Cooking appliance with hot air system and specifically shaped cooking chamber partition in the front wall area of the hot air system
By designing uneven airflow guiding structures, such as concave cavities and flow ramps, in the cooking appliance, the problem of air accumulation in the cooking chamber partition and hot air system is solved, achieving smooth flow of hot air and improving cooking efficiency.
Patent Information
- Application Number
- CN202180077878.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-11-12
- Filing Date
- 2021-11-17
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2041-11-17
AI Technical Summary
In existing cooking appliances, the positioning of the cooking chamber partition and the hot air system causes air to accumulate, affecting cooking results and efficiency.
In cooking appliances, uneven airflow structures, such as concave cavities and flow ramps, are designed to guide hot air, prevent it from accumulating, and ensure smooth airflow.
It effectively prevents hot air from accumulating at the junction of the cooking chamber partition and the front wall, improves airflow efficiency, and ensures that the cooking process is not affected by unwanted hot air.
Smart Images

Figure CN116635671B_ABST
Abstract
Description
Technical Field
[0001] One aspect of the invention relates to a cooking appliance having a housing and a muffle oven. The housing can also be referred to as an outer shell. The muffle oven is a separate component from the housing. The muffle oven is arranged within the housing. The walls of the muffle oven define the cooking chamber of the cooking appliance. The cooking appliance further includes a hot air system. The hot air system has a front wall. This front wall is arranged within the cooking chamber, thereby forming a receiving space for components of the hot air system between the rear wall of the muffle oven and this front wall, which is particularly biased forward when viewed along the depth direction of the cooking appliance relative to the rear wall. The front wall has air vents through which hot air can be guided from this receiving space into the cooking chamber. The cooking appliance further includes a cooking chamber partition. This cooking chamber partition is a separate component. The cooking chamber partition is particularly constructed as a plate. It can be reversibly removed from and reintroduced into the cooking chamber. In its final position after being reintroduced into the cooking chamber, the cooking chamber is divided by this cooking chamber partition into a first cooking chamber area and a second cooking chamber area. Background Technology
[0002] Such cooking appliances are known in the prior art. Here, the cooking chamber partitions can be arranged in the cooking chamber at a relatively large distance from the front wall. However, this limits the division of the cooking chamber area, and the positioning of the hot air system relative to the cooking chamber partitions requires corresponding space. Therefore, on the one hand, it is necessary to design the front wall to be smaller, or on the other hand, the cooking chamber partitions should be positioned at a relatively large distance from the front wall.
[0003] In other cooking appliances, the cooking chamber divider can also be positioned relatively close to the front wall in its final position. However, here, a disadvantage arises when the upper part of such a cooking chamber divider is flat: the air vent may be almost entirely covered by the adjacent surface area of the divider, making it difficult for air to escape from such vents. Air can accumulate, especially at this junction. This can cause air to reach or be forced into cooking chamber areas where hot air is not intended to be introduced via the hot air system. Summary of the Invention
[0004] The objective of this invention is to provide a cooking appliance in which such air buildup is better prevented when the cooking chamber partition is positioned adjacent to the hot air system.
[0005] One aspect of the invention relates to a cooking appliance having a housing and a muffle oven. The housing can also be referred to as an outer shell. The muffle oven is a separate component from the housing. The muffle oven is arranged within the housing. The walls of the muffle oven define the cooking chamber of the cooking appliance. The cooking appliance further has a hot air system. The hot air system has a front wall. This front wall is arranged in the cooking chamber, thereby forming a receiving space for components of the hot air system between the rear wall of the muffle oven and this front wall, which is particularly biased forward when viewed along the depth direction of the cooking appliance relative to the rear wall. The front wall has air vents through which hot air generated by the hot air system can be guided from this receiving space into the cooking chamber by the hot air system. The cooking appliance further has a cooking chamber partition. This cooking chamber partition is a separate component. The cooking chamber partition is particularly constructed as a plate. It can be reversibly removed from and reintroduced into the cooking chamber. In its final position where the cooking chamber partition is introduced into the cooking chamber, the cooking chamber is divided by the cooking chamber partition into a first cooking chamber area and a second cooking chamber area separate therefrom.
