Oil fume purification device and cooking appliance

Abstract

The present application discloses an oil fume purification device and a cooking appliance. The oil fume purification device comprises a mounting housing and a purification assembly; the mounting housing is configured to be mounted in the cooking appliance, the mounting housing is internally provided with a ventilation cavity and a purification cavity, the ventilation cavity is configured to be communicated with an assembly space in the cooking appliance, and the purification cavity is configured be communicated with a cooking space in the cooking appliance; the purification assembly is arranged in the purification cavity and is configured to catalytically degrade oil fume generated by the cooking appliance.

Description

Oil fume purification devices and cooking utensils

[0001] This application claims priority to Chinese patent application No. 202410159071.X filed on February 4, 2024, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of cooking equipment, and in particular to an oil fume purification device and a cooking utensil. Background Art

[0003] In related technologies, cooking appliances such as air fryers and ovens are favored by more and more consumers due to their advantages such as convenient operation and uniform heating, meeting users' needs for easy cooking and enjoying delicious food.

[0004] However, cooking appliances such as air fryers and ovens generate a large amount of volatile fumes during cooking. Directly discharging these fumes into the environment can cause air pollution. Existing cooking appliances typically incorporate fume purification coatings or devices within the cooking cavity to purify and degrade the fumes generated during cooking.

[0005] However, when a purification coating or purification device is provided in the cooking cavity to purify the oil fume, some of the oil fume may escape and be discharged without being purified, resulting in poor oil fume purification effect of the cooking appliance; and the high-temperature airflow after purification flows back to the interior of the cooking appliance, causing the components in the cooking appliance to be easily affected by the high-temperature airflow, thereby reducing the practicality and reliability of the cooking appliance. Technical issues

[0006] The main purpose of this application is to provide an oil fume purification device and a cooking utensil, aiming to use the oil fume purification device to achieve oil fume purification and heat dissipation airflow discharge of the cooking utensil, reduce the impact of the oil fume generated by the cooking utensil during the cooking process on the air in the external environment, and improve the practicality and reliability of the oil fume purification device. Technical Solutions

[0007] To achieve the above-mentioned purpose, the oil fume purification device proposed in this application includes an installation shell and a purification component. The installation shell is used to be installed in a cooking utensil. The installation shell is provided with a ventilation cavity and a purification cavity which are independent of each other. The ventilation cavity is used to connect with the assembly space in the cooking utensil, and the purification cavity is used to connect with the cooking space in the cooking utensil. The purification component is arranged in the purification cavity and is used to catalytically degrade the oil fume generated by the cooking utensil.

[0008] In one embodiment, a heat dissipation duct is formed in the ventilation cavity, and a purification duct is formed in the purification cavity. The cross-sectional area of ​​the heat dissipation duct is defined as S1, and the cross-sectional area of ​​the purification duct is defined as S2, and 0.2≤S1 / S2≤5.

[0009] In one embodiment, the mounting housing includes an upper housing and a lower housing, the upper housing is provided with the ventilation cavity, the lower housing is provided with the purification cavity, and the upper housing is detachably connected to the lower housing. Alternatively, the mounting housing is an integrally formed structure.

[0010] In one embodiment, the operating temperature of the purification component is defined as T, which satisfies the relationship: 80°C≤T≤400°C.

[0011] In one embodiment, the oil fume purification device is further provided with a heating mechanism, which is disposed in the purification chamber and is used to heat the purification component.

[0012] In one embodiment, the oil fume purification device is further provided with an interception net, and the interception net is provided at the inlet of the purification chamber and / or the outlet of the purification chamber.

[0013] In one embodiment, the number of meshes of the interception net is defined as A, satisfying the relationship: 50≤A≤100. And / or, the thickness of the interception net is defined as W, satisfying the relationship: 0.2mm≤W≤2mm.

[0014] In one embodiment, a support member is provided on the periphery of the purification component, and the support member is used to abut against the inner wall of the purification chamber to support and fix the purification component.

[0015] In one embodiment, the purification component includes an air-permeable carrier and a catalyst. The catalyst is loaded on the air-permeable carrier, and the catalyst is used to catalytically degrade the oil smoke generated by the cooking utensil.

[0016] In one embodiment, the catalyst is formed by doping an alkali metal or a precious metal into manganese oxide, wherein the alkali metal is one or more of potassium, calcium, magnesium, aluminum, zinc, copper, iron, cerium, barium, cobalt, titanium, zirconium, nickel, vanadium, lanthanum, and tungsten, and the precious metal is one or more of gold, platinum, silver, palladium, rhodium, and ruthenium.

[0017] In one embodiment, the breathable carrier is provided with a plurality of through holes penetrating the breathable carrier, the volume of the breathable carrier is defined as V, the horizontal plane where the through holes of the breathable carrier are located is defined as the longitudinal section, the area of ​​the longitudinal section is S, and V and S satisfy the relationship: 0.2 cm ≤ V / S ≤ 5 cm.

[0018] The present application also proposes a cooking utensil, which includes a cooking body and an oil fume purification device. The oil fume purification device is the oil fume purification device described above. The oil fume purification device is connected to the cooking body and is used to purify the oil fume generated in the cooking body.

[0019] In one embodiment, the cooking appliance further comprises a housing, wherein the housing defines an assembly space, the cooking body is disposed within the assembly space, the cooking body defines a cooking space, and the cooking body is provided with a smoke exhaust port communicating with the cooking space. The fume purification device is disposed between the housing and the cooking body and communicates with the assembly space and the smoke exhaust port, respectively.

[0020] In one embodiment, the cooking body includes a cooking container and an upper cover body, the upper cover body is arranged to cover the cooking container and enclose the cooking space, the upper cover body is provided with the smoke exhaust port, and the oil fume purification device is arranged between the upper cover body and the outer shell and covers the smoke exhaust port.

[0021] In one embodiment, a receiving groove is formed in the upper cover body, the cooking body is provided with a fan and a heating component, the fan and the heating component are arranged in the receiving groove, the fan is arranged between the heating component and the bottom wall of the receiving groove, and the side wall of the receiving groove is provided with the smoke exhaust port.

[0022] In one embodiment, the cooking body is defined as having a height direction, the distance between the fan and the bottom wall of the accommodating tank along the height direction is defined as D1, and the distance between the heating component and the bottom wall of the accommodating tank along the height direction is defined as D2, and D1 and D2 satisfy the relationship: D1 / D2≤1.

[0023] In one embodiment, the following relationships are satisfied: 0.2 cm ≤ D1 ≤ 2 cm; and / or, 0.5 cm ≤ D2 ≤ 5 cm; and / or, 0.1 ≤ D1 / D2 ≤ 0.5.

[0024] In one embodiment, the distance between the smoke exhaust port and the bottom wall of the accommodating groove along the height direction is defined as D3, and D3 and D2 satisfy the relationship: D3 / D2≤1.

[0025] In one embodiment, the following relationships are satisfied: D3≤4 cm; and / or, 0.1≤D3 / D2≤0.5.

[0026] In one embodiment, the distance between the smoke exhaust port and the fan in the height direction is defined as H, which satisfies the relationship: H≤5 cm.

[0027] In one embodiment, the cooking body is defined to have a horizontal direction, the distance between the smoke exhaust port and the edge of the fan blade adjacent to the smoke exhaust port along the horizontal direction is defined as L1, and the distance between the smoke exhaust port and the edge of the heating component adjacent to the smoke exhaust port along the horizontal direction is defined as L2, and L1 and L2 satisfy the relationship: L1≥L2, and 1≤L1 / L2≤2.

