An oil fume treatment device

Abstract

The present application relates to the technical field of kitchen appliances, and particularly relates to an oil fume treatment device. The oil fume treatment device comprises a smoke gathering mechanism, the smoke gathering mechanism comprises a smoke gathering cavity body and a movable cavity, the smoke gathering cavity body comprises a back plate, the movable cavity comprises a first air inlet and has a first position of being accommodated in the smoke gathering cavity body and a second position of being extended out of the smoke gathering cavity body, when the movable cavity is in the second position, the movable cavity and the back plate form a second air inlet, and the second air inlet is located at the rear side of the first air inlet. When the oil fume treatment device is in a working state, i.e. when the movable cavity is in the second position, an additional second air inlet is formed between the movable cavity and the back plate, the second air inlet is closely attached to a wall, the second air inlet can quickly and effectively absorb the oil fume near the wall and the oil fume escaping from the first air inlet, through the arrangement of the additional second air inlet, the wall can be prevented from being polluted by oil stains, and the cleanliness of the kitchen can be effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to an oil fume treatment device. Background Technology

[0002] Existing fume treatment devices typically include a main unit and a fume collection mechanism. The main unit is located at the top of the fume collection mechanism and is connected to it. The fume collection mechanism has an air inlet. The main unit can generate negative pressure, which allows the fumes outside the fume treatment device to pass through the air inlet, the inside of the fume collection mechanism, and the main unit in sequence. The filtered gas is finally discharged from the air outlet of the main unit.

[0003] The smoke collection mechanism includes a smoke collection chamber body, a movable chamber, a drive mechanism, and an oil cup. The air inlet is located on the movable chamber. The drive mechanism allows the movable chamber to switch between a first position extending downwards from the smoke collection chamber body and a second position retracted into the smoke collection chamber body. The oil cup is located at the bottom of the movable chamber. When the movable chamber is in the second position, there is no smoke-absorbing structure at the oil cup location, which means that the smoke near the oil cup cannot be absorbed quickly and effectively. This smoke in the area will cause pollution of the kitchen walls, affecting the cleanliness of the kitchen. Furthermore, since the size of the air inlet remains constant, when the smoke concentration is high, the concealed range hood cannot effectively absorb the smoke, further affecting the cleanliness of the kitchen.

[0004] Therefore, there is an urgent need to design a new fume treatment device to solve the problems of severe kitchen wall pollution, poor kitchen environment cleanliness, and poor fume extraction effect. Summary of the Invention

[0005] The purpose of this invention is to provide an oil fume treatment device that effectively improves the cleanliness of the kitchen environment and enhances the oil fume extraction effect of the device.

[0006] To achieve this objective, the present invention adopts the following technical solution: A fume treatment device includes a fume collection mechanism, the fume collection mechanism comprising: The smoke collection chamber body includes a back plate; and The movable cavity includes a first air inlet and has a first position that is housed within the smoke collection cavity body and a second position that extends out of the smoke collection cavity body. When the movable cavity is in the second position, the movable cavity and the back plate form a second air inlet, and the second air inlet is located behind the first air inlet.

[0007] As an alternative, the size of the second air inlet and / or the extent to which the movable cavity extends beyond the smoke collection chamber increases with the increase of the oil fume concentration.

[0008] As an optional solution, during the process of the movable cavity switching from the first position to the second position, the space inside the movable cavity gradually increases; or The movable cavity includes a frame and a movable cavity body having the first air inlet. The frame can move relative to the smoke collection cavity body in the vertical direction, and the movable cavity body can move relative to the frame in the front-back direction.

[0009] As an optional solution, the smoke collection mechanism further includes: A first filtration mechanism is disposed at the first air inlet; and The second filtration mechanism, when the movable cavity is in the second position, is partially located downstream of the first air inlet and partially located downstream of the second air inlet.

[0010] As an optional solution, the smoke-gathering mechanism further includes a driving mechanism. The movable cavity includes a movable cavity body, a first connecting mechanism, and a second connecting mechanism. The second connecting mechanism is located behind the first connecting mechanism. The upper ends of the first connecting mechanism and the upper ends of the second connecting mechanism are movably connected to the smoke-gathering cavity body. The lower ends of the first connecting mechanism and the lower ends of the second connecting mechanism are movably connected to the movable cavity body. The movable cavity is movably connected to the driving mechanism.

[0011] As an alternative, the second connecting mechanism is movably connected to the second filtering mechanism, and the second connecting mechanism can guide the oil on the second filtering mechanism into the movable cavity body.

[0012] As an optional solution, the second filter mechanism is provided with a first oil leak port, which is arranged in the front-to-back direction between the first connecting mechanism and the second connecting mechanism.

[0013] As an alternative, the second filter mechanism is configured to protrude downwards, and the first oil leak is located at the lowest position of the second filter mechanism.

[0014] As an optional solution, the second filtration mechanism includes a first filter screen, a connecting plate, and a second filter screen connected sequentially from front to back. The first filter screen is inclined downward from front to back, and the second filter screen is inclined upward from front to back. At least a portion of the first oil leakage port is arranged in the connection area of ​​the first filter screen, the connecting plate, and the second filter screen.

[0015] As an optional solution, the connecting plate includes a first guide plate and a second guide plate arranged in a left-right direction. The first guide plate is inclined downward from left to right, and the second guide plate is inclined downward from right to left. At least part of the first oil leakage port is arranged at the connection position of the first guide plate and the second guide plate.

[0016] As an optional solution, the movable cavity is provided with a second oil leak. When the movable cavity is in the second position, the first oil leak, the second oil leak, and the second opening of the oil cup are arranged in sequence from top to bottom. The oil on the second filter mechanism passes through the first oil leak and the second oil leak in sequence and then enters the oil cup through the second opening.

[0017] As an alternative, when the movable cavity is in the second position, at least a portion of the projection of the second filtering mechanism onto the horizontal plane lies within the projection of the second opening onto the horizontal plane; and / or The second connecting mechanism is provided with a guide groove having an upper opening and a lower opening; The movable cavity body can receive oil flowing out from the lower opening, and the width of the guide groove gradually decreases from top to bottom in the left-right direction; and / or Wherein, the flow guide groove is located on the front side of the rear side plate of the movable cavity body; and / or The guide groove is located on the front or rear side of the second connecting mechanism.

[0018] As an optional solution, the back plate is provided with a first recycling tank, which is used to recycle the oil entering the fume from the second air inlet.

[0019] As an optional solution, the smoke collection mechanism further includes an oil cup, and a third oil drain is provided on the first recovery tank. The oil cup is disposed in the movable cavity and communicates with the interior of the movable cavity. When the movable cavity is in the first position, the third oil drain is connected to the oil cup; when the movable cavity is in the second position, the oil cup is separated from the smoke collection cavity body, and the third oil drain is in a blocked state.

[0020] The beneficial effects of this invention are: The fume treatment device provided by this invention includes a fume collection mechanism, which comprises a fume collection chamber body and a movable cavity. The fume collection chamber body includes a back plate, and the movable cavity includes a first air inlet and has a first position where it is housed within the fume collection chamber body and a second position extending out of the fume collection chamber body. When the movable cavity is in the second position, the movable cavity and the back plate form a second air inlet, which is located behind the first air inlet. When the fume treatment device is in operation, i.e., when the movable cavity is in the second position, an additional second air inlet is formed between the movable cavity and the back plate. This second air inlet is tightly attached to the wall, and can quickly and effectively absorb fumes near the wall and fumes escaping from the first air inlet. By setting up this additional second air inlet, the wall can be prevented from being contaminated by oil stains, effectively ensuring the cleanliness of the kitchen.

