 can be removed to pour the liquid out of him and supply it to a suitable disposal.

Zwischen der Trockenkammer 2 und der Wärmesenke 7 ist in der Prozessluftführung 4 ein erster Flusenfilter 12 angeordnet. Dieser erste Flusenfilter 12 ist notwendig, um Flusen, dies sind feine, staubartige Faserpartikel und dergleichen, welche die strömende Prozessluft der Wäsche 3 entreißt, aufzufangen, damit diese nicht zur Wärmesenke 7 gelangen und diese verunreinigen. Dies ist vor allem deshalb erforderlich, weil Flusen, die sich auf entsprechend ausgesetzten Oberflächen der Wärmesenke 7 niederschlagen, die Wärmeleitfähigkeit der Strukturen innerhalb der Wärmesenke 7 erheblich verschlechtern können, so dass der Betrieb des Trockners 1 beeinträchtigt oder gar gefährdet werden kann. Allerdings ist auch die Anwesenheit des ersten Flusenfilters 12 in der Prozessluftführung 4 nicht frei von möglichen Beeinträchtigungen, denn auch der erste Flusenfilter 12 stellt ein unter Umständen erhebliches Strömungshindernis in der Prozessluftführung 4 dar, wenn er sich im Laufe eines Trocknungsprozesses mit Flusen zusetzt.Between the drying chamber 2 and the heat sink 7, a first lint filter 12 is arranged in the process air guide 4. This first lint filter 12 is necessary to lint, these are fine, dust-like fiber particles and the like, which entraises the flowing process air of the laundry 3, so that they do not reach the heat sink 7 and contaminate it. This is necessary above all because lint that precipitate on appropriately exposed surfaces of the heat sink 7, the thermal conductivity of the structures within the heat sink 7 can significantly deteriorate, so that the operation of the dryer 1 can be affected or even endangered. However, the presence of the first lint filter 12 in the process air guide 4 is not free of possible impairments, because even the first lint filter 12 is a significant flow obstacle in the process air 4, if it clogs in the course of a drying process with lint.

Um diese Beeinträchtigung zu vermeiden und außerdem eine praktische Möglichkeit zur Entfernung der Flusen aus dem Trockner 1 zu schaffen, ist dem ersten Flusenfilter 12 eine erste Reinigungseinrichtung 13, 1, 15, 16, 17, zugeordnet, mit welcher der erste Flusenfilter 12 unter Anwendung des im Sammler 11 gespeicherten Kondensats von Flusen befreit werden kann. Dazu ist an den Sammler 11 eine erste Spülleitung 13 angeschlossen, welche über ein erstes Kontrollorgan 14 zu einem an dem ersten Flusenfilter 12 angeordneten ersten Verteiler 15 gelangt, durch welchen Kondensat aus dem Sammler über den ersten Flusenfilter 12 verteilt werden kann, damit dieses Kondensat die auf dem ersten Flusenfilter 12 abgelagerten Flusen aufnimmt und abführt. Solches mit Flusen beladenes Kondensat gelangt durch eine erste Ableitung 16 zu einem zweiten Flusenfilter 17, welcher die aufgenommenen Flusen aus dem Kondensat auffängt, worauf das Kondensat wiederum der Auffangschale 8 zufließt, um aus dieser mittels der Kondensatpumpe 10 zurück zum Sammler 11 befördert zu werden. Im zweiten Flusenfilter 17 fallen die Flusen an als kompakter, feuchter Klumpen, welcher dem zweiten Flusenfilter 17 vergleichsweise einfach entnommen und entsorgt werden kann. Das Kondensat im Sammler 11 bleibt einigermaßen frei von Flusen, so dass es in bekannter Weise an Stelle destillierten Wassers verwendet werden kann, beispielsweise zum Bügeln von Wäsche. In einer alternativen nicht dargestellten Ausführung des Trockners 1 kann der Sammler 11 ausschließlich oder zusätzlich mit aus einer Hauswasserversorgung entnommenem Frischwasser befüllt werden. Hierdurch kann sichergestellt werden, dass der Sammler 11 immer die zur Reinigung des Flusenfilters 12 erforderliche Menge an Flüssigkeit enthält.To avoid this impairment and also to provide a convenient way to remove the lint from the dryer 1, the first lint filter 12, a first cleaning device 13, 1, 15, 16, 17, associated with which the first lint filter 12 using the Can be freed of lint stored in the collector 11 condensate. For this purpose, a first purge line 13 is connected to the collector 11, which passes through a first control member 14 to a arranged on the first lint filter 12 first manifold 15, through which condensate can be distributed from the collector via the first lint filter 12, so that this condensate on the first lint filter 12 deposits lint and dissipates. Such loaded with lint condensate passes through a first discharge line 16 to a second lint filter 17, which catches the lint taken from the condensate, whereupon the condensate in turn the drip tray 8 flows to be transported from this by means of the condensate pump 10 back to the collector 11. In the second lint filter 17, the lint is a compact, moist lump, which can be relatively easily removed and disposed of the second lint filter 17. The condensate in the collector 11 remains reasonably free of lint, so that it can be used in a known manner instead of distilled water, for example for ironing laundry. In an alternative embodiment of the dryer 1, not shown, the collector 11 can be filled exclusively or additionally with fresh water taken from a domestic water supply. In this way it can be ensured that the collector 11 always contains the amount of liquid required for cleaning the lint filter 12.

