Cooking utensil capable of catalyzing oil smoke

Abstract

The cooking utensil comprises a cooking cavity and a catalysis module, the catalysis module can catalyze and decompose oil fume approaching and / or flowing through the catalysis module, a catalysis channel is formed in the catalysis module, and the catalysis channel communicates with the cooking cavity; and at least part of the catalytic channel is in a broken line shape and extends in the flowing direction of airflow in the catalytic channel. A catalytic channel of a common catalytic module is of a straight hole structure, the channel path is short, and the contact area of oil fume and the inner surface of the catalytic channel is small, so that the overall catalytic efficiency is low; the catalytic channel with at least part in the broken line shape is adopted, the path of the catalytic channel is prolonged to a large extent, the contact area between oil fume and the inner surface of the catalytic channel is increased, accordingly, the catalytic efficiency is improved, the flow of purified hot air in unit time is increased, and the heating efficiency of food in the cooking cavity is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cooking utensils, concretely relates to a cooking utensil of oil fume catalysis. BACKGROUND

[0002] The existing food heater is generally provided with an oil fume catalysis module, which purifies airflow by decomposing oil fume through contact between oil fume and catalyst, so as to remove peculiar smell and prevent food from being flavored. One of the factors affecting the catalysis efficiency of oil fume is the contact area between oil fume and catalyst. In the existing catalysis structure, the contact area between oil fume and catalyst is small, which leads to low catalysis efficiency of the catalyst.

[0003] For example, the existing patent CN201910818038.2 discloses a cooking appliance, which is provided with a high-temperature catalysis part in the cooking cavity. The high-temperature catalysis part includes a catalysis carrier and a high-temperature catalyst coated on the catalysis carrier. The catalysis carrier is of a porous structure. Although the porous structure can increase the specific surface area of the catalyst to a certain extent, the contact area between oil fume and the catalyst is still limited, which is difficult to greatly improve the catalysis efficiency. SUMMARY

[0004] The utility model provides a cooking utensil of oil fume catalysis, aims at solving the technical problem of small contact area between the existing catalysis module and oil fume, which leads to low catalysis efficiency.

[0005] The utility model discloses a cooking utensil of oil fume catalysis, which includes a cooking cavity and a catalysis module. The catalysis module can catalytically decompose oil fume close to and / or flowing through it. A catalysis channel is arranged in the catalysis module. The catalysis channel is in communication with the cooking cavity. The catalysis channel extends at least partially in a zigzag shape along the direction of airflow flowing in the catalysis channel.

[0006] The cooking utensil of oil fume catalysis of the utility model also has the following additional technical features:

[0007] Along the direction of airflow flowing in the catalysis channel, the catalysis channel includes an air inlet channel, a main channel and an air outlet channel which are sequentially communicated. The air inlet channel and the air outlet channel both extend in a straight line. The main channel extends in a zigzag shape from the air inlet channel to the air outlet channel.

[0008] The main channel is bent at least twice.

[0009] The main channel is bent twice, and the directions of the two bends are opposite, so that the air inlet channel and the air outlet channel which are in communication with the main channel are arranged opposite to each other.

[0010] Along the direction of airflow flowing in the catalysis channel, the inner diameter of the catalysis channel decreases.

[0011] The catalytic module comprises a plurality of catalytic channels arranged in an array.

[0012] The cooking appliance comprises a heating element, which is a heating pipe arranged above the catalytic module, or a heating sheet embedded in the catalytic channel.

[0013] The cooking appliance comprises a temperature detecting element, and a probe of the temperature detecting element is arranged at an air inlet end of the catalytic channel.

[0014] The cooking appliance comprises a housing, and the catalytic module and the cooking cavity are arranged in the housing in sequence from top to bottom.

[0015] The upper air duct is provided with a plurality of guide ribs arranged at intervals along the length direction of the catalytic module, and a guide channel is formed between adjacent guide ribs and extends along the width direction of the catalytic module.

