WO2016020375A1

WO2016020375A1 - Filtering of liquid in a cooking appliance

Info

Publication number: WO2016020375A1
Application number: PCT/EP2015/067947
Authority: WO
Inventors: Nicolas Chabut; Stéphane CLAUSS; Sebastien Flesch
Original assignee: BSH Hausgeräte GmbH
Priority date: 2014-08-08
Filing date: 2015-08-04
Publication date: 2016-02-11
Also published as: DE112015003687A5; CH711599B1

Abstract

The invention relates to a filter insert (1) for a filter container (F) of a cooking appliance (G), having a first filter (6), wherein the first filter (6) is channel-shaped and the side surface thereof is designed as at least one first filter element (7) and encloses an inner hollow chamber (9), a top cover element (2) having at least one upper opening (4) lies on an upper end face (10) of the first filter (6) and the at least one upper opening (4) is fluidically connected to the inner hollow chamber (9). A filter container according to the invention has a cup-like base shape having a top-side inlet opening (I), a floor (Bd) and a side wall (Sw) set on the floor, and furthermore a bottom drain opening (O1) in the floor which leads to a storage volume (S) that can be isolated, and a lateral drain opening (O2) in the side wall.

Description

Filtering liquid in a cooking appliance

The invention relates to a filter insert for a filter container of a cooking appliance with a first filter. The invention also relates to a filter container of a cooking appliance, which is set up for receiving a filter insert and has a cup-like basic shape with an upper-side inflow opening, a bottom and a peripheral side wall attached to the floor. The invention further relates to a cooking appliance, comprising a filter container arranged at a bottom of a cooking chamber, which can be connected to a drain of the cooking appliance and to a cleaning device of the cooking appliance. The invention is particularly advantageously applicable to steam ovens.

DE 10 2004 001 220 B3 discloses a cleaning arrangement for a cooking appliance, comprising a cooking chamber, with a cooking chamber inlet and a cooking chamber drain for at least one fluid, in particular comprising water, wash liquor, detergent, rinse aid and / or decalcifier, with a shut-off device arranged downstream of the cooking chamber drain, which has a first setting position, in which a fluidic connection of the cooking chamber outlet to a cooking appliance outlet can be produced, and a second setting position, in which a fluidic connection of the cooking chamber outlet to the cooking chamber inlet to form a substantially closed fluid circuit can be produced; and a method using this arrangement. It may be provided a filter and / or separation system, preferably in the fluid circuit. It may be provided that the filtering and / or separating system comprises at least one sieve, preferably in the cooking chamber drain, in particular in the bottom of the cooking chamber, and / or in the intake region of the pump. The filtering and / or separating system can comprise at least one sieve, preferably in the cooking chamber drain, in particular in the bottom of the cooking chamber, and / or in the intake region of the pump. The filtering and / or separating system may comprise at least one cyclone. The filtering and / or separating system may be self-cleaning. The cleaning arrangement may have a regulating and / or control device in operative connection with the shut-off device and / or the filtering and / or separating system. It is disadvantageous that the filter and / or separation system can easily clog and relatively expensive to clean only by a self-cleaning. It is the object of the present invention to overcome the disadvantages of the prior art, at least in part, and in particular to provide a particularly clogging, but effective possibility of filtering liquid in a cooking appliance, in particular in a steam oven.

This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.

The object is achieved by a filter insert for a filter container of a cooking appliance with a channel-shaped filter (hereinafter also referred to as "first" filter without restriction of generality) whose side surface is configured as at least a first filter element and whose side surface surrounds an inner cavity, wherein a first cover member (hereinafter also referred to as "upper" cover without limitation of generality) having at least one first passage opening (hereinafter also without limitation of generality also referred to as "upper" passage opening) on a first end face (hereinafter without limiting the generality also referred to as "upper" end face) of the first filter rests and the at least one upper passage opening is fluidly connected to the inner cavity.

