Deodorizing structure for cooking device and cooking device

Abstract

The deodorization structure comprises a centrifugal fan blade capable of rotating forwards and backwards, catalytic modules with the centrifugal fan blade as the center are arranged on the periphery of the centrifugal fan blade at intervals in the circumferential direction, and a ventilation gap is formed between every two adjacent catalytic modules. Each ventilation gap extends from inside to outside in the air outlet airflow direction of the centrifugal fan blade in the forward rotation state. Compared with the prior art, a complex control mechanism does not need to be arranged, the catalytic decomposition function of air flow can be achieved by changing the rotating direction of the centrifugal fan blades, on one hand, peculiar smell in the air flow can be effectively removed, on the other hand, the fragrance of food can be effectively guaranteed, and therefore the cooking effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of cooking devices, and in particular to a deodorizing structure for a cooking device and a cooking device. Background Technology

[0002] Ovens, oven-microwave ovens, steam ovens, and other cooking appliances with baking functions generally have a hot air circulation system installed on the rear side of the inner cavity to achieve circulating heating within the cavity and ensure uniform heating. For example, the Chinese invention patent "A Steam Oven and Its Exhaust Control Method" with patent number ZL202210040203.8 (authorization announcement number CN114468792A) is an example.

[0003] Furthermore, food produces fumes and odors during the baking process. Existing technologies address this issue by using a catalytic module to treat the gases produced during cooking. For example, Chinese utility model patent ZL202320075624.4 (authorization announcement number CN219206633U) discloses a baking-function cooking inner cavity structure and oven, including an inner cavity. A top heating pipe is installed on the inner top surface of the inner cavity, and a hot air fan is installed on the back plate. A hot air baffle is provided on the rear side of the inner cavity, with an air inlet and an air outlet. The hot air baffle and the back plate of the inner cavity form a hot air chamber. The fan blades of the hot air fan are located in the hot air chamber, and a back heating pipe is provided around the outer periphery of the fan blades. A high-temperature catalytic decomposition device for decomposing fumes is provided at the top of the inner cavity. The air outlet of the hot air baffle includes a first air outlet, and the air inlet of the high-temperature catalytic decomposition device is fluidly connected to the first air outlet of the hot air baffle.

[0004] However, in addition to producing fumes and odors, cooking also generates aromatic gases. These aromas enhance the flavor of dishes, especially those with distinctive fragrances. If these aromas are catalyzed and removed, the cooking effect will be diminished. Summary of the Invention

[0005] The first technical problem to be solved by this invention is to provide a deodorizing structure for cooking devices that has good cooking effect, in contrast to the prior art.

[0006] The second technical problem to be solved by this utility model is to provide a cooking device with the above-mentioned deodorizing structure in contrast to the prior art.

[0007] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a deodorizing structure for a cooking device, characterized in that it includes a centrifugal fan blade that can rotate in both directions, and catalytic modules centered on the centrifugal fan blade are arranged around the centrifugal fan blade in a circumferential manner, and ventilation gaps are formed between adjacent catalytic modules, and each ventilation gap extends from the inside to the outside along the airflow direction when the centrifugal fan blade is rotating in the forward direction.

[0008] Furthermore, each of the aforementioned catalytic modules is a long, rectangular block, and each is inclined in the same circumferential direction from the inside out, centered on the centrifugal fan blade. This allows for a simple structure of each catalytic module and enables better ventilation gaps between adjacent catalytic modules.

[0009] Furthermore, the longitudinal section of each catalyst module is square. This makes the structure of each catalyst module simpler and allows for better ventilation gaps between adjacent catalyst modules.

[0010] Furthermore, each of the catalytic modules has an inwardly recessed side along the same circumferential direction, forming a groove. This extends the residence time of the airflow at each catalytic module when the centrifugal fan blades reverse, thus improving the catalytic effect on the decomposition of odor molecules in the airflow.

[0011] Furthermore, the grooves of each catalytic module extend along the length of the module and are respectively arc-shaped. This ensures both a longer airflow residence time when the centrifugal fan blades rotate in reverse and an effective guarantee of the airflow velocity through the ventilation gap when the centrifugal fan blades rotate in the forward direction.

[0012] Furthermore, the longitudinal section of each of the catalytic modules is arc-shaped. This better ensures the airflow velocity through the ventilation gap when the centrifugal fan blades rotate forward, effectively avoiding kinetic energy loss.

