DE102023100120A1 - Laundry treatment device with fan - Google Patents

Abstract

The invention relates to a laundry treatment appliance (1) with the following features:- a housing (2);- a cylindrical tub (4);- a cylindrical drum (3) which is rotatably mounted in the tub (4) with a horizontal or inclined axis (33) and is designed to hold laundry;- a fan module (13) which is mounted in the housing (2) above the tub (4),- a fan (9) for conveying process air (PL) through the duct section (8).- a filter element (100) which is provided in the duct section (8a) or in the second pipe (96), preferably in the region of the duct inlet.The appliance (1) comprises a control device (90) which is set up to activate the fan (9) for a first predetermined duration at the start of a treatment program during a ventilation phase (L), before the inlet device (42) is activated.

Description

• - ein Gehäuse;
• - einen zylinderförmigen Laugenbehälter;
• - eine im Laugenbehälter mit einer horizontalen oder geneigten Achse drehbar gelagerten, zylinderförmigen Trommel, die zum Aufnehmen von Wäsche ausgebildet ist;
• - wobei die Trommel in ihrer stirnseitigen Rückwand Öffnungen oder Perforationen, aufweist, um einen Luftstrom aus dem Laugenbehälter durch die Trommel zu ermöglichen;
• - wobei der Laugenbehälter einen Lufteinlass und einen Luftauslass aufweist;
• - eine Zulaufvorrichtung zum Einlassen von Waschflüssigkeit in den Laugenbehälter;
• - eine Ablassvorrichtung zum Ablassen der Waschflüssigkeit aus dem Laugenbehälter;
• - ein Prozessluftmodul, welches im Gehäuse oberhalb des Laugenbehälters angebracht ist, mit
• - einem Modulgehäuse, umfassend einen Kanalabschnitt,
• - einem Lüfter zum Fördern von Prozessluft durch den Kanalabschnitt;
• - einem ersten Rohr zur Verbindung des Kanalabschnitts mit dem Lufteinlass des Laugenbehälters und einem zweiten Rohr zur Verbindung des Kanalabschnitts mit dem Luftauslass des Laugenbehälters und einem Filterelement, welches in dem Kanalabschnitt oder im zweiten Rohr angeordnet ist;
• - eine Steuereinrichtung, die dazu eingerichtet und programmiert ist, die Aktoren, also den Motor zum Drehantrieb der Trommel, die Zulaufvorrichtung und die Ablassvorrichtung zu aktivieren und zu deaktivieren, um ein Behandlungsprogramm durchzuführen.

The invention relates to a laundry treatment appliance with the following features:

• - a housing;
• - a cylindrical suds container;
• - a cylindrical drum which is rotatably mounted in the tub with a horizontal or inclined axis and is designed to hold laundry;
• - wherein the drum has openings or perforations in its front rear wall to allow air to flow from the tub through the drum;
• - wherein the tub has an air inlet and an air outlet;
• - an inlet device for letting washing liquid into the tub;
• - a drain device for draining the washing liquid from the tub;
• - a process air module, which is mounted in the housing above the lye container, with
• - a module housing comprising a channel section,
• - a fan for conveying process air through the duct section;
• - a first pipe for connecting the channel section to the air inlet of the lye container and a second pipe for connecting the channel section to the air outlet of the lye container and a filter element which is arranged in the channel section or in the second pipe;
• - a control device which is arranged and programmed to activate and deactivate the actuators, i.e. the motor for rotating the drum, the inlet device and the outlet device, in order to carry out a treatment program.

The EN 10 2019 219 054 B3 discloses a laundry treatment device for carrying out washing programs using washing liquid. The used or dirty washing liquid is passed through a filter system which separates microplastics or fabric particles detached from the laundry or removes them from the wastewater.

The EP 3 190 224 A1 discloses a washer-dryer with a heat pump module for generating the drying air. The heat pump module is located above the tub and comprises a fan for generating a process air flow that flows through the drum to dry the laundry items in the drum.

The invention is based on the object of improving a compact laundry treatment machine with a suds container and process air generator with regard to the waste water quality.