[0021] Furthermore, when the active cavity is in the second position, both the first and second air inlets can absorb the fumes, which means that the overall air intake area of ​​the fume treatment device can be effectively increased. When the fume concentration is high, the concealed range hood can effectively absorb the high concentration of fumes, further ensuring the cleanliness of the kitchen. Attached Figure Description

[0022] Figure 1 This is a structural diagram of a concealed range hood provided by existing technology; Figure 2 This is a schematic diagram of the concealed range hood in the first position according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the cabinet and the hidden range hood in the first position provided in Embodiment 1 of the present invention; Figure 4 This is a structural schematic diagram of the cabinet and the hidden range hood in the second position provided in Embodiment 1 of the present invention; Figure 5 This is a cross-sectional view of the concealed range hood in the first position according to Embodiment 1 of the present invention; Figure 6 This is a cross-sectional view of the concealed range hood in the second position according to Embodiment 1 of the present invention; Figure 7 yes Figure 6 A magnified view of a section at point A in the middle; Figure 8 This is a cross-sectional view of the concealed range hood in the second position according to Embodiment 1 of the present invention; Figure 9 This is a partially enlarged view of the concealed range hood provided in Embodiment 1 of the present invention; Figure 10 This is a schematic diagram of the structure of a partially concealed range hood provided in Embodiment 1 of the present invention; Figure 11This is a schematic diagram of the flow guide channel provided in Embodiment 1 of the present invention; Figure 12 yes Figure 8 A magnified view of a section at point E in the middle; Figure 13 This is a schematic diagram of the concealed range hood in the first position according to Embodiment 1 of the present invention; Figure 14 This is a schematic diagram of the concealed range hood in the second position according to Embodiment 1 of the present invention; Figure 15 This is a schematic diagram of the first structure of the concealed range hood provided in Embodiment 2 of the present invention; Figure 16 This is a schematic diagram of the second structure of the concealed range hood provided in Embodiment 2 of the present invention; Figure 17 This is a schematic diagram of the third structure of the concealed smoke hood provided in Embodiment 2 of the present invention.

[0023] In the picture: 1000, Concealed range hood; 2000, Cabinet; 2100, Mounting cavity; 3000, Wall; 100. Smoke collection mechanism; 200. Main unit housing; 300. Oil cup; 310. Second recovery tank; 3101. Second opening; 320. Trigger unit; 10. Smoke collection chamber body; 11. Front end plate; 111. First front surface; 112. First rear surface; 113. Lower surface; 12. Back plate; 121. Second front surface; 122. Second rear surface; 123. First recovery tank; 1231. Third oil drain; 1232. First opening; 13. Second filtration mechanism; 131. First filter screen; 132. Connecting plate; 1321. First guide plate; 1322. Second guide plate; 133. Second filter screen; 134. First oil drain; 16. Protective cover; 20. Movable cavity; 21. Movable cavity body; 211. First air inlet; 212. Front side; 213. Rear side panel; 214. Upper side; 216. Second oil drain; 217. Base plate; 218. Oil collection trough; 22. First connecting mechanism; 227. Clearance space; 23. Second connecting mechanism; 232. Guide channel; 2321. Upper opening; 2322. Lower opening; 24. Pivot shaft; 241. Clearance opening; 25. Frame; 40. Flip-board; 50. Smoke containment space; 60. Drive mechanism; 61. Linear drive body; 62. Output shaft; 400. Blocking mechanism; 410. First mounting component; 411. Guide groove; 420. Reset component; 430. Moving component; 431. Guide part; 432. Insertion part; 433. Limiting part; 500. First filtration unit; 800, Auxiliary cavity; 810, Second air inlet. Detailed Implementation

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings, not all of them.

[0025] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of the embodiments disclosed herein, terms such as "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0028] Example 1 like Figure 2As shown, this embodiment of the present disclosure provides an oil fume treatment device, which includes a main unit 200 and a smoke collection mechanism 100. The main unit 200 is disposed at the upper end of the smoke collection mechanism 100 and is connected to the smoke collection mechanism 100. The smoke collection mechanism 100 is provided with a first air inlet 211. The main unit 200 can generate negative pressure, which allows oil fumes from outside the oil fume treatment device to pass sequentially through the first air inlet 211, the interior of the smoke collection mechanism 100, and the main unit 200. The filtered gas is finally discharged from the air outlet of the main unit 200. This oil fume treatment device can be a top-mounted range hood, a side-mounted range hood, a concealed range hood, etc. All devices capable of achieving oil fume treatment functions are included in this optional embodiment. This embodiment of the present disclosure mainly uses a concealed range hood 1000 as an example for description.

[0029] In an alternative embodiment, such as Figures 2-4 As shown, the smoke collection mechanism 100 includes a smoke collection chamber body 10 and a movable cavity 20. The main unit 200 and the smoke collection chamber body 10 are housed in the mounting cavity 2100 of the cabinet 2000. The cabinet 2000 can effectively conceal the main unit 200 and the smoke collection chamber body 10, preventing them from being exposed in the kitchen environment and ensuring the aesthetics of the kitchen. Figures 2-6 As shown, the first air inlet 211 is located on the movable cavity 20. The movable cavity 20 and the smoke collection cavity body 10 together form the smoke collection space 50. The movable cavity 20 can switch between a first position where it is stored in the smoke collection cavity body 10 and a second position where it extends out of the smoke collection cavity body 10. When the movable cavity 20 is in the first position, the cabinet 2000 can also achieve a good hiding effect on the movable cavity 20. When the movable cavity 20 is in the second position, the first air inlet 211 can be closer to the oil fumes, thereby achieving a better absorption effect of the hidden range hood 1000 on the oil fumes and improving the oil fume absorption effect of the hidden range hood 1000.

[0030] In summary, as Figures 2-4 As shown, the concealed range hood 1000 maintains a small size when it is in the storage state, while also increasing the smoke extraction area when in the second position, effectively improving the smoke extraction effect of the range hood. The downward movement of the first air inlet 211 further enhances the smoke extraction effect of the concealed range hood 1000, enabling better absorption of high-concentration smoke.

[0031] The concealed range hood 1000 is particularly suitable for modern integrated kitchens. When off, its hidden design allows for fully integrated installation with custom cabinetry (2000), making it visually invisible and achieving a balance between function and aesthetics. This deep integration not only frees up space compared to traditional top-mounted or side-mounted range hoods, but is also ideal for open kitchens and small to medium-sized kitchens that prioritize minimalism. It seamlessly integrates fume extraction with the kitchen workspace, creating a spacious, clean, and high-quality cooking environment while efficiently removing smoke.

[0032] In an alternative embodiment, such as Figures 2-6 As shown, the concealed range hood 1000 also includes an oil cup 300, which is connected to the interior of the smoke collection mechanism 100. The oil cup 300 can collect the oil flowing out from the main unit 200 and the smoke collection mechanism 100, which can prevent the oil inside the concealed range hood 1000 from dripping onto the stovetop and ensure that the stovetop is always clean.

