An oil fume treatment device

Abstract

This invention relates to the field of kitchen appliance technology, and more particularly to an oil fume treatment device. The oil fume treatment device includes a fume collection mechanism, which comprises a main air inlet, a main air outlet, and at least two layers of filters. The at least two layers of filters are arranged at intervals along a vertical direction. The number of filter layers that the oil fumes flowing from the main air inlet to the main air outlet pass through decreases from front to back. Furthermore, the number of filter layers stacked vertically also decreases from front to back. High-concentration oil fumes near the front and lower areas of the cookware can enter the main unit after being filtered by multiple layers of filters. The multiple layers of filters achieve a better filtration effect for high-concentration oil fumes, ensuring sufficient filtration while avoiding excessive suction loss and a significant increase in energy consumption. This achieves synergistic optimization of oil fume filtration effect, energy loss, suction loss, and airflow efficiency.

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] Traditional smoke collection mechanisms typically use a single air inlet and have a filter inside. During actual cooking, the oil fumes exhibit a significant gradient distribution in space: the concentration of oil fumes is highest in the area in front of and below the cookware, and gradually decreases in the concentration of oil fumes in the area further away from the cookware, behind and above it.

[0004] If multiple layers of filters are installed from top to bottom, although they can effectively filter the high-concentration fumes in the area in front of and below the cookware, there is a problem of over-filtration for the low-concentration fumes in the area behind and above the cookware. This leads to an unnecessary increase in the wind resistance of the fume treatment device, resulting in a significant increase in the suction power loss and energy consumption of the fume treatment device. If fewer filters are installed, the high-concentration fumes in the area in front of and below the cookware will not be effectively filtered. Summary of the Invention

[0005] The purpose of this invention is to provide an oil fume treatment device that achieves synergistic optimization of oil fume filtration effect, energy consumption, suction power loss and air circulation efficiency.

[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: Main air inlet and main air outlet; At least two layers of filters are arranged at intervals along the vertical direction, and the number of layers of filters that the fumes flowing from the main air inlet to the main air outlet pass through decreases from front to back.

[0007] As an alternative, at least two layers of the filter elements constitute at least two filtration zones arranged from front to back, and the number of filter elements included in the at least two filtration zones gradually decreases from front to back.

[0008] As an alternative, the projection of any filter element on the horizontal plane does not completely coincide with the projections of all the filter elements below it on the horizontal plane, and any filter element extends behind its adjacent lower layer filter element. The oil fumes of the corresponding filter area flow through the bottommost filter element of the corresponding filter area and all other filter elements above the bottommost filter element.

[0009] As an optional solution, the smoke collection mechanism includes at least two smoke collection chambers, each including the filter element and a smoke collection chamber body with an air inlet, the filter element being disposed at the air inlet; when the smoke collection mechanism is in operation, at least two smoke collection chamber bodies are arranged vertically, and adjacent smoke collection chambers are connected through the filter element of the adjacent upper smoke collection chamber; or The smoke collection mechanism includes a smoke collection hood, on which the main air inlet and the main air outlet are provided, and at least two layers of the filter elements are disposed inside the smoke collection hood.

[0010] As an optional solution, the filter element includes a first filter screen and a second filter screen arranged from front to back. The first filter screen is inclined downward from front to back, and the second filter screen is inclined downward from back to front. An oil leakage port is provided at the connection position of the first filter screen and the second filter screen. The oil leakage port of the adjacent upper smoke collection chamber is connected to the interior of the adjacent lower smoke collection chamber.

[0011] As an optional solution, the filter element further includes: The first connecting member, the first filter screen, the first connecting member and the second filter screen are connected in sequence. The first connecting member includes a first connecting plate and a second connecting plate arranged from left to right. The first connecting plate is inclined downward from left to right, and the second connecting plate is inclined downward from right to left. The oil leak is located at the connection position of the first filter screen, the first connecting member and the second filter screen.

[0012] As an optional solution, the smoke collection chamber also includes a sealing component and an oil fume property information detection mechanism. The filter element is equipped with a corresponding oil fume property information detection mechanism, which can acquire oil fume property information. The sealing component can adjust the sealing state of the filter element according to the oil fume property information.

[0013] As an optional solution, when the smoke gathering mechanism switches from the working state to the off state, each smoke gathering chamber switches from the unfolded mode to the retracted mode, and the internal volume of the smoke gathering chamber in the unfolded mode is larger than the internal volume of the smoke gathering chamber in the retracted mode.

[0014] As an optional solution, the smoke collection chamber includes a fixed cover and a deformable cover; wherein: When the smoke collection chamber is in the deployed mode, at least a portion of the deformable cover simultaneously extends forward and downward from the fixed cover; and / or When the smoke-collecting chamber is in the retracted mode, the fixed cover and the deformable cover are nested together; and / or When the smoke collection chamber is in the closing mode, two adjacent smoke collection chambers are nested together.

[0015] As an optional solution, two adjacent smoke collection chambers are connected by a drive mechanism. The fume treatment device also includes a drive device that can drive any one of the smoke collection chambers to switch between the unfolded mode and the retracted mode, so that the remaining smoke collection chambers can switch between the unfolded mode and the retracted mode simultaneously.

[0016] As an optional solution, the driving device is a linear drive mechanism, and the smoke-collecting mechanism includes: The first smoke collection chamber includes a first fixed cover and a first deformable cover. The first deformable cover is movably connected to the first fixed cover. One end of the linear drive mechanism is directly or indirectly movably connected to the first fixed cover, and the other end of the linear drive mechanism is movably connected to the first deformable cover. The second smoke-collecting chamber and the connecting rod assembly, the second smoke-collecting chamber includes a second fixed cover and a second deformable cover, the second fixed cover is movably connected to the first deformable cover, the second deformable cover is movably connected to the second fixed cover, one end of the connecting rod assembly is movably connected to the first deformable cover, and the other end of the connecting rod assembly is movably connected to the second deformable cover.

[0017] As an optional solution, the fume treatment device further includes: The oil cup is always connected to one of the smoke collection chambers. When the smoke collection mechanism is in the off state, the other smoke collection chambers are also connected to the oil cup.