According to the invention, this object is achieved, among other things, by a laundry treatment appliance having the features of claim 1. Advantageous embodiments and further developments of the invention emerge from the dependent claims.

The approach presented here creates a compact laundry treatment device in a simple manner, which is equipped with a process air generator for generating the process air. In addition to the components for washing, a process air generator is housed in a so-called standard housing. This is achieved by placing the process air module in the free space above and to the side of the suds container. The channel section is designed as a flat, wide box, in which the heat exchangers are preferably housed in suitable dimensions. Furthermore, the air inlet in the suds container is preferably located in the rear end wall in the lower area, and the air outlet in or on the suds container is located in the front, middle upper area of the front end wall. The air outlet can also be incorporated into a bellows, which forms a tubular connecting channel from the loading opening in the front wall to the front loading opening in the drum or the suds container. The bellows can therefore be assigned to the suds container with regard to the process air flow. The flat box that forms the duct section is located between the air inlet and the air outlet and is aligned approximately horizontally, i.e. the wide sides are horizontal and the narrow sides are aligned approximately vertically. Overall, all position and direction information refers to the correct operating position of the device.

Furthermore, the process air module or the supply pipe comprises a filter element which is provided in the channel section in the flow direction in front of the box-shaped channel section or in the channel section. The filter element is removably placed in the front part of said channel section. The filter element serves to remove fluff from the process air before it reaches the channel section with the heat exchangers preferably located therein. So that the filter element or the filter medium of the filter element can be cleaned, it is removably placed in the channel section or in the pipe section in front of the channel section, out removably positioned or arranged. The filter element can be removed from the duct section or the pipe through a housing opening and can be inserted or accessed. The filter medium introduced into the filter element, for example a fleece mat, gauze or sieve, can then be freed of lint or adhesions. The control device is set up or programmed in such a way that the process air generator or fan is activated when a laundry treatment program starts, before water is let into the tub or before the laundry is wetted or moistened. The fan is activated for a predetermined initial period so that the laundry that has not yet been washed and is dry is exposed to an air stream. This loosens lint from the fabric of the laundry items and transports it to the duct. The filter element placed in front of the said duct section separates the lint and particles present in the process air stream so that the laundry items release fewer lint and microparticles into the wash water during the subsequent wet wash cycle. This reduces the load of microparticles in the wastewater or, at best, avoids it. Preferably, the filter element is designed or dimensioned to separate microparticles.

In a practical embodiment, the control device is designed to activate the motor for rotating the drum for a second predetermined period at the start of a treatment program and while the fan is activated in order to rotate the drum at a speed lower than the loading speed. This causes the laundry items to be knocked over inside the drum and kept suspended at least temporarily. This means that they are completely or almost completely exposed to process air, which achieves reliable removal of loose fluff and particles as well as microparticles.

In an overall expedient embodiment, the first predetermined duration and the second predetermined duration have a value in the range of 30 seconds to 5 minutes, preferably 1 to 3 minutes, with the second predetermined duration preferably being equal to or shorter than the first duration. On the one hand, these activation times are sufficient to remove a large proportion of particles from the laundry items before they are washed with washing liquid. On the other hand, the duration is so long that the entire washing program is significantly extended.

• - einer in dem Kanalabschnitt angeordnete Wärmetauscheranordnung mit einem Verflüssiger als Heizeinrichtung und Verdampfer als Kondensationseinrichtung und
• - einem Kompressor mit Verbindungsleitungen zur Wärmetauscheranordnung, wobei die Steuereinrichtung dazu eingerichtet ist, den Kompressor zu aktivieren und zu deaktivieren, um die Wärmepumpenvorrichtung für den Trockungsablauf zu betreiben. Der ohnehin vorhandene Lüfter wird hierbei sowohl zum Erzeugen des Prozessluftstromes für die Trocknungsphase als auch für das Lüften zum Flusenentfernen aus den Textilien.

Preferably, the laundry treatment appliance is designed as a washer-dryer, wherein the process air module comprises a heat pump device, with

• - a heat exchanger arrangement arranged in the channel section with a condenser as a heating device and an evaporator as a condensing device and
• - a compressor with connecting lines to the heat exchanger arrangement, wherein the control device is designed to activate and deactivate the compressor in order to operate the heat pump device for the drying process. The fan, which is already present, is used both to generate the process air flow for the drying phase and for ventilation to remove lint from the textiles.