[0016] Due to the above technical solutions, the cooking appliance has the following beneficial effects:

[0017] 1. The catalytic channel of a common catalytic module is a straight hole structure, and the channel path is short, and the contact area between the oil fume and the inner surface of the catalytic channel is small, resulting in low overall catalytic efficiency.

[0018] 2. In order to make the air inlet and air outlet of the catalytic channel more smooth, the two ends of the catalytic channel are respectively provided with straightly extending air inlet channels and air outlet channels, so that the air flow can be directly blown into and out of the catalytic channel.

[0019] In order to further increase the contact area between the oil fume and the inner surface of the catalytic channel, the main channel is bent at least twice, which can prolong the path of the main channel so that the oil fume can fully contact with the catalyst when passing through.

[0020] For the same catalytic channel, the air inlet channel and the air outlet channel can be aligned or staggered. In the limited radial space, in order to distribute more catalytic channels, it is preferred that the air inlet channel and the air outlet channel are aligned, so that the number of catalytic channels can be increased, the hot air flow purified per unit time is increased, and the heating efficiency of food in the cooking cavity is improved.

[0021] 3. In order to avoid that a part of the airflow flows out without contacting the inner surface of the catalytic channel when flowing through the catalytic channel, the inner diameter of the catalytic channel can be designed to be variable. By reducing the inner diameter of the catalytic channel along the direction of airflow flowing in the catalytic channel, the oil fume can be effectively contacted with the inner surface of the catalytic channel. At the same time, the inner diameter of the inlet of the catalytic channel is relatively large, which can ensure smooth airflow.

[0022] 4. When a plurality of catalytic channels are arranged, the plurality of catalytic channels are arranged in an array, which is beneficial to arrange more catalytic channels in a limited space, thereby improving the catalytic efficiency as a whole, increasing the hot air flow purified per unit time, and improving the heating efficiency of food in the cooking cavity.

[0023] 5. The temperature of the catalyst is also one of the factors affecting the catalytic efficiency. In order to heat the catalyst, the cooking appliance is provided with a heating member. According to different forms of the heating member, the arrangement of the heating member can be optimized. For example, when the heating member is a heating pipe, it can be arranged above the catalytic module for radiation heating, or when the heating member is a heating sheet, it can be embedded in the catalytic channel for conduction heating, which can all achieve the heating of the catalyst and have high flexibility.

[0024] 6. It can be understood that the activity of the catalyst is closely related to the temperature. In order to ensure that the catalyst works at a suitable temperature, a temperature detecting element can be arranged to detect the temperature of the catalyst, so as to avoid that the activity of the catalyst is affected by too low temperature or the catalyst is deactivated by too high temperature, thereby more accurately regulating the temperature of the catalyst and ensuring the effective catalysis of oil fume. The probe of the temperature detecting element is arranged at the air inlet end of the catalytic channel, which can ensure the accuracy of temperature measurement and avoid interfering with the airflow.

[0025] 7. The cooking appliance is provided with a side air duct on the side of the cooking cavity, and an upper air duct is arranged above the catalytic module and communicates with the side air duct. A fan is arranged in the side air duct. The fan can accelerate the airflow containing oil fume flowing out of the cooking cavity to flow into the side air duct, and then flow into the catalytic channel through the upper air duct, so as to ensure the circulation efficiency of the airflow and improve the heating efficiency in the cooking cavity.

[0026] In order to make the air flow flowing into the upper air duct evenly flow into each catalytic channel, a plurality of flow guide ribs are arranged in the upper air duct along the length direction of the catalytic module, a flow guide channel is formed between adjacent flow guide ribs, the flow guide channel extends along the width direction of the catalytic module, the air flow flowing into the upper air duct flows into the catalytic channel through each flow guide channel, the flow guide ribs guide the air flow, the air flow is dispersed to each flow guide channel, the air flow can evenly flow into each catalytic channel, the air flow can be prevented from accumulating, the oil fume can be ensured to fully contact with the catalyst, and the catalytic efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:

[0028] Figure 1 It is an internal sectional view of the cooking utensil under an embodiment of the present application.

