EP1968424B1 - Domestic appliance comprising an adsorption unit and method for operating a domestic appliance of this type - Google Patents

Description

The invention relates to a domestic appliance comprising an adsorption apparatus which contains an adsorption vessel containing a solid adsorbent and a heating device for heating the adsorbent, at least one phase transfer vessel with a connecting line connecting it to the adsorption vessel and a volatile adsorbent adsorbable reversibly by the adsorbent, and comprising one Process air duct in which the adsorption vessel is designed as a heat exchanger for heating a stream of air flowing in the process air duct and acting on the adsorption vessel; In this case, the adsorption apparatus is set up for alternatively and reversibly assuming a first operating state in which the adsorption vessel is acted upon by an air stream flowing in the process air guide and in which at least one phase transfer vessel adsorbs vaporising adsorptive, and a second operating state in which the adsorbent is heated by the heating device and desorbs the adsorptive, wherein desorbed adsorbate condenses in the phase transfer vessel.

Moreover, the invention relates to a method for operating such a household appliance.

From the EP 0 777 998 B1 goes out such equipped with an adsorption appliance domestic appliance in the form of a tumble dryer and a method for its operation. The adsorption apparatus is intended to support a drying process with the aim of saving energy.

From the WO 2005/053502 A1 is also such a household appliance. This domestic appliance is designed as a dishwasher with a device for drying a moist ware, which device has a heat pump equipped with an adsorption apparatus. The adsorbent, in particular a zeolite, is contained in a first vessel designed as a heat exchanger. The adsorptive, in particular water, can circulate between the first vessel and a second vessel, likewise designed as a heat exchanger, and a connecting line between the vessels.

A first operating state of the adsorption apparatus according to WO 2005/053502 A1 is that adsorbent adsorbs adsorbing vapor from the second vessel; The adsorbent heats up in the first vessel and the adsorptive in the second vessel cools down. Moist air, which is drawn off in a circuit from a treatment chamber with moist items, cools as it flows past the second vessel, and moisture contained condenses out and is removed from the air flow. This then passes to the first vessel, where it is reheated, and as a dry, hot air stream back into the treatment chamber. In this way, the Spulgut is dried.

A second operating state of this adsorption apparatus is that the adsorbent loaded with the adsorbent is heated with a heater. As a result, the adsorptive is expelled from the adsorbent and passes through the connecting line in the second vessel, where it condenses. This is supported by the fact that the second vessel is cooled by a circulating in the circulation as just described air flow. The thus heated air flow is used to preheat existing in the treatment chamber dishes and / or rinse water.

From the DE 1 410 206 A is a washing machine, in which laundry not only washed, but also can be dried. For the additional facilities required for this, the document shows several alternatives; In particular, an electric heating device for heating an air stream used for drying laundry and a simple heat exchanger for cooling the heated air stream after the loading of the laundry may be provided, but the heater and the cooler may also belong to a heat pump device.

On the Internet is on December 9, 2005 at the address
http://de.wikipedia.org/wiki/Zeolith
a document has been publicly available in which the materials belonging to the generic term "zeolite" are described. These materials are aluminum silicate substances of complex composition, some of which are naturally available and partly artificially produced and are in particular capable of accumulating larger quantities Water. The disclosure of this document is attributable to this disclosure in its entirety.

The operation of a home appliance with adsorption apparatus of the type described above can be such that during a period of operation within which a laundry item or dishes are dried, the adsorption apparatus assumes the first and second operating conditions only once; it may also be determined that the adsorption apparatus reversibly takes the first and the second operating state. In such a case, it depends on whether the adsorption apparatus can be displaced sufficiently quickly and easily from one given to another operating state. In no case is it practical if such a change leads to a significant stay in the operation of the household appliance.

It is an object of the invention to provide a domestic appliance comprising an adsorption apparatus and a method for operating such a household appliance, in which a quick and easy change between different operating conditions is possible.

The object is achieved by a domestic appliance comprising an adsorption apparatus according to claim 1 and a method for operating such a household appliance according to claim 11.