[0033] In an alternative embodiment, such as Figures 2-4 As shown, the smoke collection mechanism 100 also includes a flap 40, which can, as Figure 2 The recovery state shown and as follows Figure 4 The diagram shows the switching between the extended and unfolded states. (Example) Figure 2 As shown, when the flip panel 40 is in the retracted state, the concealed range hood 1000 can be well hidden in the cabinet 2000, preventing the main unit 200 and the smoke collection chamber 10 from being exposed in the kitchen environment, thus ensuring the aesthetics of the kitchen environment. Figure 4 As shown, when the flap 40 is in the extended state, the flap 40 can form a certain space for oil fumes to gather, thereby achieving a better oil fume extraction effect for the hidden range hood 1000.

[0034] like Figure 1 As shown, the existing concealed range hood 1000 includes a smoke-collecting chamber body 10, a movable cavity 20, a drive mechanism (not shown in the figure), and an oil cup 300. A first air inlet 211 is located on the movable cavity 20. The drive mechanism allows the movable cavity 20 to switch between a first position extending downwards from the smoke-collecting chamber body 10 and a second position retracted into the smoke-collecting chamber body 10. The oil cup 300 is located at the bottom of the movable cavity 20. When the movable cavity 20 is in the second position, there is no smoke-absorbing structure at the position of the oil cup 300, resulting in the inability to quickly and effectively absorb the smoke near the oil cup 300. This smoke in the area will cause pollution of the kitchen wall 3000, affecting the cleanliness of the kitchen. Furthermore, since the size of the first air inlet 211 remains constant, when the smoke concentration is high, the concealed range hood cannot effectively absorb the smoke, further affecting the cleanliness of the kitchen.

[0035] To solve the above problems, such as Figure 5 and Figure 6 As shown, the concealed smoke hood 1000 of this embodiment includes a smoke gathering mechanism 100. The smoke gathering mechanism 100 includes a smoke gathering chamber body 10 and a movable cavity 20. The smoke gathering chamber body 10 includes a back plate 12. The movable cavity 20 includes a first air inlet 211 and has a first position that is housed in the smoke gathering chamber body 10 and a second position that extends out of the smoke gathering chamber body 10. When the movable cavity 20 is in the second position, the movable cavity 20 and the back plate 12 form a second air inlet 810. The second air inlet 810 is located behind the first air inlet 211.

[0036] In other words, when the concealed range hood 1000 is in operation, that is, when the movable cavity 20 is in the second position, an additional second air inlet 810 is formed between the movable cavity 20 and the back panel 12. This second air inlet 810 is tightly attached to the back panel 12. Figure 1 The wall 3000 shown has a second air inlet 810 that can quickly and effectively absorb the oil fumes near the wall 3000 and the oil fumes escaping from the first air inlet 211. By setting up this additional second air inlet 810, the wall 3000 can be prevented from being contaminated by oil stains, and the cleanliness of the kitchen can be effectively guaranteed.

[0037] Furthermore, when the active cavity 20 is in the second position, both the first air inlet 211 and the second air inlet 810 can absorb the oil fumes, which means that the overall air intake area of ​​the concealed range hood 1000 can be effectively increased. When the oil fume concentration is high, the concealed range hood 1000 can effectively absorb the high concentration of oil fumes, further ensuring the cleanliness of the kitchen.

[0038] In an alternative embodiment, such as Figure 6 As shown, the movable cavity 20 and the back plate 12 form an auxiliary cavity 800. The auxiliary cavity 800 can achieve a strong absorption effect on the oil fumes near the wall 3000, realizing the fast and efficient absorption effect of the hidden range hood 1000 on the oil fumes near the wall 3000.

[0039] In an alternative embodiment, such as Figure 6 As shown, the extent to which the movable cavity 20 extends beyond the smoke-collecting cavity body 10 increases with the increase of the oil fume concentration. The greater the extent to which the movable cavity 20 extends beyond the smoke-collecting cavity body 10, the better the absorption effect of the movable cavity 20 on the oil fume, and the better the absorption effect of the hidden smoke hood 1000 on high-concentration oil fumes.

[0040] In an alternative embodiment, such as Figure 6As shown, the larger the second air inlet 810 is, the better the absorption effect of the second air inlet 810 on the oil fumes near the wall 3000, and the better the overall oil fume absorption effect of the hidden range hood 1000.

[0041] In summary, by driving the movable cavity 20 individually, the size of the second air inlet 810 can be adjusted, and the extent to which the movable cavity 20 extends out of the smoke-collecting chamber 10 can be dynamically linked according to the concentration of oil fumes. As the concentration of oil fumes increases, the extent to which the movable cavity 20 extends out of the smoke-collecting chamber 10 increases. The change in the state of the movable cavity 20 can increase the size of the second air inlet 810, thereby achieving a better absorption effect of the concealed range hood 1000 on higher concentrations of oil fumes. This allows the working state of the concealed range hood 1000 to be dynamically balanced and adjusted according to the concentration of oil fumes, ensuring that the concealed range hood 1000 always has a good absorption effect on oil fumes in different states, thus ensuring a good cleanliness in the kitchen and the walls 3000.

[0042] Because the volume of the movable cavity 20 in the existing concealed smoke hood 1000 remains constant, if the movable cavity 20 is designed to be larger, the smoke collection mechanism 100 and the concealed smoke hood 1000 in the closed state will be larger; if the movable cavity 20 is designed to be smaller, the smoke collection effect of the smoke collection mechanism 100 and the concealed smoke hood 1000 in the working state will be poor.

[0043] To solve the above problems, such as Figure 5 and Figure 6 As shown, in an optional embodiment, during the process of switching the movable cavity 20 from the first position to the second position, the space inside the movable cavity 20 gradually increases. That is, when the hidden range hood 1000 is in a non-working state, the movable cavity 20 is in the first position and is in a retracted state, ensuring a small volume when the hidden range hood 1000 is in a non-working state; when the hidden range hood 1000 is in a working state, the movable cavity 20 is in the second position and is in an extended state, which can ensure a better smoke extraction effect of the hidden range hood 1000 during use.

[0044] In summary, the concealed range hood 1000 of this disclosure embodiment can ensure good oil fume extraction effect during use, and also ensure a small size when not in use.

[0045] In an alternative embodiment, such as Figure 5 and Figure 6 As shown, during the process of switching the movable cavity 20 from the unfolded state to the retracted state, the movable cavity 20 switches from the second position to the first position. The hidden range hood 1000 of this embodiment can not only ensure a good oil fume extraction effect during use, but also ensure a small volume when not in operation.

[0046] In an alternative embodiment, such as Figure 13 and Figure 14 As shown, the smoke-collecting chamber body 10 includes a front panel 11 and a back panel 12 arranged at intervals along the front-back direction. The front panel 11 includes a first front surface 111, a first rear surface 112, and a lower surface 113. The back panel 12 includes a second front surface 121 and a second rear surface 122. The movable cavity 20 includes a front side panel 212 and a rear side panel 213 arranged along the front-back direction. The movable cavity 20 also includes an upper side panel 214. When the movable cavity 20 is in the first position, the front side panel 212 is spaced behind the first rear surface 112, and the rear side panel 213 is located in front of the second front surface 121. The rear side panel 213 is adjacent to or abuts the second front surface 121. It is easy to see that when the movable cavity 20 is in the first position, the overall volume of the movable cavity 20 is small, which can effectively reduce the volume of the smoke-collecting chamber body 10, thereby making the overall volume of the concealed smoke machine 1000 smaller.