The control device can be designed to leave the heat pump device or the compressor switched off or to switch it off during the ventilation phase so that only an air flow is generated without conditioning the process air.

Alternatively, the control device can be designed to switch on or activate the heat pump device or the compressor during the ventilation phase so that the process air is conditioned. In particular, the process air can be warmed or heated. This makes some textile fibers more supple, so that when the laundry items are moved at the same time, particles are better detached.

• - den Antriebsmotor zu aktivieren und zu inaktivieren, um die Trommel während des Behandlungsprogramms mit Waschflüssigkeit zu bewegen und um die Wäsche während der Nassbehandlung für eine vorbestimmte Dauer zu bewegen;
• - Aktivieren der Ablassvorrichtung zum der aufgebrauchten oder schmutzigen Waschflüssigkeit aus der Trommel bzw. dem Laugenbehälter zu entfernen, nach dem Ablauf der vorbestimmten Zeit der Nassbehandlung;
• - Aktivieren des Antriebsmotors für eine vorbestimmte Dauer, um die Trommel mit einer Drehzahl oberhalb der Anlegedrehzahl zur Durchführung einer Schleuderphase zu drehen. Hierbei wird vor der Nassbehandlung die oben genannte Lüftungsphase aktiviert, wobei während der Nassbehandlung oder Waschphase mit Waschflüssigkeit der Lüfter inaktiv bzw. abgeschaltet ist. Während der Waschphase werden weniger Flusen, Partikel und/oder Mikropartikel aus den Textilien herausgelöst, weil ein großer Anteil an Flusen, Partikeln und/oder Mikropartikeln bereits vorab während der Lüftungsphase herausgelöst und in das Filterelement für die Prozessluft gelangt sind. Die Partikellast im Abwasser wird insgesamt stark verringert.

In an overall practical embodiment, the control device is further designed to

• - to activate and deactivate the drive motor to move the drum during the washing liquid treatment programme and to move the laundry during the wet treatment for a predetermined duration;
• - Activating the drain device to remove used or dirty washing liquid from the drum or tub after the predetermined wet treatment time has elapsed;
• - Activating the drive motor for a predetermined period to rotate the drum at a speed above the starting speed to carry out a spin phase. In this case, the above-mentioned ventilation phase is activated before the wet treatment, whereby the fan is inactive or switched off during the wet treatment or washing phase with washing liquid. During the washing phase, fewer fluff, particles and/or microparticles are released from the textiles because a large proportion of fluff, particles and/or Microparticles have already been released during the ventilation phase and have entered the filter element for the process air. The overall particle load in the wastewater is greatly reduced.

In a further, practical embodiment of the device with heat pump device, the control device is designed to activate the fan, preferably also the heat pump device or the compressor after the spin phase has ended. This provides a continuous treatment sequence of lint removal, washing with washing liquid and subsequent drying.

In a practical embodiment, the housing comprises a housing cover on the top, which has a closable opening for access to the filter element. The filter element can be removed from the closable opening in the cover.

In a practical embodiment of the laundry treatment appliance as a washer-dryer, it comprises a detergent dispenser drawer with a handle plate which is designed as a partial area of the panel when the detergent dispenser drawer is pushed in, wherein the access opening for the filter element or the cover plate of the filter element is arranged to the side of the handle plate for the detergent dispenser drawer.

In an overall advantageous design or development, the air inlet is arranged below the height of the drum's axis of rotation. The air inlet is therefore arranged in the rear front wall in the lower area, which ensures a good and straight air flow through the inlet to the drum and through the drum if the rear wall of the drum is designed with holes or as a grid in some areas. The air is not diverted within the tub.

The air outlet is located in the front, upper area of the front bulkhead, which ensures that the process air flows diagonally through the drum from the back to the front. The outlet is not reached by the laundry items moving in the drum and cannot be blocked by them because they always move downwards, i.e. away from the outlet, due to gravity. This ensures that the flow of the process air is not obstructed.