Accordingly, the domestic appliance comprises an adsorption apparatus which contains an adsorption vessel containing a solid adsorbent and a heating device for heating the adsorbent, at least one phase transfer vessel with a connecting line connecting this with the adsorption vessel and a volatile adsorbent adsorbable reversibly by the adsorbent. For this purpose, the domestic appliance comprises a process air duct, in which the adsorption vessel is designed as a heat exchanger for heating a stream of air flowing in the process air duct and acting upon the adsorption vessel. The adsorption apparatus is configured to alternately and reversibly assume a first operating state in which the adsorption vessel is acted upon by an air stream flowing in the process air duct and in which at least one phase transfer vessel adsorbs vaporising adsorptive, and a second operating state in which the adsorbent is heated by the heater and desorbs the adsorptive, wherein desorbed adsorbent condenses in the phase transfer vessel. In this case, the adsorption apparatus according to the invention is set up such that the adsorption vessel is acted upon by an air stream flowing in the process air duct even in the second operating state.

The method for operating a domestic appliance comprising an adsorption apparatus which contains an adsorption vessel containing a solid adsorbent and a heater for heating the adsorbent, at least one phase transfer vessel with a connecting line connecting this with the adsorption vessel and a volatile, reversibly adsorbable adsorptive adsorbent, and comprising a process air duct, in which the adsorption vessel is designed as a first heat exchanger for heating an air stream flowing in the process air duct and acting on the adsorption vessel, wherein the adsorption apparatus alternatively and reversibly controls a first operating state in which the adsorption vessel is acted upon by an air stream flowing in the process air duct; adsorbing the at least one phase transfer vessel vaporizing adsorptive, and a second operating state in which the adsorbent from the heater is heated and the adsorptive desorbed, wherein desorbed adsorptive condenses in the phase transfer vessel, assumes, according to the invention is characterized in that the adsorption vessel is acted upon in the second operating state of a flowing air stream in the process air flow.

The invention utilizes that even in the second operating state continued loading of the adsorption vessel with the air flow components in the process air and in the adsorption vessel, which are not directly facing the adsorbent to be cooled, cools and keeps at a temperature lower than any temperature, which would be adjusted without this impingement, although it also limits the effectiveness of the heating necessary to effect the desorption of the adsorptive from the adsorbent. However, this means that the entry of heat into the adsorption vessel is limited to a level necessary for the heating of the adsorbent. If the adsorption vessel is therefore to change from the second to the first operating state and the adsorbent is brought to a temperature which makes the adsorption process possible, then this only requires cooling the adsorbent itself and those components which are directly facing it. The thermal inertia of the adsorption apparatus is thus markedly reduced.

In the domestic appliance, the at least one phase transfer vessel is preferably designed as at least one second heat exchanger for cooling down an air stream flowing in the process air guide in the first operating state. As a result, the application of the invention for a domestic appliance, in which a process air flow must be alternately heated and cooled, developed. In the process air guide, the at least one phase transfer vessel is particularly preferably connected downstream of the adsorption vessel. This has the additional advantage that in the second operating state, the process air which acts on the phase transfer vessel is heated by the condensing adsorptive before it acts on the adsorption vessel. As a result, the cooling effect of the process air at the adsorption vessel is sensibly limited and controlled.

A particularly preferred domestic appliance is designed for treating a product with an air stream flowing in the process air guide, the adsorption apparatus functioning as a device for recuperating heat within the air stream, in particular as a heat pump. This applies in particular to the first operating state in which the phase transfer vessel absorbs heat from the air stream due to the evaporating adsorptive and the adsorption vessel releases heat to the air stream due to the exothermic nature of the adsorption process. In such treatment, the adsorption apparatus repeatedly reverses the first and the second operating state, for which it is particularly suitable due to the inventively reduced thermal inertia of the adsorption vessel.

Particularly preferably, the domestic appliance is designed as a dryer for the goods, in particular as a tumble dryer.

