Cooking appliance with two fluid channels below the muffle

Abstract

One aspect of the present application relates to a cooking appliance (1) having a housing (2), a muffle (3) arranged in the housing (2), which delimits a cooking chamber (4) of the cooking appliance (1), a door (7) movably arranged on the housing (2), which is provided for closing the cooking chamber (4), a fluid channel system (6) with which air (L) drawn into the cooking appliance (1) from the surroundings of the cooking appliance (1) can be guided and flows in the fluid channels of the fluid channel system (6) for cooling the door (7) and the housing (2), the fluid channel system (6) having, viewed in a height direction (x) of the cooking appliance (1), an inflow channel (8) in the housing (2) and below the muffle (3), through which the air (L) flows from the door (7) into the housing (2), the fluid channel system (6) having, viewed in a height direction (y) of the cooking appliance (1), an outflow channel (10) in the housing (2) and below the muffle (3) separate from the inflow channel (8), through which the air (L) flows from the housing (2), the inflow channel (8) and the outflow channel (10) being arranged one above the other, viewed in the height direction (y).

Description

Technical Field

[0001] One aspect of the invention relates to a cooking appliance having a housing and a muffle oven. The muffle oven is arranged within the housing. The cooking chamber of the cooking appliance is defined by the muffle oven. Furthermore, the cooking appliance has a door movably arranged on the housing. The door is configured to close the cooking chamber. The cooking appliance further has a fluid channel system that guides air drawn into the cooking appliance from its surroundings. The fluid channel system has fluid channels through which the drawn-in air flows to cool the door and the housing. Background Technology

[0002] This design is known in the prior art. For example, reference can be made to DE 10 2007 005 718A1 and DE 10 2011 006 075 A1 in this regard.

[0003] In known appliances, the design of fluid channel systems and comprehensive airflow guidance is limited, both for cooling components and for exhausting air from the cooking appliance. Summary of the Invention

[0004] The object of the present invention is to provide a cooking appliance in which the fluid channel system is improved in terms of guiding the airflow for cooling components and air exhaust from the cooking appliance.

[0005] This objective is achieved by a cooking utensil according to the present invention.

[0006] One aspect of the invention relates to a cooking appliance having a housing and a muffle oven. The muffle oven is arranged within the housing. The cooking chamber of the cooking appliance is defined by the muffle oven. The cooking appliance further has a door movably arranged on the housing. The door is configured to close the cooking chamber. Thus, the door is correspondingly positioned and constructed on the cooking appliance as intended. The cooking appliance also has a fluid channel system. Air introduced into the cooking appliance from its surroundings can be guided within the cooking appliance in a defined manner using the fluid channel system. The fluid channel system has fluid channels through which air flows to cool the door and the housing. Viewed in the height direction of the cooking appliance, the fluid channel system has an inflow channel within the housing and below the muffle oven. Air flows into the housing from the door in a defined manner through this specific inflow channel. Furthermore, viewed in the height direction of the cooking appliance, the fluid channel system has an outflow channel separate from the inflow channel within the housing and below the muffle oven. Air can be output from or out of the housing in a defined manner by means of the outflow channel.

[0007] This design of the fluid channel system in the cooking appliance allows for a flow pattern to be formed under the muffle oven. This flow pattern enables the flow of air from the door to the housing in a defined manner, thereby improving the cooling of the housing under the muffle oven. On the other hand, it also allows for the targeted outflow of unwanted air, or air to be discharged, from the housing under the muffle oven. Therefore, this advantageous flow pattern can be achieved in a compact design under the muffle oven. By constructing the two defined fluid channels of the fluid channel system consecutively and thus practically stacked in the height direction, a very compact cooking appliance can be achieved in the width direction. In particular, by stacking the defined fluid channels vertically, the flow pattern under the muffle oven can also be improved in terms of both a very short path and, especially, the introduction of air into the outflow channel. This particularly advantageously enables the complete discharge of unwanted air from the housing.

[0008] Therefore, this design is particularly advantageous in saving construction space for cooking appliances with standard dimensions in the width direction. Thus, it is possible to maintain such a standard width while still achieving the proposed improved flow scheme. In particular, this design is especially advantageous for cooking appliances with widths between 55cm and 60cm, particularly between 59cm and 61cm, and especially 60cm.