[0047] In an alternative embodiment, such as Figure 13 As shown, when the movable cavity 20 is in the first position, the distance between the front side 212 and the rear side panel 213 in the front-rear direction is the first distance L1, and the distance between the first rear surface 112 and the front side 212 in the front-rear direction is L2. The range of L2 / L1 is 0 to 1 / 2. Through the design of the aforementioned structure, the movable cavity 20 in the retracted state can have a smaller size in the front-rear direction, which can realize the thin and light design of the hidden range hood 1000.

[0048] For example, such as Figure 13 As shown, L2 / L1 can be 0, 1 / 10, 1 / 8, 1 / 6, 1 / 4, 1 / 2, etc. All values ​​in the range of 0 to 1 / 2 are within the protection scope of this optional embodiment, and this optional embodiment will not be listed one by one.

[0049] Among them, such as Figure 14 As shown, when the movable cavity 20 is in the second position, the front side 212 is spaced in front of the first front surface 111, the rear side panel 213 is spaced in front of the second front surface 121, and the upper side 214 is located below the lower surface 113. It is easy to see that when the movable cavity 20 is in the second position, the movable cavity 20 moves forward a greater distance as a whole, and the first air inlet 211 moves forward a greater distance, thereby achieving a better smoke extraction effect for the movable cavity 20 on the front of the hidden range hood 1000.

[0050] Among them, such as Figure 14As shown, when the movable cavity 20 is in the second position, the distance between the front side 212 and the first front surface 111 in the front-rear direction is the third distance L3, and the range of L3 / L1 is 1 / 10 to 1 / 2. The distance between the rear side plate 213 and the second front surface 121 in the front-rear direction is L4, and the range of L4 / L1 is 1 / 10 to 1 / 2. Through the design of the aforementioned structure, the design of the first air inlet 211 of the movable cavity 20 in the unfolded state being relatively forward can be achieved.

[0051] For example, such as Figure 14 As shown, L3 / L1 can be 1 / 10, 1 / 8, 1 / 6, 1 / 4, 1 / 2, etc. All values ​​in the range of 1 / 10 to 1 / 2 are within the protection scope of this optional embodiment, and this optional embodiment will not be listed one by one.

[0052] For example, such as Figure 14 As shown, L4 / L1 can be 1 / 10, 1 / 8, 1 / 6, 1 / 4, 1 / 2, etc. All values ​​in the range of 1 / 10 to 1 / 2 are within the protection scope of this optional embodiment, and this optional embodiment will not be listed one by one.

[0053] In an alternative embodiment, such as Figure 5 , Figure 6 and Figure 8 As shown, the smoke-gathering mechanism 100 also includes a drive mechanism 60. The movable cavity 20 includes a movable cavity body 21, a first connecting mechanism 22, and a second connecting mechanism 23. The second connecting mechanism 23 is located behind the first connecting mechanism 22. The upper ends of the first connecting mechanism 22 and the second connecting mechanism 23 are movably connected to the smoke-gathering cavity body 10. The lower ends of the first connecting mechanism 22 and the second connecting mechanism 23 are movably connected to the movable cavity body 21. The movable cavity 20 is movably connected to the drive mechanism 60. During the switching process between the first and second positions of the movable cavity 20, the switching between the retracted and unfolded states of the movable cavity 20 can be achieved through a single drive mechanism 60. The action of switching between different working states of the hidden smoke machine 1000 is simple, and it can achieve rapid switching between different working states of the hidden smoke machine 1000. The number of drive mechanisms 60 used in the hidden smoke machine 1000 is small and simple, which can effectively simplify the control mode and its own size of the hidden smoke machine 1000.

[0054] In an optional embodiment, the concealed range hood 1000 may further include an oil fume concentration detection mechanism (not shown in the figure) and a control mechanism (not shown in the figure). The oil fume concentration detection mechanism can detect the oil fume concentration in the environment. Both the oil fume concentration detection mechanism and the drive mechanism 60 are communicatively connected to the control mechanism, and the working state of the drive mechanism 60 is dynamically adjusted according to the oil fume concentration detected by the oil fume concentration detection mechanism.

[0055] In an alternative embodiment, such as Figure 6 As shown, through the structural arrangement of the movable cavity 20, when the movable cavity 20 switches from the first position to the second position, the movable cavity body 21 moves forward and downward relative to the smoke-collecting cavity body 10. When the movable cavity 20 is in the second position, the first air inlet 211 is in a lower and forward position, making the first air inlet 211 closer to the smoke source, effectively improving the smoke extraction effect of the hidden range hood 1000.

[0056] In an alternative embodiment, such as Figure 5 , Figure 6 and Figure 8 As shown, the drive mechanism 60 can be a linear drive mechanism. One end of the linear drive mechanism is rotatably connected to the smoke collection chamber body 10 or the main unit 200. Any one of the movable chamber body 21, the first connecting mechanism 22, and the second connecting mechanism 23 is rotatably connected to the other end of the linear drive mechanism. During the process of the linear drive mechanism switching from the compression state to the extension state, the linear drive mechanism can drive any one of the movable chamber body 21, the first connecting mechanism 22, and the second connecting mechanism 23 to move. The corresponding structure drives the overall deformation and movement of the movable chamber 20. During the process of the movable chamber 20 switching from the retracted state to the unfolded state, the movable chamber 20 switches from the first position to the second position. When the linear drive mechanism performs linear extension movement, the first air inlet 211 moves forward and downward at the same time. When the movable chamber 20 is in the second position, the first air inlet 211 is in a lower and forward position, making the first air inlet 211 closer to the smoke source, effectively improving the smoke extraction effect of the hidden range hood 1000 in the working state. In addition, during the process of the movable cavity 20 switching from the first position to the second position, the first air inlet 211 moves forward and downward simultaneously, which enables the first air inlet 211 to quickly reach a lower and forward position, and enables the hidden range hood 1000 to achieve a fast and better absorption effect of oil fumes.

[0057] For example, the linear drive mechanism can be a linear motor, a linear drive cylinder, a lead screw and nut structure, etc. All structures capable of achieving linear drive are within the protection scope of this optional embodiment.

[0058] In an alternative embodiment, such as Figure 5 , Figure 6 and Figure 8As shown, the linear drive mechanism includes a linear drive body 61 and an output shaft 62. The output shaft 62 can move linearly relative to the linear drive body 61. The linear drive body 61 is rotatably connected to the smoke collection chamber body 10 or the main unit 200. The output shaft 62 is directly or indirectly rotatably connected to any one of the movable chamber body 21, the first connecting mechanism 22, and the second connecting mechanism 23. The output shaft 62 passes through the second filter mechanism 13 of the smoke collection chamber body 10, which can prevent the second filter mechanism 13 from interfering with the output shaft 62 and ensure the smooth movement of the linear drive mechanism.

[0059] In an alternative embodiment, such as Figure 8 As shown, the smoke collection chamber body 10 includes a protective cover 16, which is located around the linear drive body 61. The rear side of the protective cover 16 is attached to the back panel of the main unit 200, and the protective cover 16 is attached to the second filter mechanism 13. The protective cover 16, the main unit 200, and the second filter mechanism 13 together cover the entire linear drive body 61, achieving a good oil-proof effect on the linear drive body 61 and ensuring that the linear drive mechanism always has a good working state and action accuracy.