Die Wärmequelle 6 und die Wärmesenke 7 sind im vorliegend dargestellten Ausführungsbeispiel eingebunden in eine Wärmepumpe 6, 7, 20, 21, 22, in welcher Wärme, die der Prozessluft in der Wärmesenke 7 entzogen wird, zur Wärmequelle 6 gepumpt und dort der Prozessluft wieder zugeführt wird. Dazu dient ein geschlossener Kältemittelkreislauf 20, in welchem ein Kältemittel zirkuliert. Unter einem Kältemittel ist eine unter geeigneten Bedingungen hinsichtlich Druck und Temperatur reversibel verdampfbare und kondensierbare Substanz zu verstehen. Diese Substanz kann vorliegend Propan, Kohlendioxid oder eine fluorierte Kohlenwasserstoffverbindung wie die bekannten R134a, R152a, R407C und R410a sein - wobei die beiden letztgenannten Substanzen Gemische mehrerer fluorierter Kohlenwasserstoffverbindungen sind. In jedem Fall gelangt das Kältemittel im Kältemittelkreislauf 20 in flüssiger Form zur Wärmesenke 7, wo es unter Aufnehmen von Wärme aus der ebenfalls durchströmenden Prozessluft verdampft. Ein Kompressor 21 im Kältemittelkreislauf 20 komprimiert das verdampfte Kältemittel und fördert es zur Wärmequelle 6. Dort verflüssigt sich das Kältemittel, indem es Wärme an die durchströmende Prozessluft abgibt. In flüssiger Form fließt das Kältemittel nun im Kältemittelkreislauf 20 einer Drossel 22, dargestellt durch ein Ventil, eine Kapillare oder eine Blende, zu, wo es auf einen erniedrigten Druck entspannt wird. In dieser Form gelangt es zurück zur Wärmesenke 7, um dort erneut zu verdampfen. Der Kältemittelkreislauf 20 muss vollständig in sich geschlossen sein, um über die zu erwartende betriebliche Lebensdauer des Trockners 1 ein vollständiges Einschließen des Kältemittels zu gewährleisten.The heat source 6 and the heat sink 7 are integrated in the present embodiment illustrated in a heat pump 6, 7, 20, 21, 22, in which heat, which is withdrawn from the process air in the heat sink 7, pumped to the heat source 6 and fed back there the process air becomes. The purpose of a closed refrigerant circuit 20, in which a refrigerant circulates. Under a refrigerant is under suitable conditions in terms of pressure and temperature reversibly vaporizable and condensable substance to understand. This substance may be present propane, carbon dioxide or a fluorinated hydrocarbon compound such as the known R134a, R152a, R407C and R410a - the latter two substances are mixtures of several fluorinated hydrocarbon compounds. In any case, the refrigerant passes in the refrigerant circuit 20 in liquid form to the heat sink 7, where it evaporates while absorbing heat from the process air also flowing through. A compressor 21 in the refrigerant circuit 20 compresses the evaporated refrigerant and delivers it to the heat source 6. There, the refrigerant liquefies by giving off heat to the process air flowing through. In liquid form, the refrigerant now flows in the refrigerant circuit 20 of a throttle 22, represented by a valve, a capillary or an orifice, to where it is expanded to a reduced pressure. In this form, it returns to the heat sink 7 to re-evaporate there. The refrigerant circuit 20 must be completely self-contained in order to ensure complete enclosure of the refrigerant over the expected service life of the dryer 1.

