CN115404681A

CN115404681A - Laundry treatment device comprising an active cooling element

Info

Publication number: CN115404681A
Application number: CN202110589663.1A
Authority: CN
Inventors: R·比蒂高; 庞文峰
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-11-29
Also published as: EP4098795A1

Abstract

The present disclosure relates to a laundry treating apparatus (100) comprising: a housing (101) defining an inner space (103) of the laundry treating apparatus and including a door opening (107); a laundry drum (109) arranged in the inner space of the laundry treatment apparatus and adapted to receive wet laundry (113); a door (111) adapted to close the door opening and comprising a protruding section (119) protruding into the interior space through the door opening when the door is in a closed state, the protruding section comprising a condensation surface facing the interior space; an active cooling element (141, 141-1, 141-2) arranged in the door and adapted to actively cool the condensation surface; and a ventilation and heating unit (125) adapted to heat air and to direct the heated air to flow through wet laundry contained in the laundry drum, so as to obtain heated air with increased humidity, which is in turn directed towards the condensation surface, so as to cause liquid from the heated air with increased humidity to condense at the condensation surface.

Description

Laundry treatment device comprising an active cooling element

Technical Field

The present disclosure relates to a laundry treatment apparatus, in particular a dryer or washer-dryer, comprising an active cooling element.

Background

In a conventional laundry treating apparatus such as a dryer or a washer-dryer, wet laundry is introduced into a laundry drum. During the drying process, the liquid content of the wet laundry has to be reduced by e.g. removing liquid from the laundry.

However, in the conventional laundry treating apparatus such as the dryer or the washer-dryer, such a liquid removing element generally requires complicated elements and devices, which causes an increase in installation space within the laundry treating apparatus, which is expensive, and reduces the installation space within the laundry treating apparatus.

In US 2,328,256, a vented dryer with a fan is disclosed.

Disclosure of Invention

It is therefore an object of the present disclosure to provide a laundry treatment apparatus, in particular a dryer or washer-dryer, which allows to efficiently reduce the liquid content of wet laundry during the drying process.

This object is achieved by the features of the independent claims. Advantageous developments are the subject matter of the dependent claims, the description and the figures.

The present disclosure is based on the following findings: the above object may be achieved by a condensation surface of a door of a laundry treatment apparatus, wherein the condensation surface is actively cooled by an active cooling element of the laundry treatment apparatus, the actively cooled condensation surface facing the interior of the laundry treatment apparatus. Therefore, when the heated air is directed toward the wet laundry accommodated in the laundry drum, the heated air may absorb liquid from the wet laundry to obtain heated air having an increased humidity. The liquid in the heated air with increased humidity may condense at the actively cooled condensing surface of the door, wherein the condensed liquid may especially be transported to a liquid container of, for example, a laundry treatment device.

Accordingly, liquid in wet laundry contained in a laundry drum of the laundry treating apparatus may be efficiently removed from the laundry, thereby allowing an efficient drying process.

The laundry treatment apparatus according to the present disclosure refers in particular to a laundry treatment apparatus suitable for drying laundry, in particular by removing or at least significantly reducing the amount of water adhering to the laundry. In particular, the laundry treating apparatus according to the present disclosure is a dryer adapted to dry laundry. In particular, the laundry treating apparatus according to the present disclosure is a washer-dryer adapted to wash laundry and dry the laundry.

According to an aspect, the present disclosure relates to a laundry treating apparatus, comprising: a case defining an inner space of the laundry treating apparatus, and including a door opening; a laundry drum arranged in an inner space of the laundry treating device and adapted to receive wet laundry; a door adapted to close the door opening, wherein the door comprises a protruding section protruding through the door opening into the interior space of the laundry treating device when the door is in a closed state, wherein the protruding section comprises a condensation surface facing the interior space of the laundry treating device; an active cooling element disposed in the door and adapted to actively cool the condensing surface; and a ventilation and heating unit adapted to heat air and to direct the heated air to flow through wet laundry contained in the laundry drum, so as to obtain heated air with increased humidity, which is in turn directed towards the condensation surface, so that liquid from the heated air with increased humidity condenses at the condensation surface.

