Integrated cooking range inner circulation filtering device

Abstract

The application discloses an integrated stove inner circulation filtering device. Oil fume discharged from the integrated stove enters a filtering box from an air inlet. First, the oil fume flows through filter screen structure in the integrated filter. Through the synergistic effect of filter screens with different functions, large-particle oil dirt is intercepted, and oil fume is separated. The separated liquid oil dirt directly drops downward and is temporarily stored in an oil collection tray integrated at the bottom of the filter screen installation box. The airflow after primary filtration continues to circulate in the filtering box, and finally, the last-stage deep purification is completed through an air outlet filtering assembly at the air outlet, so that residual fine particles and peculiar smell molecules are completely intercepted, and standard clean airflow is discharged from the air outlet. The oil fume inner circulation treatment can be realized without external public flue. Meanwhile, during daily maintenance, only a detachable sealing cover plate at the top of the box is opened, and the whole integrated filtering assembly can be directly taken out from the box, so that filter screen cleaning and replacement and oil dumping and cleaning are simultaneously completed. The filter screen structure can be arbitrarily combined according to the smoke filtering environment.

Description

Technical Field

[0001] This invention relates to the field of integrated stove technology, and in particular to an integrated stove internal circulation filtration device. Background Technology

[0002] The current mainstream external exhaust integrated stoves rely heavily on external exhaust pipes and building communal flues for operation, making them completely unusable in many special scenarios: some high-rise residential buildings have congested communal flues, and the exhaust resistance far exceeds the rated wind pressure limit of the equipment's fan, resulting in backflow of fumes and poor exhaust; many open kitchens, small apartments, and old buildings do not have the conditions for opening holes in the exterior walls, making it impossible to lay external exhaust pipes; in some overseas city core areas and historical building protection areas, local regulations strictly restrict the opening of exterior walls and the external exhaust of fumes, making traditional external exhaust kitchen appliances completely unable to pass compliance inspections.

[0003] For example, Chinese patent CN222012034U, with an authorization announcement date of November 15, 2024, discloses an environmentally friendly internal circulation integrated stove. The air outlet of the volute is connected to a filter channel, which contains a pre-filter, a PM2.5 filter, and an activated carbon adsorption screen, forming a multi-layered oil fume separation effect to achieve oil fume purification. This solves the problem of oil fume purification in household integrated stoves, prevents oil fume from being discharged externally, and facilitates the installation of the integrated stove. However, in the aforementioned comparative patents, there are still significant shortcomings in the daily maintenance of the filters: the pre-filter, PM2.5 filter, and activated carbon adsorption mesh are all concentrated inside the filtration channel without a quick-release positioning and unlocking structure. When users need to replace or clean the filters, they must use tools to disassemble the outer shell of the channel to access the filters. The operation process is cumbersome and time-consuming, which not only increases the maintenance threshold for ordinary household users, but also easily leads to problems such as filter displacement and poor sealing due to improper disassembly and assembly. After long-term use, filter blockage and reduced purification efficiency can easily occur due to untimely cleaning and replacement, and may even affect the overall internal circulation exhaust effect of the integrated stove, greatly reducing the convenience of subsequent maintenance and long-term user experience of the product. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated stove internal circulation filter device that is easy to disassemble and clean.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an integrated stove internal circulation filtration device, comprising a filter box, an integrated filter assembly, a sealing cover, and an air outlet filter assembly; the filter box is provided with an air inlet directly or indirectly connected to the exhaust end of the integrated stove, and the filter box is provided with an air outlet for discharging purified airflow; the integrated filter assembly is detachably installed in the filter box, and the integrated filter assembly includes a filter screen mounting box, a lifting bracket installed on the filter screen mounting box, an oil collection tray installed at the bottom of the filter screen mounting box, and a filter screen structure detachably installed in the filter screen mounting box; the sealing cover is detachably installed on the top of the filter box, and the integrated filter assembly can be removed after the sealing cover is opened; the air outlet filter assembly is detachably installed at the air outlet.