[0029] Figure 2 It is an enlarged view of the structure at A in FIG. Figure 1

[0030] Figure 3 It is a schematic view of the catalytic channel under an embodiment of the present application.

[0031] Figure 4 It is a structural schematic view of the catalytic module under an embodiment of the present application.

[0032] Figure 5 It is a schematic view when the heating sheet is not loaded into the catalytic module under an embodiment of the present application.

[0033] Figure 6 It is a schematic view of the arrangement of the side air duct and the upper air duct in the cooking utensil under an embodiment of the present application.

[0034] Figure 7 It is a structural schematic view of the top plate in FIG. Figure 6

[0035] Reference signs:

[0036] 10, cooking cavity; 11, catalytic module; 12, catalytic channel; 121, air inlet channel; 122, main channel; 123, air outlet channel; 13, heating pipe; 14, heating sheet; 15, temperature detecting element; 16, side air duct; 17, upper air duct; 18, fan; 19, flow guide rib; 20, flow guide channel; 21, top plate; 211, air baffle; 22, mounting bracket. DETAILED DESCRIPTION

[0037] ​​In order to more clearly illustrate the overall concept of the utility model, the following will be described in detail in an exemplary manner combined with the accompanying drawings.

[0038] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the following will be further described in detail in combination with the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0039] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, however, the utility model can also be implemented in other ways different from those described herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.

[0040] In addition, in the description of the utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0041] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0042] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. However, it is noted that direct connection means that the connection between the two main bodies does not form a connection relationship through a transition structure, but is connected only through a connection structure to form a whole. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0044] As shown in Figures 1 to 7 The present application provides a cooking appliance catalyzed by oil fume, which comprises a cooking cavity 10 and a catalytic module 11. The catalytic module 11 can catalytically decompose oil fume close to and / or flowing therethrough. The catalytic module 11 is provided with a catalytic channel 12, which is in communication with the cooking cavity 10. The catalytic channel 12 extends along the airflow direction in the catalytic channel 12 at least partially in the form of a broken line.

[0045] The cooking appliance is, for example, an air fryer or an oven. During the working process of the cooking appliance, some oil fume is generated with the heating of food in the cooking cavity 10. The catalytic decomposition of the oil fume can heat the food with pure hot air to ensure the taste of the food, and can also avoid the generation of irritating odor when the oil fume is discharged to the outside, thereby affecting the mood of the user. By making the oil fume flow through the catalytic module 11, the catalytic module 11, for example, comprises a carrier and a catalyst coated on the carrier. When the oil fume flows through the catalytic module 11, it contacts the catalyst and is decomposed into water, carbon dioxide, etc., thereby achieving airflow purification. The carrier has a porous structure. The present application improves the internal pore structure to increase the contact area between the oil fume and the catalyst, thereby improving the catalytic efficiency. The catalytic efficiency mentioned in the present application specifically refers to the catalytic decomposition efficiency of the catalyst on the oil fume.

[0046] The catalytic channel 12 of the common catalytic module 11 has a straight hole structure, and the path of the channel is short. The contact area between the oil fume and the inner surface of the catalytic channel 12 is small, resulting in low overall catalytic efficiency. As shown in Figure 2 The present application adopts a catalytic channel 12 at least partially in the form of a broken line, which greatly extends the path of the catalytic channel 12, which is beneficial to increase the contact area between the oil fume and the inner surface of the catalytic channel 12, thereby improving the catalytic efficiency, increasing the hot air flow purified per unit time, and thereby improving the heating efficiency of the food in the cooking cavity 10.

[0047] As shown in Figure 1As shown, the catalytic channel 12 is vertically arranged, and the more bends the catalytic channel 12 has within a certain height range, the longer the path is, and the more conducive to improving the catalytic efficiency. However, considering the flow direction of the air flow upstream and / or downstream of the catalytic channel 12, the two ends of the catalytic channel 12 can be set in a suitable direction according to the actual situation to ensure smooth circulation of the air flow in the cooking utensil.