Due to the actively cooled condensation surface of the door, liquid in the hot air stream circulating within the interior space of the laundry treatment apparatus can be efficiently removed by condensation. The condensed liquid may then be transferred away from the condensing surface, for example by gravity causing the condensed liquid to flow down the condensing surface, such that the condensed liquid may then flow to a liquid container of the laundry treatment device and/or the condensed liquid may then be conducted away from the laundry treatment device.

Since the condensation surface is already part of the door, which is essential in conventional laundry treatment devices for accessing the interior space of the laundry treatment device, according to the present disclosure, it is not necessary to introduce an additional liquid removing element in the laundry treatment device, thereby simplifying the overall design of the laundry treatment device, which can increase the interior space of the laundry treatment device, and can also significantly reduce costs.

In particular, the condensation surface and the protruding section are formed in one piece.

In particular, the condensation surface and the protruding section are formed of a heat conducting material, in particular steel.

However, in order to obtain an efficient condensation effect, the condensation surface has to be actively cooled by an active cooling element. The active cooling element is positioned in a door of the laundry treatment device and allows active heat dissipation from a condensation surface of the door towards an external space of the laundry treatment device. For such active cooling, the active cooling element is in particular thermally conductively connected to the condensation surface, or to a protruding section of the door, wherein said protruding section of the door is in turn thermally conductively connected to the condensation surface.

In particular, the active cooling element does not extend to the interior of the laundry treatment device.

In particular, the active cooling element comprises an additional ventilation unit adapted to direct an air flow towards the protruding section of the door in order to cool the protruding section and the condensation surface of the protruding section.

In particular, the active cooling element comprises a heat conducting element in physical contact with the protruding section and the condensation surface of the protruding section for conducting heat from the condensation surface out of the interior of the laundry treatment device, in particular to the exterior of the laundry treatment device, e.g. to a heat sink, through the protruding section and through the heat conducting element.

The flow of heated air within the laundry treatment apparatus is provided by a ventilation and heating unit of the laundry treatment apparatus. The ventilation and heating unit directs a flow of heated air, in particular dry heated air, through the wet laundry contained in the laundry drum, so that the heated air absorbs the moisture in the wet laundry, thereby subsequently obtaining heated air with increased humidity.

The flow of increased humidity heated air is then directed by the ventilation and heating unit towards the condensation surface to condense liquid from the increased humidity heated air at the condensation surface, which results in obtaining reduced humidity heated air. The humidity-reduced heated air is then directed back to the ventilation and heating unit of the laundry treatment apparatus to form a ventilation cycle.

According to one embodiment, the door comprises an outer section facing away from the protruding section, wherein the outer section and the protruding section delimit an interior space of the door, wherein the active cooling element is at least partially arranged in the interior space of the door.

In this way, by arranging the active cooling element in the inner space of the door, the active cooling element is in an optimal position to actively cool the condensation surface of the protruding section.

In particular, the outer section of the door faces the outer space of the laundry treating device. In particular, the outer section of the door is at least partially formed by the glass frame of the door.

According to one embodiment, the outer section comprises a plurality of air exchange openings adapted to allow air exchange between the interior space of the door and the exterior space of the laundry treatment device.

In this way, the plurality of air exchange openings allows for efficient heat dissipation from the interior space of the door to the exterior space of the laundry treatment device.

In particular, air from the external space of the laundry treating device may enter the internal space of the door through a plurality of first air openings formed in the external section. In particular, air from the interior space of the door may exit the interior space of the door through a plurality of second air openings formed in the outer section to the exterior space of the laundry treating device.