[0006] By adopting the above technical solution, the fumes emitted by the integrated stove enter the filter box through the air inlet. They first flow through the filter structure inside the integrated filter, where large particles of oil are intercepted and oil fumes are separated through the synergistic action of different functional filters. The separated liquid oil drips directly downwards and collects in the oil collection tray integrated at the bottom of the filter installation box for temporary storage. The airflow that has passed the initial filtration continues to circulate in the filter box, and finally completes the final deep purification through the air outlet filter component at the air outlet, thoroughly intercepting residual fine particles and odor molecules. The clean airflow that meets the standards is discharged outwards from the air outlet. The entire process can achieve internal circulation of fumes without the need for an external public flue. At the same time, in daily maintenance, only the removable sealing cover on the top of the box needs to be opened to directly remove the entire integrated filter component from the box, and the filter can be cleaned and replaced, the oil can be emptied, and the internal cavity of the box can be cleaned without dead corners. The air outlet filter component can also be disassembled and maintained directly from the air outlet. The filter structure can be arbitrarily combined according to the smoke filtration environment.

[0007] A further feature of the present invention is that the filter structure is divided into a pre-filter group and a post-deep filter group along the flow direction of the oil fume airflow; the pre-filter group is a stainless steel wire mesh that can be directly washed and reused, used to preferentially intercept large oil droplets and food residues in the oil fume; the post-deep filter group includes at least one aluminum alloy frame activated carbon filter, used to adsorb residual fine oil fume particles and odor molecules that have passed through the filter.

[0008] By adopting the above technical solution, when the fumes first enter the filter box, they come into contact with the stainless steel wire mesh. The physical pores directly intercept large oil droplets and food residues carried in the fumes. The weight difference between oil and gas is used to achieve initial oil-fume separation. Most of the heavy grease is directly blocked on the surface of the primary filter layer and quickly flows into the oil collection tray below. The remaining fine oil fumes and odor molecules after primary filtration enter the aluminum alloy frame activated carbon filter. On the one hand, the porous adsorption structure of activated carbon captures micron-sized residual oil mist particles. On the other hand, the physical adsorption of activated carbon pores decomposes and adsorbs the odors produced by cooking, completing the deep purification of fumes. At the same time, the stainless steel wire mesh is corrosion-resistant and wear-resistant, and can be directly washed and reused, eliminating the need for frequent replacement of consumables and avoiding the subsequent replacement costs of disposable primary filter materials.

[0009] A further feature of the present invention is that: multiple insertion slots extending vertically are symmetrically arranged on both sides of the filter installation box, and the stainless steel wire mesh and the aluminum alloy frame activated carbon filter mesh are respectively inserted into two symmetrical insertion slots in a vertically downward direction.

[0010] By adopting the above technical solution, during installation, simply align the stainless steel wire mesh or aluminum alloy frame activated carbon filter with the corresponding insertion slot and insert it from top to bottom to complete the installation; during disassembly, simply lift the filter upwards to remove it, without the need for tools, which facilitates easy disassembly and replacement.

[0011] A further embodiment of the present invention is that the air outlet filter assembly includes a grille cover plate detachably disposed at the air outlet and an aluminum alloy frame activated carbon cotton mesh detachably disposed within the grille cover plate, wherein the grille holes of the aluminum alloy frame activated carbon cotton mesh and the grille cover plate are spaced apart.

[0012] By adopting the above technical solution, the airflow is further filtered by the aluminum alloy frame activated carbon cotton mesh when it is discharged. The cotton fiber layer completes the physical interception of large particles of dust, and then through the nano-scale micropores inside the activated carbon, it fully adsorbs odor molecules, formaldehyde, TVOC and other harmful gases, thus completing dual purification. At the same time, the spacing of the grid holes of the aluminum alloy frame activated carbon cotton mesh and the grid cover plate makes the airflow resistance lower and the airflow smoother during the discharge process.

[0013] A further feature of the present invention is that: the grid cover plate is provided with waist-shaped holes on both sides, and rubber rings for easy gripping are provided at the waist-shaped holes.