[0018] The beneficial effects of this invention are: The oil fume treatment device provided by this invention includes a smoke collection mechanism, which includes a main air inlet, a main air outlet, and at least two layers of filters. The at least two layers of filters are arranged at intervals in the vertical direction. The number of filter layers that the oil fumes flowing from the main air inlet to the main air outlet pass through decreases from front to back. From front to back, the number of filter layers stacked in the vertical direction also decreases. High-concentration oil fumes in the area in front of and below the cookware can enter the main unit after being filtered by more layers of filters. The more layers of filters can achieve a better filtration effect for high-concentration oil fumes. In addition, low-concentration oil fumes in the area behind and above the cookware are filtered by a relatively fewer layers of filters. This ensures sufficient filtration effect while avoiding excessive loss of suction power and a significant increase in energy consumption.

[0019] Through the design of the aforementioned smoke collection mechanism, multiple functions are unified, including "serial deep purification from bottom to top" and "parallel escape capture from front to back". This smoke collection mechanism can be well matched with the gradient distribution of oil fumes generated during actual cooking, which is "heavy in front and light in back, heavy at the bottom and light at the top". It achieves a precise configuration of "heavy filtration of high-concentration oil fumes in the area in front of and below the pot, and light filtration of low-concentration oil fumes in the area behind and above the pot". This smoke collection mechanism can ensure good absorption of oil fumes in each area while coordinating the overall suction loss and energy consumption of the oil fume treatment device. The oil fume treatment device achieves synergistic optimization of oil fume filtration effect, energy loss, suction loss and air circulation efficiency. Attached Figure Description

[0020] Figure 1 This is a first structural schematic diagram of the concealed range hood and cabinet provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the second structure of the concealed range hood and cabinet provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the smoke collection mechanism provided in Embodiment 1 of the present invention when it is in the off state; Figure 4 This is a schematic diagram of the structure of the filter element with the first arrangement provided in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the structure of the filter element with the second arrangement provided in Embodiment 1 of the present invention; Figure 6 This is a cross-sectional view of the smoke collection mechanism provided in Embodiment 1 of the present invention when it is in the off state; Figure 7 This is a cross-sectional view of the smoke collection mechanism provided in Embodiment 1 of the present invention in its working state; Figure 8 This is a schematic diagram of the smoke collection mechanism, cookware, and stove in working condition provided in Embodiment 1 of the present invention; Figure 9 This is a cross-sectional view of the smoke collection mechanism provided in Embodiment 2 of the present invention when it is in the off state; Figure 10 yes Figure 9 A magnified view of a section at point D; Figure 11 This is a first partial enlarged view of the concealed range hood provided in Embodiment 2 of the present invention; Figure 12 This is a second partial enlarged view of the concealed range hood provided in Embodiment 2 of the present invention; Figure 13 This is a first sectional view of the smoke-collecting mechanism provided in Embodiment 3 of the present invention when it is in working state; Figure 14 This is a second sectional view of the smoke-collecting mechanism provided in Embodiment 3 of the present invention when it is in working state; Figure 15 This is a schematic diagram of the working principle of the concealed smoke hood provided in Embodiment 3 of the present invention; Figure 16 This is a schematic diagram of the concealed smoke hood provided in Embodiment 4 of the present invention.

[0021] In the picture: 1000, Concealed range hood; 2000, Cabinet; 2100, Installation cavity; 3000, Cookware; 4000, Stovetop; 100. Smoke collection mechanism; 200. Main unit housing; 210. Main unit housing shell; 2110. Third air inlet; 220. Fifth filter element; 2210. Third filter screen; 22110. Fourth filter screen hole; 2220. Fourth filter screen; 22210. Fifth filter screen hole; 2230. Second connecting piece; 22310. Third connecting plate; 22320. Fourth connecting plate; 2240. Oil outlet; 230. Fan; 300. Oil cup; 3100. Opening; 3200. Trigger; 400. Drive device; 10. First smoke collection chamber; 11. First smoke collection chamber body; 111. First fixed cover; 1111. First temporary oil storage area; 11111. First oil outlet; 112. First deformable cover; 1121. First front connecting plate; 1122. First rear connecting plate; 1123. First air inlet; 113. First auxiliary smoke collection chamber; 1131. First auxiliary air inlet; 12. First filter element; 121. First filter screen; 1211. First... Filter mesh; 122, Second filter mesh; 1221, Second filter mesh; 123, First connecting piece; 1231, First connecting plate; 1232, Second connecting plate; 124, Oil leak port; 13, First sealing mechanism; 131, First mounting piece; 1311, First guide groove; 132, First reset piece; 133, First movable piece; 1331, First guide part; 1332, First insertion part; 1333, First limiting part; 20. Second smoke collection chamber; 21. Second smoke collection chamber body; 211. Second fixed cover; 2111. Second temporary oil storage area; 21111. Second oil outlet; 212. Second deformable cover; 2121. Second deformable cover body; 21211. Second front connecting plate; 21212. Second rear connecting plate; 21213. Smoke collection chamber body; 212131. Second air inlet; 212132. Third oil outlet; 2122. Extension; 213. Second auxiliary smoke collection chamber; 2131. Second auxiliary air inlet; 22. Second filter element; 221. Third filter mesh; 23. Second sealing mechanism; 231. Second mounting element; 2311. Second guide groove; 232. Second reset element; 233. Second movable element; 2331. Second guide part; 2332. Second insertion part; 2333. Second limiting part; 30. Linkage assembly; 40. Flip-board; 50. Sealing assembly; 51. First sealing element; 52. First driving element; 53. Second sealing element; 54. Second driving element; 60. Oil fume physical property testing components; 61. First oil fume physical property testing institution; 62. Second oil fume physical property testing institution; 70. Control mechanism; 80. Smoke hood; 81. Main air inlet; 82. Main air outlet; 90. Sixth filter element; 91. Third filter element; 92. Fourth filter element. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] Example 1 like Figures 1-3 As 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 second air inlet 212131. The main unit 200 can generate negative pressure, which allows the oil fumes outside the oil fume treatment device to pass sequentially through the second air inlet 212131, the interior of the smoke collection mechanism 100, and the main unit 200. The gas, after being filtered through multiple layers, 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.