According to one embodiment, the active cooling element comprises an additional ventilator arranged in the door, in particular in the interior space of the door, and adapted to direct an air flow to the protruding section of the door for active cooling of the condensation surface.

In this way, by the air flow directed by the additional ventilator towards the protruding section, heat can be efficiently dissipated from the condensation surface of the protruding section.

In particular, the additional ventilator is adapted to draw air from the external space of the laundry treatment device into the internal space of the door through the plurality of first air exchange openings in the door and to direct said air flow towards the protruding section of the door in order to absorb heat from the condensation surface of the protruding section and obtain heated air, wherein said heated air is directed from the internal space of the door to the external space of the laundry treatment device through the plurality of second air exchange openings in the door.

According to one embodiment, the active cooling element comprises a heat conducting element which is arranged in the door, in particular in the interior space of the door, and which is in contact with the protruding section of the door in order to actively cool the condensation surface.

In this way, the heat conducting element allows for efficient heat dissipation from the condensation surface in addition to or instead of the additional ventilator.

In particular, the heat conducting element extends from the outer space of the laundry treatment device through the inner space of the door to the protruding section of the door, which enables efficient removal of heat from the condensation surface when the heat conducting element is attached to a heat sink, for example.

According to one embodiment, a heat dissipating element is arranged in the door, in particular in the interior space of the door, wherein the heat dissipating element is connected to the protruding section in a thermally conductive manner for cooling the condensation surface, the active cooling element being particularly adapted to actively cool the heat dissipating element and thus the condensation surface.

In this way, the heat dissipating element allows efficient heat dissipation from the condensation surface of the protruding surface by thermal contact with the protruding section, in particular when the active cooling element actively cools the heat dissipating element.

In particular, the heat dissipating element comprises a plurality of fins which increase the heat dissipating surface of the heat dissipating element. The heat dissipation element is in particular made of aluminum. The heat dissipation element is connected to the protruding section in a bonded manner, in particular by a thermally conductive epoxy material.

According to one embodiment, the ventilation and heating unit is arranged in an air channel of the laundry treatment device, wherein the air channel is delimited by the housing, said air channel is connected to an air intake section of the liquid container, and said air channel is connected to an air exhaust section of the liquid container, in order to direct a flow of heated air into the laundry drum through the air intake section and to return air with reduced humidity to the air channel through the air exhaust section after condensation.

In this way, the two connections of the air passage effectively form an air circulation during the drying process of the laundry treating apparatus.

According to one embodiment, the laundry drum comprises a plurality of drum apertures, in particular in close proximity to the air introduction section of the liquid container, to allow the heated air to efficiently flow into the laundry drum.

In this way, heated air conducted by the ventilation and heating unit, in particular by the air channel, may enter the laundry drum through the plurality of drum apertures, so as to allow efficient drying of the laundry.

According to one embodiment, the laundry treatment apparatus comprises a flow regulator, in particular arranged at the air introduction section of the liquid container and/or at a plurality of drum apertures of the laundry drum, wherein the flow regulator allows to efficiently distribute heated air within the laundry drum.

In this way, the flow regulator allows an efficient optimization of the air flow directed towards the wet laundry contained in the laundry drum, thus achieving an efficient drying of all parts of the laundry.

According to one embodiment, a separating plate is arranged on a side of the condensation surface facing the laundry drum, wherein in particular the condensed liquid is collected in a collecting region between the condensation surface and the separating plate.

In this way, the partition plate prevents the laundry inside the laundry drum from coming into contact with the condensation surface.

In particular, the separation plate is arranged spaced apart from the condensation surface, wherein the condensation surface and the separation plate delimit a collection area.

In particular, the partition plate comprises a plurality of holes which ensure that the air flow inside the laundry treatment apparatus is not interrupted.

According to one embodiment, a condensation channel is formed at the condensation surface, wherein the condensation channel is adapted to guide condensed liquid away from the condensation surface, preferably into a liquid container of the laundry treatment apparatus.

