A down-draft type smoke stove integrated machine

Abstract

The utility model discloses a kind of down-draught type smoke stove integrated machine, it is related to the field of range hood technology, it includes panel, bottom shell is installed in panel lower end portion, heating portion for being used to heat for stove is equipped between panel and bottom shell, bottom shell is equipped with filter portion between two heating portions, filter assembly includes air inlet grille, filter holder, grease filter, dust filter and square-round converter, filter portion is connected with oil guide structure, oil guide structure is communicated with oil storage portion, bottom shell lower end portion is equipped with exhaust component, exhaust component includes iron box, fan, exhaust pipe and oil storage box, iron box is installed in bottom shell lower end portion and is communicated with square-round converter, fan is installed in iron box, exhaust pipe is communicated with iron box side wall, oil storage portion is installed in iron box top corner place. The present application has the effect of improving the exhaust efficiency of device.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a downdraft integrated range hood and cooktop unit. Background Technology

[0002] Currently, range hoods and cooktops are the core equipment in the kitchen, widely used in homes, restaurants and other settings. They can heat food, extract and exhaust fumes, ensuring a fresh environment and cooking efficiency. Traditional range hoods and cooktops are usually designed as separate units.

[0003] Traditionally, range hoods and cooktops are two separate devices. The range hood is vertically suspended above the cooktop and needs to be installed on the wall, while the cooktop is embedded in the countertop, directly opposite the range hood. The range hood absorbs the cooking fumes produced during cooking, and these fumes are then exhausted through a ventilation duct that connects to the outside, minimizing the pollution of people and the kitchen environment caused by the fumes. The ventilation duct usually contains a fume filter to filter grease, reducing the accumulation of grease on the inner walls of the duct and improving exhaust efficiency.

[0004] Regarding the aforementioned technologies, the installation of range hoods occupies a large amount of space above the stove, affecting the overall visual appeal and hindering space utilization. During the exhaust process, the grease in the grease is intercepted on the filter screen as it passes through the mesh cover. Over time, this can clog the filter screen, and the high viscosity of the grease makes cleaning it difficult. Furthermore, the mesh cover is usually parallel to the cross-section of the ventilation duct, which affects the exhaust effect of the ventilation duct and hinders the improvement of its exhaust efficiency. Utility Model Content

[0005] In order to improve the exhaust efficiency and effect of the device, this application provides a downdraft range hood and cooktop integrated unit.

[0006] This application provides a downdraft integrated range hood and cooktop, employing the following technical solution: A downdraft range hood and cooktop combo includes a panel, a bottom shell at the lower end of the panel, a filter section for filtering oil fumes between the panel and the bottom shell, heating sections for heating the cooktop on both sides of the panel along its length, the filter section located between the two heating sections, an oil guiding structure connected to the lower end of the filter section, and an oil storage section connected to the oil guiding structure. The grease filtered by the filter section enters the oil storage section under gravity through the oil guiding structure, and an exhaust component at the lower end of the bottom shell for discharging the filtered oil fumes.

[0007] By adopting the above technical solution, the bottom shell supports the panel, the user heats the stove through the heating element, the panel supports the stove, the filter element filters the oil fumes generated during cooking, and the filtered grease enters the oil storage section under the guidance of the oil guiding structure. The oil storage section stores the grease, and the grease content of the filtered oil fumes is reduced. It is then discharged to the outside through the exhaust component, which helps to reduce the adsorption of grease by the mesh cover and improve the exhaust efficiency of the ventilation duct.

[0008] Optionally, the passage includes an air intake grille, a filter bracket, a grease filter, a dust filter, and a square-to-round converter. The air intake grille is detachably connected to the panel. The filter bracket is located at the upper end of the bottom shell. The dust filter and the grease filter are both located on the filter bracket and are placed at an angle along the surface of the filter bracket. The square-to-round converter is fixed at the lower end of the filter bracket, and its circular side is connected to the exhaust assembly. The fumes pass through the air intake grille, the grease filter, the dust filter, and the square-to-round converter in sequence, and are discharged through the exhaust assembly.