[0060] In an alternative embodiment, such as Figure 5 , Figure 6 , Figure 8 as well as Figure 13 As shown, during the switching process between the first position and the second position of the movable cavity 20, the first air inlet 211 remains unchanged in its own posture and moves forward and downward relative to the smoke collection cavity body 10. During the forward and downward movement of the first air inlet 211, it can ensure that the first air inlet 211 always maintains a horizontal posture, and can ensure that the first air inlet 211 on the movable cavity body 21 always has a good air intake effect, and ensure that the hidden range hood 1000 always has a good oil fume extraction effect.

[0061] In an alternative embodiment, such as Figure 13 As shown, the position where the upper end of the first connecting mechanism 22 is rotatably connected to the smoke collection chamber body 10 is the first connecting position P; the position where the lower end of the first connecting mechanism 22 is rotatably connected to the movable chamber body 21 is the second connecting position Q; the position where the upper end of the second connecting mechanism 23 is rotatably connected to the smoke collection chamber body 10 is the third connecting position M; and the position where the lower end of the second connecting mechanism 23 is rotatably connected to the movable chamber body 21 is the fourth connecting position N. Here, PQNM form a parallelogram structure. Through this structural design, the first air inlet 211 can be kept in a horizontal position during the forward and downward movement process, and the first air inlet 211 on the movable chamber body 21 can always have a good air intake effect.

[0062] In an alternative embodiment, such as Figure 6 , Figure 8as well as Figure 14 As shown, when the movable cavity 20 is in the second position, the first connecting mechanism 22 protrudes to the rear, and a clearance space 227 is formed on the front side of the first connecting mechanism 22. When the movable cavity 20 switches from the first position to the second position, that is, when the first air inlet 211 moves downward and forward at the same time, the clearance space 227 can avoid interference between the first connecting mechanism 22 and the smoke collection cavity body 10, and can also avoid interference between the first connecting mechanism 22 and the cabinet 2000. Structurally, it can ensure that the movable cavity 20 of the hidden range hood 1000 moves forward and downward synchronously. The structure is simple and ingenious, and solves the technical problem that the movable cavity 20 of the hidden range hood 1000 can only move in the vertical direction, which has been difficult for people in the art to overcome.

[0063] Furthermore, through the structural arrangement of the first connecting mechanism 22, the first air inlet 211 can extend further forward from the smoke collection chamber body 10, thereby achieving a better smoke extraction effect for the first air inlet 211.

[0064] In an alternative embodiment, such as Figure 5 , Figure 6 , Figure 8 as well as Figure 13 As shown, the first connecting mechanism 22 is a connecting plate extending in the left-right direction, and the second connecting mechanism 23 is a connecting plate extending in the left-right direction. The smoke-collecting chamber body 10, the movable chamber body 21, the first connecting mechanism 22, and the second connecting mechanism 23 are jointly assembled to form the smoke-collecting space 50, which can achieve the formation of a larger volume smoke-collecting space 50 and further improve the smoke extraction effect of the hidden range hood 1000. In addition, due to the design of the connecting plates of the first connecting mechanism 22 and the second connecting mechanism 23, a better sealing effect can be achieved for the smoke-collecting space 50, so that the smoke-collecting space 50 can have a better absorption effect for smoke. Furthermore, the smoke-collecting mechanism 100 with this design involves fewer plate structures and has a simple structure.

[0065] In an alternative embodiment, such as Figure 5 , Figure 6 as well as Figure 8As shown, the second connecting mechanism 23 is a connecting plate extending in the left-right direction. The lower end of the second connecting mechanism 23 is pivotally connected to the smoke collection chamber body 10 through a long pivot shaft 24, and the upper end of the second connecting mechanism 23 is pivotally connected to the smoke collection chamber body 10. When the movable cavity 20 is in the first position, the second position, or any intermediate position, the connection through the pivot shaft 24 improves the sealing effect between the lower end of the second connecting mechanism 23 and the smoke collection chamber body 10, and also improves the sealing effect between the upper end of the second connecting mechanism 23 and the smoke collection chamber body 10. This further improves the sealing effect of the smoke collection space 50, reduces air volume loss, and effectively improves the smoke extraction effect of the concealed range hood 1000. The concealed range hood 1000 has a good smoke extraction effect, preventing oil fumes or oil from overflowing from the smoke collection space 50, ensuring a clean kitchen environment, and improving the user experience.

[0066] In an optional embodiment, the first connecting mechanism 22 or the second connecting mechanism 23 may also be a connecting rod structure (not shown in the figure). Through the design of the connecting rod, the structure of the connecting rod is simple, small in size and light in weight, which can realize the lightweight design of the movable cavity 20, thereby effectively reducing the volume of the hidden smoke machine 1000. The driving mechanism 60 only applies a small driving force to achieve effective driving of the movable cavity 20.

[0067] In an alternative embodiment, such as Figure 6 and Figure 8 As shown, the smoke collection mechanism 100 also includes a first filter mechanism 500 and a second filter mechanism 13. The first filter mechanism 500 is located at the first air inlet 211. When the movable cavity 20 is in the second position, part of the second filter mechanism 13 is located downstream of the first air inlet 211. The first air inlet 211 is in a forward position. The overall concentration of oil fumes entering from the first air inlet 211 is relatively high. The oil fumes entering from the first air inlet 211 pass through the first filter mechanism 500 and the second filter mechanism 13 in sequence before entering the main unit box 200. The two-stage filtration structure formed by the first filter mechanism 500 and the second filter mechanism 13 can achieve a good preliminary filtration effect for high-concentration oil fumes, thereby achieving an effective filtration effect for oil fumes entering from the first air inlet 211.

[0068] For example, the first filter mechanism 500 and the second filter mechanism 13 can be filter screens, filter surfaces or other structures that can effectively filter oil fumes, which will not be described in detail in this embodiment.

[0069] In an alternative embodiment, such as Figure 6 and Figure 8As shown, part of the second filter mechanism 13 is located downstream of the second air inlet 810. Since the oil fumes near the wall 3000 are oil fumes that have escaped from the first air inlet 211, the concentration of the escaped oil fumes is significantly lower than that of the oil fumes at the first air inlet 211. Therefore, by setting only one second filter mechanism 13, the effective absorption of the oil fumes escaping from the rear of the first air inlet 211 can be achieved. On the one hand, it can reduce material consumption, and on the other hand, it can reduce the kinetic energy loss of the escaped oil fumes. It can also achieve the rapid capture and absorption of the escaped oil fumes by the hidden range hood 1000, thereby ensuring that the hidden range hood 1000 has a rapid and good absorption effect on the oil fumes.

[0070] In an alternative embodiment, such as Figure 5 and Figure 6 As shown, the second filter mechanism 13 is located upstream of the air inlet (not shown) of the main unit 200. The second connecting mechanism 23 is movably connected to the second filter mechanism 13 and the movable cavity body 21. The second connecting mechanism 23 can guide the oil on the second filter mechanism 13 into the movable cavity body 21, thereby ensuring that the oil at the air inlet of the main unit 200 is finally guided into the movable cavity body 21. This can prevent the leakage of oil inside the hidden range hood 1000, prevent oil from flowing to the outside of the hidden range hood 1000 and the stove, ensure the cleanliness of the kitchen, and ensure that the user always has a better user experience.