[0014] By adopting the above technical solution, the rubber ring is set behind the waist-shaped hole to form a soft grip that fits the palm. When lifting the grating cover, it will not hurt your hand or slip. Even if your hands are stained with oil or sewage, you can still grip it stably. It meets the needs of frequent disassembly and assembly of grating covers during routine equipment maintenance.

[0015] A further configuration of the present invention is as follows: the filter housing includes an upper housing and a lower housing communicating with the bottom of the upper housing; the air inlet is disposed on the side of the upper housing; the integrated filter assembly is disposed inside the upper housing; the sealing cover is disposed on the top of the upper housing; and the air outlet is disposed on the front side of the lower housing; the bottom of the upper housing passes through the bottom of the cabinet and connects to the lower housing; the lower housing is installed in the cavity between the bottom of the cabinet and the ground; and the air outlet filter assembly is flush with the baseboard at the bottom of the cabinet.

[0016] By adopting the above technical solution, the entire equipment is completely concealed within the upper and lower cavities of the cabinet. The upper housing is embedded in the bottom of the cabinet, and the lower housing is tucked into the area where the cabinet meets the baseboard. There are no protruding structures, so it does not occupy any core kitchen space such as the countertop work area or the cabinet storage area. The air outlet filter component is flush with the cabinet baseboard, visually integrating seamlessly with the custom cabinetry and maintaining the overall harmony of the kitchen's design. Furthermore, the core integrated filter component is concentrated inside the upper housing, and with the top sealing cover, routine filter replacement and internal component cleaning only require opening the cabinet. With the sealed cover, components can be removed directly from the top for operation without moving the lower cabinet or disassembling the cabinet baseboard. Maintenance can be completed by one person by hand without additional tools. At the same time, the air outlet layout close to the ground allows the purified and gentle airflow to spread evenly along the baseboard, continuously blowing on the corners and crevices of the kitchen floor. This can quickly evaporate residual water stains on the floor, preventing the floor from being damp and moldy for a long time after washing vegetables or mopping, and making it slippery. It is especially suitable for areas around the kitchen sink and corners that are prone to water accumulation and mold. Long-term use can reduce the problems of blackening of the floor and mold growth in tile grout, keeping the floor dry and clean.

[0017] A further feature of the present invention is that: a first connection port is provided at the bottom of the upper housing on the side away from the air inlet, and two second connection ports are provided at the bottom of the lower housing; the upper housing is installed on the left or right side of the integrated stove according to the direction of the exhaust end of the integrated stove; and during the connection between the upper housing and the lower housing, the first connection port communicates with one of the second connection ports, and the bottom of the upper housing covers the other second connection port.

[0018] By adopting the above technical solution, the upper housing can be installed on the left or right side of the device according to the direction of the smoke exhaust end of the integrated stove: during installation, the first connection port is always aligned with one of the second connection ports on the corresponding side to complete the connection and docking. The solid surface of the bottom of the upper housing directly covers the other unused second connection port. No additional sealing parts are required, which can realize bidirectional installation, reduce mold development costs, and improve the reuse rate of parts.

[0019] A further arrangement of the present invention is as follows: a plurality of first connection holes for connecting to the lower box body are provided on the front and rear sides of the upper box body; a U-shaped installation groove is provided on the upper surface of the lower box body, and a plurality of second connection holes for connecting with the bottom of the cabinet are provided in the installation groove.

[0020] By adopting the above technical solution, the detachable connection between the upper box body and the lower box body can be realized through the cooperation of the plurality of first connection holes of the upper box body and screws; the plurality of second connection holes of the lower box body cooperate with screws to be directly locked under the bottom plate of the cabinet, which provides a rigid supporting foundation for the upper box body and the internal filter assembly, and the problems of shaking and displacement will not occur during full-load operation.

[0021] A further arrangement of the present invention is as follows: two fixing buckles are provided on the upper surface of the lower box body, a clamping groove is provided on the rear side of the upper box body, and the fixing buckles are laterally inserted into the clamping groove.