[0009] By adopting the above technical solution, cooking fumes are drawn into the filter bracket through the air intake grille by the exhaust component, and then pass through the grease filter and dust filter in sequence. The dust filter and grease filter filter the grease and impurities in the fumes, reducing the probability that grease and impurities will enter the exhaust component and accumulate, affecting exhaust efficiency. The grease filter is set at an angle so that after the grease comes into contact with the top of the grease filter, it flows along the inclined direction of the grease filter to both sides of the filter bracket along the width direction, reducing the probability that grease will concentrate in the middle part of the grease filter, thus affecting the efficiency of the fumes. The upper part of the square-round converter allows the airflow to pass through the dust filter and grease filter at high speed and evenly, while the lower part of the square-round converter buffers the airflow, reducing the probability that the airflow will hit the bottom shell and affect it, which is conducive to improving the exhaust efficiency and effect of the device.

[0010] Optionally, the air intake grille includes a frame and several filter plates, all of which are located within the frame and connected to the inner wall of the frame. The width of the filter plate located in the middle position is greater than the width of the filter plates on both sides.

[0011] By adopting the above technical solution, the frame fixes and supports the filter plate, the filter plate performs preliminary filtration of oil fumes, and the middle filter plate guides the airflow, so that the gas enters the filter support from both sides, allowing the oil fumes to fully contact the grease filter and the dust filter for filtration, which helps to improve the filtration efficiency of the oil fume filter and the dust filter.

[0012] Optionally, the filter plate at the middle position of the air intake grille has several grooves on both sides along the width direction.

[0013] By adopting the above technical solution, the groove provides a gripping part for the user, making it easy for the user to grab the filter plate and disassemble the air intake grille, which helps to improve the convenience of disassembling the air intake grille. Several grooves are provided on both sides along the width direction of the filter plate in the middle of the air intake grille.

[0014] Optionally, the filter bracket includes a housing, a straight plate, two reinforcing plates, and two baffles. The housing is fixed inside the bottom shell. The straight plate is located inside the housing and is arranged along the length of the housing. The two baffles are located on both sides of the straight plate along the length and are fixedly connected to the straight plate of the housing. The two reinforcing plates are fixed on both sides of the straight plate along the thickness direction. Both sides of the reinforcing plates along the length direction are in contact with the baffles. Several support plates are fixed between the reinforcing plates and the straight plate. Several crossbars are fixed between the reinforcing plates and the housing. The crossbars are inclined from the reinforcing plates to the housing. One end of the dust filter and the grease filter along the width direction is placed on the reinforcing plate, and the other end is in contact with the inner wall of the filter bracket.

[0015] By adopting the above technical solution, the bottom shell supports the straight plate through the outer shell, and the outer shell fixes the straight plate through the reinforcing plate and the baffle, thereby improving the working stability of the straight plate. The reinforcing plate further reinforces the straight plate through the support plate, and the crossbar supports the dust filter and the grease filter, thereby improving the support for the dust filter and the grease filter.

[0016] Optionally, the oil guiding structure includes an oil drain pipe and an oil drain trough. The oil drain trough is opened on the inner wall of the outer shell and arranged circumferentially along the outer shell. The oil drain pipe is connected to the oil drain trough, and the side of the oil drain pipe away from the oil drain trough is connected to the oil storage part.

[0017] By adopting the above technical solution, the grease stored in the grease filter flows along the inner wall of the outer shell to the oil drain trough, and then flows along the oil drain trough to the oil drain pipe. Both the oil drain trough and the oil drain pipe guide the grease, so that the grease flows into the oil storage section, where the oil storage section stores the grease. This allows the grease filter to continuously absorb and filter oil fumes, which helps to improve the working efficiency of the device.