[0027] In an alternative embodiment, such as Figure 1 As shown, when the smoke collection mechanism 100 is in the off state, the main unit 200 and the smoke collection mechanism 100 are completely housed in the mounting cavity 2100 of the cabinet 2000. The cabinet 2000 can achieve a good hiding effect for the main unit 200 and the smoke collection mechanism 100, which can prevent the main unit 200 and the smoke collection mechanism 100 from being exposed in the kitchen environment and ensure the aesthetics of the kitchen environment.

[0028] like Figure 2As shown, when the smoke collection mechanism 100 is in working condition, at least part of the smoke collection mechanism 100 extends outside the mounting cavity 2100 of the cabinet 2000, and the second air inlet 212131 can get 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.

[0029] 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.

[0030] In an alternative embodiment, such as Figures 1-3 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 collected from the main unit 200 and the smoke collection mechanism 100, thus preventing the oil inside the concealed range hood 1000 from dripping onto the cooktop 4000 (e.g., Figure 8 As shown in the figure, this ensures that the stovetop is always kept at a good level of cleanliness.

[0031] In an alternative embodiment, such as Figures 1-3 As shown, the smoke collection mechanism 100 also includes a flap 40, which can, as Figure 1 The recovery state shown and as Figure 2 The diagram shows the switching between the extended and unfolded states. (Example) Figure 1 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 mechanism 100 from being exposed in the kitchen environment, thus ensuring the aesthetics of the kitchen environment. Figure 2 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.

[0032] Traditional smoke collection mechanisms 100 typically employ a single air inlet, and the smoke collection mechanism 100 contains a filter screen, such as... Figure 8As shown, during actual cooking, due to thermal buoyancy, cooking fumes naturally form a significant spatial gradient distribution: the concentration of cooking fumes is highest in the area in front of and below the cookware 3000, and gradually decreases in concentration in the area behind and above the cookware 3000 as the fumes diffuse. For example, the concentration of cooking fumes in area A is higher than that in area B, and the concentration of cooking fumes in area B is higher than that in area C.

[0033] If multiple layers of filters are installed from top to bottom, although they can effectively filter the high-concentration oil fumes in front of and below the cookware 3000, there is an over-filtration problem for the low-concentration oil fumes in the rear and above the cookware 3000. This results in an unnecessary increase in the wind resistance of the hidden range hood 1000, leading to a significant increase in the suction power loss and energy consumption of the hidden range hood 1000. If fewer filters are installed, the high-concentration oil fumes in front of and below the cookware 3000 will not be effectively filtered.

[0034] To solve the above problems, such as Figure 4 and Figure 5 As shown, the concealed range hood 1000 of this embodiment includes a smoke collection mechanism 100, which includes a main air inlet 81, a main air outlet 82, and at least two layers of filters. The at least two layers of filters are arranged at intervals in the vertical direction. The number of filter layers that the fumes flowing from the main air inlet 81 to the main air outlet 82 pass through decreases from front to back. From front to back, the number of filter layers stacked in the vertical direction also decreases. High-concentration fumes in the area in front of and below the cookware 3000 can enter the main unit box 200 after being filtered by more layers of filters. The more layers of filters can achieve a better filtration effect for high-concentration fumes. In addition, low-concentration fumes in the area behind and above the cookware 3000 are filtered by a relatively fewer layers of filters. This ensures sufficient filtration effect while avoiding excessive loss of suction power and a significant increase in energy consumption.

[0035] In summary, as Figure 4 and Figure 5As shown, through the design of the aforementioned smoke collection mechanism 100, the multiple functions of "serial deep purification from bottom to top" and "parallel escape capture from front to back" are unified. The smoke collection mechanism 100 can be well matched with the gradient distribution of oil fumes generated by actual cooking in the form of "heavy in front and light in back, heavy at the bottom and light at the top". It achieves a precise configuration of "heavy filtration of high-concentration oil fumes in front of and below the cookware 3000, and light filtration of low-concentration oil fumes in the rear and above the cookware 3000". The smoke collection mechanism 100 can ensure good absorption of oil fumes in each area, while also coordinating the overall suction loss and energy consumption of the hidden range hood 1000. The hidden range hood 1000 achieves synergistic optimization of oil fume filtration effect, energy loss, suction loss and air circulation efficiency.

[0036] like Figure 4 , Figure 5 as well as Figure 7 As shown, at least two filter elements constitute at least two filtration zones arranged from front to back. The number of filter elements included in the at least two filtration zones gradually decreases from front to back. By arranging at least two filter elements in this way, the effect of gradually decreasing the number of filter elements stacked in the vertical direction can be achieved.

[0037] For example, such as Figure 4 and Figure 5 As shown, the filter elements are configured with four layers. The smoke collection mechanism 100 includes a first filter element 12, a second filter element 22, a third filter element 91, and a fourth filter element 92. The second filter element 22, the first filter element 12, the third filter element 91, and the fourth filter element 92 are arranged from bottom to top. The oil fume area is divided into a first filtration area I, a second filtration area II, a third filtration area III, and a fourth filtration area IV from front to back. Among them, the bottom layer filter element corresponding to the first oil passage S1 in the first filtration area I is the second filter element 22, the bottom layer filter element corresponding to the second oil passage S2 in the second filtration area II is the first filter element 12, and the third filtration area I... The bottom layer filter element for the third oil passage S3 corresponding to II is the third filter element 91, and the bottom layer filter element for the fourth oil passage S4 corresponding to the fourth filtration area IV is the fourth filter element 92. That is to say, the first oil passage S1 flows through four layers of filters in sequence, namely the second filter element 22, the first filter element 12, the third filter element 91, and the fourth filter element 92; the second oil passage S2 flows through three layers of filters in sequence, namely the first filter element 12, the third filter element 91, and the fourth filter element 92; the third oil passage S3 flows through two layers of filters in sequence, namely the third filter element 91 and the fourth filter element 92; and the fourth oil passage S4 flows through only one layer of filters, namely the fourth filter element 92.

[0038] In an optional embodiment, the number of filter elements can be two, three, five, or more layers. All structures that can form filter elements with a gradually decreasing number of layers stacked in the vertical direction are within the protection scope of this optional embodiment.