[0009] In one embodiment, the inflow channel is arranged above the outflow channel when viewed in the height direction of the cooking appliance. This particular overlapping arrangement of the fluid channels in the height direction advantageously prevents air discharged from the outflow channel from being undesirably drawn back in via the inflow channel.

[0010] In one embodiment, the inflow and outflow channels are separated from each other by a common partition wall, or a common boundary wall. This means that the partition wall is not only the boundary wall for the inflow channel but also the boundary wall for the outflow channel. In particular, the partition wall is single-layered. This design achieves close and direct stacking of fluid channels in the height direction. Therefore, the most compact structure possible in the height direction can also be provided. Furthermore, the number of components is reduced as a result.

[0011] In one embodiment, viewed in the depth direction of the cooking appliance, the inlet of the inflow channel is configured as the front end of the inflow channel. Therefore, viewed in the depth direction, this inlet forms the front termination of the inflow channel. This allows for a particularly advantageous coupling with the door, enabling air exhausted from the door to be directly introduced into the inflow channel below the muffle oven.

[0012] In one embodiment, the inlet of the inflow channel extends at least 70%, particularly at least 80%, and especially at least 90% of the width of the muffle oven measured in the width direction of the cooking appliance. In particular, these percentage width values ​​are relative to the housing configuration of the cooking appliance. This is another advantageous embodiment because it allows the inlet to be designed to be very wide. This allows air to be introduced comprehensively into the inflow channel. This results in particularly uniform flow within the inflow channel. Similarly, this width of the inflow channel also allows for the most uniform cooling effect possible across that width. This enables a particularly advantageous cooling effect.

[0013] In one embodiment, the inflow channel is constructed with this width over its entire depth as measured in the depth direction, as is achieved at the inlet. This also specifically means that the outlet of the inflow channel, located behind the inlet in the depth direction, also has a corresponding width. In one embodiment, the outlet of the inflow channel is the rear end of the inflow channel. This outlet thus forms the rear termination of the inflow channel.

[0014] In one embodiment, viewed in the depth direction of the cooking appliance, the outlet of the outflow channel forms the front end of the outflow channel. This outlet (from which air is to be discharged outwards, specifically to the outside of the housing) is therefore the front end or front side end of the outflow channel. In particular, this allows air to be discharged via the front side of the cooking appliance housing in a particularly targeted and defined manner. Specifically, the outlet is designed to allow the outflowing air to be blown downwards at an angle. This advantageously prevents air from being re-drawn in at the inlet of the inflow channel.

[0015] In one embodiment, the outlet of the outflow channel extends over at least 70%, particularly at least 80%, and particularly at least 90% of the width of the muffle oven. In particular, these width dimensions also apply with respect to the housing of the cooking appliance, especially the front side of the housing.

[0016] One advantage of this is that air can be completely and simultaneously discharged from the housing. Furthermore, it allows for a lower flow pressure as air exits the outlet channel, and therefore a less undesirable, larger forward flow from the housing compared to the relatively small outlet of the outlet channel.

[0017] In one embodiment, the inlet of the inflow channel and the outlet of the outflow channel are constructed on the front side of the housing. Therefore, the inlet and outlet are essentially openings of the fluid channels that are oriented forward or toward the front side of the housing. Thus, the fluid channels are open to the front.

[0018] In one embodiment, viewed in the width direction, the inlet of the inflow channel and the outlet of the outflow channel are arranged to overlap each other. In particular, they are arranged to overlap by at least 30%, at least 40%, at least 50%, at least 60%, at least 70%, at least 80%, and at least 90% in the width direction.

[0019] In one embodiment, viewed in the depth direction of the cooking appliance, the inlet of the inflow channel and the outlet of the outflow channel are located at the same depth. Therefore, a correspondingly compact structure can also be achieved in the depth direction. However, in another embodiment, the inlet of the inflow channel and the outlet of the outflow channel can also be staggered in the depth direction. For example, a staggered dimension of less than or equal to 5 cm can be achieved in the depth direction.

