Patent Application
20230301485
The present invention relates to a household dishwasher having at least one air outlet so as to discharge in particular moist air from a dishwasher cavity in which dishware, glasses, cutlery and similar items to be washed can be processed, according to the pre-characterizing clause of claim 1.
With such dishwashers, it is desirable to be able to remove the items to be washed from the dishwasher cavity as completely dried as possible and without water droplets.
For a good drying result of items to be washed, such as, for example, dishware, glasses, cutlery and similar items, which can be processed in a dishwasher cavity, it is advantageous to be able to remove moist air from the dishwasher cavity. It is therefore known to connect the dishwasher cavity to an air outlet which transports moist air from the dishwasher cavity into the outside environment. Such an air outlet is often located in the upper region of a front door that can be opened and closed. It is therefore relatively complex and expensive to supply air to this moving unit, and in addition, due to the high arrangement in the appliance, there is the risk that cabinets or worktops that are located above the household dishwasher, or even parts of the household dishwasher and its paneling, will be damaged by the high moisture flowing out, or that the kitchen floor in the region in front of the household dishwasher will become wet and therefore slippery. In addition, there is a considerable draught in the vicinity of such an air outlet, which is very uncomfortable, especially in small kitchens where users sit close to a household dishwasher.
As an alternative to an air outlet in the front door, the front door of the respective household dishwasher is frequently opened in gaps during the drying phase of a dishwashing program that is to be executed so as to assist drying, so that moist dishwasher interior air can escape from the dishwasher interior of the dishwasher cavity into the environment at the installation site of the household dishwasher and be replaced by ambient air that is drier than it. However, opening the door in this way—especially when it occurs in the initial phase of the drying phase—is associated with the removal of heat energy from the dishwasher cavity, which is counterproductive in terms of energy, since the heat is required for drying.
The invention is based on the problem of achieving the greatest possible avoidance of water vapor impact on surrounding furniture, the kitchen floor and front parts of the household dishwasher while maintaining an attractive visual arrangement and at the same time enabling an air outlet to be assembled and dismantled in a simple manner, also for maintenance purposes.
The invention solves this problem by a household dishwasher having the features of claim 1. With respect to advantageous embodiments and developments of the invention, reference is made to claims 2 to 21.
Insofar as spatial and/or local specifications are given in the context of the invention, these are preferably to be understood from a standpoint which a user assumes during intended use and/or operation in front of the household dishwasher in accordance with the invention when it is set up or installed ready for operation.
When dishwasher interior air is discharged from the dishwasher interior of the dishwasher cavity by means of the air discharge unit into the open air, i.e. into the environment at the respective installation or assembly location of the household dishwasher that is designed in accordance with the invention during at least one drying phase, the front door of the household dishwasher, which can preferably be pivoted about a lower horizontal pivot axis that is oriented in the transverse or width direction, remains closed, i.e. closed. This renders it possible to avoid moist dishwasher interior air flowing out from the opening gap between the upper region of the front door and the dishwasher cavity and leaving said dishwasher cavity in an upward direction and to avoid condensate from the outflowing moist warm dishwasher interior air depositing on items of kitchen furniture that are located above the opening gap, such as, for example, a kitchen worktop, which could lead to moisture damage there. It is also possible to avoid uncontrollable and/or excessive heat losses from the dishwasher interior of the dishwasher cavity into the environment, which would be associated with a gap-wise door opening, which would adversely affect the drying efficiency of the respective drying phase. In addition, by the front door remaining closed during the respective drying phase, dirt particles such as, for example, dust particles and/or germs and/or other foreign bodies are prevented from entering the dishwasher interior from the environment onto the items to be washed that have previously been washed clean by means of washing liquid. Finally, by the front door that is remaining closed, operating errors and/or misinformation which could be caused in the case of the user by a gap-wise open front door are largely avoided. For example, a user often mistakenly interprets a front door that is open in a gap as the end of a dishwashing program, even though the drying phase that concludes the program has not yet ended.