[0013] Furthermore, each of the aforementioned catalytic modules is provided with through-hole catalytic channels, and when the centrifugal fan blades are in reverse state, the airflow from the centrifugal fan blades can pass through at least a portion of the catalytic channels on each catalytic module, thereby achieving the catalytic decomposition of odor molecules in the airflow.

[0014] Furthermore, each of the aforementioned catalytic modules includes a square shell and a catalytic block. The shell is hollow, forming a cavity inside. The size of the catalytic block matches the cavity and is housed within it.

[0015] Furthermore, the aforementioned catalyst block is provided with the aforementioned catalyst channels, and the corresponding sidewalls of the shell along the extension direction of each catalyst channel are hollowed out, exposing each port of each catalyst channel. This allows for a simple internal structure of each catalyst module, and enables airflow to flow more smoothly into the catalyst channels of each catalyst module when the centrifugal fan blades are in reverse rotation.

[0016] Furthermore, it also includes a ring-shaped mounting plate, which surrounds the centrifugal fan blade with the aforementioned centrifugal fan blade as the center, and the housings of each catalytic module are respectively fixed on the mounting plate. This facilitates the stable installation of each catalytic module.

[0017] Furthermore, the centrifugal fan blade includes a base plate and blades disposed on the same side of the base plate. The mounting plate is disposed parallel to the base plate inside and out. The corresponding end faces of each housing are fixed on the surface of the mounting plate on the same side as each blade. In addition, each housing and each blade are respectively opposite to each other inside and out.

[0018] Furthermore, the system also includes a deodorization chamber, in which the aforementioned centrifugal fan blades and each catalytic module are respectively disposed. On one side wall of the deodorization chamber, air inlets and outlets matching the size of the centrifugal fan blades are respectively provided. The air inlets are directly opposite the centrifugal fan blades, while the air outlets are spaced circumferentially around the air inlets. Thus, when the centrifugal fan blades are rotating, airflow enters the deodorization chamber through the air inlets and, under the centrifugal force of the fan blades, passes through the ventilation gaps or is catalytically decomposed by the catalytic modules, before flowing out of the deodorization chamber through the air outlets. It is evident that the deodorization chamber improves the efficiency and effectiveness of catalytic decomposition of odor molecules in the airflow.

[0019] Furthermore, it also includes an inner pot for holding food to be cooked, with an opening at the front. The centrifugal fan blades are mounted on the inner pot wall, and a hot air baffle is installed on the inner surface of the inner pot wall to form the deodorization chamber. The air inlet and outlet are respectively located on the hot air baffle. This allows for a better construction of the deodorization chamber within the inner pot, and enables airflow circulation within and between the inner pot and the deodorization chamber. This further enhances the efficiency and effect of catalytic decomposition of odor molecules in the airflow, while also ensuring the uniformity of the internal flow field of the inner pot and avoiding unevenness in the internal flow field caused by deodorization.

[0020] The technical solution adopted to further solve the second technical problem mentioned above is: a cooking device, characterized in that it includes the deodorizing structure for the cooking device as described above.

[0021] Compared with the prior art, the advantages of this utility model are as follows: the centrifugal fan blades can rotate in both directions, and catalytic modules centered on the centrifugal fan blades are arranged circumferentially around the centrifugal fan blades, forming ventilation gaps between adjacent catalytic modules, with each ventilation gap extending from the inside to the outside along the airflow direction when the centrifugal fan blades are rotating in the forward direction. Thus, when the centrifugal fan blades are rotating in the forward direction, the airflow from the centrifugal fan blades flows outward along each ventilation gap, and the catalytic modules do not catalyze the airflow from the centrifugal fan blades, thereby preserving the odor of the airflow (such as the natural aroma of food or the aroma of seasonings); however, when the centrifugal fan blades are rotating in the reverse direction, the airflow from the centrifugal fan blades blows onto each catalytic module, and each catalytic module catalyzes and decomposes the odor molecules (such as oil fume molecules) in the airflow from the centrifugal fan blades, thereby removing the odor from the airflow.