Thus, a flow channel is provided which extends from the at least one upper passage opening through the inner cavity and thereby provides no filtering or only a rough restraint of large particles. Liquid can flow out of the inner cavity through its side wall (not just through the passageway). Thus, an unfiltered liquid can be provided on an outlet side of the flow channel and a filtered liquid can be provided next to the first filter element. While the filtered liquid can be filtered by means of the large side surface and thus in large quantities, larger particles can be removed through the passage channel without they clogging the first filter or the at least one first filter element. The filter element remains relatively clean and does not need to be cleaned frequently. By resting the upper cover on the upper end face (or an upper end edge) of the first filter a particularly compact arrangement is possible. In particular, the at least one upper through opening opens towards the upper end face. The at least one upper passage opening is in particular adapted to let through even larger particles which are not passed through the at least one first filter element.

The channel-shaped first filter may have a channel or tubular basic shape in that its side wall has a circumferentially closed shape and the upper open end face and a second open end face (hereinafter also referred to as "lower" end face without limitation of generality). The side wall has the at least one first filter element. Liquid may therefore enter through the upper end face into the inner cavity, flow through the inner cavity and escape unfiltered through the lower end face again. Also, particles that can not pass through the at least one first filter element may be entrained or sink through the inner cavity. The inner cavity thus provides the possibility of providing an unfiltered fluidic connection between the upper end face and the lower end face. Liquid may alternatively or additionally enter through the upper end face in the inner cavity and then filtered through the at least one first filter element emerge. It is a development that the cooking appliance is a water-bearing cooking appliance, which provides water as the liquid, possibly with additives such as detergents, etc.

It is a development that the upper cover protrudes laterally circumferentially beyond the first filter. Thus, a sufficiently large space for filtered liquid can be provided by simple means, while the upper cover element can seal the filter container on the edge so far that a parasitic by-pass of unfiltered liquid in this room can be strongly suppressed or even prevented. The upper cover may like this edge have a seal. It is a further development that the filter insert is provided for operation in a position in which the channel-shaped first filter, in particular its inner cavity, at least substantially aligned vertically. In particular, an exactly vertical orientation and an orientation with an angle of inclination of, for example, up to 22.5 °, in particular, may include an at least substantially vertical orientation. in particular of up to 10 °, in particular of up to 5 °. Thus, particles can float freely through the open cavity without settling on at least one first filter element. It is an embodiment that the upper cover is liquid impermeable except for the at least one upper passage opening.

It is an alternative embodiment that the upper cover is formed as a second filter with at least one second filter element and at least a portion of the at least one second filter element is disposed fluidly adjacent to the at least one first filter element. This provides the advantage that a filter performance of the filter cartridge is increased. The fact that at least a part of the at least one second filter element is arranged fluidly adjacent to the at least one first filter element comprises, in particular, an arrangement in which fluid flowing through this part of the second filter element, then filtered, reaches a volume outside the first filter element. Thus, a double filtering can be avoided, which would reduce the filter throughput. In particular, the liquid filtered by the first filter and the second filter may flow together, in particular into a common space or into a common volume.

It is still an embodiment that the second filter has a plate-like or disk-like basic shape. Such a filter is particularly easy to produce and allows a particularly compact design. However, for example, the second filter may also be curved, e.g., cupped.

It is a further embodiment that the at least one upper passage opening is arranged centrally in the upper cover element, in particular the at least one second filter, in particular centrally in the at least one second filter element. Thus, a direction-independent arrangement of the filter insert can be facilitated.

It is still a development that the at least one first and / or the at least one second filter element are adapted to retain solids from the liquid. The at least one first and / or the at least one second filter element may be designed as at least one sieve, for example a metal sieve, which allows a particularly long service life and easy cleanability.

The at least one first filter element and the at least one second filter element may have the same or different filter properties. By way of example, a filter property may be understood to mean a retained minimum particle size, a throughput capacity and / or a filter efficiency.