In der Praxis ist der erste Flusenfilter 12 nicht in der Lage, die von der Prozessluft mitgeführten Flusen vollständig aufzunehmen; es ist immer damit zu rechnen, dass eine wenn auch äußerst feinteilige Fraktion der Flusen durch den Flusenfilter 12 hindurch gelangt, ohne von ihm aufgefangen zu werden. Diese feinteiligen Flusen schlagen sich dann mehr oder weniger vollständig in der Wärmesenke 7 nieder, wobei das dort auftretende Kondensat sie an die entsprechend ausgesetzten Oberflächen der Wärmesenke 7 haften lässt. Diese Flusen können, gegebenenfalls über eine größere Anzahl von Trocknungsprozessen im Trockner 1 hinweg, die Funktion der Wärmesenke 7 erheblich beeinträchtigen. Vorliegend kommt erschwerend hinzu, dass wegen der zu fordernden vollständigen Abdichtung des Kältemittelkreislaufs 20 ein Entnehmen der Wärmesenke 7 aus dem Trockner 1 zum Zwecke der Reinigung nicht möglich ist. Deshalb ist der Wärmesenke 7 eine zweite Reinigungseinrichtung 23, 24, 25 zugeordnet, mit welcher ebenfalls das im Sammler 11 gesammelte Kondensat genutzt werden kann, um die der Prozessluft ausgesetzten Oberflächen der Wärmesenke 7 abzuspülen und die anfallenden Flusen zu entfernen. Dazu ist an den Sammler eine zweite Spülleitung 23 nebst eingefügtem zweitem Kontrollorgan 24 zugeordnet, welche den Sammler 11 mit einem an der Wärmesenke 7 platzierten zweiten Verteiler 25 verbindet. Über diesen zweiten Verteiler 2 gelangt Kondensat aus dem Sammler 11 zur Wärmesenke 7 und kann die dort niedergeschlagenen Flusen abspülen. Das solcher Art mit Flusen beladene Kondensat tropft ab in die Auffangschale 8 und wird von dort mittels der Kondensatpumpe 10 wiederum dem Sammler 11 zugeführt. Da der erste Flusenfilter 12 den überwiegenden Teil aller Flusen auffängt, ist die Wärmesenke 7 nur vergleichsweise gering belastet, und die dort niedergeschlagenen Flusen sind relativ feinteilig. Dementsprechend ist nicht zu befürchten, dass diese Flusen z. B. Pumpleitung 9 oder die Kondensatpumpe 10 oder auch die weitere Verwendbarkeit des im Sammler 11 gesammelten Kondensats beeinträchtigen könnten.In practice, the first lint filter 12 is incapable of completely receiving the fluff entrained by the process air; It is always to be expected that a fraction of the lint, though extremely finely divided, passes through the lint filter 12 without being caught by it. These finely divided lint are then more or less completely settled in the heat sink 7, wherein the condensate occurring there, they to the corresponding exposed surfaces of the Heat sink 7 can adhere. These fluff can, if appropriate over a larger number of drying processes in the dryer 1 away, significantly affect the function of the heat sink 7. In the present case, it is aggravating that because of the required complete sealing of the refrigerant circuit 20, removal of the heat sink 7 from the dryer 1 is not possible for the purpose of cleaning. Therefore, the heat sink 7 is associated with a second cleaning device 23, 24, 25, with which also in the collector 11 collected condensate can be used to rinse the process air exposed surfaces of the heat sink 7 and remove the resulting lint. For this purpose, a second purge line 23 together with an inserted second control element 24 is assigned to the collector, which connects the collector 11 with a second distributor 25 placed on the heat sink 7. Via this second distributor 2, condensate passes from the collector 11 to the heat sink 7 and can rinse off the fluff deposited there. The condensate laden with such fluff drips off into the collecting tray 8 and is in turn fed to the collector 11 from there by means of the condensate pump 10. Since the first lint filter 12 catches the majority of all lint, the heat sink 7 is loaded only comparatively low, and the fluff deposited there are relatively finely divided. Accordingly, it is not to be feared that these fluff z. B. pumping line 9 or the condensate pump 10 or the further usability of the condensate collected in the collector 11 could affect.