[0071] In an alternative embodiment, such as Figure 6 As shown, the second filter mechanism 13 is provided with a first oil drain port 134. The first oil drain port 134 is arranged in the front-to-back direction between the first connecting mechanism 22 and the second connecting mechanism 23. The oil intercepted by the second filter mechanism 13 can drip into the movable cavity 20 through the first oil drain port 134. The oil dripping into the movable cavity 20 will eventually be collected in the oil cup 300 connected to the movable cavity 20, thus preventing the oil from dripping onto the outside of the hidden range hood 1000.

[0072] In an alternative embodiment, such as Figure 6 As shown, the second filter mechanism 13 protrudes downwards, and the first oil drain port 134 is located at the lowest position of the second filter mechanism 13. The oil intercepted by the second filter mechanism 13 can converge at the lowest position and leak into the movable cavity 20 through the first oil drain port 134. The downward protrusion of the second filter mechanism 13 can achieve a better convergence of oil on the second filter mechanism 13, allowing as much oil as possible to smoothly leak out through the first oil drain port 134, avoiding the problem of oil stagnation on the second filter mechanism 13.

[0073] In an alternative embodiment, such as Figure 6As shown, the second filtration mechanism 13 includes a first filter screen 131, a connecting plate 132, and a second filter screen 133 connected sequentially from front to back. The first filter screen 131 is inclined downward from front to back, and the second filter screen 133 is inclined upward from front to back. At least a portion of the first oil drain port 134 is arranged in the connecting area of ​​the first filter screen 131, the connecting plate 132, and the second filter screen 133. The oil on the first filter screen 131 can flow downward from front to back along the first filter screen 131, and the oil on the second filter screen 133 can flow downward from back to front along the second filter screen 133. Through the arrangement of the first filter screen 131 and the second filter screen 133, the oil can be better concentrated towards the first oil drain port 134 located in the middle position.

[0074] In an alternative embodiment, such as Figure 5 As shown, the connecting plate 132 is located below the oil outlet of the volute housing (not shown in the figure) in the main unit box 200 where the fan (not shown in the figure) is installed. The connecting plate 132 can receive the oil dripping from the oil outlet of the volute housing and guide it to the first oil drain 134, so as to prevent the oil outlet of the volute housing from being directly opposite the first filter screen 131 or the second filter screen 133, and prevent the oil from the oil outlet of the volute housing from dripping onto the stove through the first filter screen 131 or the second filter screen 133, thereby further improving the cleanliness of the kitchen environment.

[0075] In an alternative embodiment, such as Figure 6 and Figure 8 As shown, the connecting plate 132 includes a first guide plate 1321 and a second guide plate 1322 arranged in a left-right direction. The first guide plate 1321 is inclined downward from left to right, and the second guide plate 1322 is inclined downward from right to left. At least part of the first oil leak port 134 is arranged at the connection position of the first guide plate 1321 and the second guide plate 1322. The oil on the first guide plate 1321 flows downward from left to right, and the oil on the second guide plate 1322 flows downward from right to left, thereby realizing that the oil on the connecting plate 132 converges and flows towards the first oil leak port 134, so as to achieve better flow of oil towards the first oil leak port 134.

[0076] In an alternative embodiment, such as Figure 6 , Figure 8 and Figure 9As shown, the movable cavity 20 is provided with a second oil drain 216, and the oil cup 300 has a second recovery tank 310. The upper end of the second recovery tank 310 is provided with a second opening 3101. When the movable cavity 20 is in the second position, the first oil drain 134, the second oil drain 216 and the second opening 3101 of the oil cup 300 are arranged sequentially from top to bottom. The oil on the second filter mechanism 13 passes through the first oil drain 134 and the second oil drain 216 in sequence and then enters the oil cup 300 through the second opening 3101. This can effectively shorten the flow path of the oil and realize that the oil on the second filter mechanism 13 can quickly and smoothly pass through the first oil drain 134, the second oil drain 216 and the second opening 3101 of the oil cup 300 in sequence and then enter the oil cup 300 for temporary storage. By positioning the first oil drain port 134, oil can be prevented from flowing from the first oil drain port 134 to the outside of the movable cavity 20, thus preventing oil leakage from the hidden range hood 1000 and ensuring a good level of cleanliness on the outside of the movable cavity 20.

[0077] In an alternative embodiment, such as Figure 8 and Figure 9 As shown, the active cavity body 21 includes an oil collection tank 218 and a base plate 217 with a first air inlet 211. A second oil outlet 216 is disposed on the oil collection tank 218. The base plate 217 is located above the front side of the second oil outlet 216. The base plate 217 is inclined downward from front to back. The base plate 217 can guide the oil on it to the oil collection tank 218, thereby achieving a better oil recovery effect in the oil cup 300. The oil in the oil collection tank 218 can flow into the oil cup 300 through the second oil outlet 216.

[0078] In an alternative embodiment, such as Figure 5 As shown, when the movable cavity 20 is in the first position, the second connecting mechanism 23 is inclined downward from front to back. The oil on the second connecting mechanism 23 is guided to the movable cavity 20 through the inclined surface. The oil eventually flows into the oil cup 300 at the lower rear position of the movable cavity 20 to prevent the oil from dripping onto the table surface.

[0079] In an alternative embodiment, such as Figure 10 and Figure 11 As shown, the second connecting mechanism 23 is provided with a guide groove 232 having an upper opening 2321 and a lower opening 2322. The movable cavity body 21 can receive the oil flowing out from the lower opening 2322. The width of the guide groove 232 gradually decreases from top to bottom in the left-right direction. Through the setting of the guide groove 232, the oil can quickly gather into the lower opening 2322 and flow into the movable cavity body 21, effectively improving the oil collection efficiency.

[0080] In an alternative embodiment, such as Figure 8 and Figure 11As shown, the guide channel 232 is located on the front side of the rear side plate 213 of the active cavity body 21, which can ensure that the oil on the second connecting mechanism 23 completely enters the active cavity body 21, prevent the oil on the second connecting mechanism 23 from flowing to the outside of the active cavity body 21, prevent the oil from falling onto the stove, and ensure the cleanliness of the kitchen environment.

[0081] In an alternative embodiment, such as Figure 8 As shown, the guide groove 232 located on the front side of the second connecting mechanism 23 can effectively guide the oil in the movable cavity 20 into the movable cavity body 21.

[0082] In an alternative embodiment, such as Figure 7 and Figure 8 As shown, a clearance port 241 is provided on the pivot shaft 24. The oil on the second connecting mechanism 23 can enter the movable cavity body 21 after passing through the lower opening 2322 and the clearance port 241 in sequence. The clearance port 241 can avoid the pivot shaft 24 from interfering with the oil and ensure that the oil flowing out from the lower opening 2322 can smoothly enter the movable cavity body 21.

[0083] In summary, through the aforementioned structural design, the various structures work together to achieve a better drainage effect of the oil in the movable cavity 20 into the interior of the movable cavity body 21 and the oil cup 300.

[0084] In an alternative embodiment, such as Figure 11 As shown, the guide channel 232 located on the front side is located on the rear side of the second connecting mechanism 23. The guide channel 232 can better guide the oil in the auxiliary cavity 800 into the active cavity body 21.