[0020] In one embodiment, the cooking appliance has a fan positioned below the muffle oven when viewed from the height of the appliance. This allows for particularly advantageous use of the structural space below the muffle oven. More importantly, it enables an advantageous delivery or flow scheme, allowing air to be drawn from the door into the housing by the fan and then expelled again in an improved manner through an outlet channel positioned in a defined manner. The fan's position is achieved close to the inlet and outlet channels below the muffle oven, thereby improving the desired inlet and outlet conditions.

[0021] In one embodiment, viewed in the depth direction of the cooking appliance, the fan is positioned behind the inlet of the outflow channel. In another embodiment, viewed in the height direction of the cooking appliance, the fan is positioned at the height of the inlet of the outflow channel. This allows for further improvement of the desired flow conditions, both in terms of drawing air from the door into the inflow channel and in terms of expelling or blowing air out via the outflow channel. This represents an improvement in fluid technology.

[0022] In one embodiment, viewed in the direction of airflow, the outlet channel below the muffle furnace is arranged in the positive pressure region of the fan. In another embodiment, viewed in the direction of airflow, the inlet channel below the muffle furnace is arranged in the negative pressure region of the fan.

[0023] In one embodiment, the fan is configured as a centrifugal fan. This allows for particularly favorable flow conditions, especially in the scheme explained above. This applies not only to drawing in air but also to blowing air out. In one embodiment, the fan is specifically configured as a BLDC (brushless DC) centrifugal fan. This means that the centrifugal fan has a brushless DC motor. Such a design enables a compact structure while still achieving increased airflow pressure, which can be generated as a result.

[0024] In particular, this design of the fan can also be advantageously implemented in the location of being disposed within the housing in one of the embodiments described above.

[0025] In one embodiment, the fluid channel system has additional inflow channels. These additional inflow channels have a first sub-region, positioned above the muffle oven in the height direction of the cooking appliance. In the depth direction, the first sub-region extends from front to back within the housing and above the muffle oven with respect to the intended flow direction of the air flowing therein. The additional inflow channel also has a second sub-region adjoining the first sub-region. The second sub-region opens directly onto the first sub-region. The second sub-region extends behind the muffle oven within the housing. In particular, the second sub-region extends entirely behind the muffle oven. In the height direction, the second sub-region extends downward within the housing. This is also with respect to the intended airflow direction set within the second sub-region. In one embodiment, the outlet of the second sub-region is fluidically coupled to the inlet of the outflow channel. In particular, an indirect coupling is provided here. Therefore, air flowing via this additional inflow channel, first above the muffle oven within the housing and then behind the muffle oven within the housing, can be directly guided into the outflow channel below the muffle oven.

[0026] The first sub-region of the other inflow channels has an inlet constructed on the front side of the housing above the muffle oven. Thus, in one embodiment, it is advantageously achieved that air flowing in the door and exiting from the door in the upper region can flow directly into the other inflow channels via this inlet. This enables a very efficient flow scheme in the upper region of the cooking appliance.

[0027] In one embodiment, the catalyst of the cooking appliance is arranged in a second sub-region of another inflow channel. The catalyst is thus spaced apart from the outflow channel. Therefore, on the one hand, it is possible to position other components, particularly the fan, in an adjacent manner within the outflow channel region. On the other hand, the separation of the catalyst from the outflow channel, especially in the rear region below the muffle oven, prevents contaminated air from adhering to electrical components, and particularly from condensing on them. Specifically, the catalyst can be deactivated in the eco-operation mode of the cooking appliance, while still preventing the accumulation of steam, dirt, and dust on the electrical components.

[0028] In another embodiment, the fluid channel system has an inflow channel in the door. The inflow channel in the door has multiple inlets. One inlet is specifically constructed on the upper edge of the door. At least one other inlet of the inflow channel, particularly two other inlets, is constructed on the side edges of the door. Thus, air is drawn comprehensively from the surroundings into the cooking appliance via the door. Therefore, this air extraction from the surroundings occurs only through the door. By this air extraction via the upper edge and side edges of the door, air can also reach the cooking appliance comprehensively. In particular, these specific intake locations also contribute to the top-to-bottom airflow pattern in the door and to an improved and more comprehensive inflow of air from the door into the housing. Thus, air can reach the cooking appliance particularly comprehensively and be distributed at multiple points simultaneously. This achieves an improved cooling scheme while still achieving an improved flow management scheme. In particular, the door is also cooled, especially initially.