[0018] Optionally, the exhaust assembly includes an iron box, a fan, and an exhaust pipe. The iron box is located at the lower end of the bottom shell, the fan is located inside the iron box and directly opposite the lower end of the square-round converter, and the exhaust pipe is connected to the iron box to exhaust oil fumes to the outside. The oil storage part is located at the top corner of the iron box.

[0019] By adopting the above technical solution, the bottom shell supports the exhaust pipe and oil collection box through the iron box. When the fan is working, the external oil fumes pass through the air intake grille, dust filter, grease filter, square-round converter in sequence and are finally discharged to the outside along the exhaust pipe. The exhaust pipe guides the oil fumes and reduces the probability of leakage during the oil fume discharge process.

[0020] Optionally, an installation groove is provided at the top corner of the iron box, the installation groove is recessed into the iron box, the oil storage part includes an installation box and an oil storage box, the oil storage box is located inside the installation box, the shape of the installation box is adapted to the installation groove, the installation box and the iron box are detachably connected, the iron box has a through hole for accommodating the oil storage box, and the side of the oil storage box passing through the through hole is connected to the oil drain pipe.

[0021] By adopting the above technical solution, the iron box supports the mounting box through the mounting groove, thereby supporting the oil storage box. Users can disassemble and clean the oil storage box by removing the mounting box. The oil storage box is connected to the oil drain pipe through the through hole, and the iron box further limits the oil storage box through the through hole, which helps to improve the disassembly convenience and installation stability of the oil storage box.

[0022] Optionally, the housing has a guide surface at one end along its length, the guide surface is inclined from one end of the filter bracket toward the middle, and the straight plate is inserted into the guide surface.

[0023] By adopting the above technical solution, the outer shell is further fixed to the straight plate through the guide surface, which improves the installation stability of the straight plate. The guide surface guides the liquefied grease on the surface, so that the grease flows along the guide surface into the oil drain groove, reducing the probability that the grease accumulation will affect the cleanliness of the guide surface. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a downdraft range hood and cooktop combo.

[0025] Figure 2 This is a schematic diagram designed to highlight the internal structure of the filter holder.

[0026] Figure 3 This is a schematic diagram of the internal structure of the bottom shell.

[0027] Figure 4 This is a schematic diagram designed to highlight the locations of the grease filter and the dust filter.

[0028] Figure 5 yes Figure 3 An enlarged schematic diagram of part A in the middle.

[0029] Figure 6 This is a schematic diagram designed to highlight the internal structure of the metal box.

[0030] Figure 7 This is a schematic diagram designed to highlight the structure of the mounting box.

[0031] Explanation of reference numerals in the attached drawings: 1. Front panel; 2. Bottom shell; 3. Heating unit; 31. Coil; 32. Aluminum plate; 33. Fan; 34. Main board; 35. Main control board bracket; 36. Keypad bracket; 4. Filter unit; 41. Air intake grille; 411. Frame; 412. Filter plate; 413. Groove; 42. Filter bracket; 421. Outer shell; 422. Straight plate; 423. Baffle; 424. Reinforcing plate; 425. Support plate; 426. Crossbar; 427. Guide. Surface; 43. Grease filter; 44. Dust filter; 45. Square-to-round converter; 5. Exhaust assembly; 51. Iron box; 511. Through hole; 512. Mounting slot; 513. Rectangular hole; 52. Fan; 53. Exhaust duct; 531. Right angle adapter; 532. Ventilation duct; 533. Carbon filter; 6. Oil guiding structure; 61. Oil drain groove; 62. Oil drain pipe; 7. Oil storage section; 71. Mounting box; 711. Rectangular plate; 712. Connecting plate; 72. Oil storage box. Detailed Implementation

[0032] The present application will be further described in detail below with reference to all the accompanying drawings.