Die Kotrollorgane 14 und 24 sind vorliegend jeweils dargestellt als einfaches Ventil 14 bzw. 24. Für einen Fall, dass eine relativ starke Strömung des Kondensats zu dem entsprechenden Reinigungszweck gewünscht ist, kann zusätzlich zu jedem solchen Ventil 14 bzw. 24 eine Pumpe vorgesehen sein. Gegebenenfalls könnte auch eine einzige Pumpe beiden Ventilen 14 bzw. 24 zugeordnet sein.The Kotrollorgane 14 and 24 are presently shown in each case as a simple valve 14 and 24. In a case that a relatively strong flow of the condensate is desired for the corresponding cleaning purpose, in addition to each such valve 14 and 24 may be provided a pump. Optionally, a single pump could be assigned to both valves 14 and 24, respectively.

Im Trockner 1 ist eine Kontrolleinrichtung 26 vorgesehen. Diese dient einem Benutzer des Trockners 1 dazu, für den gewünschten Trocknungsprozess ein Programm aus einer Vielzahl angebotener Programme auszuwählen, enthält eine Anzeigeeinrichtung, um einen Benutzer mit notwendiger Information zu versehen und steuert überdies alle steuerbaren Komponenten des Trockners 1. Entsprechende Kontrollleitungen sind in Figur 1 der Übersicht halber nicht dargestellt.In the dryer 1, a control device 26 is provided. This serves a user of the dryer 1 to select a program from among a variety of programs offered for the desired drying process, includes a display device to provide a user with necessary information, and controls all controllable components of the dryer 1. Corresponding control lines are shown in FIG FIG. 1 not shown for clarity.