Overall, it is advisable to arrange the box-shaped duct section in such a way that the central axis of the duct section flows into the fan from the center of the air outlet. This keeps the deflection of the process air in the duct section from the inlet opening to the outlet opening to the fan to a minimum, so that there is little or no flow resistance. Furthermore, the path of the process air duct is kept short, so that heat losses are also kept to a minimum.

In an overall advantageous design, the base element outside the duct section includes holding means for positioning or holding the compressor. This creates a compact ventilation module or heat pump module that contains all the components of the closed refrigerant circuit. This can be inserted into the device housing as a pre-assembled unit, so that only the connections for the process air supply and electrical connections need to be created.

The fan is preferably arranged between the rear and the back wall of the housing because the installation space is particularly suitable for this. In the front area, the installation space is cramped because the front loading opening takes up a large proportion of the space between the front end wall and the front wall of the housing. The fan is preferably designed as a radial fan and comprises a flow housing with a fan wheel adapted therein. The flow housing has a diameter that corresponds to at least 4 times the axial extension of the fan, wherein the flow housing is located in an extension perpendicular to the axial extension partially between the rear end wall of the lye container and the housing rear wall. In other words, the fan is arranged in the rear area of the device housing in such a way that at least part of the flat flow housing is located between the rear end wall of the lye container and the inside of the housing rear wall. The flow housing can preferably be designed with a diameter that is more than 6 times or 8 times the axial extension. The fan wheel is designed to match the geometry of the flow housing. The axial extension is the length of the flow housing, excluding the drive motor on the shaft.

In an overall advantageous embodiment, the laundry treatment device further comprises a separating means for separating particles, in particular microparticles, from the waste water, wherein the separating device is arranged in the drain device or downstream of the drain device. In particular, the separating means is designed to filter or separate microparticles, for example microplastics.

The laundry treatment appliance is preferably a washer-dryer, with the housing being 55 cm to 65 cm wide, 55 to 70 cm deep and 85 to 95 cm high. The heat pump module as defined in the examples given above is particularly suitable for the washer-dryer. The housing dimensions already known on the market do not have to be changed in order to provide such a washer-dryer. In particular, the appliance does not have to be designed to be higher than a comparable washer-dryer without a heat pump module arranged above the tub.

• 1: eine schematische Darstellung des Wäschebehandlungsgeräts mit Wärmepumpe;
• 2: das Wäschebehandlungsgerät in einer perspektivischen Frontansicht;
• 3: Teile der Aggregate des Wäschebehandlungsgerätes in einer perspektivischen Ansicht;
• 4 und 5: das Wäschebehandlungsgerät in einer perspektivischen Frontansicht in verschiedenen Ausführungen und
• 6: ein beispielhafter Programmablauf in einem skizzierten Diagramm.

An embodiment of the invention is shown partly schematically in the drawings and is described in more detail below.

• 1 : a schematic representation of the heat pump laundry treatment appliance;
• 2 : the laundry treatment appliance in a perspective front view;
• 3 : Parts of the units of the laundry treatment appliance in a perspective view;
• 4 and 5 : the laundry treatment device in a perspective front view in different versions and
• 6 : an example program flow in a sketched diagram.

1 shows the laundry treatment device 1 according to the invention in a schematic sectional view. The device 1 is a washer-dryer 1 with a housing 2 and the units arranged therein for carrying out treatment programs. Here, the unit with the suds container 4 and the drum 3 rotatably mounted therein can be seen. The interior of the drum 3 can be reached for loading and unloading through the tubular bellows 6 attached to the front. The bellows 6 seals the suds container 4 from the door 5 located on the front wall. An inlet line 41 and an inlet valve 42 are provided for guiding the washing water in order to supply water to the suds container 4 or the drum 3 during a washing phase. The water is guided to the detergent dispenser 43 by means of the inlet line 41 in order to guide detergent stored there into the suds container 4 with the water flowing through the box. The detergent dispenser 43 is connected to the tub 4 by means of the inlet pipe 44. The drain device 60 comprises a pump 61 and a drain line 62, wherein the pump 61 is activated as required when this is provided in the course of an automatic washing process. The drain device 60 can preferably contain a separator 63 which is designed to separate lint, particles and in particular microparticles. The control device 90 is set up and programmed to activate and deactivate the actuators, i.e. the motor 70 for rotating the drum, the inlet valve 42 and the pump 61, in order to carry out a treatment program.