The household dishwasher that is designed in accordance with the invention provides in particular one or more dishwashing programs, in which in each case the items to be washed that are to be cleaned in the dishwasher interior of the dishwasher cavity of the household dishwasher are exposed to washing liquid or washing liquor in one or more liquid-carrying sub-washing phases, such as, for example, pre-washing phase, cleaning phase, intermediate washing phase, clear washing phase, and while the front door remains closed are then dried in a drying phase that concludes the washing program by means of the air discharge unit in accordance with the invention, in order subsequently after opening the front door to be able to remove said items from the dishwasher interior as completely dried as possible and without water droplets. If necessary, the end of the drying phase of the respective dishwashing program can be followed by a so-called “storage function phase” or storage phase for a predetermined period of time, until the end of which it is ensured by means of one or more additional drying phases that the items to be washed continue to remain dry in the dishwasher interior while the front door of the household dishwasher remains closed. This “storage function phase” can preferably extend over several days. In addition or independently thereof, other operating functions of the household dishwasher can also be provided by the air discharge unit in accordance with the invention. For example, an odor elimination program can be implemented in which dishwasher interior air is discharged into the environment of the household dishwasher by means of the air discharge unit and fresh air is sucked as a replacement into the dishwasher interior if there is a risk of bad odors forming in the dishwasher interior. This can happen, for example, if, after the end of the last dishwashing program and the removal of the clean and dried items to be washed, new soiled items to be washed are brought into the dishwasher interior of the dishwasher cavity and are then stored for a longer period of time in the dishwasher interior of the dishwasher cavity with the front door closed until the next dishwashing program is started.
The fact that, in accordance with the invention, an air discharge unit that comprises at least one air outlet is arranged in the lower quarter of the appliance height means that, if water vapor rises from the air outlet, at most the household dishwasher itself, in particular its front door, is acted upon, so that some of the water can condense there and does not impact upon the furniture above. In addition, the fact that the air outlet extends as a slotted outlet over at least two-thirds of the width of the household dishwasher ensures a broad distribution of the moisture flowing out and ensures it mixes with the drier outside air in the room. The moist dishwasher interior air flowing out is thus distributed, and any high moisture entry into furniture is avoided. In a favorable manner, this largely prevents any noticeable condensate from depositing at all on the front door above the slotted outlet, in particular on its lower edge and/or any furniture panel or decorative panel that is attached to the front. Drafts are also considerably reduced due to the good distribution width of the air. Assembling and dismantling are facilitated as a result of the air discharge unit that comprises the air outlet being mounted indirectly or directly on a panel or front panel that is attached to the front side of the household dishwasher, wherein the retaining connection between an air discharge unit, which comprises the air outlet, and the front panel can be released when the front panel is dismantled. The front panel can be removed without thereby an air supply line that supplies air, in particular dishwasher interior air, to the air discharge unit being subjected to unacceptably high tensile stresses, in particular without an air hose that is provided as an air supply line being overstretched, or even being able to tear off from the air discharge unit. Maintenance of the household dishwasher is also greatly facilitated as a result.
In particular, the front panel is a plinth strip or plinth board which covers at the front below the front door a lower plinth region of the household dishwasher, in particular said lower plinth region being set back relative to the front of the household dishwasher, and the dishwasher cavity is arranged above said lower plinth region. If the household dishwasher is installed as a built-in appliance close to the floor in a built-in niche below a kitchen worktop, the plinth strip or plinth board is preferably located on the floor. In this case in particular, the front panel, preferably the plinth board, can be set back in the depth direction of the household dishwasher relative to the front lower edge of the front door, which can be fitted with a front furniture panel or decorative panel. If the household dishwasher is installed in a built-in niche below the worktop of a built-in kitchen, the front panel can be formed in particular by the kitchen plinth strip of the built-in kitchen, which preferably stands up on the floor. If the household dishwasher is designed as a freestanding appliance, an appliance which is built in below a worktop, or as a compact appliance such as, for example, a tabletop appliance, or as a built-in appliance that is built into a piece of kitchen furniture such as, for example, a kitchen wall unit, the plinth panel can be attached to its appliance plinth, which is setback relative to the plinth panel, preferably at the factory, in such a way that the plinth panel is essentially flush with the outer surface of the front door when the latter is brought into its approximately vertical closing end position.