In this way, the condensing channels allow for direct removal of condensed liquid from the condensing surface.

According to one embodiment, the laundry treatment apparatus comprises a liquid container arranged in an inner space of the laundry treatment apparatus, wherein the laundry drum is located in the liquid container, wherein the condensation surface is arranged, in particular, vertically above a bottom of the liquid container, and wherein condensed liquid flows from the condensation surface into the liquid container under the influence of gravity.

In this way, the liquid container serves as a reservoir for condensed liquid flowing out of the condensation surface.

According to one embodiment, the condensation surface is formed to direct condensed liquid towards an opening between the casing and the laundry drum.

In this way, condensed liquid may be prevented from entering the machine chamber of the laundry treating apparatus.

According to one embodiment, the opening is connected to the liquid container by a fluid channel, such that condensed liquid may flow from the condensation surface through the opening and through the fluid channel into the liquid container of the laundry treatment device.

In this way, the fluid passage allows the condensed liquid to efficiently flow into the liquid container.

According to one embodiment, the condensation surface is formed of a thermally conductive material, preferably a metal.

In this way, an efficient condensation of the liquid at the condensation surface can be ensured.

Drawings

Other examples of the principles and techniques of this disclosure are explained in more detail with reference to the accompanying drawings, in which:

fig. 1 shows a schematic view of a laundry treatment apparatus according to one embodiment;

fig. 2 shows a schematic view of a laundry treatment apparatus with an active cooling element according to an embodiment; and

fig. 3 shows a schematic view of a laundry treatment apparatus with an active cooling element according to an embodiment.

Detailed Description

Fig. 1 shows a schematic view of a laundry treating apparatus according to an embodiment.

The laundry treating device 100, which is only schematically shown in fig. 1, comprises a casing 101, which delimits an interior space 103 of the laundry treating device 100 with respect to an exterior space 105 of the laundry treating device 100. The laundry treating device 100 further comprises a door opening 107 through which a user of the laundry treating device 100 can insert laundry into the interior space 103 of the laundry treating device 100, in particular into a schematically illustrated laundry drum 109, which is arranged in the interior space 103 of the laundry treating device 100.

During the laundry treating process, the laundry received in the laundry drum 109 is treated, and then the user may take the treated laundry out of the laundry drum 109 through the door opening 107.

The laundry treating apparatus 100 further includes a door 111 adapted to close the door opening 107, so that in a state where the door 111 is closed, efficient treatment of laundry during the laundry treating process can be ensured. On the other hand, the door 111 may be opened such that a user of the laundry treating device 100 may access the interior space 103 of the laundry treating device 100 through the door opening 107 to put laundry into the interior space 103 or take laundry out of the interior space 103.

The laundry treating apparatus 100 according to the present disclosure refers in particular to a laundry treating apparatus 100 suitable for drying wet laundry, in particular by removing or at least significantly reducing the amount of water adhering to the wet laundry. In particular, the laundry treating apparatus 100 according to the present disclosure is a dryer adapted to dry laundry. In particular, the laundry treating apparatus 100 according to the present disclosure is a washer-dryer adapted to wash laundry and dry the laundry.

For further details of the laundry treatment apparatus 100, further reference is made to fig. 2 and 3.

Fig. 2 shows a schematic view of a laundry treatment apparatus with an active cooling element according to an embodiment.

In fig. 2, a cross section through the laundry treating apparatus 100 is shown. The laundry treating apparatus 100 shown in fig. 2 is a washer-dryer adapted to wash laundry 113 and dry the laundry 113. However, within the scope of the present embodiment, the laundry treating apparatus 100 shown in fig. 2 may also be a clothes dryer, which is only suitable for drying the laundry 113 and not for washing the laundry 113.