The washer-dryer 1 further comprises a heat pump module 13, which is mounted in the housing 2 above the tub 4 and serves to generate a process air flow PL. The module 13 comprises a refrigerant circuit in which refrigerant is circulated in a line system with an evaporator 15, a compressor 14 ( 2 ) for compressing the refrigerant, a condenser 16 and a throttle (not shown), the heat exchanger containing the evaporator 15 and the heater containing the condenser 16 of the heat pump 13. The module 13 comprises a housing 17 ( 2 ), in which a channel section 8 is incorporated and in which the evaporator 15 and the condenser 16 are mounted. The evaporator 15 and the condenser 16 are arranged in the channel section 8 such that the moist process air PL is led from the outlet 47 of the suds container 4 through the pipe 96 to the channel 8 and in the channel 8 first flows through the evaporator 15 so that it is dehumidified due to the cooling and the resulting condensation. It then flows through the downstream condenser 16, which acts as a heater and heats up the process air PL so that the heated process air PL is let through the air inlet 46 into the suds container 4 and through openings 32 in the drum rear wall 31 into the drum 3 and is thus fed to the textiles 10 to be treated. Any condensate that accumulates is collected in the collecting tray 81 and guided to the drain 60, 62 via the condensate line 82. The outlet 47 of the lye container 4 is preferably arranged in the area of the loading opening on the front end wall of the lye container 4 or in the tunnel-like passage area of the loading opening. The outlet 47, which forms the inlet to the heat pump module 13, is connected to the heat pump unit 13, in particular to the channel section 8, via the line 96.

The functional module 13 mounted above the lye container 4 further comprises the fan 9, which is driven by the motor 91. The fan 9 comprises a flow housing 93, inside of which the fan wheel 92 is located. The housing 93 is flat and has a diameter that is at least 4 times larger than the axial length. The fan 9 is placed above the lye container 4 in the device housing 2 in such a way that part of the fan housing 93 extends in the gap between the lye container rear wall 48 and the housing rear wall 21. The fan can preferably be designed as a radial fan, preferably with curved blades, so that it causes a higher volume flow in a preferred direction than in the opposite direction.

Overall, all direction and position information refers to the normal operating position of the treatment device 1.

2 shows the washer-dryer 1 with the housing 2 partially open. The front wall 22 includes the loading opening, which is closed by the door 23. The suds container 4 is suspended or supported in the interior of the housing 2 so that it can swing. Inside the suds container 4, the drum 3 (shown in dashed lines) is rotatably mounted on a horizontal axis 33. The unit 13 for generating the process air PL is arranged above the suds container 4 and completely inside the housing 2. The unit 13 is attached to the housing 2 so that it does not swing with the suds container 4 when the latter swings due to imbalance in the rotating drum 3. The unit 13 includes a housing 17, which serves to position and preferably fix the compressor 14, the heat exchangers 15, 16, the lines 18 and the throttle 18a. In the situation shown, the housing 17 is closed and in normal operating condition. The housing 17 comprises the channel section 8 in approximately the middle area, in which the heat exchangers 15, 16 are accommodated. The channel section 8 is provided downstream with the box-shaped deflection pipe 83 in order to deflect the lateral process air flow in the direction of the fan 9. The fan 9 is connected to the circular outlet 83b of the deflection pipe 83 and is located behind the housing 17 of the unit 13. It can be seen that the flat fan outlet 94 points downwards and is connected to the rear air line 95, which in turn opens into the air inlet 46 in or on the lye container 4. The blower housing 93 extends at least with the lower region and the outlet 94 in the space between the rear end wall 48 of the suds container 4 and the rear wall 21 of the appliance housing 2. In the situation shown, the front loading opening is closed by means of the door 5.