[0006] Viewed along the depth direction of the cooking appliance, the cooking chamber partition is arranged to overlap with the front wall, particularly in its final position. Alternatively, viewed along the height direction of the cooking appliance, the cooking chamber partition is also arranged to overlap with the front wall in its final position. On the side of the cooking chamber partition facing the front wall, an uneven flow-guiding structure is constructed in the edge region adjacent to the front wall. This flow-guiding structure is constructed and conventionally configured to deflect hot air entering the cooking chamber through air vents located in the front wall and air flowing onto the cooking chamber partition towards the cooking chamber area to which hot air is to be supplied. Therefore, when the cooking chamber partition and the front wall are arranged directly adjacent to each other, this uneven flow-guiding structure now achieves improved flow characteristics of the hot air exiting through the air vents. This is because, although the cooking chamber partition and the front wall are arranged directly adjacent to each other at this junction, this uneven flow-guiding structure allows the hot air to be deflected towards the cooking chamber area to which hot air is to be supplied in a non-accumulating manner. In other words, a corresponding air space or volume space is provided, in which the undesirable accumulation of hot air is better avoided. Specifically, this uneven airflow structure, particularly at this junction, expands the volume space compared to the adjacent zone between the cooking compartment partition and the front wall, improving the entry of hot air from the air vents into this volume space, or, by reducing air accumulation, enabling the immediate and improved export of this hot air from this expanded air space to the other cooking compartment. This is also supported by the airflow structure, which improves the outflow of this entering hot air to the other cooking compartment. This also prevents the hot air entering from the air vents at this junction between the cooking compartment partition and the front wall from accumulating, thus improving the prevention of such accumulated air being forced into the other cooking compartment area. Therefore, it particularly improves the prevention of air relatedly accumulating at this junction on the cooking compartment partition from being forced into the other cooking compartment area via the edge region of the cooking compartment partition.
[0007] This allows for a better understanding of how, when the hot air system is in operation, unintended entry of hot air into other cooking chamber areas is prevented in an improved manner, so that the cooking process in those other cooking chamber areas, especially where cooking is also taking place, is not affected by the unintended entry of hot air.
[0008] In one embodiment, the airflow guiding structure has at least locally, in particular, groove-like cavities in the edge region. These cavities are constructed on the facing side, creating an enlarged airflow space or associated enlarged volume space between the front wall and the facing side. Thus, through this cavity, the sub-region of the facing side of the cooking compartment partition, directly opposite the front wall, is constructed further spaced from the front wall by this cavity, thereby forming this enlarged airflow space. This specific geometry of the facing side, located in the direct junction region facing the front wall, enables the aforementioned advantages to be achieved to a particularly large extent. Furthermore, this geometry of the airflow guiding structure is both very simple and particularly advantageous in terms of flow characteristics; on the other hand, this design of the upper or facing side of the cooking compartment partition with cavities is also readily achievable in terms of manufacturing technology.
[0009] The cavity has a boundary wall. This boundary wall is at least partially curved. Viewed in a cross-section perpendicular to the longitudinal axis of the cavity, the boundary wall is particularly concave, especially within at least 70%, and particularly at least 80%, of its length between the upper edges of the cavity. Therefore, the boundary wall bulges away from the front wall. This advantageously creates an enlarged volumetric space between the front wall and this boundary wall of the cavity. Air entering this volumetric space, especially the enlarged airflow space, then impacts this particularly continuously curved boundary wall, thereby enabling continued delivery in a particularly uniform and non-agglomerated manner. Viewed in cross-section, the boundary wall is particularly without sharp edges. Viewed in cross-section, the boundary wall of the cavity has no wall sections parallel to the front wall. Viewed in cross-section, the front wall particularly has straight wall sections.
[0010] In one embodiment, viewed along the depth direction of the cooking appliance, the recess is constructed to overlap with the front wall. This not only facilitates the flow of hot air into the cooking chamber through at least one air vent, particularly into the area at the junction between the front wall and the cooking chamber partition; on the other hand, this relative positioning is also particularly advantageous in order to enable the incoming hot air to be directed in a very directional and uniform manner from this recess to the rest of the cooking chamber via additional flow guide structures.
[0011] In one embodiment, the cavity is constructed to overlap with the front wall when viewed along the height direction of the cooking appliance. This also allows for the additional realization of the aforementioned advantages. Consequently, a relatively long boundary wall is formed along the height direction through this cavity. This again facilitates the guided and particularly uniform and even delivery of hot air from this cavity into the cooking chamber. It also prevents undesirable large turbulence of hot air or undesirable large amounts of air accumulation within the cavity itself.
[0012] In one embodiment, the cavity is constructed in a manner that shapes a ridge region below the front wall. Therefore, the flow characteristics of hot air passing through the air vents are achieved precisely in this lower ridge region or in the lower corner region, preventing the hot air from accumulating excessively or consequently forming a corresponding narrow section in the airflow space. Because this embodiment also allows for a spacing between this lower ridge region and the cavity wall, this spacing enables a very advantageous, particularly uniform, and at least less congested, outflow towards the other cooking chambers.