The laundry treating device 100 comprises a casing 101 delimiting an inner space 103 of the laundry treating device 100 with respect to an outer space 105 of the laundry treating device 100. In the inner space 103 a laundry drum 109 is placed, wherein the laundry drum 109 is adapted to receive laundry 113. The laundry treating apparatus 100 further comprises a driving shaft 115 which may rotate the laundry drum 109 during a drying process.

The laundry drum 109 is arranged in a liquid container 117 of the laundry treatment apparatus 100, wherein said liquid container 117 is adapted to receive any liquid extracted from the laundry 113 during the drying process. Since the laundry treating apparatus 100 is a washer-dryer, the liquid container 117 is also adapted to receive any washing liquid supplied to the laundry 113 during the washing process. Any water inlets and outlets of the liquid container 117 are not shown in fig. 2.

In fig. 2, further, the door 111 of the laundry treating apparatus 100 is shown in a closed state of the door 111, in which the door 111 closes the door opening 107 of the casing 101. As can be seen from fig. 2, the door 111 comprises a protruding section 119 protruding through the door opening 107 into the interior space 103 of the laundry treating device 100. The door 111 further comprises an outer section 121 which faces away from the protruding section 119, wherein in particular the outer section 121 is formed at least partially by the glass frame of the door 111. The outer section 121 and the protruding section 119 of the door 111 define an interior space 123 of the door 111.

Furthermore, in fig. 2, a ventilation and heating unit 125 of the laundry treatment device 100 is shown, wherein the ventilation and heating unit 125 is located in particular in an air channel 127 of the laundry treatment device 100, which air channel 127 is delimited by the housing 101 of the laundry treatment device 100.

The air passage 127 is connected to the air introducing section 129 of the liquid container 117, and the air passage 127 is connected to the air discharging section 131 of the liquid container 117.

The ventilation and heating unit 125 includes a heater 125-2 adapted to heat air within the air passage 127, and includes a ventilator 125-1 adapted to generate a flow of heated air within the air passage 127.

As can be seen from the arrows shown in fig. 2, the heated air is guided by the ventilation and heating unit 125 from the air channel 127 and through the air introduction section 129 of the liquid container 117 and further into the laundry drum 109, so that the heated air comes into contact with the wet laundry 113 contained in the laundry drum 109. Since the humidity of the heated air entering the laundry drum 109 is low, the heated air may absorb the moisture of the wet laundry 113 during the drying process, thereby obtaining heated air with increased humidity. Said air flow from the ventilation and heating unit 125 to the laundry 113 is represented in fig. 2 by a first air flow portion 132.

The heated air with increased humidity is then directed towards the condensation surface 133 of the door 111, wherein said condensation surface 133 is particularly located at the protruding section 119 of the door 111. As the temperature of the condensation surface 133 decreases, liquid from the hot air with increased humidity condenses at the condensation surface 133, thereby obtaining air with reduced humidity.

The reduced humidity air is then guided back through the air outlet section 131 of the liquid container 117 to the air channel 127 and further to the ventilation and heating unit 125, which is adapted to heat the reduced humidity air again, thereby forming an air circulation. Said air flow from the condensation surface 133 through the air discharge section 131 back to the ventilation and heating unit 125 is represented in fig. 2 by a second air flow portion 135.

As shown in fig. 2, the liquid condensed at the condensation surface 133 flows down the condensation surface 133 due to gravity and is guided through an opening 137 between the housing 101 and the laundry drum 109, such that the condensed liquid is received within the liquid container 117. The flow of condensed liquid is represented in fig. 2 by liquid stream 139.

For an efficient condensation of the liquid at the condensation surface 133, the condensation surface 133 has to be actively cooled. To this end, the laundry treating device 100 comprises an active cooling device 141 adapted to actively cool the condensation surface 133.