Figur 2 zeigt einen ersten Flusenfilter 12, welcher aufgebaut ist mit einem Träger 18, der ein Filtergewebe 19 trägt. Entlang des Pfeils wird das Filtergewebe 19 von Prozessluft durchströmt, wobei darin enthaltenen Flusen auf dem Filtergewebe 19 abgesetzt werden. Das Filtergewebe 19 besteht aus einem oberflächenbehandelten Material, welches wasserabweisend oder schmutzabweisend ausgerüstet ist. Dadurch wird die Reinigungswirkung der Flüssigkeit, die das Filtergewebe 19 überfließt, ohne jedoch durch dieses hindurch zu gelangen, beim Aufnehmen der Flusen von dem Filtergewebe 19 unterstützt. Gezeigt ist auch der an dem ersten Flusenfilter 12 angeordnete Verteiler 15, aus dem das zum Abspülen verwendete Kondensat durch eine Vielzahl von Löchern austreten kann, um das Filtergewebe 19 zu überfließen und die dort abgelagerten Flusen aufzunehmen. Im übrigen wäre es unkritisch, wenn ein Teil der Flüssigkeit das Filtergewebe 19 durchdränge, da (vgl. Figur 1) in der Prozessluftführung 4 auf den Flusenfilter 12 ohnehin die Wärmesenke 7 folgt, in welcher es zum Ausfallen von Kondensat aus dem Prozessluftstrom kommt und die eventuell durchgedrungene Flüssigkeit mit dem Kondensat zusammen abgeführt werden würde. In Figur 2 sind kreisrunde Löcher dargestellt; alternativ könnte statt der Löcher ein entsprechend langer Schlitz oder eine Anordnung mehrerer hintereinander liegender länglicher Schlitze vorgesehen sein. FIG. 2 shows a first lint filter 12 which is constructed with a carrier 18 which carries a filter cloth 19. Along the arrow, the filter fabric 19 is flowed through by process air, wherein lint contained therein are deposited on the filter fabric 19. The filter fabric 19 consists of a surface-treated material which is water-repellent or dirt-repellent equipped. As a result, the cleaning action of the liquid which overflows the filter fabric 19, but without passing through it, is supported by the filter fabric 19 when the lint is picked up. Shown is also arranged on the first lint filter 12 manifold 15 from which the condensate used for rinsing can escape through a plurality of holes to overflow the filter fabric 19 and receive the lint deposited there. Moreover, it would be uncritical if a part of the liquid penetrate the filter fabric 19, since (see. FIG. 1 ) in the process air duct 4 on the lint filter 12, the heat sink 7 follows anyway, in which it comes to the precipitation of condensate from the process air flow and the possibly permeated liquid would be removed together with the condensate. In FIG. 2 circular holes are shown; Alternatively, instead of the holes, a correspondingly long slot or an arrangement of a plurality of successive elongated slots may be provided.

Figur 3 zeigt einen Teil eines Trockners 1 als Schnittansicht. Dargestellt ist ein Schnitt durch einen frontseitigen Lagerschild des Trockners 1, an welchen sich, siehe Bezugszeichen 2, die Trockenkammer 2 anschließt. Die durch schwarze Pfeile symbolisierte Prozessluft tritt von rechts oben aus der Trockenkammer 2 aus und strömt durch den relativ zu ihr schräg gestellten ersten Flusenfilter 12 in einer Richtung vertikal nach unten, um nach einer Umlenkung in eine horizontale Richtung zur Wärmesenke 7 zu gelangen. Aus dem nur andeutungsweise sichtbaren ersten Verteiler 15 fließt Kondensat als Spülwasser 28 über den schräg gestellten Flusenfilter 12, wobei es dort abgelagerte Flusen aufnimmt, und gelangt durch eine erste Ableitung 16 in eine Kammer, welche gebildet ist von einer entnehmbaren Klappe 30 und einer Trennwand 29. In einem unteren Bereich ist die Trennwand 29 durchlässig, damit das Spülwasser hindurch und zur Auffangschale 8 gelangen kann, so dass die Flusen im unteren Bereich der Kammer zurückbleiben. Die Kammer ist entnehmbar, damit die Flusen entsorgt werden können. FIG. 3 shows a part of a dryer 1 as a sectional view. Shown is a section through a front-side end plate of the dryer 1, to which, see reference numeral 2, the drying chamber 2 is connected. The symbolized by black arrows process air exits from the top right from the drying chamber 2 and flows through the inclined relative to her first lint filter 12 in a direction vertically downwards to arrive after a deflection in a horizontal direction to the heat sink 7. From the only slightly visible first manifold 15 condensate flows as flushing water 28 on the inclined lint filter 12, where it absorbs deposited lint, and passes through a first discharge line 16 into a chamber which is formed by a removable flap 30 and a partition 29th In a lower region, the partition wall 29 is permeable so that the rinse water can pass through and to the drip tray 8, so that the lint remains in the lower region of the chamber. The chamber is removable, so that the lint can be disposed of.