If the retaining connection between the air discharge unit, which comprises the air outlet, and the front panel can be released without the use of tools when the front panel is dismantled, the front panel, in particular the plinth panel, can be dismantled particularly quickly and easily.
In particular, the retaining connection between the air discharge unit, which comprises the air outlet, and the front panel can also be released, preferably by dismantling the front panel alone, in order thus to be able to remove the front panel in just one step.
In addition or alternatively, the retaining connection between the air discharge unit, which comprises the air outlet, and the front panel can be moved into an engagement position without the use of tools by assembling the front panel in order also to facilitate (re)assembling the front panel.
Preferably, the air outlet of the air discharge unit has an air discharge duct that extends toward the front side when viewed in its final assembly position.
The air discharge duct is expediently designed in such a way that, in the final assembly position of the air discharge unit, it engages over the front panel which closes off the plinth of the household dishwasher at the front, and in particular projects at least the same distance toward the front side with respect thereto. If, advantageously, the air outlet of the air discharge unit with its air discharge duct engages over a front panel, in particular a plinth panel, which closes a plinth at the front and projects at least the same distance toward the front side with respect thereto, air can be discharged to the front without moisture impacting a decorative panel or kitchen furniture panel, which is attached to the front of the front door, and/or on or in adjacent furniture, this is particularly the case if the household dishwasher is installed, for example, on the floor in a built-in kitchen niche below a kitchen worktop or in a built-in niche of a piece of kitchen furniture—preferably as a compact appliance—installed in a kitchen cabinet. In addition, the air outlet facility of the air outlet can be accommodated in this way in a visually inconspicuous manner with good design. Thus, the discharged air is guided away from the front of the household dishwasher in accordance with the invention, in particular from its front door that is fitted with a decorative panel or kitchen furniture panel, and/or the adjacent kitchen furniture; the accumulation of moisture in the installation space of kitchen furniture is then avoided. In this way, the air which is flowing out there at the front end of the, in particular slot-shaped, air discharge duct of the air outlet, and which is often laden with moisture can mix quickly and over a large area with the outside air in the kitchen, said outside air being drier than said air which is flowing out.
Preferably, the air discharge unit comprises an air pre-distributor which, in its final assembly position, projects upward and extends in the width direction, the upper end of which is adjoined by the air discharge duct of the, in particular slot-shaped, air outlet, said air discharge unit extending toward the front side, and which has an, in particular rear, connection for an air supply line. In the final assembly position of the air discharge unit, the air distributor is thus located lower in the height direction, i.e. below the forward extending or projecting air discharge duct. In the final assembly position of the air discharge unit, it is favorably arranged in particular behind the front panel. In particular, it is detachably mounted on the rear wall thereof. Preferably, the cavity of the air distributor is closed at its lower end in an airtight and/or watertight manner so that it forms a condensate collection tank in its lower region.
In particular, the air discharge unit, which comprises the air discharge duct, the air pre-distributor and the connection for the air supply line, is designed as one part or one piece, i.e. it forms a single component. This greatly simplifies its assembling/dismantling. Preferably, it is made of plastic, in particular by plastic injection molding.
With the invention, it is further possible that, when the front panel is dismantled, the air outlet having an air distributor, which supplies it with air, in particular dishwasher interior air, and a, preferably rear, connection which is allocated in particular thereto and which in particular comprises a rear air inlet opening, remain together as a common air discharge unit and in this case an air connection line or air supply line which is designed in particular with excess length and can be designed, for example, as a flexible connection hose or corrugated connection tube issues into the connection and can still be held in a mounted position on the connection of the air discharge unit. Removal of the front panel is therefore easy and does not lead to further problems of forced dismantling of the air discharge unit that is located behind and has the air connection line coupled to its connection. The air connection line is connected with its upstream end to at least one air outlet opening in at least one boundary wall of the dishwasher cavity. Preferably, the air outlet opening is located in a side wall of the dishwasher interior. Expediently, an air conveying element such as, for example, a fan is inserted into the air connection line so as to extract dishwasher interior air from the dishwasher interior. In this way, an upstream section of the air connection line fluidically connects the air outlet opening that is provided in a boundary wall of the dishwasher interior with the air inlet of the air conveying element, while a downstream section of the air connection line fluidically connects the air outlet of the air conveying element with the, preferably rear, connection of the air discharge unit. This air conveying element draws in dishwasher interior air from the dishwasher interior via the upstream section of the air connection line and discharges it via the downstream section of the air connection line via the connection of the air discharge unit into its air pre-distributor.