The at least one first and / or second filter element may each be formed as a single filter element or as a plurality of filter elements. The plurality of filter elements may be held by a support structure such as a support frame, for example. If several filter elements are present, these can also be referred to as filter segments. It is yet a further embodiment that the filter insert has a second cover element (hereinafter also referred to as "lower" cover without restriction of generality), in which at least one second passage opening (hereinafter also referred to as "lower" passage opening without limiting the generality ), which lower passage opening is fluidically connected to the inner cavity. The lower cover member allows for mechanical fixation of the first filter, provision of a foot, and simple and robust mechanical positioning in the filter container. The lower cover is arranged in particular on the lower end face. It is a further development that the lower cover member rests on the first filter so that the at least one lower passage opening opens to the lower end face of the first filter, in particular when the upper cover member rests on the upper end face. The lower cover element may be impermeable to liquid in order to reduce unwanted liquid secondary flows except for the at least one lower passage opening.

It is a development that the lower cover member has a plate-like or disk-like basic shape. Such a lower cover element is particularly simple. adjustable and allows a particularly compact design. However, the lower cover may for example be curved, for example, cup-shaped curved.

It is furthermore an embodiment that the at least one first filter element has a cross-sectional shape that changes its curvature direction several times in the circumferential direction. Thus, a filter surface larger than a circular or oval cross-sectional shape, which always has the same direction of curvature, and thus an even lower tendency to clog and a higher throughput can be provided. The repeatedly changing direction of curvature may be implemented, for example, by a wavy cross-sectional shape or a cross-sectional shape bent several times in different directions. In particular, the cross-sectional shape may be a star shape with straight neighbor sections that are inclined towards one another.

It is also an embodiment that the at least one upper passage opening is covered by a coarse grid. Thus, particularly large particles which could possibly settle in the inner cavity of the first filter can be retained.

It is a further development that at least one handle device for simplified handling, in particular gripping, of the filter insert is present on the filter insert, in particular on the second filter, e.g. one or more upright tabs.

It is a further development that the filter insert, in particular the lower cover element, has at least one fastening device for fastening in the filter container. The at least one fastening device may, for example, have one or more projections and / or recesses for producing a latching connection or a plug-in / rotary connection with the filter container. Additionally or alternatively, the attachment means may comprise one or more spring elements, e.g. for producing a releasable latching connection, in particular clip connection, with the filter container. The filter insert may also be screwed into or with the filter container.

The object is also achieved by a filter container of a cooking appliance, which is adapted for receiving a filter cartridge as described above and a cup-like basic shape with an upper-side insertion opening, a bottom and an comprising a circumferential side wall which adjoins the bottom, the filter container comprising: a first drainage opening (hereinafter also referred to as "lower" drainage opening in the bottom) which leads to a lockable storage volume and a second drainage wall provided in the side wall. (hereinafter also referred to as "lateral" discharge without restriction of generality). The lateral drain opening may in particular be fluidically connected to the at least one first filter element and, if present, to the part of the at least one second filter element arranged next to the first filter element. The filter container can be configured analogously to the filter insert and has the same advantages.

Such a filter container has the advantage that larger particles which strike the filter insert and then descend through the passage channel can pass through the lower discharge opening into the lockable storage volume and can be stored or stored there. The storage volume thus serves as a particle trap from which these particles can advantageously no longer get back into the filter container. By unlocking or opening the storage volume, the particles deposited therein can be removed from the filter container. Consequently, the filter container and the filter insert are not or only to a small extent covered or clogged by larger particles.

From the side drain opening, the liquid filtered through the filter cartridge can be drained, e.g. be sucked, for example, for use as a use liquid. In this case, the side wall of the filter container, possibly together with the next to the first filter arranged part of the second filter element, with the side surface of the first filter and with the bottom of the filter container or with the lower cover of the filter element a space, a volume or Reservoir for the filtered liquid. The filter container may also be referred to as a "filter receptacle".