In this case, the air stream flowing in the process air guide preferably leads moisture away from the material, and this removed moisture is at least partially condensed out in the at least one phase transition vessel designed as at least one second heat exchanger for cooling the air stream.

Preferably, the adsorption apparatus in the domestic appliance comprises a single phase transfer vessel in which the adsorptive is condensable and vaporizable, and a connecting line connecting the adsorption vessel to the phase transfer vessel. In this adsorption no moving parts need to be present. State transitions can be effected solely by heating the adsorbent to expel the adsorptive and by the adsorption process, which automatically starts in the absence of appropriate heating.

An alternative preferred embodiment of the domestic appliance is characterized in that the adsorption apparatus comprises a plurality of phase transfer vessels, including a condensation vessel in which the adsorptive is condensed and which is connected to the adsorption vessel via a first conduit closable by a first valve, and an evaporation vessel in which the adsorptive is vaporisable and is connected to the adsorption vessel via a second line which can be closed with a second valve, and also has a third line connecting the condensation vessel to the evaporation vessel. This embodiment does not have the advantage, if necessary to make do without moving parts in the adsorption; however, it makes it possible to adapt corresponding components of the adsorption apparatus more precisely to the required functions, in particular of evaporation or condensation.

It is particularly preferred to use a zeolite as adsorbent and water as adsorptive in the domestic appliance.

In addition, preferably, the process air guide is a single substantially closed circuit - as a circuit that can be operated without significant leakage of the air flow, but a pressure equalization with an environment of the process air is always given. In this embodiment, the corresponding domestic appliance, if it were set up in addition to the drying of laundry, would be referred to as a condensation dryer. In particular, for this purpose, it is furthermore preferred for the domestic appliance to have an additional condenser which can be flowed through by the air flow and is preferably arranged on the inflow side of the adsorption apparatus.

Hereinafter, a preferred embodiment of the invention will be described with reference to the drawings. Show in it Fig. 1 and Fig. 2 Embodiments of a domestic appliance, which is designed as a tumble dryer, each with an adsorption.

• Figur 1 zeigt ein Hausgerät 1, ausgestaltet als Wäschetrockner 1, umfassend einen Adsorptionsapparat 2. Der Adsorptionsapparat 2 umfasst ein als ersten Wärmetauscher ausgebildetes Adsorptionsgefäß 3, welches einen als Adsorbens nutzbaren Zeolithen in einer Menge von etwa 1 kg aufweist. Außerdem enthält der Adsorptionsapparat 2 ein flüchtiges und von dem Adsorbens adsorbierbares Adsorptiv, vorliegend Wasser, in einer Menge von etwa 1 kg. Davon abgesehen ist der Adsorptionsapparat 2 evakuiert; Luft oder Luftbestandteile sind allenfalls in Spuren vorhanden, soweit diese im Hinblick auf eine Benutzung über viele Jahre und allfällig mögliche und sinnvolle Dichtungsmaßnahmen im Adsorptionsapparat 2 unvermeidlich sind. Das Wasser liegt je nach Betriebszustand des Adsorptionsapparates 2 in flüssiger oder adsorbierter Form vor, neben der entsprechend der Temperatur im Adsorptionsapparat 2 vorhandenen gasförmigen Phase. Das Adsorptionsgefäß 3 hat eine Heizeinrichtung 4, durch welche es beheizbar ist, um vom Adsorbens adsorbiertes Wasser aus dem Adsorbens auszutreiben. Zur anforderungsgemäßen Aufnahme des Wassers ist ein als zweiter Wärmetauscher ausgebildetes einziges Phasenübergangsgefäß 5 vorgesehen, welches über eine einzige Verbindungsleitung 6 mit dem Adsorptionsgefäß 3 verbunden ist und einen Transport von Wasser zwischen diesen beiden Gefäßen 3 und 5 gestattet. Dieser Transport ist mittels eines in die einzige Verbindungsleitung 6 eingefügten einzigen Ventils 7 kontrollierbar - allerdings ist dieses Ventil 7 nicht in jedem Falle erforderlich, denn der Adsorptionsapparat 2 kann auch allein durch die in den Gefäßen 3 und 5 eingestellten Temperaturen kontrolliert werden.
• Figur 2 zeigt einen Wäschetrockner 1 mit einem Adsorptionsapparat 2, wobei in dem Adsorptionsapparat 2 an Stelle eines einzigen Phasenübergangsgefäßes 5 (vgl. Figur 1) ein Kondensationsgefäß 8 , an das Adsorptionsgefäß 3 angeschlossen über eine erste Verbindungsleitung 9 mit einem ersten Ventil 10, und ein Verdampfungsgefäß 11, an das Adsorptionsgefäß 3 angeschlossen über eine zweite Verbindungsleitung 12 mit einem ersten Ventil 13, und zusätzlich das Kondensationsgefäß 8 mit dem Verdampfungsgefäß 11 verbunden über eine dritte Verbindungsleitung 14, angeschlossen sind. Ein Zeolith in einer Menge von etwa 3 kg ist als Adsorbens vorgesehen, und Wasser in einer Menge von etwa 1 kg als Adsorptiv. Der Adsorptionsapparat 2 ist ebenso wie der Adsorptionsapparat 2 der Figur 1 evakuiert. Das Adsorptiv muss in diesem Adsorptionsapparat 2 einen Kreislauf zwischen allen drei Gefäßen 3, 8 und 11 durchlaufen, und dieser Kreislauf wird mit den Ventilen 10 und 13 gesteuert.