[0029] In this embodiment, the outlet of the inflow channel in the door is fluidly coupled directly to the inlet of the inflow channel located below the muffle furnace in the housing. It can be specified that the outlet of the inflow channel in the door has a width that substantially corresponds to or is equal to the width of the inlet of the inflow channel below the muffle furnace in the housing.

[0030] In one embodiment, the door has only the three inlets of the inflow channel within the door. The proposed fluid channel system simplifies airflow behavior within the door and housing while achieving an improved and comprehensive flow scheme. In one embodiment, all fluid channels of the fluid channel system, except for the aforementioned outflow channel, can be arranged below the muffle oven in the negative pressure zone of the fan. Specifically, in this embodiment, only this one outflow channel is arranged below the muffle oven in the positive pressure zone of the fan, and this outflow channel also represents the sole outflow channel for the cooking appliance. With this design, very clean airflow through the fluid channel system can be achieved, both in the door and in the inflow channel within the housing. Furthermore, this scheme also ensures that no undesirable airflow leakage occurs in the door and housing.

[0031] The advantageous ventilation scheme of the door enables a flow pattern in which air flows virtually only from top to bottom within the door. Additional outlets of the inflow channels within the door are constructed in the upper region of the door. Specifically, in the vertical direction, these additional outlets are located at the same height as the inlets of other inflow channels within the housing, which are situated above the muffle furnace.

[0032] With the advantageous arrangement of two fluid channels below the muffle furnace in the casing, which, as explained above, are located on two levels, it is also possible to advantageously introduce air from the lower outlet of the inflow channel in the door into the outflow channel in the casing located below the muffle furnace. Viewed vertically, the outlet of the inflow channel in the door is arranged higher than the outlet on the front side of the outflow channel located below the muffle furnace in the casing. This prevents undesirable mixing of air escaping from the door and exhaust gas escaping from the front side of the outflow channel.

[0033] When an appliance is used and arranged as intended, its position and orientation are described by terms such as "above", "below", "front", "rear", "horizontal", "vertical", "depth", "width", and "height".

[0034] Other features of the invention are available from the accompanying drawings and description. Features and combinations thereof mentioned in the specification, as well as features and combinations thereof mentioned below in the description of the drawings and / or features and combinations thereof shown separately in the drawings, can be used not only in the respective described combinations but also in other combinations without departing from the scope of the invention. Therefore, embodiments of the invention not explicitly shown and explained in the drawings, which should be considered as included and disclosed, are derived and can be produced by individual combinations of features of the explained embodiments. Attached Figure Description

[0035] The embodiments of the present invention will be explained in more detail below with reference to the accompanying drawings. In the drawings:

[0036] Figure 1 A schematic vertical cross-sectional view of an embodiment of a cooking appliance according to the present invention is shown; and

[0037] Figure 2 A perspective vertical sectional view of an embodiment of a cooking appliance according to the invention is shown, in which a door removed from the housing is shown in order to better display the airflow.

[0038] The same or functionally identical elements in the accompanying drawings are given the same reference numerals. Detailed Implementation

[0039] Figure 1 The diagram illustrates one embodiment of cooking appliance 1. Cooking appliance 1 can be, for example, an oven, a steam cooker, or a microwave cooker. The cooking appliance can also be a combination appliance having at least two of the functions described above.

[0040] Cooking appliance 1 is constructed for cooking food. The cooking appliance has a housing 2. A muffle oven 3 is arranged within the housing 2. The muffle oven 3 defines the cooking chamber 4 with its walls. A gap 5 is formed between the muffle oven 3 and the housing 2. A heat-insulating material is introduced into this gap to insulate the muffle oven 3. Specifically, this heat-insulating material is directly arranged on the outer surface of the wall of the muffle oven 3.

[0041] In addition, the fluid channel component of the fluid channel system 6 of the cooking appliance 1 is arranged in the gap 5.

[0042] In addition, the cooking appliance 1 has a door 7. The door 7 is movably arranged on the housing 2. Figure 1 The display shows that door 7 is in the closed state.