[0033] This application discloses a downdraft range hood and cooktop combo. Example

[0034] Reference Figure 1 and Figure 2 A downdraft range hood and cooktop combo includes a panel 1, a bottom shell 2 installed at the lower end of the panel 1, heating elements 3 installed on both sides along the length of the bottom shell 2 and the panel 1, and a filter element 4 installed between the two heating elements 3. An oil guiding structure 6 is installed at the lower end of the filter element 4, and the oil guiding structure 6 is connected to an oil storage part 7. An exhaust assembly 5 is installed at the lower end of the bottom shell 2. After the user places the cooktop on the panel 1, the cooktop is heated and cooked by the heating elements 3. The oil fumes generated during cooking enter the exhaust assembly 5 through the filter element 4 and are discharged to the outside. The oil filtered by the filter element 4 enters the oil storage part 7 through the oil guiding structure 6 for temporary storage. The bottom shell 2 supports and fixes the panel 1, the filter element 4 and the exhaust assembly 5.

[0035] Reference Figure 1 and Figure 3The heating unit 3 includes a coil 31, an aluminum plate 32, a main board 34, a fan 33, and a main control board bracket 35. The main control board bracket 35 is mounted on the bottom of the base shell 2, the main board 34 is mounted on the main control board bracket 35, and the coil is mounted on the aluminum plate 32. A heating plate is provided on the front panel 1, directly opposite the coil 31. The base shell 2 supports the main board 34 via the main control board bracket 35. The coil 31 heats the heating plate, and the filter plate isolates the coil 31, reducing the probability of the magnetic field generated by the coil 31 affecting the main board 34. The fan 33 cools the aluminum plate 32, reducing the probability of the filter plate affecting the operation of the main board 34 due to high temperature. A button board bracket 36 is also installed on the base shell 2 for mounting the buttons on the main board 34, facilitating user operation.

[0036] Reference Figure 3 and Figure 4 The filter unit 4 includes an air intake grille 41, a filter bracket 42, a grease filter 43, a dust filter 44, and a square-to-round converter 45. The air intake grille 41 is installed in the middle of the panel 1, between two stoves arranged along the length of the panel 1. The panel 1 supports and limits the air intake grille 41. The filter bracket 42 is installed on the upper surface of the bottom shell 2 and connected to the air intake grille 41. The dust filter 44 and the grease filter 43 are both located on the filter bracket 42. The bottom shell 2 supports the filter bracket 42, thereby supporting the dust filter 44 and the grease filter 43 and improving the installation stability of the dust filter 44 and the grease filter 43. The dust filter 44 is used to filter dust in the fumes and external dust, and the grease filter 43 is used to filter grease in the fumes. The square-to-round converter 45 guides the fumes. The dust filter 44 and the grease filter 43 are existing technologies and will not be described in detail here.

[0037] Reference Figure 3 and Figure 5 The air intake grille 41 includes a frame 411 and multiple filter plates 412. All filter plates 412 are connected to the frame 411 and are parallel to each other. The filter plate 412 located in the middle has a wider width than the other filter plates 412. The filter plate 412 in the middle disperses the airflow, ensuring that the airflow fully interacts with the grease filter 43 (see reference). Figure 4 ) and dust filter 44 (reference) Figure 4 ) contact, thereby improving the grease filter 43 (reference) Figure 4 ) and dust filter 44 (reference) Figure 4 The filter plate 412, located in the middle, has multiple grooves 413 on both sides along its width direction, which are convenient for gripping. This allows the user to disassemble the air intake grille 41 by gripping the grooves 413, thus improving the ease of disassembly of the air intake grille 41.

[0038] Reference Figure 1 and Figure 6 The exhaust assembly 5 includes an iron box 51, a fan 52, and an exhaust pipe 53. The iron box 51 is fixedly installed at the lower end of the bottom shell 2. The fan 52 is installed inside the iron box 51 and faces the air outlet of the square-round converter 45. The exhaust pipe 53 is connected to the side wall of the iron box 51. After the fan 52 is started, the fumes pass through the air intake grille 41 and the grease filter 43 from the pot opening with the airflow. Figure 4 ), Dust filter 44 (reference) Figure 4 ), Square-to-Round Converter 45 (Reference) Figure 4 Finally, the fumes are discharged to the outside through the exhaust pipe 53. The exhaust pipe 53 guides the fumes so that they are discharged along a predetermined route.