In the figures, each of which is to be understood as a schematic diagram, corresponding components each carry the same reference sign.

• FIG. 1 shows a domestic appliance 1, designed as a clothes dryer 1, comprising an adsorption apparatus 2. The adsorption apparatus 2 comprises a designed as a first heat exchanger adsorption vessel 3, which has a useful as adsorbent zeolites in an amount of about 1 kg. In addition, the adsorption apparatus 2 contains a volatile adsorptive adsorbable by the adsorbent, in this case water, in an amount of about 1 kg. Apart from that, the adsorption apparatus 2 is evacuated; Air or air components are at best in traces, as far as they are unavoidable in view of use for many years and possibly possible and useful sealing measures in the adsorption apparatus 2. Depending on the operating state of the adsorption apparatus 2, the water is present in liquid or adsorbed form, in addition to the gaseous phase corresponding to the temperature in the adsorption apparatus 2. The adsorption vessel 3 has a heating device 4, by means of which it can be heated in order to drive off water adsorbed by the adsorbent from the adsorbent. For receiving according to the requirements of the water designed as a second heat exchanger single phase transfer vessel 5 is provided, which is connected via a single connecting line 6 to the adsorption vessel 3 and a transport of water between these two vessels 3 and 5 permits. This transport is controllable by means of a single valve 7 inserted in the single connection line 6 - but this valve 7 is not required in every case, because the adsorption apparatus 2 can also be controlled solely by the temperatures set in the vessels 3 and 5.
• FIG. 2 shows a clothes dryer 1 with an adsorption apparatus 2, wherein in the adsorption apparatus 2 instead of a single phase transfer vessel 5 (see. FIG. 1 ) a condensation vessel 8, connected to the adsorption vessel 3 via a first connecting line 9 with a first valve 10, and an evaporation vessel 11, connected to the adsorption vessel 3 via a second connecting line 12 with a first valve 13, and in addition the condensation vessel 8 connected to the evaporation vessel 11 via a third connecting line 14, are connected. A zeolite in an amount of about 3 kg is provided as an adsorbent, and water in an amount of about 1 kg as an adsorbent. The adsorption apparatus 2 as well as the adsorption apparatus 2 is the FIG. 1 evacuated. The adsorptive must cycle in this adsorption apparatus 2 between all three vessels 3, 8 and 11, and this cycle is controlled with the valves 10 and 13.