[0043] The fluid channel system 6 has an inflow channel 8, which is entirely constructed within the housing 2. Viewed in the height direction (y-direction) of the cooking appliance 1, the inflow channel 8 is constructed below the muffle oven 3. Specifically, the inflow channel extends entirely below the muffle oven 3. This fluid channel of the fluid channel system 6 is the inflow channel 8. This means that air L outside the housing 2 can be introduced into the housing 2 via the inflow channel 8, or guided accordingly within the housing. The inflow channel 8 has an inlet 8a. The inlet 8a forms the front end of the inflow channel 8 in the depth direction (z-direction) of the cooking appliance 1. This end is constructed on the front side 9 of the housing 2. This end, or inlet 8a, faces the door 7. The inflow channel 8 also has an outlet 8b. In this embodiment, the outlet 8b represents the rear end of the inflow channel 8. Viewed in the height direction, the inlet 8a and outlet 8b are arranged below the muffle oven 3.

[0044] Furthermore, the fluid channel system 6 has an outlet channel 10 as a fluid channel. The outlet channel 10 is completely arranged within the housing 2. The outlet channel is arranged below the muffle furnace 3. In the height direction, the outlet channel 10 and the inlet channel 8 are arranged vertically stacked. In this respect, the outlet channel and the inlet channel are constructed and arranged on two different levels below the muffle furnace 3. In particular, the outlet channel 10 is arranged further downward than the inlet channel 8. The outlet channel 10 is configured to allow air L to be discharged from the housing 2. For this purpose, the outlet channel 10 has an outlet 10a. In the depth direction, the outlet 10a forms the front end of the outlet channel 10. This outlet is constructed on the front side 9 of the housing 2. When the door is closed, the outlet faces the door 7. In particular, the inlet 8a and the outlet 10a are constructed directly stacked vertically. In one embodiment, the inlet 10b of the outlet channel 10 forms the rear end of the outlet channel 10. In the height direction, the outlet 10a and the inlet 10b are arranged below the muffle furnace 3. They are also arranged below the inflow channel 8, especially below the inlet 8a and outlet 8b.

[0045] Inflow channel 8 and outflow channel 10 are directly adjacent to each other. A partition wall, or boundary wall 11, is provided for this purpose, specifically a single-layered one. The boundary wall limits inflow channel 8 downwards and outflow channel 10 upwards.

[0046] As can be seen, inflow channel 8 and outflow channel 10 are oriented parallel to each other.

[0047] Furthermore, the fluid channel system 6 has additional inflow channels 12 as fluid channels, which are constructed within the housing 2. In one embodiment, the inflow channel 12 has a first sub-region 13. Viewed in the height direction, the first sub-region is constructed entirely above the muffle furnace 3 within the housing 2. The first sub-region extends entirely above the muffle furnace 3. The first sub-region 13 has an inlet 13a constructed on the front side 9. This inlet faces the door 7. Additionally, the additional inflow channel 12 has a second sub-region 14. The second sub-region 14 terminates at an inlet located directly at the outlet of the first sub-region 13. Viewed in the depth direction, the second sub-region 14 extends entirely behind the muffle furnace 3 within the housing 2. The second sub-region 14 is vertically oriented and extends, in particular, over the entire height of the muffle furnace 3. In contrast, the first sub-region 13 is entirely horizontally oriented and extends over the entire depth of the muffle furnace 3. The outlet 14a of the second sub-region 14 is fluidically directly coupled to the inlet 10b of the outflow channel 10.

[0048] Furthermore, it can be seen that the cooking appliance 1 has a fan 15. The fan 15 is arranged in the housing 2. Viewed in the height direction, the fan is arranged below the muffle oven 3. In one embodiment, the fan 15 is arranged in the area of ​​the inlet 10b of the outflow channel 10. The fan 15 is in particular a centrifugal fan, preferably a BLDC centrifugal fan.

[0049] Furthermore, the cooking appliance 1 has a catalyst 16. The catalyst 16 is arranged in the housing 2. The catalyst is arranged behind the muffle furnace 3. In one embodiment, the catalyst is arranged in a second sub-region 14. The catalyst is arranged spaced apart from the outflow channel 10. Viewed in the height direction, the catalyst is arranged overlapping with the muffle furnace 3. In particular, viewed in the height direction, the catalyst is arranged upwardly offset not only relative to the inflow channel 8 but also relative to the outflow channel 10.