[0039] Reference Figure 2 The filter bracket 42 includes a housing 421, a straight plate 422, two reinforcing plates 424, and two baffles 423. The housing 421 is fixedly connected to the bottom shell 2 and faces the air intake grille 41. One end of the housing 421 along its length is provided with a guide surface 427. The straight plate 422 is arranged along the length of the housing 421 and inserted into the guide surface 427. The housing 421 initially fixes the straight plate 422 through the guide surface 427. The two baffles 423 are located on both sides of the straight plate 422 along its length and are fixedly connected to both the straight plate 422 and the housing 421. The housing 421 further fixes the straight plate 422 through the baffles 423, which helps to improve the installation stability of the straight plate 422.

[0040] Reference Figure 2 Two reinforcing plates 424 are fixedly installed on both sides of the straight plate 422 along the thickness direction and are fixedly connected to the straight plate 422. A support plate 425 is fixedly installed between the reinforcing plate 424 and the straight plate 422. The support plate 425 reinforces the installation between the reinforcing plate 424 and the straight plate 422. Multiple crossbars 426 are connected between the reinforcing plate 424 and the inner wall of the outer shell 421. The crossbars 426 are inclined from the straight plate 422 toward the lower end face of the outer shell 421. The outer shell 421 supports the reinforcing plate 424 through the crossbars 426, thereby supporting the straight plate 422, further enhancing the installation stability of the straight plate 422 and reducing the probability of the straight plate 422 shaking due to airflow impact.

[0041] Reference Figure 2 and Figure 4Both the dust filter 44 and the grease filter 43 are located on the crossbar 426. The bottom shell 2 supports the grease filter 43 and the dust filter 44 through the crossbar 426. The dust filter 44 is placed at an angle along the crossbar 426, so that the oil fumes first come into contact with the upper end of the grease filter 43 and flow down the grease filter 43 to the bottom. The inner wall of the outer shell 421 is provided with an oil drain groove 61 along the circumference. The oil drain groove 61 contains the grease, so that the grease filter 43 continuously absorbs the grease, which helps to improve the absorption efficiency of the grease filter 43.

[0042] Reference Figure 4 and Figure 6 The square-to-round converter 45 is installed at the lower end of the housing 421 and communicates with the housing 421. One end of the square-to-round converter 45 has a square opening that matches the shape of the lower end of the filter bracket 42, and the other end is round. The square opening allows the airflow to fully contact the grease filter 43 and the dust filter 44, improving the filtration efficiency of the grease filter 43 and the dust filter 44. The round opening disperses the airflow, reducing the impact of the airflow on the fan 52 and the bottom housing 2, which is beneficial to improving the stability of the device operation.

[0043] Reference Figure 6 and Figure 7 The oil storage unit 7 includes an installation box 71 and an oil storage box 72. The oil storage box 72 is installed inside the installation box 71. An installation groove 512 is provided at the top corner of the iron box 51. The shape of the installation box 71 is adapted to the installation groove 512. Two rectangular holes 513 and a gap communicating with the rectangular holes 513 are opened on the inner wall of the iron box 51 near the installation box 71. A connecting plate 712 adapted to the gap is fixedly installed on the side of the installation box 71 near the iron box 51. A rectangular plate 711 is fixedly installed on the side of the connecting plate 712 away from the installation box 71. The rectangular plate 711 is parallel to the inner wall of the iron box 51 and perpendicular to the connecting plate 712. The maximum diameter of the rectangular plate 711 is smaller than the maximum diameter of the rectangular hole 513. The user inserts the rectangular plate 711 into the rectangular hole 513 and slides it towards the gap, so that the connecting plate 712 is inserted into the gap. The gap guides and limits the connecting plate 712. The rectangular plate 711 and the iron box 51 cooperate to fix the mounting box 71, and then fix the oil storage box 72, thereby realizing the disassembly and installation of the mounting box 71, and thus realizing the disassembly of the mounting box 71 of the oil storage box 72. This improves the ease of disassembly of the oil storage box 72, and at the same time, it prevents the mounting box 71 from protruding from the surface of the iron box 51, reducing the probability of accidental injury to the user and improving the aesthetics of the device.