[0048] As a preferred embodiment, along the direction of the air flow in the catalytic channel 12, the catalytic channel 12 includes an air inlet channel 121, a main channel 122 and an air outlet channel 123 which are sequentially communicated, the air inlet channel 121 and the air outlet channel 123 are linearly extended, and the main channel 122 is extended in a zigzag shape from the air inlet channel 121 to the air outlet channel 123.

[0049] Specifically, as shown in Figure 1 and Figure 2 , the catalytic channel 12 extends vertically, the upper part of the catalytic module 11 is provided with an upper air duct 17, and the lower part of the catalytic module 11 is provided with a cooking cavity 10. The air flow containing oil fume flows into the catalytic channel 12 through the upper air duct 17, and the oil fume is catalytically decomposed during the flow process, so that the purified hot air can flow into the cooking cavity 10 to heat the food. The linearly extended air inlet channel 121 can accommodate the wind direction of the upper air duct 17, and the air flow in the upper air duct 17 blows directly into the catalytic channel 12, ensuring smooth air inlet. At the same time, the linearly extended air outlet channel 123 not only facilitates smooth air outlet, but also allows the purified air flow to flow into the cooking cavity 10 opposite to the catalytic module 11, improving the air inlet efficiency in the cooking cavity 10, thereby improving the heating efficiency of the food in the cooking cavity 10. Further, the main channel 122 extends in a zigzag shape, which is beneficial to making the oil fume fully contact with the catalyst to be decomposed, thereby improving the catalytic efficiency.

[0050] In order to ensure the contact area of the oil fume and the catalyst and ensure the catalytic efficiency, the main channel 122 is bent at least twice to satisfy that most of the passing oil fume is decomposed, for example, under the structure that the main channel 122 is bent twice, the oil fume decomposition rate can reach 98%. It can be understood that the more times the main channel 122 is bent, the more sufficient the oil fume decomposition is.

[0051] For the same catalytic channel 12, the air inlet channel 121 and the air outlet channel 123 can be aligned or staggered, and in the limited radial space, in order to distribute more catalytic channels 12, the air inlet channel 121 and the air outlet channel 123 are preferably aligned, which can increase the number of catalytic channels 12, improve the hot air flow rate purified per unit time, and thereby improve the heating efficiency of the food in the cooking cavity 10.

[0052] In a preferred embodiment, as shown in Figure 1 and Figure 2As shown, the main channel 122 is bent twice and the bending directions are opposite, so that the air inlet channel 121 and the air outlet channel 123 communicating with the main channel 122 are arranged opposite to each other. By arranging the air inlet channel 121 and the air outlet channel 123 in alignment, more catalytic channels 12 can be arranged along the width direction of the cooking appliance, the air flow is dispersed into each air inlet channel 121, flows through the main channel 122, and then flows out of each air outlet channel 123. The directions of the air inlet and the air outlet are opposite to each other, so that the overall air flow distribution is more orderly and smooth.

[0053] In order to avoid that the inner diameter of the catalytic channel 12 is too large and a part of the air flow flows out without contacting the inner surface of the catalytic channel 12, as a preferred embodiment, the inner diameter of the catalytic channel 12 can be designed to be variable. By reducing the inner diameter of the catalytic channel 12 along the direction of the air flow in the catalytic channel 12, the oil fume can be effectively contacted with the inner surface of the catalytic channel 12. At the same time, the inner diameter of the inlet of the catalytic channel 12 is relatively large, which can ensure smooth air flow.

[0054] Specifically, in one embodiment, as shown in Figure 3 The inner diameter of the catalytic channel 12 gradually decreases from the inlet to the outlet. In another embodiment, the inner diameter of the upper part of the catalytic channel 12 is larger than that of the lower part. The sudden change of the inner diameter is beneficial for processing.

[0055] As a preferred embodiment, as shown in Figure 4 The catalytic module 11 includes a plurality of catalytic channels 12, which are arranged in an array. This is beneficial for arranging more catalytic channels 12 in a limited space, thereby improving the overall catalytic efficiency and the flow of hot air purified per unit time, thereby improving the heating efficiency of the food in the cooking cavity 10.