If the front panel is allocated a front protective frame, which in turn is connected or can be connected to the air discharge unit, preferably to its, in particular slot-shaped, air discharge duct, the protective frame can conceal saw edges in the front panel, ensure forced alignment of the air discharge unit and always ensure the correct position of the parts against one another during installation and removal, in particular if the protective frame itself is detachably connected or can be detachably connected to the air discharge unit, in particular by bracing. Preferably, the protective frame is inserted into an upward open cutout region of the front panel—preferably from the front—and is firmly connected there to the front panel, in particular by at least one screw connection.
An advantageous retaining connection between the air discharge unit, which comprises the air outlet, and the front panel can be achieved by one or more clip or snap connections. This clip connection or snap connection is mechanically stable and yet easily detachable.
It is possible to provide on the rear side of the front panel, said rear side facing away from the front, retaining cones having spreading wings which are distributed over their circumference and can be connected to the air discharge unit. The air discharge unit can then be plugged onto these retaining cones.
It is also possible to provide at least one releasable clip or snap connection between the air discharge unit and the protective frame. In this case, the forward extending, in particular slot-shaped, air discharge duct of the air discharge unit is releasably connected to this from the rear side. For this purpose, at least one retaining tab for connection to the air discharge unit can preferably be provided on the rear side of the protective frame, said rear side facing away from the front side. This can be disengaged from the air discharge unit in particular by engaging a tool from the front side of the protective frame. If the retaining tab is provided with latching elements, as the front panel is pressed in said retaining tab can automatically latch with the air discharge unit of the air outlet and retain it securely.
In addition or as an alternative to the clip connection, the retaining connection between the air discharge unit, which comprises the air outlet, and the front panel can comprise a magnetic connection, for example via neodymium magnets.
It is also possible, additionally or alternatively, for the retaining connection between the air discharge unit, which comprises the air outlet, and the front panel to comprise a Velcro connection.
Very advantageously, the air outlet forms an air discharge duct several centimeters long in the direction toward the front side and the discharge direction of said air discharge duct is inclined downward by several degrees relative to the external floor, such as, for example, the kitchen floor. This allows the moist outflowing air to pass under a door leaf that projects relatively far downward, and to only rise further forward in the outer space due to its own heat compared to the surrounding colder kitchen air. The door leaf as well as surrounding furniture fronts are thus well protected against moisture.
In particular, the air discharge duct is inclined between 2° and 10°, preferably between 4° and 6°, toward the external floor such as, for example, kitchen floor, so as to allow the desired underflow of a furniture leaf that is attached to the front of the front door, but on the other hand does not flow down so far, i.e. flow downward, that moisture forms on the external floor such as, for example, kitchen floor. A somewhat greater inclination up to a maximum of approx. 20° is also possible.
If the air outlet (particularly in relation to a household dishwasher with a 60 cm appliance width) is at least 40 centimeters wide overall, a very wide and uniform distribution of the moisture and the air flowing out can be achieved. Particularly favorably, the width of the air outlet can occupy almost the entire width of the appliance.
In particular, the air outlet is designed as a flat slotted outlet with a height-to-width ratio of between 1:20 and 1:200, preferably of about 1:100 (especially in relation to a household dishwasher with a 60 cm appliance width). Despite the structurally and visually very low height, a high discharge surface can thus be achieved.
A high efficiency can be achieved if the air outlet can be controlled by at least one conveying element such as, for example, a fan wheel, which is arranged in the lower region of the household dishwasher in the depth direction behind the air discharge unit that comprises the air outlet. The fan wheel or the like can then be located at approximately the same height as the air outlet itself and can be arranged in the plinth of the household dishwasher to save space.