[0028] In one embodiment, the following relationship is satisfied: 0.5 cm ≤ L1 ≤ 10 cm; and / or, L2 ≤ 10 cm. Beneficial effects

[0029] The technical solution of this application forms a ventilation cavity and a purification cavity within the mounting housing of the fume purification device, connects the ventilation cavity to the assembly space of the cooking appliance, and achieves heat dissipation of components within the cooking appliance through airflow. Furthermore, the purification cavity connects to the cooking space of the cooking appliance, and a purification component is provided within the purification cavity to catalytically degrade the discharged fume. This purifies and discharges the fume generated within the cooking appliance, allowing the cooking appliance to utilize the external fume purification device to achieve sufficient catalytic purification of the fume, reducing the amount of unpurified fume discharged into the environment and improving the fume purification effect of the cooking appliance. Furthermore, the solution can better prevent the backflow of high-temperature exhaust gas into the assembly space, reducing the impact of high temperature on components within the assembly space, ensuring stable heat dissipation of the components within the cooking appliance, and thus ensuring stable and reliable operation of the cooking appliance, thereby improving the practicality and reliability of the fume purification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0031] FIG1 is a schematic structural diagram of an embodiment of a cooking appliance of the present application;

[0032] FIG2 is a flow diagram of oil smoke and heat dissipation airflow in the cooking appliance of FIG1 ;

[0033] FIG3 is a schematic diagram of a partial structure of an embodiment of the cooking utensil of FIG1 ;

[0034] FIG4 is a partial structural diagram of another embodiment of the cooking appliance of FIG1 ;

[0035] FIG5 is an exploded view of the cooking main body and the oil fume purification device of the cooking appliance of FIG1 ;

[0036] FIG6 is a longitudinal sectional view of an embodiment of the oil fume purification device of the present application;

[0037] FIG. 7 is a structural exploded view of an embodiment of the oil fume purification device of FIG. 6 .

[0038] Description of Figure Numbers:

[0039] Reference numerals: Reference numerals: 100 cooking utensil 30 cooking body 10 oil fume purification device 31 cooking container 11 mounting shell 33 upper cover 111 upper shell 331 smoke exhaust port 1111 ventilation cavity 333 receiving groove 113 lower shell 35 cooking space 1131 purification cavity 37 fan 13 purification assembly 39 heating component 15 heating mechanism 50 outer shell 17 interception net 51 assembly space

[0040] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0045] Cooking appliances such as air fryers and ovens produce a large amount of volatile oil smoke during the cooking process. If the oil smoke is directly discharged into the environment, it will cause a certain amount of air pollution. Existing cooking appliances can usually be equipped with an oil smoke purification coating or purification device in the cooking cavity of the cooking appliance to purify and degrade the oil smoke generated during the cooking process. However, when a purification coating or purification device is installed in the cooking cavity to purify the oil smoke, it is easy for some oil smoke to escape and be discharged without being purified, resulting in poor oil smoke purification effect of the cooking appliance; and the high-temperature airflow after purification flows back to the interior of the cooking appliance, causing the components in the cooking appliance to be easily affected by the high-temperature airflow, reducing the practicality and reliability of the cooking appliance. In response to the above problems, the present application proposes an oil fume purification device 10.

[0046] 1 to 7 , in an embodiment of the present application, the oil fume purification device 10 includes an installation shell 11 and a purification component 13. The installation shell 11 is used to be installed in a cooking utensil 100. A ventilation cavity 1111 and a purification cavity 1131 are provided in the installation shell 11. The ventilation cavity 1111 is used to connect to the assembly space 51 in the cooking utensil 100, and the purification cavity 1131 is used to connect to the cooking space 35 in the cooking utensil 100. The purification component 13 is provided in the purification cavity 1131 and is used to catalytically degrade the oil fume generated by the cooking utensil 100.

[0047] It is understood that the oil fume purification device 10 can be mounted on the housing of a cooking appliance 100. By providing a ventilation cavity 1111 and a purification cavity 1131 in the mounting housing 11 of the oil fume purification device 10, a ventilation cavity inlet 1111 and a ventilation cavity outlet 1111 can be respectively provided on opposite or adjacent sides of the mounting housing 11, connecting to the ventilation cavity 1111. Furthermore, a purification cavity inlet 1131 and a purification cavity outlet 1131 can be respectively provided on opposite or adjacent sides of the mounting housing 11. Furthermore, the oil fume purification device 10 can be mounted on the cooking appliance 100 to form the air outlet of the cooking appliance 100, allowing the cooking appliance 100 to discharge fumes generated during cooking and heat dissipation airflow from components within the cooking appliance 100 through the oil fume purification device 10, thereby ensuring stable operation of the cooking appliance 100. The oil fume purification device 10 can form a mutually independent ventilation chamber 1111 and purification chamber 1131 in the mounting housing 11, thereby enabling the ventilation chamber 1111 and purification chamber 1131 to form two independent airflow channels, thereby ensuring the stable discharge of the heat dissipation airflow and the purified oil fume airflow of the cooking appliance 100. Alternatively, the mounting housing 11 can form an exhaust channel connecting the ventilation chamber 1111 and the purification chamber 1131, thereby achieving a connected exhaust of the ventilation chamber 1111 and the purification chamber 1131, so that the heat dissipation airflow and the purified oil fume airflow enter the exhaust channel for discharge, thereby achieving the centralized exhaust function of the oil fume purification device 100.

[0048] The cooking appliance 100 may include an assembly space 51 and a cooking space 35. The cooking space 35 may house various components of the cooking appliance 100 used to heat and cook food, such as a heating element 39 and a fan 37. The assembly space 51 may house various components used to control the cooking appliance 100, such as a control circuit system and a drive motor. The assembly space 51 is independently separated from the cooking space 35 so that the components in the two spaces can cooperate with each other to ensure stable cooking operations within the cooking appliance 100. The cooking appliance 100 may also include a smoke exhaust port 331 connected to the cooking space 35 to allow fumes generated during cooking operations within the cooking space 35 to be discharged through the smoke exhaust port 331. During the operation of the cooking appliance 100, part of the heat in the cooking space 35 is easily transferred to the assembly space 51 through the inner wall of the cooking appliance 100. When the various components in the assembly space 51 are in operation, a certain amount of heat is also generated. Therefore, a cooling fan can be provided in the assembly space 51 to perform turbulent heat dissipation to reduce the accumulation of heat in the assembly space 51 and the impact on the normal operation of the cooking appliance 100.

[0049] Furthermore, in the present application, the cooking appliance 100 can cover the exhaust port 331 with the inlet of the purification chamber 1131 of the fume purification device 10, so that the purification chamber 1131 is connected to the cooking space 35 through the exhaust port 331, and at least part of the structure of the installation shell 11 is set in the assembly space 51, so that the assembly space 51 is connected to the ventilation chamber 1111. At this time, the purification chamber 1131 outlet and the ventilation chamber 1111 outlet of the fume purification device 10 can be exposed on the outer shell wall of the cooking appliance 100, so that the fume gas generated in the cooking space 35 can be discharged to the outside of the cooking appliance 100 through the purification chamber 1131, and the disturbed heat dissipation airflow in the assembly space 51 can be discharged to the outside of the cooking appliance 100 through the ventilation chamber 1111, thereby realizing the separate and independent discharge of the smoke and the heat dissipation airflow of the cooking appliance 100, effectively avoiding the backflow of smoke into the assembly space 51 during the smoke discharge process, preventing the components in the assembly space 51 from being affected by the high-temperature smoke, and ensuring the stable operation of the cooking appliance 100.