[0044] Reference Figure 2 and Figure 6The oil guiding structure 6 includes an oil drain pipe 62 and an oil drain trough 61. The oil drain trough 61 is located at the lower end of the inner wall of the outer shell 421 and is arranged circumferentially along the inner shell. The oil drain pipe 62 is connected to the top corner of the oil drain trough 61. The end of the oil drain pipe 62 away from the oil drain trough 61 is connected to the oil storage box 72. Both the oil drain trough 61 and the oil drain pipe 62 contain and guide the grease, so that the filtered grease can enter the oil storage box 72 along the oil drain pipe 62. The oil storage box 72 stores the filtered grease, so that the grease filter 43 can continuously adsorb and filter the grease, which is beneficial to improving the adsorption efficiency of the grease filter 43.

[0045] Reference Figure 1 and Figure 6 The exhaust duct 53 includes two ventilation ducts 532, two right-angle adapters 531, and a carbon filter 533. One right-angle adapter 531 is connected between the iron box 51 and the ventilation duct 532, and the other right-angle adapter 531 is connected between the two ventilation ducts 532, so that the fumes are discharged along the ventilation ducts 532 and the right-angle adapters 531 in a direction away from the user, reducing the probability of the discharged fumes causing discomfort to the user. The carbon filter 533 is installed at the air outlet of the ventilation duct 532 for secondary filtration of the fumes, which helps to reduce the pollution of the environment caused by the fumes.

[0046] The implementation principle of the downdraft range hood and cooktop in this embodiment is as follows: The counter supports the filter unit 4, panel 1, and exhaust assembly 5 through the bottom shell 2. The user places the cooktop on the panel 1 and heats it through the heating unit 3. Under the blowing action of the fan 52, the oil fumes from the cooktop pass through the air intake grille 41, dust filter 44, grease filter 43, square-to-round converter 45, right-angle adapter 531, and ventilation pipe 532 in sequence, and are finally discharged to the outside through the carbon filter 533. The grease filter 43 and the dust filter 44... The filter 44 is placed at an angle under the support of the filter bracket 42, so that the oil fume first contacts the top of the grease filter 43 and flows along the inclined direction of the grease filter 43 to the oil drain 61, and then enters the oil drain pipe 62 along the oil drain 61, and finally enters the oil storage box 72 through the oil drain pipe 62. This allows the grease filter 43 to continuously adsorb and filter the grease in the oil fume, reduce the grease content in the gas, reduce the probability of grease accumulating in the ventilation pipe 532 and affecting the operation of the ventilation pipe 532, and help improve the exhaust efficiency of the ventilation pipe 532 for oil fume.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A downdraft range hood and cooktop combo unit, comprising a control panel (1), characterized in that: The lower end of the panel (1) is provided with a bottom shell (2). A filter section (4) for filtering oil fumes is provided between the panel (1) and the bottom shell (2). The panel (1) is provided with heating sections (3) for heating the stove on both sides along the length direction. The filter section (4) is located between the two heating sections (3). The lower end of the filter section (4) is connected to an oil guiding structure (6). The oil guiding structure (6) is connected to an oil storage section (7). The grease after being filtered by the filter section (4) enters the oil storage section (7) through the oil guiding structure (6) under the action of gravity. The lower end of the bottom shell (2) is provided with an exhaust assembly (5) for discharging the filtered oil fumes.