[0013] In one embodiment, the upper edge of the cavity, viewed along the depth direction of the cooking appliance, is positioned forward-biased relative to the rear end of the cooking chamber partition. Therefore, viewed along the depth direction, the cavity does not extend completely to the rear edge of the cooking chamber partition. This is another advantageous embodiment because it avoids the possibility that hot air passing through the air vents through the front wall could easily and extensively reach this rear end of the cooking chamber partition, and then, where appropriate, be forced to flow even more extensively around this rear end and into other cooking chamber areas. The flow of incoming hot air can also be stopped here by extending the cooking chamber partition to some extent upward at this rear end or arranging it directly adjacent to the front wall, and, if necessary, at least partially against the outer side of the front wall. By constructing this cavity to a certain extent and then offsetting it forward, hot air can be introduced directly into the cavity in an improved manner, and the geometry and construction of the cavity also allow the hot air to flow out into the other cooking chamber in a desired direction relative to the outer side of the front wall. The spacing of the cavity, especially the spacing of the cavity's boundary wall relative to the front wall, is greater than the minimum spacing between the rearwardly adjacent area of the cooking chamber partition and the front wall.
[0014] In one embodiment, viewed along the depth direction of the cooking appliance, the upper edge of the cavity at the front, viewed along the depth direction of the cooking appliance, is positioned higher than the upper edge of the cavity at the rear, viewed along the depth direction of the cooking appliance. Therefore, these two upper edges of the cavity, which are offset from each other along the depth direction (thus defining the cavity at the end when viewed along this depth direction), are also offset from each other along the height direction. This also achieves a geometry that, on the one hand, facilitates the inflow of hot air from the front wall into the cavity in an improved manner, and on the other hand, allows the incoming hot air to be guided out of the cavity into another cooking chamber in a particularly advantageous manner. This also particularly avoids the formation of undesirable, strong vortices around the lower edge region of the front wall and thus, if necessary, restricts other outflow states of hot air from the cavity.
[0015] In one embodiment, the front cavity region viewed along the depth direction, extending to the upper edge of the front cavity, is constructed as a flow ramp. This flow ramp points particularly upward. Therefore, it is an elevated, curved boundary wall section. This also means that this front cavity region is particularly continuously curved, preferably continuously concave. A particularly advantageous air-guiding geometry is achieved by extending this front cavity region upward along the height direction with its curved portion. This air-guiding geometry, according to the aforementioned embodiment, can also be constructed as a flow ramp, thereby achieving particularly efficient air guidance and diversion from the cavity to the rest of the cooking chamber.
[0016] Specifically, this flow ramp extends from the lowest point of the groove-shaped boundary wall to the upper edge of the front cavity. The flow ramp extends along the height direction, particularly from its rear end below the edge region of the front wall, to its front end above the edge region.
[0017] In one embodiment, the front wall is constructed in a basin shape. This basin shape has a front panel and a front wall shroud. The front wall shroud is arranged around the edge of the front panel. Such a front wall is inherently more stable and rigid. Therefore, it has high deformation stability even under significant thermal stress. Furthermore, the front wall can also advantageously limit the receiving space on its narrow side through this front wall shroud. In particular, it is possible to arrange the front wall shroud to at least partially abut against the rear wall in the installed state of the front wall. Thus, the receiving space is also at least partially closed on its narrow periphery, which is formed by the interval between the rear wall and the front wall measured along the depth direction. This prevents undesirable escape of hot air in these areas. It is particularly possible that hot air generated in the correspondingly closed receiving space enters the cooking chamber only through, or substantially only through, air vents constructed and arranged in a defined manner in the front wall.
[0018] In one embodiment, viewed along the depth direction of the cooking appliance, the cooking chamber partition is arranged in its final position within the cooking chamber in such a way that it overlaps with the front wall enclosure of the front wall by at least 50%, and particularly at least 80%. Thus, not only are linear edges formed only at the edges of the front panel provided, but also these planar strips along the depth direction through the front wall enclosure achieve a large overlap area with the cooking chamber partition. It is in such an embodiment that the invention is particularly advantageous. This is because a relatively large junction area is thus created between the cooking chamber partition's front-wall-facing side and the front wall enclosure. It is there that hot air, which could then enter particularly unfavorably, accumulates and is forced around the cooking chamber partition and flows into other sub-areas of the cooking chamber. With the invention, this situation is avoided in a particularly advantageous manner. Because the recess also creates a geometrically specific, enlarged airflow space between the front wall enclosure and the cooking compartment partition on the side facing the front wall enclosure, thereby particularly advantageously preventing the undesirable accumulation of incoming hot air at this junction area between the front wall enclosure and the cooking compartment partition.