[0050] A purification component 13 is provided in the purification chamber 1131. The purification component 13 can be a breathable carrier with a catalyst attached and infiltrated thereon. The breathable carrier can have multiple through-holes and pores, and can specifically be one or more composite substrates selected from the group consisting of through-hole foam, honeycomb ceramics, honeycomb metal, through-hole metal mesh, glass fiber, ceramic fiber, or carbon fiber. The catalyst can be formed by mixing a binder with an active catalytic oxidizing material containing manganese oxide, so that the catalyst can be adhered and fixed to the breathable carrier using the adhesive properties of the binder, and the active catalytic oxidizing material is exposed on the surface of the breathable carrier; alternatively, the active catalytic oxidizing material containing manganese oxide in the catalyst can be deposited and loaded on the breathable carrier using an in-situ growth method. The active catalytic oxidizing material can be used as a sediment, and the sediment can be self-assembled under high temperature or high pressure conditions and deposited and fixed on the surface of the breathable carrier to achieve the preparation of the purification component 13, thereby ensuring the stable loading of the catalyst on the breathable carrier. The manganese oxide in the active catalytic oxidizing material can be a nano-polycrystalline metal oxide catalyst formed by doping an alkali metal or a precious metal into the manganese oxide lattice. The alkali metal can be one or more of potassium, calcium, magnesium, aluminum, zinc, copper, iron, cerium, barium, cobalt, titanium, zirconium, nickel, vanadium, lanthanum, and tungsten. The precious metal can be one or more of gold, platinum, silver, palladium, rhodium, and ruthenium. When the oil smoke passes through the purification component 13 and contacts the purification component 13, the heat carried by the oil smoke can promote a catalytic oxidation reaction between pollutants such as oil molecules in the oil smoke and the catalyst containing the manganese oxide, so that the pollutants can be degraded into substances such as carbon dioxide and water under the action of the purification component 13, thereby achieving catalytic degradation of pollutants in the oil smoke and realizing the catalytic degradation effect of the purification component 13 on the oil smoke.

[0051] In addition, the horizontal plane where the through holes of the breathable carrier are located is defined as the longitudinal section, and the volume V of the breathable carrier and the longitudinal section area S of the breathable carrier can satisfy the relationship of 0.2cm≤V / S≤5cm, wherein the longitudinal section area S of the breathable carrier can be the surface area of ​​the side of the breathable carrier that is in direct contact with the oil fume airflow. According to the volume formula and area formula of the structural material, it can be known that the ratio range between V and S can be expressed as the width of the breathable carrier in the horizontal direction. Further, within this range, it can be ensured that the breathable carrier has good installation performance and purification effect on the oil fume airflow. Among them, by making V / S ≥ 0.2 cm, within this range, the air permeable carrier can have a certain horizontal thickness, so that the oil fume airflow can be fully retained in the air permeable carrier when passing through the air permeable carrier and fully react and purify the catalyst attached to the air permeable carrier, thereby ensuring the sufficient purification effect of the oil fume airflow by the purification component 10; and by making V / S ≤ 5 cm, within this range, the air permeable carrier can have a certain horizontal thickness to ensure the purification effect of the oil fume airflow, while avoiding the overall horizontal thickness of the air permeable carrier being too large, which can be beneficial to the lightweight design of the purification component 13, and at the same time, it can avoid the oil fume airflow from staying in the thicker air permeable carrier for a long time, which has a certain probability of causing the oil fume airflow to have too low a flow rate after passing through the air permeable carrier, thereby ensuring that the oil fume airflow can smoothly pass through the purification component 13 and be stably discharged into the environment after being purified by the purification component 13, thereby further improving the structural stability and reliability of the purification component 13. In one embodiment, the ratio of the volume V of the air permeable carrier to the longitudinal cross-sectional area S of the air permeable carrier 11 can satisfy the range of 1cm≤V / S≤3cm. Within this range, the horizontal thickness of the air permeable carrier can be better within a better structural size range, thereby enabling the purification component 13 to better catalytically purify the oil fume airflow, and making the purification component 13 less obstructive to the oil fume airflow, better satisfying the lightweight design of the purification component 13 in the cooking utensil 100, and further improving the practicality and reliability of the purification component 13.

[0052] Therefore, by filling the purification chamber 1131 with the purification assembly 13, when the smoke generated within the cooking appliance 100 is discharged through the purification chamber 1131, the pollutants in the smoke react with the purification assembly 13 and degrade them, effectively reducing the oil fume pollutants in the airflow discharged at the outlet of the purification chamber 1131. This, in turn, reduces the emission of oil fume substances from the cooking appliance 100 into the environment, thereby achieving the oil fume purification function of the cooking appliance 100 and improving the practicality and reliability of the cooking appliance 100. Since the oil fume generated within the cooking appliance 100 is discharged through the exhaust port 331, installing a cover on the exhaust port 331 by the oil fume purification device 10 can achieve more comprehensive and reliable catalytic degradation of the oil fume generated by the cooking appliance 100, further improving the oil fume purification effect of the cooking appliance 100 and reducing the harm of oil fume to human health. In addition, the fume purification device 10 is used to form independent ventilation chambers 1111 and purification chambers 1131 to respectively realize the fume purification discharge and heat dissipation airflow discharge of the cooking utensil 100, so that the airflow outlet of the cooking utensil 100 can be integrated and the area occupied by the two airflow outlets of the cooking utensil 100 can be reduced, which is conducive to better realizing the compact layout of the cooking utensil 100, reducing the overall volume of the cooking utensil 100, and further improving the practicality and reliability of the cooking utensil 100.

[0053] In one embodiment of the present application, a heat dissipation duct is formed in the ventilation cavity 1111, and a purification duct is formed in the purification cavity 1131. The cross-sectional area of ​​the heat dissipation duct is defined as S1, and the cross-sectional area of ​​the purification duct is defined as S2, and 0.2≤S1 / S2≤5.