[0039] In an alternative embodiment, such as Figure 4 and Figure 5 As shown, the projection of any filter element on the horizontal plane does not completely overlap with the projections of all the filter elements below it on the horizontal plane. Any filter element extends behind its adjacent lower filter element. The oil fumes in the corresponding filtration area flow through the bottommost filter element of the corresponding filtration area and all other filter elements above the bottommost filter element. Through this simple structural arrangement, the effect of gradually decreasing number of filter elements stacked in the vertical direction can be achieved.

[0040] It should be noted that, as Figure 4 and Figure 5 As shown, the front ends of the first filter element 12, the second filter element 22, the third filter element 91, and the fourth filter element 92 can be completely flush, partially flush, or not flush at all. By adjusting the front end position, rear end position, and length of each filter element, as long as the shape of at least two filter elements with a gradually decreasing number of layers stacked in the vertical direction can be guaranteed, it is within the protection scope of this optional embodiment, and this application will not elaborate further.

[0041] In an alternative embodiment, such as Figure 7 and Figure 8 As shown, the smoke collection mechanism 100 includes at least two smoke collection chambers. Each smoke collection chamber includes a filter element and a smoke collection chamber body with an air inlet. The filter element is disposed at the air inlet. When the smoke collection mechanism 100 is in operation, the at least two smoke collection chamber bodies are arranged from bottom to top. Adjacent smoke collection chambers are connected through the filter element of the adjacent upper smoke collection chamber. Due to the separate smoke collection chambers, the oil fumes in the adjacent lower smoke collection chambers only pass through the part connected to the adjacent upper filter element during their continued movement. In other words, the oil fumes in the adjacent lower smoke collection chambers will not diffuse to the rear protruding part of the adjacent upper filter element, thereby avoiding an increase in the oil fume concentration of low-concentration oil fumes in the rear and upper areas, and ensuring that the low-concentration oil fumes in the rear and upper areas can meet the required filtration effect by passing through relatively few filter elements.

[0042] In addition, such as Figure 8 and Figure 9As shown, from front to back, the position of the air inlet at the bottom gradually rises. This means that the front section of the smoke-collecting mechanism 100 has a greater depth, a lower air inlet, and more filter layers. The greater depth allows the front section of the smoke-collecting mechanism 100 to have more space to accommodate more cooking fumes, creating a stronger negative pressure zone above the cookware 3000 on the stovetop 4000. Like an invisible hand, it firmly "grabs" the rising, high-concentration cooking fumes. Furthermore, a shallow cavity design might cause cooking fumes to bounce and escape after hitting the range hood, while the greater depth effectively "swallows" the fumes, preventing them from escaping. In addition, the lower air inlet allows the negative pressure zone to be closer to the cookware 3000, shortening the path of the fumes from generation to absorption. This effectively shortens the movement path of the high-concentration cooking fumes at the front, allowing them to be quickly absorbed before they spread.

[0043] In summary, by increasing the depth of the front side and reducing the height of the air inlet, the fumes are firmly locked in the fume collection mechanism 100 the moment they are generated, preventing the fumes from rising, spreading, and escaping. This extends the residence time of the fumes in the fume collection mechanism 100, preventing them from passing through and creating a crucial time window for the subsequent multi-layer filter elements to fully intercept them.

[0044] Furthermore, once the fumes are firmly captured by the deep cavity, the multiple layers of filters can fully filter the high-concentration fumes, ensuring that the gas entering the fan 230 is cleaner. The blades of the fan 230 are less prone to oil accumulation, the performance of the fan 230 deteriorates more slowly, and a strong negative pressure is maintained for a long time, which further enhances the smoke-gathering effect of the deep cavity. When the deep cavity is combined with the multiple layers of filters, a positive cycle is formed, realizing the rapid and efficient absorption and filtration effect of the smoke-gathering mechanism 100 on the high-concentration fumes at the front.

[0045] In an alternative embodiment, such as Figure 7 and Figure 8As shown, the smoke collection mechanism 100 includes a first smoke collection chamber 10 and a second smoke collection chamber 20 arranged from top to bottom. The first smoke collection chamber 10 includes a first smoke collection chamber body 11 with a first air inlet 1123 and a first filter element 12, which is disposed at the first air inlet 1123. The second smoke collection chamber 20 includes a second smoke collection chamber body 21 with a second air inlet 212131 and a second filter element 22, which is disposed at the second air inlet 212131. The main unit housing 200 includes a main unit housing 210 and a fifth filter element 220. A third air inlet 2110 is provided on the main unit housing 210, and the fifth filter element 220 is disposed at the third air inlet 2110. When the smoke collection mechanism 100 is in working condition, the second smoke collection chamber body 21, the first smoke collection chamber body 11, and the main unit housing 210 are arranged from bottom to top. The first smoke collection chamber 10 and the second smoke collection chamber 20 are connected by the first filter element 12. The first smoke collection chamber 10 and the main unit housing 210 are connected by the fifth filter element 220. The rear part of the first filter element 12 is located behind the second smoke collection chamber 20, and the rear part of the fifth filter element 220 is located behind the first smoke collection chamber 10. The high-concentration oil fumes in the front and lower A area pass through the second filter element 22, the first filter element 12, and the fifth filter element 220 in sequence. The high-concentration oil fumes in the A area can be filtered by the three-stage filter element. The medium-concentration oil fumes in the middle B area pass through the first filter element 12 and the fifth filter element 220. The medium-concentration oil fumes in the B area can be filtered by the two-stage filter element. The low-concentration oil fumes in the rear and upper C area only pass through the fifth filter element 220. The low-concentration oil fumes in the C area only pass through the first-stage filter element.

[0046] It should be noted that the number of smoke collection chambers can also be three, four, five or more. This disclosure embodiment only describes the structure of the hidden smoke machine 1000 with two smoke collection chambers. The number of smoke collection chambers in this disclosure embodiment is not specifically limited, and all numbers of smoke collection chambers are within the protection scope of this optional embodiment.