[0019] In one embodiment, the upper edge of the recess, viewed from the rear along the depth direction, is arranged relative to the front wall enclosure of the front wall at a first vertical distance, particularly viewed from the height direction. The upper edge of the recess, viewed from the front along the depth direction, is arranged relative to the front plate of the front wall at a second horizontal distance, particularly viewed from the depth direction. The first distance is particularly smaller than the second distance. Therefore, this geometry causes the airflow space to be at least partially enlarged or expanded from rear to front and upward. This allows hot air to enter the recess particularly advantageously and to continue to be directed particularly advantageously toward the airflow space into the rest of the cooking chamber.
[0020] In one embodiment, at least one air vent is constructed in the front wall enclosure. The invention is particularly advantageous in such embodiments. Because hot air enters through these locally specifically arranged air vents in the front wall enclosure, this hot air, in one embodiment, flows directly downwards in a certain vertical direction onto the cooking compartment partition. By then, in this embodiment, arranging this cavity in the region of the air vent in the front wall enclosure, airflow space is also provided precisely in this air vent. Therefore, precisely at this locally located point, it is possible to achieve a particularly advantageous and at least reduced backflow towards the cooking compartment partition, and through its construction with an uneven guide structure, especially with the cavity, the hot air can be guided in a highly desirable manner to another cooking compartment.
[0021] In one embodiment, the cavity and the air vent in the front wall enclosure are arranged to at least partially overlap each other when viewed along the depth direction. The advantages of this have already been mentioned above.
[0022] In one embodiment, at least one air vent in the front wall enclosure is constructed with a sloping wall extending rearward from the air vent into the receiving space. This allows hot air in the receiving space to be guided toward the air vent in a very specific manner through this sloping wall. Specifically, this sloping wall guides the hot air in the receiving space along a flow direction inclined relative to the axis of the air vent. This is done such that the hot air flows into the cavity at an angle toward the cooking chamber as it passes through the air vent. Therefore, in this embodiment, the flow direction of the hot air is not, or primarily not, perpendicular to the axis of the air vent, but rather inclined toward it. Thus, this sloping wall facilitates the flow characteristics of the hot air through the air vent, such that the hot air passing through in this way already has a predetermined flow direction in the cooking chamber. This flow direction is inclined toward the cavity and toward the cooking chamber. This flow direction is particularly away from the rear end of the cooking chamber partition. Therefore, this also better prevents hot air flowing into the cavity through the air vent from potentially reaching the rear end of the cooking compartment partition on the facing side, where the cavity is slightly spaced relative to the rear end. This sloping wall portion can, for example, be a curved portion of a freely divisible sub-region in the front wall.
[0023] The front wall can be made of metal. It can be, for example, sheet metal, especially steel plate. Thus, the inclined wall portion, in itself, is easy to manufacture and arrange in a precise manner, and is correspondingly stable relative to large thermal effects.
[0024] In one embodiment, the cooking chamber partition has the entire width of the cooking chamber between the two vertical sidewalls of the muffle furnace. In another embodiment, the cooking chamber partition particularly has the entire width of the cooking chamber extending to the depth of the feed opening at the front. The cooking chamber partition is preferably constructed as an uninterrupted plate. Therefore, in one embodiment, the cooking chamber partition can also be constructed as a partition or called a baffle.
[0025] Use terms such as "above", "below", "in front", "behind", "horizontal", "vertical", "depth", "width", and "height" to describe the specified position and orientation when the appliance is used and arranged in a conventional manner.
[0026] Other features of the invention are derived from the claims, drawings, and description of the drawings. Features and combinations of features mentioned above in the specification, as well as features and combinations of features mentioned below in the description of the drawings and / or shown separately in the drawings, can be used not only in the corresponding described combinations but also in other combinations or individually, without departing from the scope of the invention. Therefore, embodiments of the invention that are not explicitly shown and illustrated in the drawings but are known and deriveable from the illustrated embodiments through independent combinations of features should also be considered included and disclosed. Therefore, embodiments and combinations of features that do not possess all the features of the initially drafted independent claims should also be considered disclosed. Attached Figure Description
[0027] The embodiments of the present invention will now be described in detail with the aid of schematic drawings. Wherein:
[0028] Figure 1 A schematic vertical cross-sectional view of an embodiment of a cooking appliance according to the present invention is shown;
[0029] Figure 2 A front view of an embodiment of a cooking appliance according to the present invention is shown;
[0030] Figure 3 It shows according to Figure 1 and Figure 2 A magnified view of the sub-area of cooking utensils; and
[0031] Figure 4 A perspective view of one embodiment of the front wall of a hot air system for a cooking appliance is shown.