[0054] In this embodiment, the ventilation cavity 1111 can be formed as a heat dissipation duct in the part through which the heat dissipation airflow flows, and the purification cavity 1131 can be formed as a purification duct in the part through which the oil fume airflow flows. At this time, by making the ratio of the duct cross-sectional area S1 of the heat dissipation duct to the duct cross-sectional area S2 of the purification duct satisfy the relationship: 0.2≤S1 / S2≤5, the heat dissipation duct of the ventilation cavity 1111 and the purification duct of the purification cavity 1131 can ensure the coordination of the purified fume emission and the heat dissipation airflow emission of the oil fume purification device 10 within this ratio range, so that the cooking utensil 100 can better utilize the oil fume purification device 10 with a relatively compact structure to achieve stable emission of purified oil fume and heat dissipation airflow. Among them, when the ratio of the heat dissipation duct to the purification duct satisfies 1≤S1 / S2≤5, the channel cross-sectional area of ​​the heat dissipation duct is greater than or equal to the channel cross-sectional area of ​​the purification duct, which can enable the oil fume purification device 10 to better discharge the heat dissipation airflow in the assembly space 51, thereby achieving a better heat dissipation effect of the cooking utensil 100, and at the same time, it can ensure that the purification cavity 1131 has a certain airflow space, thereby ensuring the stable discharge of the purified smoke; and when the ratio of the heat dissipation duct to the purification duct satisfies 0.2≤S1 / S2<1, the channel cross-sectional area of ​​the heat dissipation duct is smaller than the channel cross-sectional area of ​​the purification duct, thereby ensuring that when the cooking utensil 100 generates a large amount of oil fume, it can be purified and discharged more quickly through the oil fume purification device 10, and at the same time, the ventilation cavity 1111 has a certain heat dissipation space for the heat dissipation airflow in the assembly space 51 to be discharged, thereby ensuring the stable operation of the cooking utensil 100. Therefore, by making the ventilation cavity 1111 and the purification cavity 1131 satisfy the above-mentioned ratio of the cross-sectional areas of the heat dissipation duct and the purification duct, and subject to the overall airflow emission limit of the oil fume purification device 10, an oil fume purification device 10 with corresponding purified smoke emission and heat dissipation airflow emission can be selected according to the usage requirements of different cooking utensils 100. For example, if the cooking utensil 100 requires better heat dissipation, an oil fume purification device 10 within the range of 1≤S1 / S2≤5 can be selected; if the cooking utensil 100 requires a larger amount of oil fume purification, an oil fume purification device 10 within the range of 0.2≤S1 / S2<1 can be selected, so that the oil fume purification device 10 can be applicable to a variety of cooking utensils 100, further improving the practicality and reliability of the cooking utensil 100.

[0055] 7 , in one embodiment of the present application, the mounting housing 11 includes an upper housing 111 and a lower housing 113 that are independent of each other. The upper housing 111 is provided with a ventilation cavity 1111, and the lower housing 113 is provided with a purification cavity 1131. The upper housing 111 is detachably connected to the lower housing 113. Alternatively, the mounting housing 11 is an integrally formed structure.

[0056] In this embodiment, the oil fume purification device 10 can form the installation shell 11 by combining an upper shell 111 and a lower shell 113 that can be detached from each other, wherein the upper shell 111 and the lower shell 113 can be detachably connected by means of snaps or bolts, and then during use, the oil fume purification device 10 can be locally maintained and cleaned by detaching and assembling the installation shell 11. At the same time, it is beneficial for the oil fume purification device 10 to be equipped with ventilation chambers 1111 and purification chambers 1131 of different volumes, so that the oil fume purification device 10 can be better applied to cooking utensils 100 with various emission requirements, further improving the practicality and reliability of the oil fume purification device 10.

[0057] Secondly, in other embodiments, the mounting shell 11 can be arranged in an integrally formed structure, and the mounting shell 11 can be formed by an integral injection molding process or a 3D printing process, so that the oil fume purification device 10 can adopt an integrally structured mounting shell 11 to better enhance the overall structural strength of the oil fume purification device 10, avoid the oil fume purification device 10 from being deformed by wind for a long time, and further improve the structural stability and reliability of the oil fume purification device 10.

[0058] In one embodiment of the present application, the operating temperature of the purification component 13 is defined as T, which satisfies the relationship: 80°C ≤ T ≤ 400°C.

[0059] In this embodiment, the manganese oxide catalytically active material contained in the purification assembly 13 may be a thermal catalytic material. This allows the purification assembly 13 to withstand the heat of the high-temperature cooking fumes generated by the cooking appliance 100 and effectively catalyze the oxidation reaction under the heat carried by the cooking fumes, thereby ensuring the catalytic purification effect of the cooking fume purification device 10. The operating temperature of the purification assembly 13 can be determined based on the properties of the manganese oxide compound. By adjusting the composition ratio of the purification assembly 13, the operating temperature T of the purification assembly 13 can be adjusted to range from 80°C to 400°C. In one embodiment, the temperature T can be adjusted to range from 140°C to 350°C. Within this temperature range, the thermal catalytic temperature of the purification assembly 13 is close to the temperature at which the cooking fumes evaporate. This allows the cooking fumes generated by the cooking appliance 100 even in a relatively low-temperature cooking environment to be effectively catalytically degraded by the purification assembly 13, thereby ensuring the purification effect of the cooking fume purification device 10. Furthermore, the reaction temperature requirement of the active catalytic oxidizing material in the purification assembly 13 is better met, ensuring the stable operation of the cooking fume purification device 10 and further improving its stability and reliability.

[0060] 6 and 7 , in one embodiment of the present application, the oil fume purification device 10 is further provided with a heating mechanism 15 . The heating mechanism 15 is provided in the purification chamber 1131 and is used to heat the purification component 13 .

[0061] In this embodiment, the oil fume purification device 10 may be provided with a heating mechanism 15 within the purification chamber 1131. The heating mechanism 15 may be a heating wire or heating tube. A wire from the heating mechanism 15 may be extended from the outside of the mounting housing 11 and connected to the energy supply system of the cooking appliance 100 to ensure stable operation of the heating mechanism 15. In this case, the heating mechanism 15 may be provided on the side of the purification assembly 13 facing the smoke exhaust port 331, or the heating mechanism 15 may be provided surrounding the purification assembly 13. This allows the heat generated by the heating mechanism 15 to radiate to the purification assembly 13, thereby better ensuring that the oil fume purification device 10 can achieve the desired reaction temperature of the purification assembly 13. This allows the heating mechanism 15 to provide a certain degree of auxiliary heating for the oil fume purification device 10. Furthermore, this ensures that the purification assembly 13 is heated to the required operating temperature during operation of the cooking appliance 100, allowing the purification assembly 13 to stably undergo a catalytic oxidation reaction with pollutant molecules in the oil fume, thereby achieving the oil fume purification effect of the oil fume purification device 10 and further improving the structural stability and reliability of the oil fume purification device 10.

[0062] 6 and 7 , in one embodiment of the present application, the oil fume purification device 10 is further provided with an interception net 17 , which is provided at the inlet of the purification chamber 1131 and / or at the outlet of the purification chamber 1131 .

[0063] In this embodiment, the oil fume purification device 10 may be provided with an interception net 17 at the entrance or exit of the purification chamber 1131. The interception net 17 may be a grid structure having multiple pores, and the pores of the interception net 17 are designed to allow only oil fume to pass through. This effectively prevents impurities such as oil residue and food debris generated in the cooking space 35 from being discharged into the environment through the purification chamber 1131 along with the oil fume airflow, thereby reducing the need for the user to clean the surface of the cooking utensil 100 after cooking. Furthermore, providing the interception net 17 at the entrance of the purification chamber 1131 also helps prevent impurities from entering the purification chamber 1131 and attaching to the purification assembly 13, thereby clogging the ventilation holes of the purification assembly 13. This ensures that the oil fume can flow smoothly through the purification assembly 13 and, after being purified by the purification assembly 13, be discharged from the outlet of the purification chamber 1131. This effectively prevents blockage of the smoke emission of the oil fume purification device 10, further improving the stability and reliability of the oil fume purification device 10. Setting an interception net 17 at the outlet of the purification chamber 1131 is also beneficial to preventing foreign matter in the external environment from entering the purification chamber 1131 and attaching to and clogging the purification component 13, affecting the stable catalytic oxidation of the purification component 13, and further improving the stability and reliability of the oil fume purification device 10.