[0022] As can be seen, this utility model does not require a complex control mechanism. By changing the rotation direction of the centrifugal fan blades, the catalytic decomposition function of the airflow can be turned on and off. On the one hand, it can effectively remove odors from the airflow, and on the other hand, it can effectively preserve the aroma of the food, thereby ensuring the cooking effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the deodorizing structure in Embodiment 1 of this utility model;

[0024] Figure 2 This is a cross-sectional view of the deodorizing structure in Embodiment 1 of this utility model;

[0025] Figure 3 This is a partial exploded view of the deodorizing structure in Embodiment 1 of this utility model;

[0026] Figure 4 This is a partial structural diagram of the deodorizing structure in Embodiment 1 of this utility model;

[0027] Figure 5 for Figure 4 A structural diagram from another direction;

[0028] Figure 6 This is a partial structural diagram of the deodorizing structure in Embodiment 1 of this utility model;

[0029] Figure 7 for Figure 6 Enlarged view of section A;

[0030] Figure 8 This is an exploded view of the deodorizing structure in Embodiment 1 of this utility model;

[0031] Figure 9 This is a partial structural diagram of the deodorizing structure in Embodiment 2 of this utility model;

[0032] Figure 10 for Figure 9 A structural diagram in another direction. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0035] Example 1:

[0036] like Figures 1-8 As shown, a deodorizing structure for a cooking device includes a reversible centrifugal fan blade 3. Catalytic modules 4 are arranged circumferentially around the centrifugal fan blade 3, with the centrifugal fan blade 3 at intervals around it. Ventilation gaps 6 are formed between adjacent catalytic modules 4, and each ventilation gap 6 extends from the inside to the outside along the airflow direction when the centrifugal fan blade 3 is rotating.

[0037] As can be seen from the above, in this utility model, the centrifugal fan blade 3 can rotate in both directions (i.e., it is driven by a bidirectional motor to achieve both directions; in this embodiment, forward rotation is clockwise and reverse rotation is counterclockwise). Furthermore, catalytic modules 4 are circumferentially spaced around the centrifugal fan blade 3, with ventilation gaps 6 formed between adjacent catalytic modules 4. Each ventilation gap 6 extends from the inside out along the airflow direction when the centrifugal fan blade 3 is rotating in the forward direction. Thus, when the centrifugal fan blade 3 is rotating in the forward direction, the airflow passes through each ventilation gap 6, and the catalytic modules 4 do not catalyze the airflow, thus preserving the odor of the airflow (e.g., the natural aroma of food or the aroma of seasonings). When the centrifugal fan blade 3 is rotating in the reverse direction, the airflow blows onto each catalytic module 4, and each catalytic module 4 catalyzes and decomposes the odor molecules (such as oil fume molecules) in the airflow, thereby removing the odor from the airflow. As can be seen, this utility model does not require a complex control mechanism. By changing the rotation direction of the centrifugal fan blade 3, the catalytic decomposition function of the airflow can be turned on and off. On the one hand, it can effectively remove odors from the airflow, and on the other hand, it can effectively preserve the aroma of the food, thereby ensuring the cooking effect.

[0038] Furthermore, each of the aforementioned catalytic modules 4 is a long, rectangular block, and each is inclined in the same circumferential direction from the inside out, centered on the centrifugal fan blade 3. This simplifies the structure of each catalytic module 4 and allows for better ventilation gaps 6 between adjacent catalytic modules 4. Preferably, in this embodiment, the longitudinal section of each of the aforementioned catalytic modules 4 is square, further simplifying the structure of each catalytic module 4 and better enabling the formation of ventilation gaps 6 between adjacent catalytic modules 4.

[0039] Furthermore, each of the aforementioned catalytic modules 4 is provided with through-hole catalytic channels 420. When the centrifugal fan blade 3 is in reverse rotation, the airflow from the centrifugal fan blade 3 can pass through the catalytic channels 420 on each catalytic block 4, thereby achieving the catalytic decomposition of odor molecules in the airflow. Specifically, each of the aforementioned catalytic modules 4 includes a square shell 41 and a catalytic block 42. The shell 41 is hollow, forming a cavity 40 inside. The size of the catalytic block 42 matches the cavity 40 and is housed within it. The catalytic channels 420 are arranged on the catalytic block 42, and the shell 41 has corresponding sidewalls that are perforated along the extension direction of each catalytic channel 420, exposing each port of each catalytic channel 420. This results in a simple internal structure for each catalytic module 4, and allows for smoother airflow into the catalytic channels 420 of each catalytic module 4 when the centrifugal fan blade 3 is in reverse rotation. In this embodiment, each catalyst channel 420 on each catalyst block 42 extends along its thickness direction.