[0047] In an alternative embodiment, such as Figure 7 and Figure 8As shown, the first filter element 12 includes a first filter screen 121 and a second filter screen 122 arranged from front to back, and the fifth filter element 220 includes a third filter screen 2210 and a fourth filter screen 2220. The first filter screen 121 is connected to the second smoke collection chamber 20, the second filter screen 122 is located on the rear side of the second smoke collection chamber 20, the third filter screen 2210 is connected to the first smoke collection chamber 10, and the fourth filter screen 2220 is located on the rear side of the first smoke collection chamber 10. Through the corresponding structural settings and arrangement of each filter element, the second filter element 22, the second filter screen 122, and the fourth filter screen 2220, which are directly connected to the external space of the smoke collection mechanism 100, can be arranged in a stepped manner from front to back and from bottom to top, thereby achieving a good match with the gradient distribution of oil fumes generated by actual cooking, which is "heavy in the front and light in the back, heavy at the bottom and light at the top".

[0048] For example, such as Figures 6-8 As shown, the first filter screen 121 has a plurality of first filter screen holes 1211, the second filter screen 122 has a plurality of second filter screen holes 1221, the second filter element 22 has a plurality of third filter screen holes 221, the third filter screen 2210 has a plurality of fourth filter screen holes 22110, and the fourth filter screen 2220 has a plurality of fifth filter screen holes 22210.

[0049] In an alternative embodiment, such as Figure 7 and Figure 8 As shown, the first filter screen 121 is inclined downward from front to back, and the second filter screen 122 is inclined downward from back to front. An oil drain port 124 is provided at the junction of the first filter screen 121 and the second filter screen 122. The oil drain port 124 of the first filter element 12 of the first smoke collection chamber 10 is connected to the interior of the second smoke collection chamber 20. The oil intercepted by the first filter element 12 can gather at the lowest position of the first filter element 12 and flow into the second smoke collection chamber 20 through the oil drain port 124, which can prevent the oil on the first filter element 12 from dripping onto the stove 4000.

[0050] In addition, the arrangement of the first filter screen 121 and the second filter screen 122 can achieve a better collection effect of oil on the first filter element 12, that is, the oil on the first filter element 12 can be guided from the front and rear sides towards the oil drain 124, so that the oil on the first filter element 12 can quickly and well collect at the oil drain 124 and then be discharged.

[0051] In an alternative embodiment, such as Figure 7 and Figure 8As shown, the first filter screen 121 is inclined downward from front to back, and the second filter screen 122 is inclined downward from back to front. The oil on the first filter element 12 can flow along the inclined first filter screen 121 and second filter screen 122, which can avoid the oil from free falling due to its own weight caused by the first filter element 12 extending horizontally.

[0052] In an alternative embodiment, such as Figure 7 and Figure 8 As shown, the first filter element 12 also includes a first connector 123. The first filter screen 121, the first connector 123, and the second filter screen 122 are connected in sequence. The first connector 123 includes a first connecting plate 1231 and a second connecting plate 1232 arranged from left to right. The first connecting plate 1231 is inclined downward from left to right, and the second connecting plate 1232 is inclined downward from right to left. The oil drain port 124 is located at the connection position of the first filter screen 121, the first connector 123, and the second filter screen 122. The oil on the first connecting plate 1231 flows downward from left to right, and the oil on the second connecting plate 1232 flows downward from right to left, thereby enabling the oil on the first connecting member 123 to converge and flow towards the oil outlet 124. That is, the oil on the first filter member 12 can be guided from the left and right sides towards the oil outlet 124. The arrangement of the first filter screen 121, the first connecting member 123, and the second filter screen 122 cooperates with each other and works synergistically to enable the oil to flow better towards the oil outlet 124 from all directions.

[0053] In an alternative embodiment, such as Figure 7 and Figure 8 As shown, the third filter screen 2210 is inclined downward from front to back, and the fourth filter screen 2220 is inclined downward from back to front. An oil outlet 2240 is provided at the junction of the third filter screen 2210 and the fourth filter screen 2220. The oil outlet 2240 of the fifth filter element 220 of the main unit box 200 is connected to the interior of the first smoke collection chamber 10. The oil intercepted by the fifth filter element 220 can gather at the lowest position of the fifth filter element 220 and flow into the first smoke collection chamber 10 through the oil outlet 2240, which can prevent the oil on the fifth filter element 220 from dripping onto the stove 4000.

[0054] In addition, the arrangement of the third filter screen 2210 and the fourth filter screen 2220 can achieve a better collection effect on the oil on the fifth filter element 220. That is, the oil on the fifth filter element 220 can be guided from the front and rear sides towards the oil drain port 124, so that the oil on the fifth filter element 220 can quickly and well collect at the oil outlet 2240 and then be discharged.

[0055] In an alternative embodiment, such as Figure 7 and Figure 8As shown, the fifth filter element 220 also includes a second connector 2230. The third filter screen 2210, the second connector 2230, and the fourth filter screen 2220 are connected in sequence. The second connector 2230 includes a third connector plate 22310 and a fourth connector plate 22320 arranged from left to right. The third connector plate 22310 is inclined downward from left to right, and the fourth connector plate 22320 is inclined downward from right to left. The oil passage 2240 is located at the connection position of the third filter screen 2210, the second connector 2230, and the fourth filter screen 2220. The oil on the third connecting plate 22310 flows downward from left to right, and the oil on the fourth connecting plate 22320 flows downward from right to left, thereby enabling the oil on the second connecting piece 2230 to converge and flow towards the oil outlet 2240. That is, the oil on the fifth filter piece 220 can be guided from the left and right sides towards the oil outlet 2240. The arrangement of the third filter screen 2210, the second connecting piece 2230 and the fourth filter screen 2220 cooperates with each other and works synergistically to enable the oil to flow better towards the oil outlet 2240 from all directions.

[0056] In an alternative embodiment, such as Figures 6-8 As shown, when the smoke collection mechanism 100 switches from the working state to the off state, each smoke collection chamber switches from the unfolded mode to the retracted mode. The internal volume of the smoke collection chamber in the unfolded mode is larger than that in the retracted mode. In other words, when the smoke collection mechanism 100 is in the off state, both the first smoke collection chamber 10 and the second smoke collection chamber 20 are in the retracted mode, ensuring a smaller volume for the smoke collection mechanism 100 when off, saving kitchen space, improving the user experience, and further enhancing the ability of the hidden range hood 1000 to be easily concealed in the cabinet 2000 when not in operation. This effectively improves the concealment effect of the hidden range hood 1000 when not in operation, achieving true concealed installation. When the smoke collection mechanism 100 is in the working state, both the first smoke collection chamber 10 and the second smoke collection chamber 20 are in the unfolded mode, ensuring that both have a larger volume, guaranteeing better smoke extraction during use.