[0064] Among them, the oil fume purification device 10 can only be equipped with an interception net 17 at the inlet or outlet of the purification chamber 1131 to prevent food impurities from being discharged into the environment along with the smoke, or an interception net 17 can be provided at both the inlet and outlet of the purification chamber 1131 to effectively reduce the entry of food impurities and foreign matter in the external environment into the purification chamber 1131, so that the purification component 13 can catalytically degrade and purify the oil fume more stably in the purification chamber 1131, thereby ensuring the stable operation of the oil fume purification device 10.

[0065] Referring to the drawings, in one embodiment of the present application, the mesh number of the interception net 17 is defined as A, satisfying the relationship: 50≤A≤100. And / or, the thickness of the interception net 17 is defined as W, satisfying the relationship: 0.2mm≤W≤2mm.

[0066] In this embodiment, the mesh size A of the interception net 17 is the number of grid holes per foot on the interception net 17. By making the mesh size A of the interception net 17 satisfy the relationship: 50≤A≤100, the interception net 17 can have a smaller mesh size within the range of A≤100, which is conducive to better isolating impurities or foreign matter from entering the purification chamber 1131; at the same time, the mesh size of the interception net 17 can be not too small within the range of A≥50, ensuring that the oil smoke can smoothly flow into or out of the purification chamber 1131 through the interception net 17, thereby realizing stable oil smoke purification and emission of the cooking utensil 100, and further improving the practicality and reliability of the oil fume purification device 10.

[0067] Secondly, by making the thickness W of the interception net 17 satisfy the relationship 0.2mm≤W≤2mm, the structural dimensions of the interception net 17 can better meet the overall setting of the oil fume purification device 10. Within the range of W≥0.2mm, the overall structural strength of the interception net 17 can be improved by increasing the thickness of the interception net 17, ensuring that the interception net 17 can withstand the airflow thrust of the flue gas, further improving the overall structural stability and reliability of the oil fume purification device 10; at the same time, within the range of W≤2mm, the thickness of the interception net 17 can be made not too large, and the space occupied by the interception net 17 on the oil fume purification device 10 can be reduced while ensuring that the interception net 17 has a certain structural strength to withstand the action of the flue gas, thereby realizing a compact layout setting of the oil fume purification device 10 and further improving the practicality of the oil fume purification device 10.

[0068] In one embodiment of the present application, a support member is provided on the periphery of the purification component 13 , and the support member is used to abut against the inner wall of the purification chamber 1131 to support and fix the purification component 13 .

[0069] In this embodiment, a support member is provided on the periphery of the purification assembly 13. The support member can be a raised structure on the periphery of the porous, air-permeable carrier of the purification assembly 13. The support member is arranged to avoid the surface area where the smoke flows through the purification assembly 13, thereby preventing the support member from interfering with the contact area between the smoke and the purification assembly 13. Under the action of the support member, the support member can be used to abut the inner wall of the purification chamber 1131 to support and fix the purification assembly 13 within the purification chamber 1131, thereby preventing the purification assembly 13 from flipping during assembly or transportation of the oil fume purification device 10, which would affect the purification effect of the purification assembly 13 on the oil fume. At the same time, the support member can be used to support and fix the purification assembly 13 in a position close to the exhaust port 331 of the cooking appliance 100, so that the oil fume entering the purification chamber 1131 can more quickly contact and react with the purification assembly 13, achieving a more stable and reliable purification effect of the oil fume purification device 10, further improving the practicality and structural reliability of the oil fume purification device 10.

[0070] The present application also proposes a cooking utensil 100, which includes a cooking body 30 and an oil fume purification device 10. The specific structure of the oil fume purification device 10 refers to the above-mentioned embodiment. Since the cooking utensil 100 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0071] Referring to Figure 1 , in one embodiment of the present application, a cooking appliance 100 further includes a housing 50, which defines an assembly space 51. A cooking body 30 is disposed within the assembly space 51. A cooking space 35 is defined within the cooking body 30, and a smoke exhaust port 331 is provided in the cooking body 30, communicating with the cooking space 35. An oil fume purification device 10 is disposed between the housing 50 and the cooking body 30, communicating with the assembly space 51 and the smoke exhaust port 331, respectively.

[0072] In this embodiment, by mounting the cooking body 30 within the assembly space 51 within the housing 50, the assembly space 51 of the housing 50 can be used to enclose and assemble the various components of the cooking appliance 100, thereby enhancing the overall structural aesthetics of the cooking appliance 100. The assembly space 51 forms a gap between the outer wall of the cooking body 30 and the inner wall of the housing 50, allowing components such as the control circuit system and drive motor of the cooking appliance 100 to be installed within this gap. This ensures that the components within the assembly space 51 and the components within the cooking space 35 work together effectively, achieving stable cooking operation of the cooking appliance 100. At this time, by providing a smoke exhaust port 331 on the outer wall of the cooking body 30 that is exposed to the assembly space 51, the oil fume purification device 10 can be positioned between the inner wall of the housing 50 and the outer wall of the cooking body 30. The inlet of the purification chamber 1131 of the oil fume purification device 10 covers the smoke exhaust port 331. This allows oil fume generated during cooking in the cooking body 30 to steadily enter the purification chamber 1131 of the oil fume purification device 10 through the smoke exhaust port 331. After catalytic degradation and purification by the purification component 13 within the purification chamber 1131, the oil fume purification device 10 is discharged into the environment through the outlet of the purification chamber 1131. Simultaneously, the ventilation chamber 1111 of the oil fume purification device 10 is exposed to the assembly space 51, allowing the heat dissipation fan in the assembly space 51 to disturb the airflow within the assembly space 51, dissipating heat within the assembly space 51 through the ventilation chamber 1111, and discharging it into the environment through the outlet of the ventilation chamber 1111, thereby achieving heat dissipation for the components in the cooking appliance 100. Furthermore, by arranging the oil fume purification device 10 in the assembly space 51 and between the outer shell 50 and the cooking body 30, the assembly space 51 of the outer shell 50 can be used to accommodate the oil fume purification device 10, avoiding exposure of the oil fume purification device 10, which is beneficial to better improve the overall aesthetics of the cooking utensil 100. At the same time, the oil fume purification device 10 can better seal and discharge the oil fume generated in the cooking body 30, reduce the leakage of high-temperature smoke into the assembly space 51, and ensure that the heat dissipation airflow in the assembly space 51 is stably discharged through the ventilation cavity 1111, thereby realizing a more reliable and compact layout of the various components of the cooking utensil 100, which is beneficial to better realize the miniaturization design of the cooking utensil 100 and further improve the practicality and reliability of the cooking utensil 100.

[0073] 1 and 5 , in one embodiment of the present application, the cooking body 30 includes a cooking container 31 and an upper cover 33 . The upper cover 33 covers the cooking container 31 and encloses a cooking space 35 . The upper cover 33 is provided with a smoke exhaust port 331 . The oil fume purification device 10 is provided between the upper cover 33 and the outer shell 50 and covers the smoke exhaust port 331 .