To explain the integration of the adsorption apparatus 2 in the tumble dryer 1, reference will now be made to both figures together.

The tumble dryer 1 contains a process air guide 15 for guiding an air flow 15 in a circuit 15, wherein it is driven by a fan 16. The air flow 15 passes at a temperature between 80 ° C and 90 ° C in the treatment chamber 17, namely a rotatable drum 17, with a material to be dried 18, namely laundry 18. In the drum 17, the air flow 15 of the laundry 18 moisture , and is loaded with such moisture out of the drum 17 out. He then passes to a condenser 19, where heat is removed from it, so that it cools and condenses out of the drum 17 entrained moisture. Thus resulting condensate is separated by means not shown from the air stream 15 and discharged. Behind the condenser, the air flow 15 passes into the adsorption apparatus 2, where it flows through the vessels 5 and 3 or 8, 11 and 3 designed as heat exchangers. In these vessels, depending on the operating state of the adsorption apparatus 2, heat is first withdrawn from it (first operating state) and then heat is supplied, or only heat is supplied (second operating state). In accordance with the heated state, he then returns via the blower 16 back into the drum 17th

If the tumble dryer 1 according to FIG. 1 or FIG. 2 is in a dormant state, the adsorptive is adsorbed as much as possible of the adsorbent. In this case, the adsorption apparatus 2 is in a state characterized by a particularly high stability. If the tumble dryer 1 is shifted from the idle state into the corresponding nomenclature according to the second operating state, then the drum 17 is rotated and the air flow 15 is built up by the blower 16, and furthermore the condenser 19, possibly with a time delay, is put into operation - for example through the Construction of a cooling air flow 20. In the adsorption apparatus 2, the heating device 4 is switched on in the adsorption vessel 3 and the adsorbent heated to a temperature up to about 250 ° C. Thereby, a desorption process is initiated, in which the adsorptive is expelled from the adsorbent; It flows as a vapor to the phase transfer vessel 5 and condensation vessel 8, controlled by the valve 7 and the valves 10 and 13. In the phase transfer vessel 5 and condensation vessel 8, the steam is heat to the air stream 15 and condensed at a temperature in a largely stationary state is about 70 ° C. The air stream 15 passes after this first heating at a temperature of about 65 ° C to the adsorption vessel 3, where it receives more heat and finally reaches the drum 17 at a temperature of about 90 ° C. There it absorbs moisture and reaches the condenser 19, where it is freed of this moisture and cooled to a temperature which is about 60 ° C when a largely stationary state is reached.

To let the air flow 15 absorb heat in the second operating state at the adsorption vessel 3 initially appears to be counterproductive since heat is removed from the heating device 4 which would otherwise be available for heating the zeolite in the adsorption vessel 3. However, this is not a disadvantage since the air stream 15 otherwise would have to be heated to maintain the drying process, and since parts of the adsorption vessel 3 and the process air guide 15 remain in this way at a relatively low temperature. As a result, the adsorbent after completion of the desorption can be cooled faster to a temperature permitting the adsorption process, and in particular a multiple or even multiple reversing between the first and the second operating state of the adsorption apparatus 2 is possible. In addition, in the present case, the heater 4 may be the only means for heating the air flow.

The desorption process is time-controlled, temperature-controlled or pressure-controlled by switching off the heating device 4, and with continued drying of the laundry 18 in the drum 17, the adsorption apparatus 2 passes into another, the first operating state according to the above nomenclature. In this case, the adsorbent cools due to the removal of heat from the adsorption vessel 3 through the air flow 15 and is prepared with decreasing temperature for re-adsorbing the adsorptive. Since the adsorption is exothermic, there is a heating effect; the adsorption vessel. 3 flowing air stream 15 is heated, in turn, in a largely stationary state, a temperature of 90 ° C is reached.