It is a further development that the filter insert is at least substantially aligned vertically when used in the filter container. It is an embodiment that the filter insert in the filter container by means of a plug / turn connection can be fastened. Thus, a secure fit with easy usability and removability of the filter insert can be combined. The plug / turn connection may be a kind of a bayonet connection, for example.

It is an alternative development that the filter cartridge is durable in the filter container by means of a clamping connection of a releasable latching connection (e.g., by clipping) or by its weight alone. The object is also achieved by a cooking appliance, comprising a arranged at a bottom of a cooking chamber filter container as described above, in which a filter cartridge can be used as described above. The cooking appliance can be designed to be analogous to the filter container and to the filter insert and has the same advantages.

The cooking appliance as a water-conducting cooking appliance may in particular be a steam-generating cooking appliance, e.g. a steam oven.

It is a development that the cooking appliance is a household appliance, in particular a kitchen appliance, e.g. in the sense of so-called "white goods" for private households. The cooking appliance may be a household appliance.

It is an embodiment that a drain of the cooking appliance with the lockable storage volume and the lateral drain opening with at least one Flüssigkeitsnutzeinrich- the cooking appliance are fluidly connected, in particular alternately. The contents of the storage volume, including the particles deposited there, can thus be conveyed into an emptying removal container of the cooking appliance or removed from the cooking appliance. The liquid utility may reuse the filtered water in the cooking appliance.

It is a further development that the liquid utilization device is a cleaning device. This may, for example, be a cooking chamber cleaning device by means of which a wall or walls of the cooking chamber (possibly including a door) can be cleaned, for example a spraying device, for example comprising one or more spray nozzles. Consequently, can the cooking chamber to be sprayed with filtered through the filter cartridge liquid. The spraying device may in particular be arranged on a ceiling of the cooking chamber.

It is a development that the lateral drain opening with the Flüssigkeitsnutzeinrich- device, in particular cleaning device is connected via a pump. Thus, pressurized liquid can be provided to the liquid utility device.

In particular, the filter cartridge may form part of an at least predominantly closed fluid circuit. The liquid circuit may, for example, fluid (in particular water) filtered from the filter container through the side drain opening of the filter container, through the pump, through the cleaning device, onto the walls of the cooking chamber, then flowing down to the bottom and bottom to the filter container circulate. For example, such a liquid circuit may be operated within the framework of a cleaning program of the cooking appliance, if appropriate with the addition of cleaning agent, descaling agent or the like. During the circulation of the liquid in the liquid circuit, the storage volume is preferably shut off. With the completion of the liquid circuit, liquid still draining from the walls of the cooking chamber collects and at least dissolves at least part of the coarse and fine particles resting on the upper cover element, in particular the second filter. Now, if the storage volume is opened, the liquid flows from it and withdraws the standing in the filter container and the water above the filter cartridge, especially by the non-filtering flow channel. The resulting flow is sufficient to draw floating particles through the flow channel. The flow may also be sufficient to at least partially entrain particles located on the inside of the first filter.

It is also an embodiment that the pump is fluid-permeable in an inactive state. As a result, when the pump is stopped, previously filtered fluid can flow back through the pump, for example liquid located in a fluid line. This back-flowing liquid presses into the space or reservoir for the filtered liquid and thus against the part of the second filter element (if present) arranged next to the first filter, and against the first filter element, in opposite directions. set direction compared to a filter function. Thus, adhering to these filter areas particles can be solved. These particles can either sink in the direction of the storage volume or be pulled there due to the flow when the storage volume is open. The pump may in particular be switched off before or with an opening of the storage volume.

The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following schematic description of an embodiment which will be described in more detail in conjunction with the drawings.

1 shows a sectional view in side view of an inventive

cooking appliance;

2 shows an oblique view of a filter element for the cooking appliance; and

3 shows a sectional view in an oblique view of a section of the

Cooking device in a region of a filter container with inserted filter insert.