[0074] In this embodiment, the cooking body 30 can be used to load food into the cooking container 31, and then the upper cover 33 covers the cooking container 31 to form a sealed cooking space 35. This ensures that the fumes generated by the food heating and cooking in the sealed cooking space 35 can be stably discharged through the exhaust port 331, preventing the high-temperature fumes from leaking into the assembly space 51 and affecting the components within the assembly space 51. In a cooking appliance 100 such as an air fryer, the cooking container 31 and the upper cover 33 can be configured in a detachable structure, and the cooking container 31 can be detachably connected to the housing 50, allowing for easy loading and extraction of food by detaching the cooking container 31 during cooking. Therefore, the cooking utensil 100 can be provided with a smoke exhaust port 331 on the upper cover body 33, and the oil fume purification device 10 can be connected to the upper cover body 33, so that the oil fume purification device 10 can be stably installed in the cooking utensil 100, reducing the number of times the oil fume purification device 10 is disassembled and assembled, so that the cooking utensil 100 can more conveniently disassemble and assemble the cooking container 31 for loading and extracting ingredients, further improving the practicality and convenience of disassembly and assembly of the cooking utensil 100.

[0075] 1 and 5 , in one embodiment of the present application, a receiving groove 333 is formed in the upper cover 33, and the cooking body 30 is provided with a fan 37 and a heating component 39, the fan 37 and the heating component 39 are arranged in the receiving groove 333, the fan 37 is arranged between the heating component 39 and the bottom wall of the receiving groove 333, and the side wall of the receiving groove 333 is provided with a smoke exhaust port 331.

[0076] In this embodiment, the upper cover 33 can be configured as a concave bowl-shaped structure, so that a receiving groove 333 of a certain spatial depth is formed on the side of the upper cover 33 facing the cooking container 31. The heating component 39 and the fan 37 of the cooking body 30 can be installed in the receiving groove 333. This facilitates the horizontal movement of the cooking container 31 to be separated from or assembled with the upper cover 33, and reduces interference between the heating component 39 and the fan 37 and the cooking container 31 during movement. The heating component 39 can be a heating wire or a heating tube, etc. By arranging the fan 37 between the heating component 39 and the bottom wall of the receiving groove 333, the fan 37 can be used to blow the hot air heated by the heating component 39 into the cooking container 31 to heat the food, and the oil smoke generated by the heated food can be dispersed outward from the edges of the fan blades of the fan 37 due to the turbulent flow of the fan 37. At this time, by setting a smoke exhaust port 331 on the side wall of the upper cover body 33 and spacing the smoke exhaust port 331 from the fan 37 and the heating component 39, the oil smoke airflow disturbed by the fan 37 can be better flowed through the smoke exhaust port 331 for discharge, reducing the retention of smoke in the cooking space 35, and ensuring that the oil smoke generated by the cooking utensil 100 is quickly and reliably purified and discharged through the oil fume purification device 10, which is conducive to better improving the oil fume purification effect of the cooking utensil 100 and further improving the practicality and reliability of the cooking utensil 100.

[0077] 3 , in one embodiment of the present application, the cooking body 30 is defined as having a height direction, the distance between the fan 37 and the bottom wall of the accommodating groove 333 along the height direction is defined as D1, and the distance between the heating component 39 and the bottom wall of the accommodating groove 333 along the height direction is defined as D2, and D1 and D2 satisfy the relationship: D1 / D2≤1.

[0078] In this embodiment, by ensuring that the height distance D1 between the fan 37 and the bottom wall of the accommodating groove 333 and the height distance D2 between the heating component 39 and the bottom wall of the accommodating groove 333 satisfy the relationship D1 / D2≤1, the fan 37 and the heating component 39 can be arranged close to each other within this distance relationship range, or the distance between the fan 37 and the heating component 39 can be not too large, so that the cooking body 30 can better utilize the fan 37 to blow the heat radiated by the heating component 39 toward the surface of the food for heating and cooking. At the same time, when the oil fume gas rises and swirls around the fan 37 due to the turbulence effect of the fan 37, the heating component 39 can be used to better radiate heat to the oil fume airflow, thereby achieving a better temperature of the oil fume airflow, thereby fully utilizing the heat generated by the heating component 39, so that the oil fume airflow can carry more heat to thermally catalytically react with the purification component 13 in the oil fume purification device 10, thereby achieving sufficient catalytic degradation of pollutants in the oil fume airflow, which is conducive to better improving the oil fume purification effect of the cooking appliance 100 and further improving the practicality and reliability of the cooking appliance 100. In one embodiment, the ratio of D1 to D2 can satisfy the condition of 0.1≤D1 / D2≤0.5, so that the fan 37 and the heating component 39 can be better coordinated within this ratio range, ensuring the stable cooking operation and catalytic purification of oil smoke in the cooking utensil 100, achieving a better oil fume purification effect of the cooking utensil 100, and further improving the practicality and reliability of the oil fume purification device 10.

[0079] Furthermore, the distance D1 between the fan 37 and the bottom wall of the accommodating tank 333 in the height direction can meet the condition of 0.2 cm ≤ D1 ≤ 2 cm. Within the range of D1 ≥ 0.2 cm, the fan 37 can have a certain distance from the bottom wall of the accommodating tank 333, so that the fan 37 can better disturb the airflow to circulate in the cooking space 35, ensuring that the oil smoke airflow can be better gathered around the fan 37 and disturbed by the fan 37 to flow into the oil smoke purification device 10 at the smoke outlet 331 on the side wall of the accommodating tank 333, thereby ensuring the rapid discharge and purification of the oil smoke generated in the cooking utensil 100; at the same time, by making D1 ≤ 2 cm, the distance between the fan 37 and the bottom wall of the accommodating tank 333 can be made smaller, avoiding the oil smoke airflow being stagnant in the space between the fan 37 and the bottom wall of the accommodating tank 333, thereby reducing the oil smoke purification effect of the cooking utensil 100, ensuring the sufficient purification effect of the oil smoke generated by the cooking utensil 100, and further improving the practicality and reliability of the cooking utensil 100. In one embodiment, D1 may be in the range of 0.3 cm to 1 cm, within which the disturbing emission effect of the fan 37 on the oil smoke may be better improved, thereby further improving the oil smoke purification effect and reliability of the cooking appliance 100.

[0080] Secondly, the distance D2 between the heating component 39 and the bottom wall of the receiving groove 333 in the height direction can meet the condition of 0.5cm≤D2≤5cm. Within the range of D2≥0.5cm, the heating component 39 can have a certain distance from the bottom wall of the receiving groove 333, so that the fan 37 can better blow the airflow heated by the heating component 39 between the heating component 39 and the receiving groove 333 to the surface of the food to heat and cook the food, thereby ensuring the stable cooking operation of the cooking appliance 100; at the same time, within the range of D2≤5cm, it can avoid that the distance between the heating component 39 and the bottom wall of the receiving groove 333 is too large, ensuring that the heating component 39 can better radiate heat to the oil fume airflow disturbed and collected by the fan 37, thereby ensuring that the oil fume airflow flowing into the oil fume purification device 10 can have a certain temperature, realizing the heat collection function of the cooking appliance 100, ensuring the stable operation of the oil fume purification device 10, and further improving the practicality and reliability of the cooking appliance 100. In one embodiment, D2 can be in the range of 1.5 cm to 3.5 cm. Within this range, the coordinated operation of the fan 37 and the heating component 39 can be better improved, and the heat energy of the heating component 39 can be more fully utilized to achieve the heating and cooking of ingredients in the cooking utensil 100 and the thermal catalytic degradation of oil smoke, thereby further improving the oil smoke purification effect and reliability of the cooking utensil 100.