[0057] In summary, the smoke collection mechanism 100 of this embodiment can ensure a strong smoke extraction effect during use, and also maintain a small size when the machine is off, thus achieving true concealed installation.

[0058] In an alternative embodiment, such as Figure 7 and Figure 8As shown, the second smoke collection chamber body 21 includes a second fixed cover 211 and a second deformable cover 212. The second air inlet 212131 is opened on the second deformable cover 212. When the second smoke collection chamber body 21 is in the unfolded mode, at least part of the second deformable cover 212 extends forward and downward from the second fixed cover 211 at the same time, and the second air inlet 212131 moves forward and downward at the same time. The second air inlet 212131 is in a lower and forward position, so that the second air inlet 212131 is closer to the smoke source, effectively improving the smoke extraction effect of the hidden smoke hood 1000 in the working state.

[0059] In an alternative embodiment, such as Figure 6 As shown, when the second smoke-collecting chamber 20 is in the retracted mode, the second deformable cover 212 is nested in the second fixed cover 211, thereby making the volume of the second smoke-collecting chamber 20 in the retracted mode smaller, thus effectively reducing the volume of the smoke-collecting mechanism 100 in the off state.

[0060] In an optional embodiment, when the first smoke-collecting chamber 10 is in the retracted mode, the first deformable cover 112 is nested in the first fixed cover 111 and the first deformable cover 112 is folded and retracted into the first fixed cover 111. The extra space inside the first fixed cover 111 can further accommodate the second smoke-collecting chamber 20 in the retracted mode, thereby realizing the nesting of the first smoke-collecting chamber 10 and the second smoke-collecting chamber 20. Through the nesting of the first smoke-collecting chamber 10 and the second smoke-collecting chamber 20, the smoke-collecting mechanism 100, which has a large depth when unfolded, is housed into a flattened module with a volume only the size of the first fixed cover 111. This can minimize the visual volume and physical depth of the smoke-collecting mechanism 100 in the off state, further realizing the true stealth installation of the hidden range hood 1000, and perfectly solving the irreconcilable contradiction between the size and smoke extraction effect of the traditional hidden range hood 1000.

[0061] In an alternative embodiment, such as Figure 8 As shown, when the smoke collection mechanism 100 is in working condition, a first auxiliary smoke collection chamber 113 is formed between the back plate of the first deformable cover 112 and the first fixed cover 111. The first auxiliary smoke collection chamber 113 has a first auxiliary air inlet 1131, which is connected to the fourth filter screen 2220 and arranged from bottom to top. By setting the first auxiliary smoke collection chamber 113, the oil fumes directly below the fourth filter screen 2220 can be gathered, allowing the oil fumes directly below the fourth filter screen 2220 to pass through the fourth filter screen 2220 better, further improving the smoke absorption effect of the hidden range hood 1000.

[0062] In an alternative embodiment, such as Figure 8As shown, when the second smoke-collecting chamber 20 is in the unfolded mode, a second auxiliary smoke-collecting chamber 213 is formed between the back plate of the second deformable cover 212 and the second fixed cover 211. The second auxiliary smoke-collecting chamber 213 has a second auxiliary air inlet 2131, which is connected to the second filter screen 122 and arranged from bottom to top. By setting the second auxiliary smoke-collecting chamber 213, the oil fumes directly below the second filter screen 122 can be gathered, allowing the oil fumes directly below the second filter screen 122 to pass through the second filter screen 122 better, further improving the oil fume absorption effect of the concealed range hood 1000.

[0063] In an alternative embodiment, such as Figures 6-8 As shown, two adjacent smoke collection chambers are connected by a drive mechanism. The concealed smoke hood 1000 also includes a drive device 400, which can drive any one smoke collection chamber to switch between an unfolded mode and a retracted mode, so that the remaining smoke collection chambers can switch between the unfolded mode and the retracted mode synchronously. The concealed smoke hood 1000 of this embodiment can drive at least two smoke collection chambers to work synchronously and collaboratively with only one drive device 400. The drive device 400 has a simple structure, low cost, and reduces the internal installation space occupied, making the internal layout of the concealed smoke hood 1000 more compact and facilitating the overall miniaturization design of the concealed smoke hood 1000.

[0064] Furthermore, at least two smoke collection chambers can achieve synchronous and coordinated operation with only one drive unit 400, which can avoid the problem of at least two smoke collection chambers operating asynchronously due to setting multiple drive structures, and avoid the problem of at least two smoke collection chambers interfering with each other during operation.

[0065] In an optional embodiment, the driving device 400 is a linear drive mechanism, and the smoke gathering mechanism 100 includes a first smoke gathering chamber 10, a second smoke gathering chamber 20, and a connecting rod assembly 30. The first deformable cover 112 is movably connected to the first fixed cover 111. One end of the linear drive mechanism is directly or indirectly movably connected to the first fixed cover 111, and the other end of the linear drive mechanism is movably connected to the first deformable cover 112. The second fixed cover 211 is movably connected to the first deformable cover 112, and the second deformable cover 212 is movably connected to the second fixed cover 211. One end of the connecting rod assembly 30 is movably connected to the first deformable cover 112, and the other end of the connecting rod assembly 30 is movably connected to the second deformable cover 212. Through this structural design, a single linear drive mechanism can simultaneously achieve the linkage movement of the first smoke gathering chamber 10 and the second smoke gathering chamber 20.

[0066] For example, such as Figure 7 and Figure 8As shown, the first deformable cover 112 includes a first front connecting plate 1121 and a first rear connecting plate 1122 arranged at intervals from front to back. The upper ends of the first front connecting plate 1121 and the first rear connecting plate 1122 are directly or indirectly rotatably connected to the first fixed cover 111, respectively. A first air inlet 1123 is formed between the lower ends of the first front connecting plate 1121 and the lower ends of the first rear connecting plate 1122. The other end of the linear drive mechanism can be movably connected to the first front connecting plate 1121 or the first rear connecting plate 1122. Specifically, the upper end of the first front connecting plate 1121 is directly rotatably connected to the first fixed cover 111, and the upper end of the first rear connecting plate 1122 is directly rotatably connected to the fifth filter element 220 disposed on the first fixed cover 111.