In the tumble dryer according to FIG. 1 For example, the adsorbate may in principle go back to the adsorbent without control by the single valve 7, but a controlling intervention may be necessary for any delay desired. In any case, with the onset of adsorption, the adsorptive accumulated in the phase transfer vessel 5 in liquid form at a temperature of about 50 ° C for evaporation by absorbing heat, which is withdrawn from the air flow 15 in the phase transfer vessel 5. Thus, 15 more moisture condenses out of the air stream, and it is also cooled further. When a substantially stationary state is reached, the air stream 15 enters the vessel 5 at a temperature of about 60 ° C. and leaves it at a temperature of about 57 ° C. In this state, the adsorption apparatus 2 operates as a heat pump and can recuperate with a thermal pump power to 1200 W heat. The adsorption process ends when all the adsorptive is bound to the adsorbent or the adsorbent has absorbed a maximum possible amount of the adsorptive. Then, initiated by a timing or by a detection of a falling temperature or a decreasing pressure in the adsorption vessel 3, a desorption process is again initiated as described above.

In this way, laundry 18 can be changed several times between desorption and adsorption processes for drying a post, but the process of drying ends with an adsorption process. Thereby, the adsorptive is as far as possible bound to the adsorbent to shut down the clothes dryer 1, whereby the adsorption apparatus 2 is placed in a state of rest of indefinite length as low as possible, because particularly stable state.

The modes of operation of the tumble dryer 1 and the adsorption apparatus 2 according to FIG. 2 correspond largely to the FIG. 1 described. Only the condensation of the adsorptive takes place in a special condensation vessel 8, which is separated from an evaporation vessel 11, in which the evaporation of the adsorptive takes place. Via the third connecting line 14, the liquid adsorptive passes from the condensation vessel 8 to the evaporation vessel 11. Condensation and evaporation of the adsorptive can take place at very different temperatures - condensation at a temperature up to 80 ° C while heating the air flow from 57 ° C to 70 ° C, evaporation at a temperature of about 20 ° C while cooling the air flow from 60 ° C to 57 ° C - and each of the vessels 8 and 11 can appropriate temperature conditions and differences can be adjusted. It should be understood that controlling interventions by means of valves 10 and 13 are required to establish and maintain the adsorptive cycle.

The control of the clothes dryer 1 and the adsorption apparatus 2 takes place in each embodiment by means of a control unit 21, with all controllable components 7 and 10 and 13 and 16 and according to necessity with each other component, not shown (for example, cooling air flow 20 or sensor) via Control lines 22 is connected. For clarity, a single control line 22, which ends at the adsorption apparatus 2, drawn; it is to be understood as a symbol for any control line 22 to a component in the adsorption apparatus 2.

LIST OF REFERENCE NUMBERS

1

Domestic appliance, tumble dryer

2

adsorption apparatus

3

adsorption

4

heater

5

Phase transition vessel

6

Only connection line

7

Only valve

8th

condensation vessel

9

First connection line

10

First valve

11

Evaporation vessel

12

Second connection line

13

Second valve

14

Third connection line

15

Process air routing, air flow

16

fan

17

Treatment chamber, drum

18

Good, wash

19

capacitor

20

Cooling air flow

21

control unit

22

control line

Claims (14)