[0032] In the accompanying drawings, the same elements or elements with the same function are given the same reference numerals. Detailed Implementation
[0033] exist Figure 1 A schematic vertical cross-sectional view illustrates one embodiment of a cooking appliance 1. The cooking appliance 1 can be, for example, an oven. This cooking appliance can be a microwave cooking appliance or a steam cooking appliance. It is also possible to provide a cooking appliance 1 that is an oven with combined microwave and / or steam cooking functions.
[0034] The cooking appliance 1 has a housing 2. This housing may also be referred to as an outer shell. Furthermore, the cooking appliance 1 has a muffle oven 3. The muffle oven 3 is a separate component from the housing 2. The muffle oven 3 is housed within the housing 2. The muffle oven 3 defines the cooking chamber 4 of the cooking appliance 1 by means of walls. In the embodiment shown here, the muffle oven 3 has a top wall 5, a bottom wall 6, a rear wall 7, and opposing side walls 8 and 9. Figure 2The cooking chamber 4 is enclosed by these walls 5 to 9. Thermal insulation material can be introduced at least partially into the gap between the muffle furnace 3 and the housing 2. Furthermore, the cooking appliance 1 has a door 10. The cooking chamber 4 can be closed from the front by means of the door 10. In particular, the feed opening 11 on the front side of the cooking chamber 4 can be closed thereby.
[0035] Furthermore, the cooking appliance 1 has a hot air system 12. The hot air system 12 is conventionally configured to generate hot air that is introduced into the cooking chamber 4. In the embodiment provided here, the hot air system 12 is arranged in the upper region of the cooking chamber area 4. The hot air system 12 has a front wall 13. This front wall is a component separate from the muffle oven 3, and more particularly from the rear wall 7. The front wall 13 is arranged in the cooking chamber 4 ahead of the rear wall 7 along the depth direction (z-direction) of the cooking appliance 1. The rear wall 7 and the front wall 13 define the accommodating space 14. In this accommodating space 14, for example, the heating element 15 of the hot air system 12 and the fan 16 of the hot air system 12 can be arranged. The heat generated by the heating element 15, or the air thus heated in the accommodating space 14, is introduced into the cooking chamber 4 through the fan 16 via a first air vent 17 located in the front wall 13.
[0036] In one embodiment, the front wall 13 has a front panel 18. Furthermore, a front wall enclosure 19 is constructed to this front panel 18 in a manner that connects to and surrounds it on the edge side. Thus, in this embodiment, the front wall 13 has a basin-shaped form. Consequently, the receiving space 14 is also closed or substantially closed by the front wall enclosure 19 at the depth-direction gap between the front panel 18 and the rear wall 7.
[0037] In one embodiment, at least one additional second air vent 20 can be constructed in the lower section of the front wall enclosure 19 as viewed along the height direction (y direction).
[0038] Furthermore, the cooking appliance 1 has a cooking chamber partition 21. The cooking chamber partition 21 is a separate component in its own right. The cooking chamber partition 21 is a plate-like divider. The cooking chamber partition 21 is preferably constructed without any interruption. It can be introduced into the cooking chamber 4 on a specific and defined push-in plane viewed along the height direction. The cooking chamber partition 21 is conventionally configured to divide the entire common, interconnected cooking chamber 4 into an upper cooking chamber area 4a and a lower cooking chamber area 4b. These cooking chamber areas 4a and 4b are thus sub-regions of the entire cooking chamber 4. They are sized such that, conventionally, food for cooking can be introduced into each of the cooking chamber areas 4a and 4b. Figure 2As shown, the cooking chamber partition 21 is sized, in the width direction (x-direction), primarily by the entire net width between the vertical side walls 8 and 9. The cooking chamber partition 21 is also sized, in the depth direction, primarily by the entire depth between the rear wall 7 and the feed opening 11. As can be seen, in this embodiment, the hot air system 12 is positioned in the upper region such that it can be used for the entire cooking chamber 4 when the cooking chamber partition 21 is removed. When the cooking chamber partition 21 is introduced (which is then arranged in the cooking chamber 4, particularly in its final pushed-in position), the hot air system 12 is only provided for the upper cooking chamber region 4a.
[0039] As in Figure 4 As can also be seen, the cooking compartment partition 21 is arranged directly adjacent to the front wall 13 in its final position.
[0040] Viewed along the depth direction of the cooking appliance 1, the cooking chamber partition 21 is arranged in its final position to overlap with the front wall 13, and in particular with the front wall enclosure 19. In one embodiment, viewed along the height direction of the cooking appliance 1, the cooking chamber partition 21 is arranged in its final position to overlap with the front wall 13, and in particular with the front panel 18. On the side 22 of the cooking chamber partition 21 facing the front wall 13, an uneven flow guide structure 24 is constructed in the edge region 23 of the cooking chamber partition 21 adjacent to the front wall 13. This flow guide structure is constructed, and particularly manufactured integrally with, the cooking chamber partition 21.