[0022] By adopting the above technical solution, the buckle laterally inserted into the clamping groove relies on the rigid fitting between the buckle body and the upper and lower inner walls of the clamping groove to form a rigid limit in the vertical direction, which is equivalent to arranging a clamping position that cannot move vertically up and down between the upper and lower box bodies. Even if subjected to an upward lifting force or a downward falling force, the upper and lower contact surfaces of the buckle will directly form a stop, eliminating vertical looseness in terms of mechanical structure.

[0023] A further arrangement of the present invention is as follows: a limiting stop bar is provided at the bottom of the upper box body, which limits the movement of the integrated filter assembly toward the direction close to the first connection holes to prevent the first connection holes from being covered.

[0024] By adopting the above technical solution, the limiting stop bar directly limits the movement range of the integrated filter assembly, completely eliminating the problem that the integrated filter assembly shifts and covers the first connection holes. The integrated filter assembly can be directly disassembled and assembled subsequently, which greatly improves maintenance efficiency. Description of Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative effort.

[0026] Figure 1 is a structural schematic diagram of embodiment 1; Figure 2 is an exploded structural view of embodiment 1; Figure 3 is a sectional structural view of embodiment 1; Figure 4 is a structural schematic diagram of the integrated filter assembly in embodiment 1; Figure 5 This is a structural schematic diagram of Example 2. Figure 1 ; Figure 6 This is a structural schematic diagram of Example 2. Figure 2 ; Figure 7 This is the structural explosion of Example 2. Figure 1 ; Figure 8 This is the structural explosion of Example 2. Figure 2 ; Figure 9 This is an installation diagram of Example 2.

[0027] In the diagram: 1. Filter housing; 11. Upper housing; 111. Air inlet; 112. First connection port; 113. First connection hole; 114. Slot; 115. Limiting strip; 12. Lower housing; 121. Air outlet; 122. Second connection port; 123. Mounting slot; 124. Second connection hole; 125. Fixing buckle; 2. Integrated filter assembly; 21. Filter screen mounting box; 211. Insertion slot; 22. Lifting bracket; 23. Oil collection tray; 24. Filter screen structure; 241. Pre-filter assembly; 242. Post-filter depth assembly; 3. Sealing cover; 4. Air outlet filter assembly; 41. Grille cover; 411. Waist-shaped hole; 412. Rubber ring; 42. Aluminum alloy frame activated carbon cotton mesh. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] Example 1: An integrated stove internal circulation filtration device, such as Figure 1 and Figure 2 As shown, it includes a filter housing 1, an integrated filter assembly 2, a sealing cover 3, and an air outlet filter assembly 4.

[0030] like Figure 1 and Figure 2 As shown, the filter box 1 is provided with an air inlet 111 that is directly or indirectly connected to the exhaust end of the integrated stove, and the filter box 1 is provided with an air outlet 121 for discharging the purified airflow; the air inlet 111 and the air outlet 121 are located at the two ends of the filter box 1 respectively.

[0031] like Figures 2 to 3As shown, the integrated filter assembly 2 is detachably installed inside the filter housing 1. The integrated filter assembly 2 includes a filter screen mounting box 21, a lifting bracket 22 installed on the filter screen mounting box 21, an oil collection tray 23 installed at the bottom of the filter screen mounting box 21, and a filter screen structure 24 detachably installed inside the filter screen mounting box 21.

[0032] like Figure 2 and Figure 3 As shown, the filter structure 24 is divided into a pre-filter group 241 and a post-deep filter group 242 along the flow direction of the oil fume airflow. The pre-filter group 241 is a stainless steel wire mesh that can be directly washed and reused, used to preferentially intercept large oil droplets and food residues in the oil fumes. The post-deep filter group 242 includes at least one aluminum alloy frame activated carbon filter, used to adsorb residual fine oil fume particles and odor molecules that have passed through the filter. The filter installation box 21 has multiple vertically extending insertion slots 211 symmetrically arranged on both sides. The stainless steel wire mesh and the aluminum alloy frame activated carbon filter are inserted into two symmetrical insertion slots 211 on both sides in a vertically downward direction.