Die Ausgestaltung des in Figur 4 dargestellten Trockners 1 entspricht weitgehend der Ausgestaltung gemäß Figur 3, wobei allerdings hinter der Klappe 30 ein Filterbeutel 31 vorgesehen ist. Dieser Filterbeutel 31 besteht aus durchlässigem Papier oder Textil und nimmt die vom Flusenfilter 12 mittels des Spülwassers 28 abgespülten Flusen auf. Wenn sich der Filterbeutel 31 hinreichend mit solchen Flusen gefüllt hat, kann er durch Öffnen der Klappe 30 entnommen werden. Dadurch können die Flusen entsorgt werden, ohne dass sie unmittelbar berührt werden müssen.The design of the in FIG. 4 shown dryer 1 largely corresponds to the embodiment according to FIG. 3 , however, behind the flap 30, a filter bag 31 is provided. This filter bag 31 is made of permeable paper or textile and absorbs the lint removed from the lint filter 12 by means of the rinsing water 28 lint. If the filter bag 31 has sufficiently filled with such lint, it can be removed by opening the flap 30. This allows the lint to be disposed of without having to be touched directly.

Mit der Erfindung wird eine neue Möglichkeit geschaffen, die in einem Trockner für Wäsche oder dergleichen notwendiger Weise anfallenden Flusen so zu entsorgen, dass eine Beeinträchtigung jedes Trocknungsprozesses weitestgehend verhindert wird, und wobei die Flusen in eine zur Entsorgung besonders geeignete, kompakte Form gebracht werden. Dieser Trockner zeichnet sich deshalb aus durch eine besondere Einfachheit der Benutzung.With the invention, a new possibility is created to dispose of the lint necessary in a dryer for laundry or the like so incurred that an impairment of any drying process is largely prevented, and wherein the lint are brought into a particularly suitable for disposal, compact form. This dryer is therefore characterized by a particular simplicity of use.

Die Erfindung kann auch in einem Trockner angewendet werden, welcher eine offene Prozessluftführung 4 aufweist, wie sie bei so genannten Auflufttrocknern üblich ist, d.h. die Prozessluft wird aus der den Trockner umgebenen Raumluft entnommen, der Trockenkammer 2 zugeführt und die aus der Trockenkammer 2 abgeführte Prozessluft wird wieder an die Raumluft abgegeben. Ansonsten weist dieser Trockner auch die vom vorstehend dargestellten Trockner 1 umfassten Einrichtungen ebenfalls auf.The invention can also be applied in a dryer which has an open process air duct 4, as is customary in so-called drier dryers, ie the process air is taken from the room air surrounding the dryer, the drying chamber 2 is supplied and the process air discharged from the drying chamber 2 is returned to the room air. Otherwise, this dryer also has the facilities covered by the dryer 1 shown above also.

BEZUGSZEICHENREFERENCE NUMBERS

1.1.
Trocknerdryer
2.Second
Trockenkammerdrying chamber
3.Third
Feuchtes Gut, WäscheWet good, laundry
4.4th
ProzessluftführungProcess air supply
5.5th
Gebläsefan
6.6th
Wärmequelleheat source
7.7th
Wärmesenkeheat sink
8.8th.
Auffangschaledrip tray
9.9th
Pumpleitungpumping line
10.10th
Kondensatpumpecondensate pump
11.11th
Erste Reinigungseinrichtung, SammlerFirst cleaning device, collector
12.12th
Erster FlusenfilterFirst lint filter
13.13th
Erste Reinigungseinrichtung, erste SpülleitungFirst cleaning device, first flushing line
14.14th
Erste Reinigungseinrichtung, erstes KontrollorganFirst cleaning device, first control device
15.15th
Erste Reinigungseinrichtung, erster VerteilerFirst cleaning device, first distributor
16.16th
Erste Reinigungseinrichtung, erste AbleitungFirst cleaning device, first discharge
17.17th
Erste Reinigungseinrichtung, zweiter FlusenfilterFirst cleaning device, second lint filter
18.18th
Trägercarrier
19.19th
Filtergewebefilter cloth
20.20th
KältemittelkreislaufRefrigerant circulation
21.21st
Kompressorcompressor
22.22nd
Drosselthrottle
23.23rd
Zweite SpülleitungSecond purge line
24.24th
Zweites KontrollorganSecond controlling body
25.25th
Zweiter VerteilerSecond distributor
26.26th
Kontrolleinrichtungcontrol device
27.27th
Prozessluftprocess air
28.28th
Spülwasserdishwater
29.29th
Trennwandpartition wall
30.30th
Klappeflap
31.31st
Filterbeutelfilter bag