[0041] The uneven flow guide structure 24 is particularly constructed with a limiting wall that has no sharp edges in its cross-section. The flow guide structure 24 is particularly constructed along the width direction within the length range where the second air vent 20 is arranged. Therefore, the flow guide structure 24 and the second air vent 20 are arranged overlapping along the width direction. At the opposite ends of the cooking chamber partition 21 along the width direction, the flow guide structure 24, especially the cavity 25, can be laterally closed.
[0042] This uneven airflow structure 24 is conventionally configured to deflect hot air entering the cooking chamber 4 (cooking chamber area 4a) through the air vents (specifically, air vent 20) and flowing into the cooking chamber partition 21 toward the cooking chamber 3 (specifically, cooking chamber area 4a associated with the hot air system 12).
[0043] As in Figure 1As seen in the previous section, the airflow structure 24 is at least partially configured in the edge region 23 as a groove-like cavity 25 in the side 22 facing the front wall 13. As a result, an enlarged airflow space 26 is formed between the front wall 13, especially the front wall enclosure 19 facing the cooking compartment partition 21, and this edge region 23.
[0044] In one embodiment, viewed along the depth direction, the cavity 25 is arranged to overlap with the front wall 13, particularly with the front wall shroud 19. In one embodiment, viewed along the height direction, the cavity 25 is arranged to overlap with the front wall 13, particularly the front panel 18. Furthermore, as in... Figure 1 As can also be seen, in one embodiment, this cavity 25 is constructed around the lower edge region 27 of the front wall 13. Therefore, the cavity 25 is constructed in particular around the lower angular region formed between this lower section of the front wall enclosure 19 and the front panel 18.
[0045] In one embodiment, the rear end 28 of the cooking chamber partition 21 is arranged to abut against or be minimally spaced from the rear wall 7. Furthermore, in one embodiment, the upper edge 29 of the rear recess, viewed along the depth direction, is provided... Figure 3 The end 28, located at the rear of the cooking compartment partition 21, is constructed with a forward offset when viewed along the depth direction.
[0046] Furthermore, when viewed along the height direction, the upper edge 30 of the cavity 25 at the front when viewed along the depth direction is arranged at a higher position than the upper edge 29 of the cavity 25 at the rear when viewed along the depth direction.
[0047] Furthermore, it can be seen that the cavity region 31 in front of the cavity 25 when viewed along the depth direction, up to the upper edge 30 of the cavity in front of the cavity 25, is constructed as a particularly continuous upward-oriented flow ramp (Strömungsschanze).
[0048] As in Figure 1 In and located in Figure 3 As can be seen in the enlarged partial cutaway view of the junction between the front wall 13 and the edge region 23, the cooking compartment partition 21 in its final position is arranged along the depth direction in such a way that it overlaps with the front wall enclosure 19 by at least 50%, and especially at least 80%.
[0049] The upper edge 29 of the recess 25, viewed from the rear along the depth direction, has a first distance a1 relative to the front wall enclosure 19, viewed from the height direction. The upper edge 30 of the recess 25, viewed from the front along the depth direction, has a second distance a2 relative to the front plate 18, viewed from the depth direction. The first distance a1 is particularly smaller than the second distance a2. This distance a1 is preferably minimized in size such that the hot air L (flowing downward from the receiving space 14 through at least one second air passage 20) Figure 3 It is not or substantially not able to be compressed backward at the rear end 28 and may unintentionally flow downward around the rear end 28 into another cooking chamber area 4b.
[0050] As in Figure 3 As can be seen, the upper edge 29 of this rear cavity, viewed along the depth direction, is offset forward at the rear end 28. Thus, a sub-region of the cooking chamber partition 21 is formed at this rear end 28, which is arranged directly adjacent to the front wall enclosure 19 in the final position of the cooking chamber partition 21. In one embodiment, viewed along the depth direction, the upper edge 29 of this rear cavity overlaps with the net width of the second air vent 20. In particular, it is possible to arrange the upper edge 29 of this rear cavity at the same or substantially the same depth position, at which the rear end or rear limiting wall of the second air vent 20 is also arranged. Thereby, viewed along the depth direction, the second air vent 20 is arranged to completely or substantially completely overlap with the cavity 25. This cavity 25 extends along the depth direction between the aforementioned upper edges 29 and 30 of the two cavities.