[0067] In an alternative embodiment, such as Figures 6-8 As shown, the second deformable cover 212 includes a second deformable cover body 2121 and an extension 2122. The second deformable cover body 2121 is movably connected to the second fixed cover 211. The extension 2122 is formed by extending upward from the second deformable cover body 2121. The upper end of the extension 2122 is movably connected to the first deformable cover 112. Through the setting of the extension 2122, the power of the first deformable cover 112 can be better transmitted to the second smoke collection chamber 20, so as to realize the synchronous switching of the second smoke collection chamber 20 with the first smoke collection chamber 10.

[0068] For example, such as Figure 7 and Figure 8 As shown, the lower ends of the first front connecting plate 1121 and the first rear connecting plate 1122 are rotatably connected to the second fixed cover 211, respectively. The second deformable cover body 2121 includes a second front connecting plate 21211, a second rear connecting plate 21212, and a smoke collection chamber body 21213 with a second air inlet 212131. The second front connecting plate 21211 and the second rear connecting plate 21212 are arranged from front to back. The upper ends of the second front connecting plate 21211 and the second rear connecting plate 21212 are directly or indirectly rotatably connected to the second fixed cover 211, respectively. The lower ends of the second front connecting plate 21211 and the second rear connecting plate 21212 are rotatably connected to the smoke collection chamber body 21213, respectively. With this structure, when the linear drive mechanism is in the extended state, the second air inlet 212131 can move forward and downward simultaneously.

[0069] Example 2 like Figures 9-12 As shown, this embodiment of the disclosure provides a concealed range hood 1000, the structure of which is largely the same as that of the concealed range hood 1000 in Embodiment 1, the main difference being: Figures 9-12As shown, the oil cup 300 is always connected to one of the smoke collection chambers. When the smoke collection mechanism 100 is in the off state, the other smoke collection chambers are also connected to the oil cup 300 at the same time, so that the oil cup 300 can collect and summarize the oil accumulated inside all the smoke collection chambers, ensuring the overall cleanliness of the hidden range hood 1000 and avoiding the problem of oil inside the hidden range hood 1000 dripping onto the stove 4000.

[0070] In an alternative embodiment, such as Figures 9-12 As shown, a third oil outlet 212132 is provided on the bottom plate of the smoke collection chamber body 21213. The oil cup 300 has an opening 3100. The oil cup 300 is set on the smoke collection chamber body 21213 and is always connected to the third oil outlet 212132. The oil in the second deformation cover 212 can always flow into the oil cup 300 for collection.

[0071] like Figures 9-11 As shown, a first temporary oil storage area 1111 is provided on the first fixed cover 111. When the smoke collection mechanism 100 is in working state, the first temporary oil storage area 1111 can realize the function of temporary storage of oil inside the first fixed cover 111.

[0072] like Figures 9-11 As shown, the first temporary oil storage area 1111 has a first oil outlet 11111, and the first smoke collection chamber 10 also includes a first sealing mechanism 13. When the smoke collection mechanism 100 is in working condition, the first sealing mechanism 13 can seal the first oil outlet 11111, which can effectively prevent the leakage of oil inside the first fixed cover 111, prevent oil from flowing to the outside of the hidden range hood 1000 and the stove 4000, ensure the cleanliness of the kitchen, and ensure that users always have a better user experience.

[0073] like Figures 9-11 As shown, the oil cup 300 includes a trigger 3200. When the smoke collection mechanism 100 is in the off state, the trigger 3200 cooperates with the first sealing mechanism 13 to connect the first oil outlet 11111 with the opening 3100 of the oil cup 300, thereby realizing the collection of oil from the inside of the first fixed cover 111 to the oil cup 300.

[0074] like Figure 9 , Figure 10 and Figure 12 As shown, a second temporary oil storage area 2111 is provided on the second fixed cover 211. When the smoke collection mechanism 100 is in working state, the second temporary oil storage area 2111 can realize the function of temporary storage of oil inside the second fixed cover 211.

[0075] like Figure 9 , Figure 10 and Figure 12As shown, the second temporary oil storage area 2111 has a second oil outlet 21111, and the second smoke collection chamber 20 also includes a second sealing mechanism 23. When the smoke collection mechanism 100 is in working condition, the second sealing mechanism 23 can seal the second oil outlet 21111, which can effectively prevent the leakage of oil inside the second fixed cover 211, prevent oil from flowing to the outside of the hidden range hood 1000 and the stove 4000, ensure the cleanliness of the kitchen, and ensure that users always have a better user experience.

[0076] like Figure 9 , Figure 10 and Figure 12 As shown, the oil cup 300 includes a trigger 3200. When the smoke collection mechanism 100 is in the off state, the trigger 3200 cooperates with the second sealing mechanism 23 to connect the second oil outlet 21111 with the opening 3100 of the oil cup 300, thereby realizing the collection of oil from the inside of the second fixed cover 211 to the oil cup 300.

[0077] In an alternative embodiment, such as Figures 9-11 As shown, the first sealing mechanism 13 includes a first mounting component 131, a first resetting component 132, and a first movable component 133. The first mounting component 131 is disposed in the first temporary oil storage area 1111. The first mounting component 131 is connected to the first movable component 133 through the first resetting component 132. The oil cup 300 includes a trigger component 3200. When the smoke collection mechanism 100 is in working state, the trigger component 3200 cooperates with the first movable component 133 to open the first oil outlet 11111. Through the cooperation of the trigger component 3200 and the first movable component 133, the first oil outlet 11111 can achieve a precise opening effect when the smoke collection mechanism 100 is in working state. The structure of the first sealing mechanism 13 is simpler.

[0078] In an alternative embodiment, such as Figures 9-11 As shown, the first movable member 133 includes a first insertion part 1332, which can be a long rod-shaped structure. The long rod-shaped first insertion part 1332 can be well inserted into the first oil outlet 11111, thereby achieving a good sealing effect of the first movable member 133 on the first oil outlet 11111.