[0085] In an alternative embodiment, such as Figure 8 As shown, when the movable cavity 20 is in the second position, at least part of the projection of the second filter mechanism 13 on the horizontal plane is located in the projection of the second opening 3101 on the horizontal plane. That is to say, when the movable cavity 20 is in the second position, the oil cup 300 can also receive some oil inside the auxiliary cavity 800, thereby reducing the leakage of oil inside the hidden range hood 1000 during operation.

[0086] In an alternative embodiment, such as Figure 8 , Figure 9 and Figure 12 As shown, a first recycling tank 123 is provided on the back plate 12, and a first opening 1232 is provided on the upper part of the first recycling tank 123. The oil inside the auxiliary cavity 800 can be collected into the first recycling tank 123 through the first opening 1232 for temporary storage, thereby reducing the leakage of oil inside the hidden range hood 1000 during operation.

[0087] In other alternative embodiments, a structure similar to the first recycling tank 123 can also be formed on the front end plate 11, and the corresponding unknown first recycling tank 123 can also play a good role in temporarily storing oil.

[0088] In an alternative embodiment, such as Figure 8 , Figure 9 and Figure 12 As shown, a third oil drain 1231 is provided on the first recovery tank 123, and an oil cup 300 is provided in the movable cavity 20 and communicates with the interior of the movable cavity 20. When the movable cavity 20 is in the first position, the third oil drain 1231 is connected to the oil cup 300. The oil cup 300 can effectively recover the oil inside the movable cavity 20 and the oil inside the smoke collection chamber body 10. In other words, when the movable cavity 20 is in the first position, the oil cup 300 can simultaneously prevent the oil from flowing out of the movable cavity 20 and the smoke collection chamber body 10, thereby preventing the oil leakage of the hidden smoke machine 1000 when the movable cavity 20 is in the first state.

[0089] When the movable cavity 20 is in the second position, the oil cup 300 is separated from the smoke collection cavity body 10, and the third oil leakage port 1231 is in a blocked state. That is to say, when the movable cavity 20 is in the second position, the oil cup 300 can achieve a better recovery effect of the oil inside the smoke collection cavity body 10, and since the third oil leakage port 1231 is in a blocked state, the oil inside the smoke collection cavity body 10 can also avoid leakage from the third oil leakage port 1231. In other words, the hidden range hood 1000 with the movable cavity 20 in the second position can always prevent oil leakage.

[0090] In summary, the concealed range hood 1000 configuration of this embodiment ensures that the movable cavity 20, regardless of its state, can prevent oil leakage from inside the concealed range hood 1000, and prevent oil from flowing onto the outside of the concealed range hood 1000 and the stovetop, thus ensuring the cleanliness of the kitchen and guaranteeing a consistently good user experience.

[0091] In an alternative embodiment, such as Figure 8 , Figure 9 and Figure 12As shown, the smoke collection mechanism 100 of this embodiment further includes a sealing mechanism 400. A third oil drain 1231 is provided on the bottom plate of the first tank of the first recovery tank 123. The oil temporarily stored inside the first recovery tank 123 can flow into the oil cup 300 through the third oil drain 1231. The sealing mechanism 400 is disposed on the smoke collection chamber body 10. When the movable chamber 20 is in the first position, the sealing mechanism 400 is used to open the third oil drain 1231; when the movable chamber 20 is in the second position, the sealing mechanism 400... The 0 is used to seal the third oil leak 1231. By switching the movable cavity 20 between the first and second positions, the sealing mechanism 400 can adaptably open or seal the third oil leak 1231, achieving a quick and precise match between the state of the third oil leak 1231 and the corresponding movable cavity 20. This can effectively prevent the leakage of oil inside the hidden range hood 1000, prevent oil from flowing to the outside of the hidden range hood 1000 and the stove, ensure the cleanliness of the kitchen, and ensure that users always have a better user experience.

[0092] In an alternative embodiment, such as Figure 12 As shown, the sealing mechanism 400 includes a first mounting part 410, a reset part 420, and a movable part 430. The first mounting part 410 is disposed on the smoke collection chamber body 10. The first mounting part 410 is connected to the movable part 430 through the reset part 420. The oil cup 300 includes a trigger part 320. When the movable chamber 20 is in the first position, the trigger part 320 cooperates with the movable part 430 to open the third oil leakage port 1231. The cooperation between the trigger part 320 and the movable part 430 can achieve the precise opening effect of the third oil leakage port 1231 when the movable chamber 20 is in the first position. No additional position detection device for the movable chamber 20 is required, which makes the structure of the sealing mechanism 400 simpler. Furthermore, the triggering part 320 can only trigger the movable part 430 to change its state when the movable cavity 20 is actually in the first position. This can effectively prevent the movable part 430 from being accidentally triggered, prevent the third oil leak port 1231 from being accidentally opened, and ensure that the hidden range hood 1000 will not leak oil.

[0093] In an alternative embodiment, such as Figure 12 As shown, the movable part 430 includes a plug-in part 432, which can be a long rod-shaped structure. The long rod-shaped plug-in part 432 can be well plugged into the third oil leak port 1231, thereby achieving a good sealing effect of the movable part 430 on the third oil leak port 1231.

[0094] In other alternative embodiments, the movable element 430 may also be a sealing plate (not shown in the figure). The sealing plate can move or rotate horizontally relative to the smoke collection chamber body 10. By moving or rotating the sealing plate horizontally, a better switching effect of sealing or opening the third oil leakage port 1231 can also be achieved.

[0095] In an alternative embodiment, such as Figure 9 and Figure 12 As shown, when the movable cavity 20 is in the second position, the reset member 420 is used to reset the movable member 430 so that the movable member 430 can block the third oil leak 1231. The reset member 420 enables the movable member 430 to be quickly reset, thereby achieving the effect of quickly blocking the third oil leak 1231.

[0096] For example, the reset component 420 can be a spring, a reset cylinder, a spring sheet, etc. All structures that can achieve the reset of the movable component 430 are within the protection scope of this optional embodiment, which will not be described in detail here.

[0097] In an alternative embodiment, such as Figure 12 As shown, the movable part 430 includes a guide part 431. The first mounting part 410 is provided with a guide groove 411. The guide part 431 is inserted into the guide groove 411 and can slide along the guide groove 411. The reset part 420 is disposed in the guide groove 411 and is held by the second groove bottom plate of the guide groove 411 and the guide part 431. By sliding the guide part 431 in the guide groove 411, the guide part 431 can always apply a good force to the reset part 420 along the extension direction of the guide groove 411, which can prevent the sliding of the guide part 431 from deviating and ensure that the reset part 420 always has a good predetermined deformation effect.

[0098] In an alternative embodiment, such as Figure 12 As shown, the movable member 430 may further include a limiting part 433, which can cooperate with the first mounting member 410 to limit the upper limit position of the guide part 431, so as to avoid damage to the reset member 420 caused by excessive pressure from the guide part 431. The limiting part 433 can cooperate with the smoke collection chamber body 10 to limit the lower limit position of the movable member 430, so as to avoid damage to the movable member 430 caused by excessive downward movement.

[0099] In summary, through the cooperation of the above structures, a good effect can be achieved in guiding the oil inside the movable cavity 20 and the auxiliary cavity 800 to the oil cup 300, and the oil cup 300 can achieve a good recovery effect of the oil inside the movable cavity 20 and the auxiliary cavity 800, preventing the oil inside the hidden range hood 1000 from dripping outwards, and ensuring a clean environment inside the kitchen.