[0051] As in Figure 3 As can also be seen, the cavity 25 widens forward in the depth direction with its corresponding spacing relative to the front wall 13. Therefore, the edge region 27 or corner region just below this, preferably basin-shaped, front wall 13, allows for particularly advantageous flow characteristics of the hot air L. In one embodiment, the cavity 25 is defined on the opposite end side of the cooking compartment partition 21 in the width direction. Therefore, this cavity 25 is correspondingly closed on the edge side in the width direction. Relatedly, in Figure 3 A lateral boundary wall 32 is shown as an example.
[0052] In addition, Figure 3In one embodiment, a sloping wall 33 is present. This sloping wall extends into the receiving space 14 and terminates directly at the orifice region of the second air passage 20. This sloping wall 33 is oriented such that the hot air L in the receiving space 14 flows out of the receiving space 14 in a flow direction that is inclined relative to the vertical orifice axis of the second air passage 20. Thus, the flow direction of the hot air L is predetermined by this rearward and upward sloping wall 33, causing the hot air L to enter the cavity 25 at a downward and forward angle, and thus enter the cooking chamber region 4a at a forward and downward angle. This also better prevents the hot air L from flowing backward toward the rearward end 28. Furthermore, by means of this flow direction, combined with the recessed boundary wall of the cavity 25, the hot air in the cavity 25 is guided in a very uniform manner toward the cavity region 31, which serves as a flow ramp. Of particular advantage is that this flow ramp also enables the hot air L to be continuously directed to the remaining cooking chamber area 4a.
[0053] In addition, such as in Figure 3 As can be seen in the image, the limiting wall of the cavity 25 is U-shaped. In cross-section, the limiting wall extends between the rear upper edge 29 of the cavity and the front upper edge 30 of the cavity. In the overlapping region of the limiting wall and the second air vent 20, the cavity 25 curves downward away from the second air vent 20. This allows air L to flow advantageously into the cavity 25. In one embodiment, viewed forward along the positive depth direction, the limiting wall of the cavity 25 rises upward in a concave curve after the front plate 18.
[0054] exist Figure 2 The previous view shows the cooking appliance 1. The width of the cooking chamber divider 21 can be seen here.
[0055] exist Figure 4 An embodiment of the front panel 18 is shown in a perspective view, as it is preferably present in the cooking appliance 1. The basin shape can be seen accordingly. A plurality of second air vents 20 at the front wall enclosure 19 are also shown here.
[0056] List of reference numerals in the attached diagram:
[0057] 1. Cooking utensils
[0058] 2. Shell
[0059] 3 Muffle furnace
[0060] 4. Cooking Room
[0061] 4a, b Cooking areas
[0062] 5. Top Wall
[0063] 6 bottom wall
[0064] 7. Rear wall
[0065] 8. Sidewalls
[0066] 9. Sidewalls
[0067] 10 doors
[0068] 11. Feed opening
[0069] 12. Hot air system
[0070] 13 Anterior wall
[0071] 14. Capacity
[0072] 15 Heating element
[0073] 16 fans
[0074] 17 First air passage
[0075] 18 front panel
[0076] 19. Front wall enclosure
[0077] 20 Second air passage
[0078] 21. Cooking room partition
[0079] 22 Side
[0080] 23 Edge Area
[0081] 24. Flow guiding structure
[0082] 25. Cavity
[0083] 26. Air flows into the space
[0084] 27 Edge region
[0085] 28 end
[0086] 29. Upper edge of the concave cavity
[0087] 30 Upper edge of the cavity
[0088] 31. Cavity region
[0089] 32 Boundary Wall
[0090] 33. Sloping wall section
[0091] a1 Spacing
[0092] a2 Spacing.
Claims
1. Cooking appliance (1) having a housing (2) and having a muffle (3) which is arranged in the housing (2) and which delimits, with walls (5, 6, 7, 8, 9), a cooking chamber (4) of the cooking appliance (1); and having a hot air system (12) which has a front wall (13) which is arranged in the cooking chamber (4) such that, between a rear wall (7) of the muffle (3) and this front wall (13), an accommodation space (14) for components (15, 16) of the hot air system (12) is formed, wherein the front wall (13) has a first air passage opening (17) through which hot air can be conducted from the accommodation space (14) into the cooking chamber (4); and having a plate-like cooking chamber partition (21) which can be removed from the cooking chamber (4) and which, in its end position in the cooking chamber (4), divides the cooking chamber (4) into a first cooking chamber region (4a) and a second cooking chamber region (4b), characterized in that Viewed along the depth direction (z) of the cooking appliance (1), the cooking chamber partition (21) is arranged overlappingly with the front wall (13) in its final position, and / or viewed along the height direction (y) of the cooking appliance (1), the cooking chamber partition (21) is arranged overlappingly with the front wall (13) in its final position, and an uneven flow guide structure (24) is configured in an edge region (23) of the cooking chamber partition (21) which faces the front wall (13), through which the hot air (L) entering into the cooking chamber (4) through the first air passage opening (17) and flowing onto the cooking chamber partition (21) can be deflected towards a cooking chamber region (4a) to be supplied with hot air (L).