[0056] Further, the catalytic module 11 can be mounted on a mounting bracket 22 to be mounted on the related structure in the cooking appliance through the mounting bracket 22. The mounting bracket 22 is, for example, a hollow structure from top to bottom, so that the air inlet end and the air outlet end of the catalytic channel 12 are in communication with the outside.

[0057] In order to provide a suitable catalytic temperature, the cooking appliance is provided with a heating member which can heat the catalytic module 11, so that the catalyst can obtain a suitable temperature to maintain good activity and improve the catalytic efficiency. Specifically, the heating member can have different forms. For example, in one embodiment, as shown in Figure 1 The heating member is a heating pipe 13 arranged above the catalytic module 11. The heating pipe 13 radiates heat to the catalyst, which meets the working temperature requirement of the catalyst. The heating pipe 13 and the catalytic module 11 are independently installed, which is convenient to use.

[0058] In another embodiment, as shown in Figure 5 The heating piece 14 is embedded in the catalytic channel 12, which can conductively heat the catalyst, has relatively high heating efficiency, and is integrated on the catalytic module 11, so that the installation step can be omitted and the installation process is simplified.

[0059] It can be understood that the activity of the catalyst is closely related to the temperature. In order to ensure that the catalyst works at a suitable temperature, the temperature detecting element 15 can be arranged to detect the temperature of the catalyst, so as to avoid the influence of low temperature on the activity of the catalyst or the deactivation caused by high temperature, thereby more accurately regulating the temperature of the catalyst and ensuring the effective catalysis of the oil fume.

[0060] As a preferred embodiment, the cooking appliance comprises a temperature detecting element 15, and the probe of the temperature detecting element 15 is arranged at the air inlet end of the catalytic channel 12. As shown in Figure 1 The probe of the temperature detecting element 15 is arranged at the air inlet end of the catalytic channel 12, which can ensure the accuracy of temperature measurement and avoid interference with the airflow. Further, the cooking appliance is provided with a control panel, the probe can feed back the temperature of the catalyst to the control panel, and the control panel can adjust the temperature of the heating piece, so that the catalyst works at a suitable temperature. In Figure 1 the embodiment, the heating pipe 13 is provided with two heating pipes, and the control panel can control the two heating pipes 13 to work at the same temperature, so that the catalyst at each position covered by the heating pipe 13 is uniform in temperature, and the catalytic efficiency of the entire catalytic module 11 is ensured. It can be understood that the number of heating pipes 13 can be arranged according to the size of the catalytic module 11, and preferably the heating pipe 13 covers all the catalytic channels 12 to ensure the uniformity of heating.

[0061] As a preferred embodiment, the cooking appliance comprises a housing, the catalytic module 11 and the cooking cavity 10 are arranged in the housing in sequence from top to bottom, the housing is further provided with a side air duct 16 communicating with the cooking cavity 10 and an upper air duct 17 communicating with the side air duct 16 and located above the catalytic module 11, and the side air duct 16 is provided with a fan 18. The airflow containing oil fume in the cooking cavity 10 flows into the side air duct 16 and then flows into the catalytic channel 12 through the upper air duct 17 under the driving of the fan 18.

[0062] Figure 1 The direction of airflow in the cooking appliance is shown. By arranging the fan 18, the fan 18 can accelerate the airflow containing oil fume flowing out of the cooking cavity 10 into the side air duct 16, and then into the catalytic channel 12 through the upper air duct 17, which ensures the circulation efficiency of the airflow and is beneficial to improve the heating efficiency in the cooking cavity 10.

[0063] Further, the upper air duct 17 is provided with a plurality of guide ribs 19 arranged along the length direction of the catalytic module 11 at intervals, and a guide channel 20 is formed between adjacent guide ribs 19, the guide channel 20 extends along the width direction of the catalytic module 11, and the air flow flowing into the upper air duct 17 flows into the catalytic channel 12 through each guide channel 20.

[0064] As shown in Figure 6 and Figure 7 shown, the air flow is dispersed into each guide channel 20 by the guide ribs 19, and the air flow can uniformly flow into each catalytic channel 12, so that the air flow is prevented from accumulating, the oil fume can fully contact with the catalyst, and the catalytic efficiency is improved.