[0100] Example 2 like Figures 15-17 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, with the main difference being: Figures 15-17As shown, the structure of the movable cavity 20 is different. The movable cavity 20 in this embodiment includes a frame 25 and a movable cavity body 21 with a first air inlet 211. The frame 25 can move in the vertical direction relative to the smoke collection cavity body 10, and the movable cavity body 21 can move in the front-back direction relative to the frame 25. Through this structure, the size of the second air inlet 810 and the extent to which the movable cavity 20 extends out of the smoke collection cavity body 10 can be dynamically linked, so that the size of the second air inlet 810 and the extent to which the movable cavity 20 extends out of the smoke collection cavity body 10 increase with the increase of the oil fume concentration. This achieves dynamic balance and adjustment of the working state of the hidden range hood 1000 with the oil fume concentration, so as to achieve a good absorption effect of the hidden range hood 1000 for oil fumes in different states and ensure that the kitchen is always clean.

[0101] For example, the smoke collection mechanism 100 includes a drive mechanism 60, which can realize the movement of the frame 25 in the vertical direction. The drive mechanism 60 can be a linear drive mechanism, such as a linear motor, a linear cylinder, a lead screw and nut mechanism, etc.

[0102] For example, the movable cavity body 21 can be connected to the frame 25 through a linear guide rail structure (not shown in the figure). Through the setting of the linear guide rail structure, the movable cavity body 21 can move forward or backward.

[0103] In an optional embodiment, the frame 25 is provided with an opening (not shown in the figure), and a filter screen can be covered on the opening. By providing the filter screen, the filtering effect of the movable cavity 20 on oil fumes can be further improved.

[0104] Furthermore, the frame 25 and movable cavity 20 of the concealed range hood 1000 in this embodiment can be controlled independently. The movement of the frame 25 and movable cavity 20 can be combined to create different positions of the movable cavity 20 relative to the smoke collection chamber body 10, thereby enabling the concealed range hood 1000 to correspond to different states of oil fumes, thus ensuring that the concealed range hood 1000 can absorb oil fumes in different states effectively.

[0105] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An oil fume treatment device, characterized in that, Includes a smoke collection mechanism (100), said smoke collection mechanism (100) comprising: The smoke collection chamber body (10) includes a back plate (12); and The movable cavity (20) includes a first air inlet (211) and has a first position that is housed in the smoke collection cavity body (10) and a second position that extends out of the smoke collection cavity body (10). When the movable cavity (20) is in the second position, the movable cavity (20) and the back plate (12) form a second air inlet (810), and the second air inlet (810) is located behind the first air inlet (211).

2. The fume treatment device according to claim 1, characterized in that, The size of the second air inlet (810) and / or the extent to which the movable cavity (20) extends out of the smoke collection cavity body (10) increases with the increase of the oil fume concentration.

3. The oil fume treatment device according to claim 2, characterized in that, During the process of the movable cavity (20) switching from the first position to the second position, the space inside the movable cavity (20) gradually increases; or The movable cavity (20) includes a frame (25) and a movable cavity body (21) having the first air inlet (211). The frame (25) can move in the vertical direction relative to the smoke collection cavity body (10), and the movable cavity body (21) can move in the front-back direction relative to the frame (25).

4. The oil fume treatment device according to claim 3, characterized in that, The smoke collection mechanism (100) also includes: A first filter element (500) is disposed at the first air inlet (211); and When the active cavity (20) is in the second position, part of the second filter mechanism (13) is located downstream of the first air inlet (211), and part of the second filter mechanism (13) is located downstream of the second air inlet (810).

5. The fume treatment device according to claim 4, characterized in that, The smoke collection mechanism (100) further includes a drive mechanism (60). The movable cavity (20) includes a movable cavity body (21), a first connecting mechanism (22), and a second connecting mechanism (23). The second connecting mechanism (23) is located behind the first connecting mechanism (22). The upper ends of the first connecting mechanism (22) and the upper ends of the second connecting mechanism (23) are movably connected to the smoke collection cavity body (10). The lower ends of the first connecting mechanism (22) and the lower ends of the second connecting mechanism (23) are movably connected to the movable cavity body (21). The movable cavity (20) is movably connected to the drive mechanism (60).

6. The fume treatment device according to claim 5, characterized in that, The second connecting mechanism (23) is movably connected to the second filtering mechanism (13), and the second connecting mechanism (23) can guide the oil on the second filtering mechanism (13) into the active cavity body (21).

7. The fume treatment device according to claim 6, characterized in that, The second filter mechanism (13) is provided with a first oil leak port (134), which is located between the first connecting mechanism (22) and the second connecting mechanism (23) in the front-back direction.

8. The fume treatment device according to claim 7, characterized in that, The second filter mechanism (13) is arranged to protrude downwards, and the first oil leak (134) is located at the lowest position of the second filter mechanism (13).

9. The fume treatment device according to claim 8, characterized in that, The second filtration mechanism (13) includes a first filter screen (131), a connecting plate (132), and a second filter screen (133) connected sequentially from front to back. The first filter screen (131) is inclined downward from front to back, and the second filter screen (133) is inclined upward from front to back. At least part of the first oil leak (134) is arranged in the connecting area of ​​the first filter screen (131), the connecting plate (132), and the second filter screen (133).

10. The fume treatment device according to claim 9, characterized in that, The connecting plate (132) includes a first guide plate (1321) and a second guide plate (1322) arranged in the left-right direction. The first guide plate (1321) is inclined downward from left to right, and the second guide plate (1322) is inclined downward from right to left. At least part of the first oil leak (134) is arranged at the connection position of the first guide plate (1321) and the second guide plate (1322).

11. The fume treatment device according to claim 7, characterized in that, The movable cavity (20) is provided with a second oil drain port (216). When the movable cavity (20) is in the second position, the first oil drain port (134), the second oil drain port (216) and the second opening (3101) of the oil cup (300) are arranged from top to bottom. The oil on the second filter mechanism (13) passes through the first oil drain port (134) and the second oil drain port (216) in sequence and then enters the oil cup (300) through the second opening (3101).

12. The fume treatment device according to claim 11, characterized in that, When the active cavity (20) is in the second position, at least a portion of the projection of the second filter mechanism (13) onto the horizontal plane lies within the projection of the second opening (3101) onto the horizontal plane; and / or The second connecting mechanism (23) is provided with a guide groove (232) having an upper opening (2321) and a lower opening (2322). The movable cavity body (21) can receive oil flowing out from the lower opening (2322), and the width of the guide groove (232) gradually decreases from top to bottom in the left-right direction; and / or The guide channel (232) is located on the front side of the rear side plate (213) of the active cavity body (21); and / or The guide groove (232) is located on the front or rear side of the second connecting mechanism (23).

13. The fume treatment device according to any one of claims 1 to 12, characterized in that, The back plate (12) is provided with a first recycling tank (123), which is used to recycle the oil entering the fume from the second air inlet (810).

14. The fume treatment device according to claim 13, characterized in that, The smoke collection mechanism (100) also includes an oil cup (300). A third oil drain (1231) is provided on the first recovery tank (123). The oil cup (300) is located in the movable cavity (20) and communicates with the interior of the movable cavity (20). When the movable cavity (20) is in the first position, the third oil drain (1231) is connected to the oil cup (300). When the movable cavity (20) is in the second position, the oil cup (300) is separated from the smoke collection cavity body (10), and the third oil drain (1231) is in a blocked state.

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