A favorable further development of the invention provides that the fan wheel or a similar conveying element is controllable in cycles or also continuously, namely during the drying phase of the respective dishwashing program and/or also beyond the end of this drying phase over a period of several days. In the latter case, the household dishwasher can serve in a favorable manner as storage furniture or storage for items to be washed, such as, for example, dishware, glasses, cutlery and the like, and these items to be washed that have been previously washed and dried during the respective dishwashing program that is executed can also be dried repeatedly in phases or also continuously over a period of several days. The front door of the household dishwasher preferably remains closed both during the regular drying phase of the respective dishwashing program that is to be implemented and during any subsequent “storage function phase”. This storage of items to be washed in the dishwasher interior of the dishwasher cavity, preferably with the front door remaining closed, following the end of the drying phase of the respective previously executed dishwashing program, is referred to as the “storage function phase”. The conveying element can be controlled both for its operation during the drying phase of the respective dishwashing program and during any subsequent “storage function phase”, if necessary via moisture detection in the dishwasher interior of the dishwasher cavity.
Further advantages and features result from exemplary embodiments of the subject matter of the invention shown in the drawing and described below.
In the drawing:
The household appliance shown schematically in
The household dishwasher 1 that is described below according to
The dishwasher cavity 2 can be closed, in particular at this front side V, by a front door or flap 3. This front door 3 is shown in
On the outer and front side V of the household dishwasher 1, which is vertical in the closed position and faces the user, the front door 3 can be provided with a decorative panel 6 to provide a visual and/or tactile enhancement and/or to match surrounding kitchen furniture.
The household dishwasher is designed here as a stand-alone or as a so-called partially integrated or also as a fully integrated appliance. In the latter case, the appliance body 5 can also be essentially flush with the outer walls of the dishwasher cavity 2. It is then possible to forego a housing that surrounds this on the outside. In the lower region of the household dishwasher, there is a plinth 12 on which the dishwasher cavity 2 is mounted and which serves in particular to receive functional elements of the household dishwasher, such as, for example, a pump for circulating the washing liquor, an emptying pump, a pump sump, a control unit, etc. In this plinth 12 itself or, as here in the exemplary embodiment, in its front setback space, an air outlet 14 is provided, which is described further below and which partially engages over a front panel 15, which visually closes off the plinth or the plinth setback region to the front, toward the front side V.
In the exemplary embodiment according to the drawing, the movable front door 3 is allocated in its upper region a front control panel 8 which extends in the transverse direction Q of the household dishwasher and which can comprise an engagement opening 7 that is accessible from the front side V so as to facilitate the manual opening and/or closing of the door 3. In the transverse direction Q, the household dishwasher often has an extent of 45, 50 or 60 centimeters. In the depth direction T from the front side V to the rear, the extent is also frequently about 60 centimeters. The values are not mandatory. Also, the household dishwasher 1 does not have to stand directly on a floor B such as, for example, of a kitchen room, but can also be installed approximately at eye level within a piece of kitchen furniture, so that the problem of drafts through an air outlet 14 mentioned at the beginning must then be given special attention. In a fully integrable household dishwasher, the front control panel 8 in the upper region of the front door is omitted and replaced by a control panel in the upper edge of the front door. Other arrangements of the control panel on and/or in the front door are also possible. If necessary, the control panel can be omitted altogether, for example if the operation of the household dishwasher can be controlled and/or monitored using a mobile communication device such as, for example, a smartphone.
When the door or flap 3 is in the closed position, the dishwasher cavity 2 is defined circumferentially by a total of three fixed vertical walls 13 and two horizontal walls 13, one of which forms a top (top) and another a bottom (bottom) of the dishwasher cavity 2. A left upright side wall 13 and a right upright side wall 13 adjoin the front side V, which faces the user, in the transverse direction Q toward the left and toward the right, respectively.
The wall that forms the bottom of the dishwasher cavity 2 and delimits it substantially downward lies approximately horizontally above the plinth 12, in other words parallel to an external floor B, in particular of a kitchen room, on which the household dishwasher 1 can stand. A higher installation, for example approximately at the height of a worktop, is also possible as mentioned, in particular within a cabinet unit. The lower edge of the household dishwasher 1 is then approximately 70 to 110 centimeters above the floor B in the installation position.