[0033] like Figure 1 and Figure 2 As shown, the sealing cover 3 is detachably installed on the top of the filter box 1. The sealing cover 3 and the filter box 1 are detachably connected by a snap-fit ​​installation. The integrated filter assembly 2 can be taken out after the sealing cover 3 is opened. like Figure 1 and Figure 2 As shown, the air outlet filter assembly 4 is detachably mounted at the air outlet 121. The air outlet filter assembly 4 includes a grille cover 41 detachably mounted at the air outlet 121 and an aluminum alloy frame activated carbon mesh 42 detachably mounted within the grille cover 41 by bolts. The grille holes of the aluminum alloy frame activated carbon mesh 42 and the grille cover 41 are spaced apart; simultaneously, symmetrical waist-shaped holes 411 are provided on both sides of the grille cover 41, and rubber rings 412 for easy gripping are provided at the waist-shaped holes 411. The grille cover 41 and the filter housing 1 are detachably connected by a snap-fit ​​installation.

[0034] Implementation Results: The fumes emitted by the integrated stove enter the filter housing 1 through the air inlet 111. They first flow through the filter structure 24 inside the integrated filter, where large particles of oil are intercepted and oil fumes are separated through the synergistic action of different functional filters. The separated liquid oil drips directly downwards and collects in the oil collection tray 23 integrated at the bottom of the filter installation box 21 for temporary storage. The airflow that has passed the initial filtration continues to circulate in the filter housing 1 and finally passes through the exhaust filter assembly 4 at the air outlet 121 to complete the final deep purification, thoroughly intercepting residual fine particles and odor molecules. The clean airflow that meets the standards is discharged outwards from the air outlet 121. The entire process can achieve internal circulation of fumes without the need for an external public flue. At the same time, in daily maintenance, only the removable sealing cover 3 on the top of the housing needs to be opened to directly remove the entire integrated filter assembly 2 from the housing. The filter can be cleaned and replaced, the oil can be emptied, and the inner cavity of the housing can be cleaned without dead corners. The exhaust filter assembly 4 can also be removed and maintained directly from the air outlet 121.

[0035] When the cooking fumes first enter the filter chamber 1, they come into contact with the stainless steel wire mesh. The physical pores directly intercept large oil droplets and food residues carried in the fumes. The weight difference between oil and gas is used to achieve initial oil-fume separation. Most of the heavy grease is directly blocked on the surface of the primary filter layer and quickly flows into the oil collection tray 23 below. The remaining fine oil fumes and odor molecules after primary filtration enter the aluminum alloy frame activated carbon filter. On the one hand, the porous adsorption structure of activated carbon captures micron-sized residual oil mist particles. On the other hand, the physical adsorption of activated carbon pores decomposes and adsorbs the odors produced during cooking, completing the deep purification of the fumes. At the same time, the stainless steel wire mesh is corrosion-resistant and wear-resistant, and can be directly washed and reused without frequent replacement of consumables, avoiding the subsequent replacement expenses of disposable primary filter materials.

[0036] As the airflow exits, it undergoes further filtration through the aluminum alloy frame activated carbon cotton mesh 42. The cotton fiber layer physically intercepts large particles of dust, and the activated carbon then fully adsorbs odor molecules, formaldehyde, TVOCs, and other harmful gases through its nano-scale micropores, achieving dual purification. Simultaneously, the spaced spacing between the aluminum alloy frame activated carbon cotton mesh 42 and the grille cover 41 reduces airflow resistance and ensures smoother airflow during exit. A rubber ring 412, positioned behind the waist-shaped hole 411, forms a soft grip that conforms to the palm of the hand, preventing discomfort and slippage when lifting the grille cover 41. Even with oily or dirty hands, it provides a stable grip, meeting the needs of frequent disassembly and reassembly of the grille cover 41 during routine equipment maintenance.