1 shows a water-conducting cooking appliance in the form of a steam oven D. The steam oven D has a cooking chamber G which is surrounded by a cooking chamber wall in the form of a oven muffle M. The cooking chamber G has a feed opening W on the front side, which can be closed by means of an oven door T. The cooking chamber G can be heated by means of at least one heating element (for example a top heat radiator, bottom heating radiator and / or a heating air radiator, not shown). The cooking chamber G can also be acted upon by steam, for example by means of a steam generator arranged outside the oven muffle M, by means of an atomizer, etc. (not shown).

A bottom B of the oven muff M has a recess on which a filter container F is arranged. The filter container F is designed to receive a filter insert 1. Liquid L present on the bottom B flows into the filter container F. The filter container F is cup-shaped with an upper-side inflow opening I opening into the cooking chamber G, a bottom Bd having a first, lower discharge opening O1 there and a bottom Bd in the direction of the influence opening I extending side wall Sw. In the side wall Sw a second, lateral drain opening 02 is present, which leads via a first liquid line R1 to a suction side of a pump P whose pressure side leads via a second liquid line R2 to a arranged on a cover Dk the oven muffle M spraying. The spraying device A serves to spray the liquid L under pressure on the oven muffle M and an inside of the oven door T in order to clean it. The spraying device A thus represents a cleaning device.

The lower discharge opening 01 leads into a storage volume S arranged underneath, which can be shut off via a valve V. The valve V may be connected downstream to an outlet Af of the steam oven. The drain Af may lead directly out of the steam oven D or may lead into a removal tank (not shown) of the steam oven. The heating elements, the steam generating device, the pump P and the valve V can be actuated or activated by means of a control device C. The control device C may, for example, control a cleaning process for cleaning the oven muffle M and possibly the oven door T. Without consideration of the filter insert F inserted into the filter container 1, for example, at the beginning of a cleaning procedure, first of all cleaning agents could be applied to the bottom B of the cooking chamber and then liquid L, eg in the form of fresh water, could be added. At least part of the liquid L in the form of water mixed with the cleaning agent flows into the liquid container F and into the storage volume S. The valve V blocks, so that the liquid L there initially can no longer flow away. Subsequently, the pump P can be activated, which sucks the liquid L through the lateral discharge opening 02 from the filter tank F and presses to the spraying device A. The spraying device A generates one or more cleaning jets, in particular spray jets, in order to clean off the oven muffle M and optionally the oven door T. For example, it may have one or more nozzles. The liquid L then added with cleaned particles passes from the oven muffle M and possibly the oven door T down to the bottom B and from there back to the filter container F. This liquid circuit is indicated by the open arrows. Without inserted filter or filter cartridge 1 can the cleaned-off particles impair the operation of the pump P and / or block the spraying device A.

If the actual cleaning process is completed, the pump P can be stopped, for example. Since the pump P is fluid-permeable in a stopped or inactive state, the liquid L in the lines R1 and R2 and in the pump P flows back in the direction of the filter container F.

The following unlocking of the valve V, the liquid L can be drained.

2 shows an oblique view of the filter cartridge. 1 It has a first 'upper' cover element in the form of a circular disk-shaped second filter 2. The second filter 2 consists of a circular disk-shaped second filter element 3, in which centrally a circular upper passage opening 4 has. A web 5 crosses the upper passage opening 4 and serves as a coarse grid for keeping particularly large particles.

The filter element 1 further comprises a tubular or rectilinear channel-shaped first filter 6, the first filter element 7 (as the only component) has a rotationally symmetrical, star-shaped and closed about its longitudinal axis circumferential cross-sectional shape Q, as indicated by the dotted line. The cross-sectional shape Q thus changes its direction of curvature in the circumferential direction about a longitudinal axis several times, wherein adjacent straight sections are connected to one another via bending or bending lines. The first filter element 7 is connected at its outer tips 8 to the second filter element 3.