[0040] Furthermore, it also includes an annular mounting plate 5, which surrounds the centrifugal fan blade 3 with the centrifugal fan blade 3 as the center, and the housing 41 of each catalyst module 4 is respectively fixed on the mounting plate 5. This facilitates the stable installation of each catalyst module 4. Furthermore, the centrifugal fan blade 3 includes a base plate 31 and blades 32 disposed on the same side surface of the base plate 31. The mounting plate 5 is arranged parallel to the base plate 31 inside and out, and the corresponding end faces of each housing 41 are respectively fixed on the surface of the mounting plate 5 on the same side as each blade 32, and each housing 41 and each blade 32 are respectively opposite to each other inside and out.

[0041] Furthermore, the system also includes a deodorization chamber 20, in which the aforementioned centrifugal fan blades 3 and each catalytic module 4 are respectively disposed. On one side wall of the deodorization chamber 20, there are air inlets 21 and outlets 22, each matching the size of the fan surface of the centrifugal fan blades 3. The air inlets 21 are directly opposite the centrifugal fan blades 3, while the outlets 22 are spaced circumferentially around the air inlets 21. Thus, when the centrifugal fan blades 3 are rotating, the airflow enters the deodorization chamber 20 through the air inlets 21, and under the centrifugal force of the centrifugal fan blades 3, passes through the ventilation gaps 6 or is catalytically decomposed by the catalytic modules 4, before flowing out of the deodorization chamber 20 through the outlets 22. Therefore, the deodorization chamber 20 improves the efficiency and effectiveness of catalytic decomposition of odor molecules in the airflow.

[0042] The deodorizing structure in this embodiment is applied in a cooking device (specifically, a cooking device with a baking function, such as an oven, a steam oven, or a steam microwave oven). This cooking device includes an inner pot (not shown) for holding food to be cooked. The inner pot has an opening at the front. The centrifugal fan blade 3 is mounted on the back plate 1 of the inner pot. The mounting plate 5 is fixed to the inner surface of the back plate 1, and a hot air baffle 2 is installed on the inner surface of the back plate 1 to form the deodorizing chamber 20. The air inlet 21 and air outlet 22 are respectively located on the hot air baffle 2. This allows for a better construction of the deodorizing chamber 20 within the inner pot. Furthermore, the deodorizing chamber 20 enables airflow circulation within the inner pot and between the deodorizing chambers, further improving the efficiency and effect of catalytic decomposition of odor molecules in the airflow. Simultaneously, it ensures the uniformity of the internal flow field within the inner pot, avoiding unevenness caused by deodorization. As can be seen, the deodorizing chamber 20 in this invention also serves as the hot air chamber of the cooking device. Preferably, the deodorizing chamber 20 is further equipped with an annular heating tube (not shown) to provide heat for the decomposition catalytic reaction of each catalytic module 4. More preferably, the heating tube is annular and positioned outside each catalytic module 4 with the centrifugal fan blade 3 as the center. In this embodiment, the deodorizing chamber 20 is located on the back of the inner liner, but it can also be located in other positions within the inner liner, such as the left side wall, right side wall, bottom wall, or top wall.

[0043] Example 2:

[0044] like Figure 9 and Figure 10 As shown, unlike Example 1, in this example, each of the above-mentioned catalytic modules 4 has its side surface recessed inward along the circumferential direction to form a groove 43. This extends the residence time of the airflow at each catalytic module 4 when the centrifugal fan blade 3 reverses, which is beneficial to improving the catalytic effect on the decomposition of odor molecules in the airflow.

[0045] Preferably, the grooves 43 of each of the above-mentioned catalytic modules 4 extend along the length of the catalytic module 4 and are respectively arc-shaped. This ensures that while extending the airflow residence time when the centrifugal fan blade 3 rotates in reverse, it can also effectively ensure the airflow velocity through the ventilation gap 6 when the centrifugal fan blade 3 rotates in the forward direction. More preferably, the longitudinal section of each of the above-mentioned catalytic modules 4 is arc-shaped, which can better ensure the airflow velocity through the ventilation gap 6 when the centrifugal fan blade 3 rotates in the forward direction, effectively avoiding kinetic energy loss.