[0037] Example 2: An integrated stove internal circulation filtration device, such as Figures 5 to 9As shown, the difference from Embodiment 1 is that: the filter housing 1 includes an upper housing 11 and a lower housing 12 communicating with the bottom of the upper housing 11. The air inlet 111 is located on the side of the upper housing 11, the integrated filter assembly 2 is located inside the upper housing 11, the sealing cover 3 is located on the top of the upper housing 11, and the air outlet 121 is located on the front side of the lower housing 12. The bottom of the upper housing 11 passes through the bottom of the cabinet and connects to the lower housing 12; the lower housing 12 is installed in the cavity between the bottom of the cabinet and the ground, and the air outlet filter assembly 4 is flush with the baseboard of the bottom of the cabinet.

[0038] like Figures 5 to 9 As shown, the bottom of the upper housing 11 away from the air inlet 111 is provided with a first connection port 112, and the bottom of the lower housing 12 is provided with two second connection ports 122. The upper housing 11 is installed on the left or right side of the integrated stove according to the direction of the exhaust end of the integrated stove. During the connection between the upper housing 11 and the lower housing 12, the first connection port 112 communicates with one of the second connection ports 122, and the bottom of the upper housing 11 covers the other second connection port 122.

[0039] like Figures 5 to 9 As shown, the bottom of the upper housing 11 is provided with a limiting strip 115 to restrict the movement of the integrated filter assembly 2 towards the first connection hole 113 to prevent it from covering the first connection hole 113. The upper housing 11 has multiple first connection holes 113 on its front and rear sides for connecting to the lower housing 12; the upper surface of the lower housing 12 has a U-shaped mounting groove 123, within which multiple second connection holes 124 are provided for connecting to the bottom of the cabinet. The upper surface of the lower housing 12 has two fixing buckles 125, and the rear side of the upper housing 11 has a slot 114 into which the fixing buckles 125 are horizontally inserted.

[0040] Implementation Results: The entire system is completely concealed within the upper and lower cavities of the cabinet. The upper housing 11 is embedded in the bottom of the cabinet, and the lower housing 12 is tucked into the area where the cabinet meets the baseboard. There are no protruding structures, and it does not occupy any core kitchen space such as the countertop or internal storage area. The air outlet filter component 4 is flush with the baseboard, seamlessly integrating with the custom cabinetry and maintaining the overall harmony of the kitchen design. Furthermore, the core integrated filter component 2 is entirely concentrated inside the upper housing 11, along with the top sealing cover 3. For routine filter replacement and internal component cleaning, simply open the cabinet. With the sealing cover 3, components can be removed directly from the top for operation without moving the lower cabinet 12 or disassembling the cabinet baseboard. Maintenance can be completed by one person by hand without additional tools. At the same time, the air outlet layout close to the ground allows the purified and gentle airflow to spread evenly along the baseboard, continuously blowing on the corners and crevices of the kitchen floor. This can quickly evaporate residual water stains on the floor, preventing the floor from being damp and moldy for a long time after washing vegetables or mopping, and making it slippery. It is especially suitable for areas around the kitchen sink, corners, and other areas prone to water accumulation and mold. Long-term use can reduce the problems of blackening of the floor and mold growth in tile grout, keeping the floor dry and clean.

[0041] The upper housing 11 can be installed on the left or right side of the device depending on the direction of the exhaust end of the integrated stove. During installation, the first connection port 112 is always aligned with one of the second connection ports 122 on the corresponding side to complete the connection. The solid surface of the bottom of the upper housing 11 directly covers the other unused second connection port 122. No additional sealing parts are required, which can achieve bidirectional installation, reduce mold development costs, and improve the reuse rate of parts.

Claims

1. An integrated stove internal circulation filtration device, characterized in that: Includes filter housing (1), integrated filter assembly (2), sealing cover (3), and air outlet filter assembly (4); The filter box (1) is provided with an air inlet (111) that is directly or indirectly connected to the exhaust end of the integrated stove, and the filter box (1) is provided with an air outlet (121) for discharging the purified airflow. The integrated filter assembly (2) is detachably installed inside the filter box (1). The integrated filter assembly (2) includes a filter screen mounting box (21), a lifting bracket (22) installed on the filter screen mounting box (21), an oil collection tray (23) installed at the bottom of the filter screen mounting box (21), and a filter screen structure (24) detachably installed inside the filter screen mounting box (21). The sealing cover (3) is detachably installed on the top of the filter box (1). After the sealing cover (3) is opened, the integrated filter assembly (2) can be taken out. The air outlet filter assembly (4) is detachably installed at the air outlet (121).