In the embodiment shown in fig. 2, the active cooling means 141 comprises an additional ventilator 141-1 adapted to direct an air flow towards the condensation surface 133. In particular, the additional ventilator 141-1 is disposed in the inner space 123 of the door 111. In particular, the door 111, in particular the outer section 121 of the door 111, comprises a plurality of air exchange openings 143 which allow an efficient air exchange between the inner space 123 of the door 111 and the outer space 105 of the laundry treating device 100.

In particular, the additional ventilator 141-1 is adapted to suck air into the interior space 123 of the door 111 through the plurality of first air exchange openings 143-1 in order to direct the air towards the protruding section 119 of the door 111, in particular towards the cooling surface 145 of the protruding section 119, wherein said cooling surface 145 faces the interior space 123 of the door 111.

Due to the material of the protruding section 119 of the door 111 (wherein said protruding section 119 comprises a condensation surface 133, in particular having an efficient thermal conductivity, since it is in particular formed of metal, e.g. steel), the guided air flow is adapted to cool the protruding section 119 as well as the condensation surface 133, which is arranged on the side of the door 111 facing the interior space 103 of the laundry treating device 100.

In particular, a condensation channel, not shown in fig. 2, may be formed at the condensation surface 133, which is adapted to guide condensed liquid away from the condensation surface 133, preferably into the liquid container 117 of the laundry treating device 100.

In particular, at least a portion of the protruding section 119 comprising the condensation surface 133 is formed of stainless steel having a high efficiency thermal conductivity of about 50W/mK, and being corrosion resistant, and allowing for a sealing function, having high efficiency protection properties for the fibers of the garment 113, and being a cost-effective material.

Even though not shown in fig. 2, the active cooling element 141 may comprise a heat conducting element 141-2 in heat conducting contact with the condensation surface 133 to cool the condensation surface 133. In particular, when the heat conducting element 141-2 is attached to a heat sink, for example, the heat conducting element 141-2 may extend from the external space 105 of the laundry treating device 100 through the internal space 123 of the door 111 to the protruding section 119 of the door 111, which enables efficient removal of heat from the condensation surface 133.

By cooling the protruding section 119 and the condensation surface 133, the cold ambient air is heated and the heated air is guided from the interior space 123 of the door 111 through the plurality of second air exchange openings 143-2 back to the exterior space 105 of the laundry treatment device 100, thereby forming an air circulation.

As can be seen in fig. 2, the door 111 optionally includes a heat sink element 147 located in the interior space 123 of the door 111 and connected to the condensing surface 133 in a thermally conductive manner to efficiently cool the condensing surface 133. The heat sink element 147 is specifically attached to the cooling surface 145 of the protruding section 119 of the door 111.

The heat dissipating element 147 particularly comprises a plurality of fins, thereby increasing the heat dissipating surface of the heat dissipating element 147. The heat dissipation element 147 is in particular made of aluminum. In particular, the heat dissipation element 147 is connected to the cooling surface 145 in a material-bonded manner, in particular by a thermally conductive epoxy material.

The additional ventilation unit 141-1 is particularly adapted to direct an air flow towards the heat-radiating element 147 in order to be able to efficiently cool the condensation surface 133.

In summary, the laundry treating device 100 according to fig. 2 allows to have an active cooling element 141 integrated in the door for cooling the condensation surface 133 of the door 111, so as to be able to efficiently remove the liquid in the heated air with increased humidity inside the laundry treating device 100.

Due to the above-described simplification of the removal of liquid, the laundry treating apparatus 100 according to fig. 2 allows maximizing the space utilization of the laundry treating apparatus 100. In addition, structural impact to the laundry drum 109 is minimized. Since the condensation surface 133 is accessible only by opening the door 111, the condensation surface 133 is easy to clean. The thermal influence on the gasket is reduced compared to the conventional washer-dryer.

The laundry treating apparatus 100 shown in fig. 3 is substantially the same as the laundry treating apparatus 100 shown in fig. 2 except for the following differences.