[0050] Furthermore, it can be seen that door 6 has an inflow channel 17 as a fluid channel for the fluid channel system 6. Air L is drawn into door 7 from around the cooking appliance 1 through the inflow channel 17. This is done by means of a fan 15.

[0051] As in Figure 2As can be seen in the perspective cross-sectional view, door 7 has an inlet 18 on its upper edge 7a for the inflow channel 17 of the door side. In one embodiment, door 7 has an inlet 18 on its opposite vertical door side edge 7b (at... Figure 1 and Figure 2 Due to the cross-sectional view, the opposite door side edges are not visible. Two additional inlets 19 are located on each of these inlets. When the fan 15 is activated, air L is also drawn into the door 7 from the surrounding area via these additional inlets. Therefore, air L is specifically drawn into the door 7 through three separate inlets 18 and 19. (As shown in the diagram...) Figure 2 As shown by the dashed line, the airflow in door 7 is entirely from top to bottom.

[0052] Furthermore, the inflow channel 17 has an upper outlet 20. In one embodiment, viewed in the height direction, the upper outlet 20 is at the same height as the inlet 13a of the first sub-region 13 of the other inflow channels 12 in the housing 2. Therefore, air L, such as Figure 1 and Figure 2 As shown, the water can flow directly from the outlet 20 of the gate 7 into other inflow channels 12.

[0053] In addition, door 7 has a lower exit 21, such as Figure 2 As shown. Through the lower outlet 21, air L is drawn directly from the door 7 into the inlet 8a of the inflow channel 8 in the housing 2.

[0054] Figure 2 The diagram also shows a gap 22 in which thermal insulation material is arranged outside the muffle furnace 3. This gap 22 is confined by other walls 23, such that the fluid passages of the fluid passage system 6 in the housing 2 toward the muffle furnace 3 are confined by these walls 23.

[0055] The cooking utensil 1 has a width of 60cm (measured in the width direction - x direction).

[0056] List of reference numerals

[0057] 1. Cooking utensils

[0058] 2. Shell

[0059] 3 Muffle furnace

[0060] 4. Cooking Room

[0061] 5 gaps

[0062] 6. Fluid Channel System

[0063] 7 doors

[0064] 7a Top edge of door

[0065] 7b Door side edge

[0066] 8. Inflow Channel

[0067] 8a Entrance

[0068] 8b Export

[0069] 9. Front side

[0070] 10 Outflow Channels

[0071] 10a Export

[0072] 10b entrance

[0073] 11 Boundary wall

[0074] 12 Inflow Channels

[0075] 13 First Subregion

[0076] 13a Entrance

[0077] 14 Second Subregion

[0078] 14a Export

[0079] 15 Fans

[0080] 16 Catalysts

[0081] 17 Inflow Channel

[0082] 18 Entrances

[0083] 19 Entrances

[0084] 20 Exports

[0085] 21 Exports

[0086] 22 gaps

[0087] 23 wall

[0088] x Width direction

[0089] y-axis (height direction)

[0090] z Depth direction

[0091] L air

Claims

1. A cooking appliance (1) having: a housing (2); a muffle (3) arranged in the housing (2), wherein, The cooking appliance (1) has a cooking chamber (4) delimited by the muffle (3); a door (7) is movably arranged on the housing (2), wherein the door (7) is provided for closing the cooking chamber (4); a fluid channel system (6) with which air (L) drawn in from the surroundings of the cooking appliance (1) into the cooking appliance (1) can be guided in a fluid channel of the fluid channel system (6) for cooling the door (7) and the housing (2), characterized in that the fluid channel system (6) has, viewed in the height direction (y) of the cooking appliance (1), an inflow channel (8) in the housing (2) and below the muffle (3), which inflow channel extends completely below the muffle (3), through which the air (L) flows from the door (7) into the housing (2), and, viewed in the height direction (y) of the cooking appliance (1), an outflow channel (10) in the housing (2) and below the muffle (3), separate from the inflow channel (8), which outflow channel extends completely below the muffle (3), through which the air (L) flows from the housing (2), wherein the inflow channel (8) and the outflow channel (10) are arranged one above the other, viewed in the height direction (y).