2. The integrated stove internal circulation filtration device according to claim 1, characterized in that: The filter structure (24) is divided into a pre-filter group (241) and a post-deep filter group (242) along the flow direction of the oil fume airflow. The pre-filter assembly (241) is a stainless steel wire mesh that can be directly washed and reused, used to preferentially intercept large oil droplets and food residues in the fumes. The post-deep filter assembly (242) includes at least one aluminum alloy frame activated carbon filter for adsorbing residual fine oil fume particles and odor molecules that have penetrated the filter.

3. The integrated stove internal circulation filtration device according to claim 2, characterized in that: The filter installation box (21) has multiple insertion slots (211) extending vertically on both sides. The stainless steel wire mesh and the aluminum alloy frame activated carbon filter are inserted into the two symmetrical insertion slots (211) on both sides in a vertically downward direction.

4. The integrated stove internal circulation filter device according to claim 1, characterized in that: The air outlet filter assembly (4) includes a grille cover plate (41) detachably disposed at the air outlet (121) and an aluminum alloy frame activated carbon cotton mesh (42) detachably disposed inside the grille cover plate (41), wherein the grille holes of the aluminum alloy frame activated carbon cotton mesh (42) and the grille cover plate (41) are spaced apart.

5. The integrated stove internal circulation filter device according to claim 4, characterized in that: The grid cover (41) is provided with waist-shaped holes (411) on both sides, and rubber rings (412) for easy gripping are provided at the waist-shaped holes (411).

6. The integrated stove internal circulation filter device according to claim 1, characterized in that: The filter housing (1) includes an upper housing (11) and a lower housing (12) connected to the bottom of the upper housing (11). The air inlet (111) is located on the side of the upper housing (11). The integrated filter assembly (2) is located inside the upper housing (11). The sealing cover (3) is located on the top of the upper housing (11). The air outlet (121) is located on the front side of the lower housing (12). The bottom of the upper box (11) passes through the bottom of the cabinet and is connected to the lower box (12); The lower housing (12) is installed in the cavity between the bottom of the cabinet and the ground, and the air outlet filter assembly (4) is flush with the baseboard at the bottom of the cabinet.

7. The integrated stove internal circulation filtration device according to claim 6, characterized in that: A first connection port (112) is arranged at the bottom of the side of the upper box body (11) away from the air inlet (111), two second connection ports (122) are arranged at the bottom of the lower box body (12), the upper box body (11) can be installed on the left or right side of the integrated cooker according to the direction of the smoke exhaust end of the integrated cooker, and in the connection process of the upper box body (11) and the lower box body (12), the first connection port (112) is communicated with one of the second connection ports (122), and the bottom of the upper box body (11) covers the other second connection port (122).

8. The integrated stove internal circulation filter device according to claim 6, characterized in that: A plurality of first connection holes (113) for connecting to the lower box body (12) are arranged on the front and rear sides of the upper box body (11); a "U"-shaped installation groove (123) is arranged on the upper surface of the lower box body (12), and a plurality of second connection holes (124) for connecting with the bottom of the cabinet are arranged in the installation groove (123).

9. The integrated stove internal circulation filter device according to claim 8, characterized in that: Two fixing buckles (125) are arranged on the upper surface of the lower box body (12), a clamping groove (114) is arranged at the rear side of the upper box body (11), and the fixing buckles (125) are transversely inserted into the clamping groove (114).

10. The integrated stove internal circulation filtration device according to claim 6, characterized in that: A limiting stop bar (115) is arranged at the bottom of the upper box body (11), which limits the movement of the integrated filter assembly (2) towards the direction close to the first connection hole (113) to prevent the integrated filter assembly (2) from covering the first connection hole (113).

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