The household dishwasher 1 is provided with at least one air outlet 14 so as to discharge, in particular, moist air from the dishwasher interior of the dishwasher cavity 2. This air outlet 14 can discharge air, in particular moist air, from the dishwasher interior of the dishwasher cavity into the free air space on the front side V of the household dishwasher 1, said front side facing a user, so that the moist air is not carried inside a kitchen unit and could not cause damage there due to moisture. The, in particular, moist dishwasher interior air is discharged by means of the air outlet 14 preferably during the program-ending drying phase of a dishwashing program that is to be executed and/or during at least one additional drying phase of a subsequent “storage function phase”. In any case, the front door 3 remains closed.
The air outlet 14 is part of an air discharge unit 16, which is shown by way of example in
The air discharge unit 16 can be made entirely of plastic. Furthermore, the air outlet 14 can be divided into multiple mutually aligned sub-slots. These do not all have to be of the same length. It is important that a broadly extended air outlet 14 is created overall, which allows a high air throughput in order thus to also achieve a broad distribution of the moisture that is contained in the air.
The air outlet 14 is arranged here in the lower quarter of the appliance height and extends—as described—as a single-part or multi-part slotted outlet over at least two thirds of the width Q of the household dishwasher 1. In particular, the air outlet 14 is at least 40 centimeters wide (in particular in the case of a household dishwasher with an appliance width of 60 cm). It can also extend over almost the entire width Q of the household dishwasher 1.
As can be seen in
The air discharge unit 16 that comprises the air outlet 14 is held overall indirectly or directly on the front panel 15, which is attached to the front side V and visually closes off the front plinth setback region of the household dishwasher to the front. In the exemplary embodiment of
In this exemplary embodiment, the air discharge unit 16 preferably has an air pre-distributor 29 which, in its final assembly position, projects upward and extends in the width direction Q and the air discharge duct 18 of the, in particular slot-shaped, air outlet 14 that projects toward the front side is connected at the upper end of said air pre-distributor, and which has a connection 19, in particular at the rear (see
In particular, the air discharge unit 16, which comprises the air discharge duct 18, the air pre-distributor 29 and the connection 19 for the air supply line 20, is designed as one part or one piece, i.e. it forms a single component. This greatly simplifies its assembling/dismantling. Preferably, it is made of plastic, in particular by plastic injection molding.
The retaining connection between the air discharge unit 16, which comprises the air outlet 14, and the front panel 15 can be released when the front panel 15 is removed. Thus, even when the front panel 15 is opened, for example for maintenance purposes, for which the front panel 15 in particular is tilted forward and pulled out of the plinth setback space to the front, the air discharge unit 16 as a whole can be held together and does not have to be disassembled. This greatly facilitates handling when access to the plinth 12 is required and eliminates the possibility of errors, such as, for example, as a result of incorrect re-mounting.
For special simplification, the retaining connection between the air discharge unit 16, which comprises the air outlet 14, and the front panel 15 can be detached without the use of tools when the front panel 15 is dismantled, which makes the work particularly easy for the respective installer.
In the simplest case, which will be discussed in more detail below, the retaining connection between the air discharge unit 16, which comprises the air outlet 14, and the front panel 15 can be released simply by dismantling the front panel 15. It is then sufficient to pull away and/or rotate away the front panel 15 with a component toward the front side V, then the retaining connection to the air discharge unit 16 is also automatically released without a further work step.
Depending on the design, it is also possible to bring the retaining connection between the air discharge unit 16, which comprises the air outlet 14, and the front panel 15 into an engaged position by assembling the front panel 15 without the use of tools. Then it is sufficient for the connection to the air discharge unit 16 if the front panel is pushed or rotated back into its initial position on the appliance body. This is, of course, the simplest solution for an installer.
When the front panel 15 is dismantled—for example, for repair or maintenance purposes—the air outlet 14 having the air distribution 29 that supplies it and a rear connection 19 remain together as a common air discharge unit 16, regardless of the type of releasable retaining connection, and also a line (air supply line) 20 that supplies air and issues into the connection 19 and is designed in particular with excess length—in this exemplary embodiment (see
As can be seen, for example, in
The latching elements 23 can easily engage positively in corresponding undercuts on the air pre-distributor 29 and/or the air discharge duct 18 or act on the air discharge unit 16 only by frictional engagement. In the case of positive engagement, a clip connection which automatically engages as the front panel 15 is pushed on is created as a retaining connection between the air discharge unit 16 and the front panel 15. In order to release the latching elements 23 from the undercuts on the air pre-distributor 29 and/or air discharge duct 18, it is possible in particular to insert a tool 25 from the front of the protective frame 21, as shown in the rightmost partial figure of
A clip connection between the air discharge unit 16, which comprises the air outlet 14, and the front panel 15 is also shown in
In addition or alternatively, the retaining connection between the air discharge unit 16, which comprises the air outlet 14, and the front panel 15 can also comprise a magnetic connection and/or a Velcro connection—not illustrated here in each case.