The laundry washing apparatus 100 shown in fig. 3 comprises an optional separation plate 149 arranged on the side of the condensation surface 133 facing the laundry drum 109. Thus, the condensation surface 133 and the separation plate 149 delimit the collection area 151 such that liquid condensed at the condensation surface 133 of the door 111 is retained in the collection area 151.

In particular, at the condensation surface 133 a condensation channel may be formed, not shown in fig. 3, which is adapted to guide condensed liquid away from the condensation surface 133, preferably into the liquid container 117 of the laundry treating device 100.

The laundry treatment apparatus 100 shown in fig. 3 comprises an optional plurality of drum holes 153 formed in the laundry drum 109, in particular in close proximity to the air introduction section 129 of the liquid container 117, to allow the heated air to efficiently flow from the air channel 127 through the introduction section 129 of the liquid container 117 and into the laundry drum 109 through the drum holes 153 of the laundry drum 109.

The laundry treatment apparatus 100 shown in fig. 3 comprises an optional flow regulator 155, which is arranged in particular at the air introduction section 129 of the liquid container 117 and/or at a plurality of drum apertures 153 of the laundry drum 109, and which flow regulator 155 enables an efficient distribution of heated air within the laundry drum 109.

Although preferred embodiments of the present disclosure have been described herein, many variations are possible which remain within the concept and scope of the disclosure. Such variations would become clear to one of ordinary skill in the art after inspection of the specification and the drawings. The disclosure, therefore, is not to be restricted except within the spirit and scope of any appended claims.

List of reference numerals

100. Clothes treating device

101. Shell body

103. Inner space of clothes processing device

105. External space of clothes treating device

107. Door opening

109. Clothes drum

111. Door with a door panel

113. Clothing article

115. Drive shaft

117. Liquid container

119. Protruding section of door

121. Exterior section of door

123. Inner space of door

125. Ventilation and heating unit

125-1 ventilator

125-2 heater

127. Air channel

129. Air introduction section

131. Air discharge section

132. First air flow part

133. Condensation surface of door

135. Second air flow portion

137. Opening between housing and laundry drum

139. Flow of liquid

141. Active cooling element

141-1 additional ventilator

143. Multiple air exchange openings

143-1 first air exchange openings

143-2 second air exchange openings

145. Cooling surface of a protruding section of a door

147. Heat dissipation element

149. Partition board

151. Collecting area

153. Multiple roller holes

155. Flow regulator

Claims

1. A laundry treating apparatus (100) comprising:

a housing (101) defining an inner space (103) of the laundry treating apparatus (100) and including a door opening (107),

a laundry drum (109) arranged in an interior space (103) of the laundry treatment apparatus (100) and adapted to receive wet laundry (113),

a door (111) adapted to close the door opening (107), wherein the door (111) comprises a protruding section (119) protruding through the door opening (107) into the interior space (103) of the laundry treatment device (100) when the door (111) is in a closed state, the protruding section (119) comprising a condensation surface (133) facing the interior space (103) of the laundry treatment device (100),

an active cooling element (141, 141-1, 141-2) arranged in the door (111) and adapted to actively cool the condensation surface (133), and

-a ventilation and heating unit (125) adapted to heat air and to direct the heated air to flow through wet laundry (113) contained in the laundry drum (109) so as to obtain heated air with increased humidity, and to direct the heated air with increased humidity towards the condensation surface (133) so as to cause liquid from the heated air with increased humidity to condense at the condensation surface (133).

2. The laundry treatment apparatus (100) according to claim 1, wherein said door (111) comprises an outer section (121) facing away from said protruding section (119), wherein said outer section (121) and said protruding section (119) delimit an inner space (123) of said door (111), said active cooling element (141, 141-1, 141-2) being arranged at least partially in said inner space (123) of said door (111).

3. The laundry treating device (100) according to claim 2, wherein said outer section (121) comprises a plurality of air exchange openings (143, 143-1, 143-2) adapted to allow air exchange between an inner space (123) of said door (111) and an outer space (105) of said laundry treating device (100).