3 shows the washer-dryer 1 in a partially assembled state. Here, the unit with tub 4 and drum 3 and the module housing 17 with fan 9 arranged above it can be seen. The feed pipe 96 is open on the inlet side and is arranged in the upper area of the bellows 6. The pipe 96 opens into the channel section 8b of the housing 17. In the channel section 8b, which is located in front of the heat exchanger 15 ( 4 ), the lint filter 100 or the filter screen 101 is arranged to guide the process air PL free of lint to the heat exchangers 15, 16. The filter screen 101 is designed as a V-shaped pocket in order to make the active filter surface larger than the cross section of the channel section 8b. The filter screen 101 can also be a fabric mat or a fleece mat, also designed in multiple layers. The filter screen 101 is preferably designed to separate microparticles. The channel section 8 is shown here without the heat exchangers 15, 16. The plane of the opening 106 in the channel section 8b is essentially parallel or exactly parallel to the plane of the panel 24 or front wall 22. The air outlet 47 is arranged in the bellows 6. The connecting pipe 96 is attached between the outlet opening 47 and the inlet opening on or in the channel section 8. The bellows 6 forms the tubular connection between the loading opening on the housing side and the front access opening of the suds container 4.

4 shows the device 1 in a perspective overall view with housing 2 in the design with an access opening 107 in the housing cover 23. The access opening 107 is closed with the cover 102. In the example, the cover 102 is part of the filter element 100 and is designed with it as a single structural unit. The front wall 22 with the door 5 pivotably mounted on it can also be seen. The panel 24 is attached to the front wall in the upper area. The panel can, for example, contain operating elements and a shaft opening for the detergent dispenser drawer 43 ( 1 ) may include.

5 shows the device 1 in a perspective overall view with housing 2 in the design with an access opening 107 in the front wall 22 or panel 24. The access opening 107 is closed with the cover 103. In the example, the cover 103 is part of the filter element 100 and is designed with it as a single structural unit with the filter medium 101. The cover 103 is preferably located in the plane of the panel 24 when the drawer 100 is pushed in. The filter medium 101 can be designed as a fine-mesh sieve or gauze or as already described above. The front wall 22 with the door 5 pivotably mounted on it can also be seen. The panel 24 arranged in the upper area of the front wall 22 can extend over the entire width of the device 1. The panel 24 can, for example, contain operating elements and a shaft opening for the detergent dispenser drawer 43 ( 1 ). In the example shown in accordance with 5 the filter element 100 is designed as a drawer, whereby the filter medium 101 can be introduced through the pipe opening 106 into the channel section 8b or is located in the channel section 8b in the normal operating situation. A sealing means 105 is arranged around the

Opening 106 surrounding edge to seal the opening 106, when the filter element 100 is in the inserted and proper operating position.

All directions and position information refer to the correct operating position of the laundry treatment appliance 1.

6 shows the procedure for a treatment program P as a diagram. 1 reference is made to the components outlined. At the start time t=0, the fan 9 or the fan motor 91 is activated to generate an air flow through the drum 3. In this ventilation phase V, the drum 3 is preferably also rotated at a speed below the loading speed so that the laundry falls.

At time t=1, the actually desired washing phase W begins. The fan 9, 91 is switched off and the inlet valve 42 is activated to let water into the tub 4 or the drum 3 for washing. The drum 3 is rotated in reverse to move the laundry in the washing liquid. After the end of the washing phase W or at the end of the washing phase W, the used or dirty washing liquid is drained from the tub 4 by means of an activated drain device 60, 61. At time t=2, the drive motor 70 is activated to rotate the drum 3 at an increased speed and thereby spin the laundry and expel washing liquid from the laundry. Laundry treatment by means of wet washing is thus completed at time t=3.

If necessary, a drying phase D can be activated automatically if this has been communicated to the control device 90 in advance. At time t=4, the entire treatment program consisting of washing and drying is completed.