1. Domestic appliance (1) for handling articles (18) with an air stream, comprising an absorption unit (2) containing an adsorption container (3) containing a solid adsorption agent as well as a heater (4) for heating up the absorption agent, at least one phase transition device (5, 8, 11) with a connecting line (6, 9, 12) connecting this to the adsorption container (3) and containing a volatile adsorptive reversibly adsorbable by the absorption agent, and comprising a process air conduit (15), in which the adsorption container (3) is embodied as a first heat exchanger for heating up a stream of air flowing in the process air conduit (15) and being applied to the absorption container (3), wherein the adsorption unit (2) is configured to alternately and reversibly assume a first operating state in which a stream of air flowing in the process air conduit (15) is applied to the adsorption container (3) and to adsorb the adsorptive evaporating in the at least one phase transition container (5, 8, 11) and a second operating state in which the absorption agent is heated up by the heater (4) and the adsorptive is desorbed, wherein desorbed adsorptive condenses in the phase transition vessel (5, 8, 11), wherein the adsorption unit (2) is configured such that in the second operating state as well the adsorption container (3) also has a stream of air flowing in the process air conduit (15) applied to it, characterised in that the adsorption unit (2) is configured so as to reversibly assume the first and the second operating state a number of times during the handling.
2. Domestic appliance (1) according to claim 1, in which the at least one phase transition container (5, 8, 11) is embodied as at least one second heat exchanger (5, 8, 11) for cooling down the stream of air flowing in the process air conduit (15) in the first operating state.
3. Domestic appliance (1) according to one of the preceding claims in which the adsorption unit (2) is a device (2), especially a heat pump (2), for recovering heat within the stream of air.
4. Domestic appliance (1) according to claim 3, which is embodied as a dryer for the articles (18), especially as a tumble dryer (1).
5. Domestic appliance (1) according to one of the preceding claims, in which the adsorption unit (2) features a single phase transition container (5), in which the adsorptive is able to be condensed and evaporated, as well as a single connecting line (6) connecting the adsorption container (3) to the phase transition container (5).
6. Domestic appliance (1) according to one of the claims 1 to 4, in which the adsorption unit (2) features a number of phase transition containers (8, 11) comprising a condensation container (8), in which the adsorptive is able to be condensed and which is connected to the adsorption container (3) via a first connecting line (9) able to be closed off with a first valve (10) and an evaporation container (11), in which the adsorptive is evaporated and which is connected to the adsorption container (3) via a second connecting line (12) able to be closed off with a second valve (13) as well as a third connecting line connecting the condensation container (8) to the evaporation container (11).
7. Domestic appliance (1) according to one of the preceding claims, in which the adsorbing agent is a zeolith and the adsorptive is water.
8. Domestic appliance (1) according to one of the preceding claims, in which the process air conduit (15) is essentially a closed circuit.
9. Domestic appliance (1) according to claim 8, of which the process air conduit (15) features an additional condenser (19) for condensing out moisture from the air stream.
10. Domestic appliance (1) according to claim 9, in which the condenser (19) is arranged on the upstream side of the adsorption unit (2).
11. Method for handling articles (18) with a stream of air in a domestic appliance (1) comprising an adsorption unit (2), which contains an adsorption container (3) containing a solid adsorbing agent as well as a heater (4) for heating up the adsorbing agent, at least one phase transition container (5, 8,11) with a connecting line (6, 9, 12) connecting this to the adsorption container (3) and a volatile adsorptive able to be reversibly adsorbed by the adsorbing agent, and comprising a process air conduit (15), in which the adsorption container (3) is embodied as a first heat exchanger (3) for heating up a stream of air flowing in the process air conduit (15) being applied to the adsorption container (3), wherein the adsorption unit (2) is configured for alternate and reversible assumption of a first operating state in which a stream of air flowing in the process air conduit (15) is applied to the adsorption container (3) and which adsorbs adsorptive evaporating in the at least one phase transition container (5, 8, 11), and of a second operating state in which the adsorbing agent is heated up by the heater (4) and the adsorptive is desorbed, wherein desorbed adsorptive condenses in the phase transition container (5, 8, 11), wherein a stream of air flowing in the process air conduit (15) is also applied to the adsorption container (3) in the second operating state, characterised in that the adsorption unit (2) reversibly assumes the first and the second operating state a number of times during the handling.
12. Method according to claim 11, in which the adsorption unit (2) recovers heat in the second operating state within the stream of air flowing in the process air conduit (15).
13. Method according to one of the claims 11 and 12, in which the handling is drying of the articles (18).
14. Method according to claim 13, in which the stream of air flowing in the process air conduit (15) removes moisture from the articles (18), and in which the removed moisture condenses out at least partly in the at least one phase transition container (5, 8, 11) embodied as at least one second heat exchanger (5, 8, 11) for cooling down a stream of air flowing in the process air conduit (15).

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