4. The laundry treatment apparatus (100) according to any of the preceding claims, wherein said active cooling element (141, 141-1, 141-2) comprises an additional ventilator (141-1) arranged in said door (111), in particular in an inner space (123) of said door (111), adapted to direct an air flow towards a protruding section (119) of said door (111) in order to actively cool said condensation surface (133).

5. Laundry treatment apparatus (100) according to any of the previous claims, wherein said active cooling element (141, 141-1, 141-2) comprises a heat conducting element (141-2) arranged in said door (111), in particular in an inner space (123) of said door (111), said heat conducting element being in contact with a protruding section (119) of said door (111) to actively cool said condensation surface (133).

6. Laundry treatment apparatus (100) according to any of the previous claims, wherein a heat sink element (147) is arranged in the door (111), in particular in the inner space (123) of the door (111), wherein the heat sink element (147) is connected to the protruding section (119) in a heat conductive manner for cooling the condensation surface (133), and the active cooling element (141, 141-1, 141-2) is in particular adapted for actively cooling the heat sink element (147) for cooling the condensation surface (133).

7. Laundry treatment device (100) according to any of the previous claims, wherein said ventilation and heating unit (125) is arranged in an air channel (127) of the laundry treatment device (100), wherein said air channel (127) is delimited by said casing (101), and said air channel (127) is connected to an air intake section (129) of a liquid container (117), and said air channel (127) is connected to an air exhaust section (131) of a liquid container (117), so as to introduce a flow of heated air into the laundry drum (109) through the air intake section (129) and return air with reduced humidity after condensation to said air channel (127) through the air exhaust section (131).

8. Laundry treatment apparatus (100) according to any of the previous claims, wherein the laundry drum (109) comprises a plurality of drum apertures (153), in particular in close proximity to the air introduction section (129) of the liquid container (117), for efficient flow of heated air into the laundry drum (109).

9. Laundry treatment device (100) according to any of the previous claims, wherein the laundry treatment device (100) comprises a flow regulator (155), in particular arranged at an air introduction section (129) of a liquid container (117) and/or at a plurality of drum apertures (153) of the laundry drum (109), and the flow regulator (155) enables an efficient distribution of heated air within the laundry drum (109).

10. Laundry treatment apparatus (100) according to any of the previous claims, wherein a separation plate (149) is arranged at a side of the condensation surface (133) facing the laundry drum (109), wherein in particular condensed liquid is collected in a collection area (151) between the condensation surface (133) and the separation plate (149).

11. Laundry treatment apparatus (100) according to any of the previous claims, wherein a condensation channel is formed at said condensation surface (133), wherein said condensation channel is adapted to guide condensed liquid away from said condensation surface (133), preferably into a liquid container (117) of said laundry treatment apparatus (100).

12. Laundry treatment apparatus (100) according to any of the previous claims, wherein the laundry treatment apparatus (100) comprises a liquid container (117) arranged in the interior space (103) of the laundry treatment apparatus (100), wherein the laundry drum (109) is located in the liquid container (117), the condensation surface (133) being arranged in particular vertically above the bottom of the liquid container (117), condensed liquid flowing from the condensation surface (133) into the liquid container (117) due to gravity.

13. Laundry treatment apparatus (100) according to any of the previous claims, wherein said condensation surface (133) is formed to direct condensed liquid towards an opening (137) between said casing (101) and said laundry drum (109).

14. Laundry treatment apparatus (100) according to claim 13, wherein said opening (137) is connected to said liquid container (117) by a fluid passage, such that condensed liquid can flow from said condensation surface (133) through said opening (137) and in particular through a fluid passage into the liquid container (117) of the laundry treatment apparatus (100).

15. Laundry treatment apparatus (100) according to any of the previous claims, wherein said condensation surface (133) is formed of a heat conductive material, preferably metal.