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• DE 102019219054 B3 [0002]
• EP 3190224 A1 [0003]

Claims (13)

Laundry treatment appliance (1) with the following features: - a housing (2); - a cylindrical suds container (4); - a cylindrical drum (3) which is rotatably mounted in the suds container (4) with a horizontal or inclined axis (33) and is designed to hold laundry; - the drum (3) has openings (32) or perforations in its front rear wall (31) to enable an air flow (PL) from the suds container (4) through the drum (3); - the suds container (4) has an air inlet (46) and an air outlet (47); - an inlet device (42) for letting washing liquid into the suds container (4); - a drain device (60) for draining the washing liquid from the suds container; - a process air module (13) which is mounted in the housing (2) above the lye container (4), with - a module housing (17) comprising a channel section (8, 8a), - a fan (9) for conveying process air (PL) through the channel section (8) - a first pipe (95) for connecting the channel section (8) to the air inlet (6) of the lye container (4) and a second pipe (96) for connecting the channel section (8) to the air outlet (47) of the lye container (4) and a filter element (100) which is arranged in the channel section (8a) or in the second pipe (96); - a control device (90) which is set up and programmed to activate and deactivate the actuators, i.e. the motor (70) for rotating the drum (3), the inlet device (42) and the outlet device (60, 61), in order to carry out a treatment program (P), characterized in that the control device (90) is set up to activate the fan (9) for a first predetermined duration at the start of a treatment program (P) during a ventilation phase (V), prior to the activation of the inlet device (42). Laundry treatment device according to Claim 1 , wherein the control device (90) is arranged, at the beginning of a treatment program (P) and while the fan (9) is activated, to activate the motor (70) for rotating the drum (3) for a second predetermined period in order to rotate the drum (3) at a speed lower than the application speed. Laundry treatment device according to Claim 1 or 2 , wherein the first predetermined duration and the second predetermined duration have a value in the range of 30 seconds to 5 minutes, preferably 1 to 3 minutes, wherein the second predetermined duration is preferably set to be equal to or shorter than the first duration. Laundry treatment appliance according to one of the Claims 1 until 3 , wherein the process air module comprises a heat pump device (13), with - a heat exchanger arrangement arranged in the channel section (8) with a condenser (16) as a heating device and an evaporator (15) as a condensing device and - a compressor (14) with connecting lines to the heat exchanger arrangement (15, 16), wherein the control device (90) is designed to activate and deactivate the compressor (14) in order to operate the heat pump device (13). Laundry treatment device according to Claim 4 , wherein the control device (90) is designed to inactivate the heat pump device (13) or the compressor (14) during the ventilation phase (V). Laundry treatment device according to Claim 4 , wherein the control device (90) is designed to activate the heat pump device (13) or the compressor (14) during the ventilation phase (V) in order to heat the process air. Laundry treatment appliance according to one of the Claims 1 until 6 , wherein the control device (90) is designed to - activate and deactivate the drive motor (70) in order to move the drum with washing liquid during the treatment program (P) and to move the laundry during the wet treatment (W) for a predetermined duration; - activating the drain device (60, 61) for removing the used or dirty washing liquid from the drum (3) or the tub (4) after the predetermined time of the wet treatment (Vη) has elapsed; - activating the drive motor (7) for a predetermined duration in order to rotate the drum (3) at a speed above the application speed in order to carry out a spin phase (S). Laundry treatment appliance according to 7, wherein the control device is designed to activate the fan (9), preferably additionally the heat pump device (13) or the compressor (14) after completion of the spin phase (S). Laundry treatment appliance according to one of the Claims 1 until 8th , wherein the housing (2) comprises an access opening (107) to the channel section (8b) or pipe (96) and the channel section (8a) or the pipe (96) has a cover closable access opening (106) for the filter element (100). Laundry treatment appliance according to one of the Claims 1 until 9 , wherein in the lye container (4) the air inlet (46) is arranged in the rear end wall (48) in the lower region and wherein in or on the lye container (4) the air outlet (47) is arranged in the front, middle upper region of the front end wall. Laundry treatment appliance according to one of the Claims 1 until 10 , wherein the fan (9) is arranged at least partially behind the rear end face (48) of the tub (4). Laundry treatment appliance according to one of the Claims 1 until 11 , further comprising a separating means (63) for separating particles, in particular microparticles, from the waste water, wherein the separating device (63) is arranged in the drain device (60) or is connected downstream of the drain device (60). Laundry treatment appliance according to one of the Claims 1 until 12 , which is a washer-dryer (1), wherein the housing is 55 cm to 65 cm wide, 55 to 70 cm deep and 85 to 95 cm high.

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