As already mentioned above, the air outlet 14 having its air discharge duct 18 which extends broadly in the transverse direction Q but conducts the air in the direction of the front side V can engage over the front panel 15 that closes off the plinth 12 at the front and project at least the same distance toward the front side V with respect thereto. The plinth 12 can be set back by a few centimeters with its front-side facing front panel 15 relative to the door 3, nevertheless, wetting of the lower edge of the door 3 can be avoided by the forward facing component of the air discharging velocity. In addition, according to an advantageous further development, an upper guide, for example an upper wall, of the air outlet 14 at its air discharge duct 18 can be arranged in particular at a slight angle such that the air flowing out is discharged a few degrees downward into the room. Thus, the air does not flow out in a completely horizontal manner, but can be conveyed through the downward component under the door 3 without causing moisture damage there. The wide extent of the air outlet 14 prevents an annoying draft. With the downward component, the discharged air is carried a few centimeters in front of the appliance 1, and in particular by a direct path, i.e. unimpeded or without deflections, before an upward component becomes effective due to the fact that the discharged air is generally warmer than the surrounding room air. The downward component is between 2° and 10°, and a discharge angle of between 4° and 6° relative to the horizontal is particularly favorable in order to protect the door from moistening and at the same time to also prevent moisture from reaching the external floor B, such as, for example, a kitchen floor.
For this purpose, in particular, the air outlet 14 having its air discharge duct 18 is designed as a flat slotted outlet whose height-to-width ratio can preferably be between 1:20 and 1:200, preferably approximately equal to 1:100 (in particular in relation to a household dishwasher with a 60 cm appliance width). Then, in the case of a 40-centimeter-wide air outlet 14 (in particular in relation to a household dishwasher with a 60-cm appliance width), its height in the height direction H is in particular less than about 8 mm, preferably about equal to 4 mm. This ensures that on the one hand the air outlet 14 takes up little installation space in the height direction H, and on the other hand the total extent of the air outlet 14 is large enough to discharge a high volume and thus keep drafts very low.
It is possible so as to supply air to allocate at least one conveying element in or upstream of the connection to the air outlet 14 of the line 20 and said conveying element can also be activated in cycles, even over a period of several days.
Such a household dishwasher 1 can also easily be provided with a so-called “storage function”, which allows the items to be washed to remain in the dishwasher cavity 2 after processing without becoming damp again. Such processed items to be washed can remain in said household dishwasher for several days without the dryness of said items deteriorating. The household dishwasher 1 then also serves as a storage and drying cabinet from which the items to be washed can be removed fresh and dry.
For this purpose, the conveying element in particular can be activated in cycles. Alternatively, and particularly effectively, the conveying element is controlled in a closed-loop manner by a moisture sensor system that provides a measure of the current moisture of the items to be washed that are located in the dishwasher cavity.
In both cases, the conveying element is preferably switched on only now and then in order to repeatedly convey moist air out of the dishwasher cavity 2 and thus maintain the quality of the cleaning of the items to be washed over a longer period of time. Due to the only short effective running times, the energy requirement is low—as is the noise pollution caused by the at least one fan wheel or similar conveying element.
If necessary, however, it can also be advantageous if the conveying element is operated continuously with air that is to be discharged, in particular dishwasher interior air, during the drying phase of the respective dishwashing program and/or during the total duration of any subsequent “storage function phase” and/or any other operating phase of the household dishwasher.
| Number | Date | Country | Kind |
|---|---|---|---|
| 102020212345.4 | Sep 2020 | DE | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2021/076968 | 9/30/2021 | WO |