2. The cooking appliance (1) according to claim 1, characterized in that, The flow guide structure (24) is configured at least partially in the edge region (23) such that an enlarged air inflow space (26) is formed between the front wall (13) and the facing side (22).
3. The cooking appliance (1) according to claim 1, characterized in that, The flow guide structure (24) is configured at least partially as a groove-like recess (25) in the facing side (22) in the edge region (23) such that an enlarged air inflow space (26) is formed between the front wall (13) and the facing side (22).
4. The cooking appliance (1) according to claim 3, characterized in that, Viewed along the depth direction (z), the recess (25) is configured overlappingly with the front wall (13).
5. The cooking appliance (1) according to claim 3, characterized in that, Viewed along the height direction (y), the recess (25) is configured overlappingly with the front wall (13).
6. The cooking appliance (1) according to claim 3, characterized in that, The recess (25) is configured around a lower edge region (27) of the front wall (13).
7. The cooking appliance (1) according to claim 3, characterized in that, A rear recess upper edge (29) of the recess (25) viewed along the depth direction (z) is arranged offset forwardly with respect to a rear end (28) of the cooking chamber partition (21).
8. The cooking appliance (1) according to claim 3, characterized in that, Viewed along the height direction (y), a front recess upper edge (30) of the recess (25) viewed along the depth direction (z) is located higher than a rear recess upper edge (29) of the recess (25) viewed along the depth direction (z).
9. The cooking appliance (1) according to claim 3, characterized in that, A front recess region (31) of the recess (25) viewed along the depth direction (z) is configured as a flow ramp up to the front recess upper edge (30) of the recess (25).
10. The cooking appliance (1) according to claim 3, characterized in that, The front wall (13) is configured pot-shaped and the pot shape has a front plate (18) and a front wall shroud (19) arranged circumferentially on an edge of the front plate (18).
11. The cooking appliance (1) according to claim 10, characterized in that, The cooking chamber partition (21) is arranged in the final position in such a way that it overlaps the front wall shroud (19) by at least 50% along the depth direction (z).
12. The cooking appliance (1) according to claim 10, characterized in that, A rear cavity upper edge (29) of the cavity (25) viewed in the depth direction (z) has a first spacing (al) from the front wall enclosure (19) viewed in the height direction (y), and a front cavity upper edge (30) of the cavity (25) viewed in the depth direction (z) has a second spacing (a2) from the front plate (18) viewed in the depth direction (z), wherein the first spacing (al) is smaller than the second spacing (a2).
13. The cooking appliance (1) according to claim 10, characterized in that, At least one second air passage opening (20) is configured in the front wall enclosure (19).
14. The cooking appliance (1) according to claim 13, characterized in that, The cavity (25) and the second air passage opening (20) in the front wall enclosure (19) are arranged at least partially overlapping one another in the depth direction (z).
15. The cooking appliance (1) according to claim 10, characterized in that, The at least one second air passage opening (20) in the front wall enclosure (19) has a sloping wall portion (32) which slopes from the front wall enclosure (19) rearward into the accommodation space (14), thereby predefining for the hot air (L) in the accommodation space (14) by means of the sloping wall portion (32) a flow direction inclined relative to a bore axis of the second air passage opening (20), so that the hot air (L) flows into the cavity (25) inclined in such a way when passing through the second air passage opening (20) that it is directed toward the cooking chamber (4) and away from the rear wall (7) of the muffle (3).
16. The cooking appliance (1) according to claim 1 or 2, characterized in that, The cooking chamber partition (21) has a width of the cooking chamber (4) between the two vertical side walls (8, 9) of the muffle (3) and / or a depth of the cooking chamber (4) up to the feed opening (11) on the front side and is configured as an uninterrupted plate, thereby forming a bulkhead.
17. The cooking appliance (1) according to claim 10, characterized in that, The cooking chamber partition (21) is arranged in the final position in such a way that it overlaps the front wall enclosure (19) in the depth direction (z) by at least 80%.
18. The cooking appliance (1) according to claim 10, characterized in that, At least one second air passage opening (20) is configured in a section of the front wall enclosure (19) facing the facing side (22). The at least one second air passage opening (20) is configured in a section of the front wall enclosure (19) facing the facing side (22).
Citation Information
Patent Citations
Flow directing device for a cooking appliance
CN102203511A
Cooking appliance e.g. microwave oven has electrically driven brushless motor that is arranged for driving fan with speed of more than specified revolutions per minute
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