[0081] 3 , in one embodiment of the present application, the distance between the smoke exhaust port 331 and the bottom wall of the accommodating groove 333 along the height direction is defined as D3 , and D3 and D2 satisfy the relationship: D3 / D2≤1.

[0082] In this embodiment, the distance D3 between the smoke exhaust port 331 and the bottom wall of the accommodating groove 333 along the height direction and the distance D2 between the heating component 39 and the bottom wall of the accommodating groove 333 along the height direction can satisfy the relationship D3 / D2≤1. Within this ratio range, the smoke exhaust port 331 can be better arranged close to the heating component 39, ensuring that the heat radiated by the heating component 39 can better act on the oil fume airflow, thereby ensuring that the oil fume airflow can carry enough heat to fully thermally catalytically react with the purification component 13 in the oil fume purification device 10, thereby further improving the purification effect of the oil fume purification device 10 on the oil fume airflow. In one embodiment, the ratio of D3 to D2 can satisfy the condition of 0.1≤D3 / D2≤0.5. Within this ratio range, the distance between the smoke exhaust port 331 and the heating component 39, that is, the distance between the oil fume purification device 10 and the heating component 39, can be better reduced, so that the heat released by the heating component 39 can better act on the oil fume airflow and the purification component 13, thereby ensuring a stable thermal catalytic reaction in the oil fume purification device 10 and further improving the oil fume purification effect and practicality of the cooking utensil 100.

[0083] Furthermore, the height distance D3 between the smoke outlet 331 and the bottom wall of the receiving tank 333 can satisfy the condition D3 ≤ 4 cm. Within this range, a certain distance can be maintained between the smoke outlet 331 and the bottom wall of the receiving tank 333, thereby enabling a more appropriate layout of the smoke outlet 331, the fan 37, and the heating element 39. This ensures that the oil fume airflow is better concentrated around the fan 37 and is heated by the heating element 39. This ensures that the oil fume airflow, carrying a certain amount of heat, can more stably flow horizontally, disturbed by the fan 37, into the oil fume purification device 10 for thermal catalytic degradation and purification, thereby ensuring stable operation of the cooking appliance 100. In one embodiment, D3 can be within the range of 0.5 cm to 2 cm. Within this range, a certain distance can be maintained between the smoke outlet 331 and the bottom wall of the receiving tank 333, ensuring that the fan 37 and the heating element 39 cooperate with the structural layout of the smoke outlet 331, further improving the oil fume purification effect and practicality of the cooking appliance 100.

[0084] 3 , in one embodiment of the present application, the distance between the smoke exhaust port 331 and the fan 37 along the height direction is defined as H, satisfying the relationship: H≤5 cm.

[0085] In this embodiment, by ensuring that the distance H between the smoke exhaust port 331 and the fan 37 in the height direction meets the condition of H≤5cm, the height distance between the fan 37 and the smoke exhaust port 331 can be effectively reduced, so that the fan 37 can be better arranged close to the smoke exhaust port 331, that is, close to the oil fume purification device 10, which is conducive to better making the oil fume airflow disturbed and gathered around the fan 37 flow directly into the oil fume purification device 10 in the horizontal direction, reducing the retention of the oil fume airflow in the cooking space 35, and ensuring that the oil fume airflow generated in the cooking utensil 100 can quickly flow into the oil fume purification device 10 for purification, degradation and discharge, further improving the oil fume purification effect and reliability of the cooking utensil 100. In one embodiment, the distance H between the smoke exhaust port 331 and the fan 37 in the height direction can meet the condition of H≤2.5 cm. Within this range, the smoke exhaust port 331 and the fan 37 can be located on the same horizontal plane as much as possible, so that the oil fume airflow can flow along the shortest flow path to the smoke exhaust port 331 and enter the oil fume purification device 10, thereby achieving faster oil fume purification and discharge of the cooking appliance 100, further improving the practicality and reliability of the cooking appliance 100.

[0086] 4 , in one embodiment of the present application, the cooking body 30 is defined as having a horizontal direction, the distance between the smoke exhaust port 331 and the edge of the fan blade of the fan 37 adjacent to the smoke exhaust port 331 along the horizontal direction is defined as L1, and the distance between the smoke exhaust port 331 and the edge of the heating component 39 adjacent to the smoke exhaust port 331 along the horizontal direction is defined as L2, and L1 and L2 satisfy the relationship: L1≥L2, and 1≤L1 / L2≤2.

[0087] In this embodiment, by making the horizontal distance L1 between the smoke exhaust port 331 and the blade edge of the fan 37 and the horizontal distance L2 between the smoke exhaust port 331 and the heating component 39 satisfy the conditions of L1≥L2 and 1≤L1 / L2≤2, the heating component 39 can be arranged closer to the oil fume purification device 10 in the horizontal direction than the fan 37 within this range, and the horizontal distance between the fan 37 and the smoke exhaust port 331 can be less than or equal to twice the horizontal distance between the heating component 39 and the smoke exhaust port 331, thereby ensuring that the oil fume airflow gathered around the fan 37 can fully receive the heat radiated by the heating component 39, and thus the heat of the heating component 39 can be better transferred to the oil fume purification device 10, and at the same time ensuring that the oil fume airflow can better carry heat into the oil fume purification device 10 for thermal catalytic degradation, thereby further improving the oil fume purification effect of the cooking appliance 100.

[0088] Furthermore, by making the horizontal distance L1 between the smoke exhaust port 331 and the edge of the fan blade of the fan 37 adjacent to the smoke exhaust port 331 meet the condition of 0.5cm≤L1≤10cm, a certain gap can be provided between the edge of the fan blade of the fan 37 and the oil fume purification device 10 within the range of L1≥0.5cm, ensuring that the oil fume can be affected by the turbulence of the fan 37 and swirl around the fan 37, and then enter the oil fume purification device 10 at a certain wind speed maintained by the turbulence of the fan 37, so that the oil fume airflow can have a certain flow rate to pass through the purification component 13 and interact with the purification component 13. The mutual collision and contact realizes stable thermal catalytic reaction degradation, which is conducive to better ensuring the purification effect of the oil fume purification device 10 on the oil fume airflow, and further improving the oil fume purification effect of the cooking appliance 100; and by making L1≤10cm, it can avoid that the distance between the fan 37 and the oil fume purification device 10 is too large, and it can avoid that part of the oil fume airflow cannot flow stably to the exhaust port 331 and accumulates and stays in the cooking space 35, so that the oil fume generated in the cooking space 35 can fully and stably flow into the oil fume purification device 10 under the turbulence effect of the fan 37, further improving the oil fume purification effect of the cooking appliance 100. In one embodiment, L1 can satisfy the condition of 1cm≤L1≤5cm. Within this range, the horizontal spacing between the fan 37 and the oil fume purification device 10 can better ensure the turbulent effect of the fan 37 on the oil fume airflow, and ensure the flow rate of the oil fume airflow when it enters the oil fume purification device 10. At the same time, more oil fume airflow can be allowed to flow stably into the oil fume purification device 10 at a certain flow rate within a shorter path range for purification and degradation, thereby ensuring the sufficient purification of the oil fume airflow generated in the cooking utensil 100, and further improving the practicality and reliability of the cooking utensil 100.