2. The cooking appliance (1) according to claim 1, characterized in that, The inflow channel (8) is arranged above the outflow channel (10).

3. The cooking appliance (1) according to claim 1 or 2, characterized in that, The inflow channel (8) and the outflow channel (10) are separated from one another by a common delimiting wall (11).

4. The cooking appliance (1) according to claim 1 or 2, characterized in that, Viewed in the depth direction (z) of the cooking appliance (1), the inlet of the inflow channel (8) forms a front end of the inflow channel (8).

5. The cooking appliance (1) according to claim 4, characterized in that, The inlet of the inflow channel (8) extends over at least 70% of the width of the muffle (3) measured in the width direction (x) of the cooking appliance (1).

6. The cooking appliance (1) according to claim 4, characterized in that, The inlet of the inflow channel (8) extends over at least 80% of the width of the muffle (3) measured in the width direction (x) of the cooking appliance (1).

7. The cooking appliance (1) according to claim 4, characterized in that, The inlet of the inflow channel (8) extends over at least 90% of the width of the muffle (3) measured in the width direction (x) of the cooking appliance (1).

8. The cooking appliance (1) according to claim 4, characterized in that, Viewed in the depth direction (z) of the cooking appliance (1), the outlet of the outflow channel (10) forms a front end of the outflow channel (10).

9. The cooking appliance (1) according to claim 8, characterized in that, The outlet of the outflow channel (10) extends over at least 70% of the width of the muffle (3) measured in the width direction (x) of the cooking appliance (1).

10. The cooking appliance (1) according to claim 8, characterized in that, The outlet of the outflow channel (10) extends over at least 80% of the width of the muffle (3) measured in the width direction (x) of the cooking appliance (1).

11. The cooking appliance (1) according to claim 8, characterized in that, The outlet of the outflow channel (10) extends over at least 90% of the width of the muffle (3) measured in the width direction (x) of the cooking appliance (1).

12. The cooking appliance (1) according to claim 8, characterized in that, Viewed in the depth direction (z), the inlet of the inflow channel (8) and the outlet of the outflow channel (10) are located at the same depth position.

13. The cooking appliance (1) according to claim 1 or 2, characterized in that, The cooking appliance (1) has a fan (15) which is arranged below the muffle (3) in the height direction (y).

14. The cooking appliance (1) according to claim 13, characterized in that, The fan (15) is completely arranged below the muffle (3) in the height direction (y).

15. The cooking appliance (1) according to claim 13, characterized in that, The fan (15) is arranged behind the inlet of the outflow channel (10) in the depth direction (z) and at the height of the inlet of the outflow channel (10) in the height direction (y).

16. The cooking appliance (1) according to claim 13, characterized in that, The outflow channel (10) is arranged in the positive pressure region of the fan (15) in the flow direction of the air (L), while the inflow channel (8) is arranged in the negative pressure region of the fan (15).

17. The cooking appliance (1) according to claim 13, characterized in that, The fan (15) is a BLDC centrifugal fan.

18. The cooking appliance (1) according to claim 1 or 2, characterized in that, The fluid channel system (6) has a further inflow channel (12) which has a first subregion (13) which extends in the height direction (y) above the muffle (3) from front to back in the housing (2) and a second subregion (14) which is located behind the muffle (3) in the depth direction (z) and extends from top to bottom in the housing (2), wherein the outlet of the second subregion (14) is fluidically coupled to the inlet of the outflow channel (10).

19. The cooking appliance (1) according to claim 18, characterized in that, A catalytic converter (16) of the cooking appliance (1) is arranged in the second subregion (14).

20. The cooking appliance (1) according to claim 1 or 2, characterized in that, The fluid channel system (6) has an inflow channel in the door (7) which has a plurality of inlets and an outlet which is fluidically coupled to the inlet of the inflow channel (8) below the muffle (3) in the housing (2).

21. The cooking appliance (1) according to claim 20, characterized in that, The inflow channel in the door (7) has a plurality of inlets on the door upper edge (7a) and on the door side edge (7b).

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