Claims (10)

  1. Dryer (1) comprising a drying chamber (2) for accepting damp items (3) and a process air duct (4) for feeding process air into the drying chamber (2) and for extracting process air from the drying chamber (2), with said process air duct (4) having a heat source (6) for heating the process air before it enters the drying chamber (2) and a heat sink (7) for cooling the process air after it leaves the drying chamber (2) as well as a first lint filter (12) arranged between the drying chamber (2) and the heat sink (7) for catching lint from the process air, to which a first cleaning device (11, 13, 14, 15, 16, 17) is assigned,
    wherein the first cleaning device (11, 13, 14, 15, 16, 17) comprises an accumulator (11) for a liquid, a first rinsing line (13) connected to the accumulator (11), a first control organ (14) located in this first rinsing line (13) and a first distributor (15) connected to the first rinsing line (13) for distributing liquid conveyed through the first rinsing line (13) on the first lint filter (12) and for accepting lint caught by the first lint filter (12), a first drain line (16) for draining away the liquid with the accepted lint from the first lint filter (12), characterised in that the first drain line is configured to drain away the liquid to the accumulator (11), and that the first lint filter (8) has a filter material (19) attached to a carrier (18), wherein the filter material (19) has at least one property from the group comprising the properties hydrophobicised, contamination-repellent and antibacterial.
  2. Dryer according to claim 1, in which the process air duct (4) is a substantially closed process air duct (4) for circulating process air through the drying chamber (2).
  3. Dryer according to claim 1 or 2, in which the first drain line (16) has a second lint filter (17) for catching the accepted lint.
  4. Dryer (1) according to one of the preceding claims, in which the accumulator (11) is assigned to the heat sink (7) for catching condensate which falls from the process air in the heat sink (7).
  5. Dryer according to claim 4, in which a pump line (9) along with the condensate pump (10) is provided which connects the heat sink (7) to the accumulator (11).
  6. Dryer (1) according to one of the preceding claims, in which the heat source (6) and the heat sink (7) belong to a heat pump (6, 7, 20, 21, 22), with said heat pump (6, 7, 20, 21, 22) being configured for pumping heat from the heat sink (7) to the heat source (6).
  7. Dryer (1) according to claim 6, having a second cleaning device (23, 24, 25), which comprises a second rinsing line (23) connected to the accumulator (11), a second control organ (24) located in this second rinsing line (23) and a second distributor (25) connected to the second rinsing line (23) for distributing liquid conveyed through the second rinsing line (23) to the heat sink (7).
  8. Dryer (1) according to one of the preceding claims, which is configured as a tumble dryer for drying moist items (3), which are laundry (3).
  9. Dryer (1) according to claim 8, in which the drying chamber (2) is a rotatable drum (2).
  10. Dryer (1) according to one of claims 8 and 9 which is embodied as a household appliance (1).
EP09782501.2A 2008-09-11 2009-09-02 Dryer having a lint filter and a cleaning device Active EP2334864B1 (en)

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DE102008041998A DE102008041998A1 (en) 2008-09-11 2008-09-11 Dryer with a lint filter and a cleaning device
PCT/EP2009/061329 WO2010028992A1 (en) 2008-09-11 2009-09-02 Dryer having a lint filter and a cleaning device

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EP2334864B1 true EP2334864B1 (en) 2017-06-07

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US (1) US8438750B2 (en)
EP (1) EP2334864B1 (en)
CN (1) CN102149866B (en)
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EA017943B1 (en) 2013-04-30
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CN102149866B (en) 2013-01-16
US20110167662A1 (en) 2011-07-14
DE102008041998A1 (en) 2010-03-18
CN102149866A (en) 2011-08-10
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EP2334864A1 (en) 2011-06-22
WO2010028992A1 (en) 2010-03-18

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