The first filter element 7 surrounds as a side wall or side surface an elongate inner cavity 9, which is covered at its first, upper end face 10 by a small part of the second filter element 3 and by the upper passage opening 4. The upper passage opening 4 opens to the upper end face 10 of the first filter element 7, so that the inner cavity 9 is fluidically connected via the upper end face 10 with the upper passage opening 4.

Thus, while a small part of the second filter element 3 is located within the upper end face 10, by far the largest part 11 of the second filter element 3 lies laterally. borrowed outside and thus fluidly adjacent to the upper end face 10 and fluidly adjacent to the first filter element 7.

A second, lower end face 12 of the first filter element 7 is covered by a second, lower cover element 13 with a circular disk-like basic shape, which also serves as a foot of the filter insert 1. The lower cover member 13 has centrally a lower passage opening 14, which opens into the lower end face 12 and is otherwise for the liquid L, for. impermeable. The inner cavity 9 connects the upper passage opening 4 with the second passage opening 14 fluidly.

For fastening the filter insert 1 in the filter container F, the second filter 2 has on the edge side two upright tabs 15 as handling means, e.g. for turning and pulling the filter element 1. The lower cover member 13 has two peripheral recesses 16, e.g. for the implementation of a plug-in / turn-lock with the filter container B.

The second filter 2 may have a seal 17 at the edge.

3 shows a sectional view in an oblique view of a section of the steam oven D in a region of the filter container F, in which now the filter element 1 is inserted. The filter container F is made in two parts with a first part Fa and a second part Fb. The second part Fb is inserted into the first part Fa, e.g. screwed with it, and sealed by a circumferential ring seal Di to avoid parasitic side streams of liquid L. The two-part construction simplifies the manufacture and installation of the filter container F.

The second filter 2 of the filter insert 1 largely closes the inflow opening I of the filter container F so that liquid can flow only through the second filter 2 and not between the second filter 2 and the filter container F. The filter insert 1 is connected by means of a plug / Rotary connection, in particular a bayonet closure, in the filter container F attached.

The side wall Sw of the filter container F, together with the part 1 1 of the second filter element 3 arranged next to the first filter 6, with the first filter element 7 and with the lower cover member 13 is a space Z for filtered liquid F is. If the pump P for a cleaning operation in operation, which is formed here in the form of a siphon memory reservoir S filled with the liquid L. The liquid L therefore flows essentially through either the part 1 1 of the second filter element 3 adjacent to the first filter 6 or through the inner cavity 9 and through the first filter element 7 into the space Z. From there, the liquid L thus filtered becomes sucked through the lateral drain opening 02 and the first liquid line R1 to the pump P. The sprayer A can not clog so. Larger particles located in the liquid L are drawn into the inner cavity 9 by the suction of the liquid L and float there, if they are heavier than the liquid L, through the lower passage opening 14 and lower drain opening 01 into the storage reservoir S, which also serves as a storage space or serves as a rest zone for the floated particles. The lower drain opening 01 is thus downstream of the lower passage opening 14 fluidly. Lighter particles float in the region of the inner cavity 9 or above it.

When the pump P is switched off, filtered liquid L pushes back into the space Z and then flows back against the (maintained during operation of the pump P) filter direction through the part 1 1 of the second filter element 3 and through the first filter element 7 back. In this case, 1 1 and 7 retained by this filter areas fine particles are dissolved. With the following opening of the valve V, the liquid L now flows essentially through the inner cavity 9 and through the storage reservoir S. The associated flow entrains both larger particles deposited in the storage reservoir S and larger particles suspended in the flow. In addition, the recently detached fine particles are taken and removed. The pump P and the valve V can thus be controlled so that the filter vessel F fluidly alternately with an outflow of the steam oven D or with a cleaning device, namely the spray A of the steam oven D is connectable.