[0065] As shown in Figure 7 shown, the guide ribs 19 are formed by extending downward from the lower surface of the top plate 21, the air flow flowing out of the side air duct 16 flows into the guide channel 20 after a certain turning at the inlet of the guide channel 20, and the air flow flows downward into each catalytic channel 12 in the process of flowing along the guide channel 20, so that the air flow distribution is improved, the air flow accumulation is effectively prevented, the air inlet efficiency of the catalytic channel 12 is ensured, and the catalytic efficiency is improved. The rear end of the guide channel 20 is further provided with a baffle 211, which can prevent air leakage and is beneficial to guide the air flow in the guide channel 20 to fully flow into the catalytic channel 12, so as to ensure the air inlet efficiency of the catalytic channel 12 and improve the catalytic efficiency.

[0066] The technical scheme of the utility model is not limited to the above embodiment, it should be pointed out that the technical scheme of any one embodiment and the technical scheme of one or more other embodiments are combined in the protection scope of the utility model. Although the utility model has been described in detail by general description and specific embodiments above, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the protection scope of the utility model.

Claims

1. A cooking appliance with catalytic decomposition of oil fume, comprising a cooking cavity and a catalytic module capable of catalytically decomposing oil fume close to and / or flowing through the catalytic module, characterized in that, a catalytic passage is arranged in the catalytic module, the catalytic passage is in communication with the cooking cavity, and the catalytic passage extends along the direction of airflow in the catalytic passage in a zigzag shape.

2. The cooking appliance with catalytic decomposition of oil fume according to claim 1, characterized in that, along the direction of airflow in the catalytic passage, the catalytic passage comprises an air inlet passage, a main passage and an air outlet passage in sequence, the air inlet passage and the air outlet passage extend in a straight line, and the main passage extends in a zigzag shape from the air inlet passage to the air outlet passage.

3. The cooking appliance with catalytic decomposition of oil fume according to claim 2, characterized in that, the main passage is bent at least twice.

4. The cooking appliance with catalytic decomposition of oil fume according to claim 2, characterized in that, the main passage is bent twice, and the directions of the two bends are opposite, so that the air inlet passage and the air outlet passage in communication with the main passage are arranged opposite to each other.

5. The cooking appliance with catalytic decomposition of oil fume according to claim 1, characterized in that, along the direction of airflow in the catalytic passage, the inner diameter of the catalytic passage decreases.

6. The cooking appliance with catalytic decomposition of oil fume according to claim 1, characterized in that, the catalytic module comprises a plurality of catalytic passages, and the plurality of catalytic passages are arranged in an array.

7. The cooking appliance with catalytic decomposition of oil fume according to claim 1, characterized in that, the cooking appliance comprises a heating element, the heating element is a heating pipe arranged above the catalytic module, or the heating element is a heating sheet embedded in the catalytic passage.

8. The cooking appliance with catalytic decomposition of oil fume according to claim 1, characterized in that, the cooking appliance comprises a temperature detecting element, and a probe of the temperature detecting element is arranged at an air inlet end of the catalytic passage.

9. The cooking appliance with catalytic decomposition of oil fume according to claim 1, characterized in that, the cooking appliance comprises a housing, the catalytic module and the cooking cavity are arranged in the housing in sequence from top to bottom, the housing further comprises a side air duct in communication with the cooking cavity and an upper air duct above the catalytic module in communication with the side air duct, and a fan is arranged in the side air duct, so that the airflow containing oil fume in the cooking cavity flows through the side air duct and the upper air duct in sequence under the driving of the fan and then flows into the catalytic passage.

10. The cooking appliance with catalytic decomposition of oil fume according to claim 9, characterized in that, a plurality of flow guide ribs are arranged in the upper air duct along the length direction of the catalytic module, a flow guide passage is formed between adjacent flow guide ribs, the flow guide passage extends along the width direction of the catalytic module, and the airflow flowing into the upper air duct flows into the catalytic passage through each flow guide passage.

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