[0089] In addition, by ensuring that the horizontal distance L2 between the smoke exhaust port 331 and the edge of the heating component 39 adjacent to the smoke exhaust port 331 satisfies the condition of L2≤10cm, the horizontal distance between the smoke exhaust port 331 and the heating component 39 can be better reduced within this range, ensuring that the heat radiated by the heating component 39 can better act on the oil fume purification device 10, ensuring the stable thermal catalytic degradation of the oil fume airflow and the purification component 13, which is beneficial to the stable and reliable purification of the oil fume airflow by the cooking utensil 100, and further improving the practicality and reliability of the cooking utensil 100. In one embodiment, L2 can satisfy the condition of 0.1cm≤L2≤3cm. Within this range, the heating component 39 can be brought closer to the oil fume purification device 10 to ensure the full application of the heat radiated by the heating component 39, reduce the loss of heat transferred from the heating component 39 to the oil fume purification device 10, and at the same time, there is no need to add an additional heating module to act on the oil fume purification device 10 for thermal catalytic degradation reaction, thereby improving the heat transfer efficiency and thermal energy utilization rate of the heating component 39, which is beneficial for the oil fume purification device 10 to receive more heat and perform thermal catalytic degradation with the oil fume airflow, further improving the oil fume purification effect of the cooking appliance 100.

[0090] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A fume purification device, wherein: The oil fume purification device comprises: a mounting housing, the mounting housing being configured to be mounted in a cooking appliance, the mounting housing being provided with a ventilation cavity and a purification cavity, the ventilation cavity being configured to communicate with an assembly space in the cooking appliance, and the purification cavity being configured to communicate with a cooking space in the cooking appliance; A purification component is arranged in the purification cavity and is used for catalytically degrading the oil smoke generated by the cooking utensil.

2. The oil fume purification device according to claim 1, wherein: A heat dissipation air duct is formed in the ventilation cavity, and a purification air duct is formed in the purification cavity. The cross-sectional area of the heat dissipation air duct is defined as S1, and the cross-sectional area of the purification air duct is defined as S2, and 0.2≤S1 / S2≤5.

3. The oil fume purification device according to claim 1, wherein: The mounting housing comprises an upper housing and a lower housing, the upper housing is provided with the ventilation cavity, the lower housing is provided with the purification cavity, and the upper housing is detachably connected to the lower housing; Alternatively, the mounting housing is an integrally formed structure.

4. The oil fume purification device according to any one of claims 1 to 3, wherein: The operating temperature of the purification component is defined as T, which satisfies the relationship: 80°C ≤ T ≤ 400°C.

5. The oil fume purification device according to claim 4, wherein: The oil fume purification device is further provided with a heating mechanism, which is arranged in the purification chamber and is used to heat the purification component.

6. The oil fume purification device according to any one of claims 1 to 3, wherein: The oil fume purification device is further provided with an interception net, which is arranged at the inlet of the purification chamber and / or the outlet of the purification chamber.

7. The oil fume purification device according to claim 6, wherein: The mesh size of the intercepting net is defined as A, satisfying the relationship: 50≤A≤100; And / or, the thickness of the intercepting net is defined as W, satisfying the relationship: 0.2mm≤W≤2mm.

8. The oil fume purification device according to any one of claims 1 to 3, wherein: A support member is provided on the periphery of the purification component, and the support member is used to abut against the inner wall of the purification chamber to support and fix the purification component.

9. The oil fume purification device according to any one of claims 1 to 3, wherein: The purification component includes an air-permeable carrier and a catalyst. The catalyst is loaded on the air-permeable carrier and is used for catalytically degrading the oil smoke generated by the cooking utensil.

10. The oil fume purification device according to claim 9, wherein: The catalyst is formed by doping an alkali metal or a precious metal into manganese oxide, wherein the alkali metal is one or more of potassium, calcium, magnesium, aluminum, zinc, copper, iron, cerium, barium, cobalt, titanium, zirconium, nickel, vanadium, lanthanum, and tungsten, and the precious metal is one or more of gold, platinum, silver, palladium, rhodium, and ruthenium.

11. The oil fume purification device according to claim 9, wherein: The breathable carrier is provided with a plurality of through holes penetrating the breathable carrier. The volume of the breathable carrier is defined as V, the horizontal plane where the through holes of the breathable carrier are located is defined as the longitudinal section, the area of the longitudinal section is S, and V and S satisfy the relationship: 0.2cm≤V / S≤5cm.

12. A cooking appliance, wherein: The cooking utensil includes a cooking body and an oil fume purification device, wherein the oil fume purification device is the oil fume purification device according to any one of claims 1 to 8, and the oil fume purification device is connected to the cooking body and is used to purify the oil fume generated in the cooking body.

13. The cooking appliance according to claim 12, wherein The cooking appliance further comprises a housing, an assembly space is provided in the housing, the cooking body is provided in the assembly space, a cooking space is provided in the cooking body, and the cooking body is provided with a smoke exhaust port communicating with the cooking space; The oil fume purification device is arranged between the shell and the cooking body, and is respectively connected to the assembly space and the smoke exhaust port.

14. The cooking appliance according to claim 13, wherein The cooking body comprises: Cooking containers; The upper cover body is arranged to cover the cooking container and enclose the cooking space. The upper cover body is provided with the smoke exhaust port. The oil fume purification device is arranged between the upper cover body and the outer shell and covers the smoke exhaust port.

15. The cooking appliance according to claim 14, wherein A receiving groove is formed in the upper cover body, and the cooking body is provided with a fan and a heating component. The fan and the heating component are arranged in the receiving groove, and the fan is arranged between the heating component and the bottom wall of the receiving groove. The side wall of the receiving groove is provided with the smoke exhaust port.

16. The cooking appliance according to claim 15, wherein The cooking body is defined as having a height direction, the distance between the fan and the bottom wall of the accommodating tank along the height direction is defined as D1, and the distance between the heating component and the bottom wall of the accommodating tank along the height direction is defined as D2, and D1 and D2 satisfy the relationship: D1 / D2≤1.

17. The cooking appliance according to claim 16, wherein The following relationships are satisfied: 0.2cm≤D1≤2cm; and / or, 0.5cm≤D2≤5cm; and / or, 0.1≤D1 / D2≤0.

5.

18. The cooking appliance according to claim 16, wherein The distance between the smoke exhaust port and the bottom wall of the accommodating groove along the height direction is defined as D3, and D3 and D2 satisfy the relationship: D3 / D2≤1.

19. The cooking appliance according to claim 18, wherein Satisfying the relationship: D3≤4cm; and / or, 0.1≤D3 / D2≤0.

5.

20. The cooking appliance according to claim 15, wherein The distance between the smoke exhaust port and the fan in the height direction is defined as H, which satisfies the relationship: H≤5cm.

21. The cooking appliance according to claim 15, wherein The cooking body is defined as having a horizontal direction, the distance between the smoke exhaust port and the edge of the fan blade adjacent to the smoke exhaust port along the horizontal direction is defined as L1, and the distance between the smoke exhaust port and the edge of the heating component adjacent to the smoke exhaust port along the horizontal direction is defined as L2, and L1 and L2 satisfy the relationship: L1≥L2, and 1≤L1 / L2≤2.

22. The cooking appliance according to claim 21, wherein The following relationships are satisfied: 0.5cm≤L1≤10cm; and / or, L2≤10cm.

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