Of course, the present invention is not limited to the embodiment shown. Generally, "on", "an", etc. may be taken to mean a singular or a plurality, in particular in the sense of "at least one" or "one or more", etc., as long as this is not explicitly excluded, eg by the expression "exactly a ", etc. Also, a number can include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.

LIST OF REFERENCE NUMBERS

1 filter element

2 second filter

3 Second filter element

4 Upper opening

5 footbridge

6 First filter

7 First filter element

8 tip

9 cavity

10 Upper face

1 1 part of the second filter element

12 Lower face

13 Lower cover element

14 Lower passage opening

15 tab

16 edge recess

17 seal

A spraying device

Af outflow

B floor

Bd floor

C control device

D steam oven

Di ring seal

Dk blanket

F filter container

Fa first part

Fb second part

G cooking space

I influence opening

L liquid

M oven with el 01 First drain opening

02 second drain opening

P pump

Q cross-sectional shape

R1 first fluid line

R2 second fluid line

S storage volume

Sw sidewall

T oven door

V valve

w Feed opening z Room

Claims

Filter insert (1) for a filter container (F) of a cooking appliance (G) with a first

Filter (6), characterized in that

the first filter (6) is channel-shaped and its side surface is configured as at least one first filter element (7) and surrounds an inner cavity (9), and

an upper cover element (2) with at least one upper passage opening (4) rests on an upper end face (10) of the first filter (6) and the at least one upper passage opening (4) is fluidically connected to the inner cavity (9).

Filter insert (1) according to claim 1, characterized in that

the upper cover element (2) is designed as a second filter (2) with at least one second filter element (3) and

at least a part (1 1) of the at least one second filter element (3) is arranged fluidly next to the at least one first filter element (7).

Filter insert (1) according to one of the preceding claims, characterized in that the filter insert (1) has a lower cover element (13), in which at least one lower passage opening (14) is introduced, which is fluidically connected to the inner cavity (9) ,

Filter insert (1) according to one of the preceding claims, characterized in that the at least one first filter element (7) has a cross-sectional shape (Q) which changes its curvature direction several times in the circumferential direction.

Filter insert (1) according to one of the preceding claims, characterized in that the at least one upper passage opening (4) is covered by a coarse grid (5). Filter insert (1) according to one of the preceding claims, characterized in that the upper cover element (2) has a disc-like basic shape and the at least one upper passage opening (4) is arranged centrally in the upper cover element (2).

Filter container (F) of a cooking appliance (D), which is adapted to receive a filter insert (1) according to one of the preceding claims and a cup-like basic shape with an upper-side influence opening (I), a bottom (Bd) and one at the bottom (Bd) having adjoining circumferential side wall (Sw), characterized in that the filter container (F) comprises:

a lower drain opening (01) present in the floor (Bd) leading to a lockable storage volume (S), and

one in the side wall (Sw) existing lateral drain opening (02).

Filter container (F) according to claim 7, characterized in that the filter insert (1) in the filter container (F) by means of a plug-in / rotary connection can be fastened.

Cooking appliance (D), comprising a at a bottom (B) of a cooking chamber (G) arranged filter container (F), which is connectable to a drain of the cooking appliance (G) and with a cleaning device (A) of the cooking appliance (D), characterized in that the outflow with the storage volume (S) and the lateral discharge opening (02) can be fluidically connected to the cleaning device (A).

Cooking appliance (D) according to claim 9, characterized in that the cooking appliance (D) is a steam oven and the cleaning device (A) a spraying device for spraying a wall (M, B, Dk, T) of the cooking chamber (G) with through the filter cartridge (1) filtered liquid (L).

Cooking appliance according to one of claims 9 or 10, characterized in that the lateral discharge opening (02) with the cleaning device (A) via a pump (P) is connectable and the pump (P) is fluid-permeable in an inactive state.