Claims

1. A deodorizing structure for a cooking appliance, characterized in that, It includes a centrifugal fan blade (3) that can rotate in both directions. Around the centrifugal fan blade (3), there are catalytic modules (4) centered on the centrifugal fan blade (3) at intervals along the circumferential direction. Ventilation gaps (6) are formed between adjacent catalytic modules (4), and each ventilation gap (6) extends from the inside to the outside along the airflow direction when the centrifugal fan blade (3) is rotating in the forward direction.

2. The deodorizing structure for a cooking appliance as described in claim 1, characterized in that, Each of the catalyst modules (4) is a long strip-shaped block, and each is tilted in the same direction from the inside to the outside along the circumference with the centrifugal fan blade (3) as the center.

3. The deodorizing structure for a cooking device as described in claim 2, characterized in that, Each of the catalytic modules (4) has a square longitudinal section.

4. The deodorizing structure for a cooking device as described in claim 2, characterized in that, Each of the catalyst modules (4) has a groove (43) formed by indenting the same side along the circumferential direction.

5. The deodorizing structure for a cooking device as described in claim 4, characterized in that, The grooves (43) of each catalyst module (4) extend along the length of the catalyst module (4) and are respectively arc-shaped.

6. The deodorizing structure for a cooking apparatus as described in claim 5, characterized in that, Each of the catalytic modules (4) has a circular arc shape in its longitudinal section.

7. The deodorizing structure for a cooking apparatus as described in any one of claims 1 to 6, characterized in that, Each of the catalyst modules (4) is provided with through-hole catalyst channels (420), and when the centrifugal fan blade (3) is in reverse state, the airflow from the centrifugal fan blade (3) can pass through at least part of the catalyst channels (420) on each catalyst module (4).

8. The deodorizing structure for a cooking apparatus as described in claim 7, characterized in that, Each of the aforementioned catalytic modules (4) includes a square housing (41) and a catalytic block (42). The housing (41) is hollow and forms a cavity (40) inside it. The size of the catalytic block (42) matches the cavity (40) and is housed within the cavity (40). Furthermore, the catalyst block (42) is provided with the catalyst channels (420), and the corresponding sidewalls of the shell (41) along the extension direction of each catalyst channel (420) are hollowed out so that each port of each catalyst channel (420) is exposed.

9. The deodorizing structure for a cooking apparatus as described in claim 8, characterized in that, It also includes a ring-shaped mounting plate (5), which is arranged around the centrifugal fan blade (3) with the centrifugal fan blade (3) as the center, and the housing (41) of each catalytic module (4) is fixed on the mounting plate (5).

10. The deodorizing structure for a cooking apparatus as described in claim 9, characterized in that, The centrifugal fan blade (3) includes a base plate (31) and blades (32) disposed on the same side of the base plate (31). The mounting plate (5) is disposed parallel to the base plate (31) inside and out. The corresponding end face of each housing (41) is fixed on the surface of the mounting plate (5) on the same side as each blade (32). Furthermore, each housing (41) and each blade (32) are respectively opposite to each other inside and out.

11. The deodorizing structure for a cooking apparatus as described in any one of claims 1 to 6, characterized in that, It also includes a deodorization chamber (20), in which the centrifugal fan blades (3) and each catalyst module (4) are respectively disposed. Furthermore, an air inlet (21) and an air outlet (22) matching the size of the fan surface of the centrifugal fan blades (3) are respectively provided on one side wall of the deodorization chamber (20). The air inlet (21) is directly opposite to the centrifugal fan blades (3), while the air outlets (22) are arranged circumferentially with the air inlet (21) as the center.

12. The deodorizing structure for a cooking apparatus as described in claim 11, characterized in that, It also includes an inner liner for placing food to be cooked, with an opening on the front side of the inner liner. The centrifugal fan blade (3) is installed on the inner liner wall, and a hot air baffle (2) is provided on the inner surface of the inner liner wall to form the deodorizing chamber (20). The air inlet (21) and air outlet (22) are respectively opened on the hot air baffle (2).

13. A cooking apparatus, characterized in that, Includes the deodorizing structure for cooking appliances as described in any one of claims 1 to 12.

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