2. The downdraft range hood and cooktop combo according to claim 1, characterized in that: The filter section (4) includes an air intake grille (41), a filter bracket (42), an grease filter (43), a dust filter (44), and a square-to-round converter (45). The air intake grille (41) is detachably connected to the panel (1). The filter bracket (42) is located at the upper end of the bottom shell (2). The dust filter (44) and the grease filter (43) are both located on the filter bracket (42) and are placed at an angle along the surface of the filter bracket (42). The square-to-round converter (45) is fixed at the lower end of the filter bracket (42), and its circular side is connected to the exhaust assembly (5). The fumes pass through the air intake grille (41), the grease filter (43), the dust filter (44), and the square-to-round converter (45) in sequence, and are discharged through the exhaust assembly (5).

3. The downdraft range hood and cooktop combo according to claim 2, characterized in that: The air intake grille (41) includes a frame (411) and several filter plates (412). All filter plates (412) are located inside the frame (411) and connected to the inner wall of the frame (411). The width of the filter plate (412) located in the middle position is greater than the width of the filter plates (412) on both sides.

4. The downdraft range hood and cooktop combo according to claim 2, characterized in that: The filter bracket (42) includes a housing (421), a straight plate (422), two reinforcing plates (424), and two baffles (423). The housing (421) is fixed inside the bottom shell (2). The straight plate (422) is located inside the housing (421) and is arranged along the length of the housing (421). The two baffles (423) are located on both sides of the straight plate (422) along the length direction and are fixedly connected to the straight plate (422) of the housing (421). The two reinforcing plates (424) are fixed on both sides of the straight plate (422) along the thickness direction. The reinforcing plate (424) is in contact with the baffle (423) on both sides along the length direction. Several support plates (425) are fixed between the reinforcing plate (424) and the straight plate (422). Several crossbars (426) are fixed between the reinforcing plate (424) and the outer shell (421). The crossbars (426) are inclined from the reinforcing plate (424) to the outer shell (421). One end of the dust filter (44) and the grease filter (43) along the width direction is placed on the reinforcing plate (424), and the other end is in contact with the inner wall of the filter bracket (42).

5. A downdraft range hood and cooktop combo according to claim 1, characterized in that: The oil guiding structure (6) includes an oil drain pipe (62) and an oil drain groove (61). The oil drain groove (61) is opened on the inner wall of the outer shell (421) and arranged around the outer shell (421). The oil drain pipe (62) is connected to the oil drain groove (61). The side of the oil drain pipe (62) away from the oil drain groove (61) is connected to the oil storage part (7).

6. The downdraft range hood and cooktop combo according to claim 1, characterized in that: The exhaust assembly (5) includes an iron box (51), a fan (52), and an exhaust pipe (53). The iron box (51) is located at the lower end of the bottom shell (2). The fan (52) is located inside the iron box (51) and is directly opposite the lower end of the square-round converter (45). The exhaust pipe (53) is connected to the iron box (51) and is used to exhaust oil fumes to the outside. The oil storage part (7) is located at the top corner of the iron box (51).

7. A downdraft range hood and cooktop combo according to claim 6, characterized in that: The iron box (51) has an installation groove (512) at the top corner. The installation groove (512) is recessed into the iron box (51). The oil storage part (7) includes an installation box (71) and an oil storage box (72). The oil storage box (72) is located inside the installation box (71). The installation box (71) is adapted to the shape of the installation groove (512). The installation box (71) and the iron box (51) are detachably connected. The iron box (51) has a through hole (511) for accommodating the oil storage box (72). The side of the oil storage box (72) passing through the through hole (511) is connected to the oil drain pipe (62).

8. A downdraft range hood and cooktop combo according to claim 4, characterized in that: The outer casing (421) has a guide surface (427) at one end along the length direction inside. The guide surface (427) is inclined from one end of the filter bracket (42) toward the middle part, and the straight plate (422) is inserted into the guide surface (427).

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