[0079] In other alternative embodiments, the first movable member 133 may also be a sealing plate (not shown in the figure). The sealing plate can move or rotate horizontally relative to the first temporary oil storage area 1111. By moving or rotating the sealing plate horizontally, a better switching effect of sealing or opening the first oil outlet 11111 can also be achieved.

[0080] In an alternative embodiment, such as Figures 9-11As shown, when the smoke collection mechanism 100 is in working condition, the first reset member 132 is used to reset the first movable member 133 so that the first movable member 133 blocks the first oil outlet 11111. The setting of the first reset member 132 can realize the rapid reset of the first movable member 133 and achieve the rapid blocking effect of the first movable member 133 on the first oil outlet 11111.

[0081] For example, the first reset member 132 can be a spring, a reset cylinder, a spring sheet, etc. All structures that can achieve the reset of the first movable member 133 are within the protection scope of this optional embodiment, which will not be described in detail here.

[0082] In an alternative embodiment, such as Figures 9-11 As shown, the first movable member 133 includes a first guide portion 1331. The first mounting member 131 is provided with a first guide groove 1311. The first guide portion 1331 is inserted into the first guide groove 1311 and can slide along the first guide groove 1311. The first reset member 132 is disposed in the first guide groove 1311 and is held by the first groove bottom plate of the first guide groove 1311 and the first guide portion 1331. By sliding the first guide portion 1331 in the first guide groove 1311, the first guide portion 1331 can always apply a good force to the first reset member 132 along the extension direction of the first guide groove 1311, which can avoid the sliding of the first guide portion 1331 from deviating and ensure that the first reset member 132 always has a good predetermined deformation effect.

[0083] In an alternative embodiment, such as Figures 9-11 As shown, the first movable member 133 may further include a first limiting portion 1333, which can cooperate with the first mounting member 131 to limit the upper limit position of the first guide portion 1331, so as to avoid damage to the first reset member 132 caused by excessive pressure from the first guide portion 1331. The first limiting portion 1333 can cooperate with the first temporary oil storage area 1111 to limit the lower limit position of the first movable member 133, so as to avoid damage to the first movable member 133 caused by excessive downward movement.

[0084] In an alternative embodiment, such as Figure 9 , Figure 10 and Figure 12As shown, the second sealing mechanism 23 includes a second mounting component 231, a second resetting component 232, and a second movable component 233. The second mounting component 231 is disposed in the second temporary oil storage area 2111. The second mounting component 231 is connected to the second movable component 233 through the second resetting component 232. The oil cup 300 includes a trigger component 3200. When the smoke collection mechanism 100 is in the working state, the trigger component 3200 cooperates with the second movable component 233 to open the second oil outlet 21111. Through the cooperation of the trigger component 3200 and the second movable component 233, the second oil outlet 21111 can achieve a precise opening effect when the smoke collection mechanism 100 is in the working state. The structure of the second sealing mechanism 23 is simpler.

[0085] In an alternative embodiment, such as Figure 9 , Figure 10 and Figure 12 As shown, the second movable member 233 includes a second insertion part 2332, which can be a long rod-shaped structure. The long rod-shaped second insertion part 2332 can be well inserted into the second oil outlet 21111, thereby achieving a good sealing effect of the second movable member 233 on the second oil outlet 21111.

[0086] In other alternative embodiments, the second movable member 233 may also be a sealing plate (not shown in the figure). The sealing plate can move or rotate horizontally relative to the second temporary oil storage area 2111. By moving or rotating the sealing plate horizontally, a better switching effect of sealing or opening the second oil outlet 21111 can also be achieved.

[0087] In an alternative embodiment, such as Figure 9 , Figure 10 and Figure 12 As shown, when the smoke collection mechanism 100 is in working condition, the second reset member 232 is used to reset the second movable member 233 so that the second movable member 233 blocks the second oil outlet 21111. The setting of the second reset member 232 can realize the rapid reset of the second movable member 233 and achieve the effect of rapid blocking of the second oil outlet 21111 by the second movable member 233.

[0088] For example, the second reset member 232 can be a spring, a reset cylinder, a spring sheet, etc. All structures that can realize the reset of the second movable member 233 are within the protection scope of this optional embodiment, which will not be described in detail here.

[0089] In an alternative embodiment, such as Figure 9 , Figure 10 and Figure 12As shown, the second movable member 233 includes a second guide portion 2331. The second mounting member 231 is provided with a second guide groove 2311. The second guide portion 2331 is inserted into the second guide groove 2311 and can slide along the second guide groove 2311. The second reset member 232 is disposed in the second guide groove 2311 and is held by the first groove bottom plate of the second guide groove 2311 and the second guide portion 2331. By sliding the second guide portion 2331 in the second guide groove 2311, the second guide portion 2331 can always apply a good force to the second reset member 232 along the extension direction of the second guide groove 2311, which can avoid the sliding of the second guide portion 2331 from deviating and ensure that the second reset member 232 always has a good predetermined deformation effect.

[0090] In an alternative embodiment, such as Figure 9 , Figure 10 and Figure 12 As shown, the second movable member 233 may further include a second limiting portion 2333, which can cooperate with the second mounting member 231 to limit the upper limit position of the second guide portion 2331, so as to avoid damage to the second reset member 232 caused by excessive pressure from the second guide portion 2331. The second limiting portion 2333 can cooperate with the second temporary oil storage area 2111 to limit the lower limit position of the second movable member 233, so as to avoid damage to the second movable member 233 caused by excessive downward movement.

[0091] In summary, through the synergistic effect of "the specific structure and setting of the oil cup 300", "the cooperation of the first sealing mechanism 13 and the second sealing mechanism 23 with the trigger 3200 respectively", and "the cooperation of the first sealing mechanism 13 and the second sealing mechanism 23 with the corresponding oil outlets respectively", the automatic collection and cleaning of oil stains in the concealed range hood 1000 in all states can be ensured, and the concealed range hood 1000 can prevent oil stains from dripping onto the stove 4000 in all states. Kitchens using this type of concealed range hood 1000 have a better level of cleanliness.

[0092] Example 3 like Figures 13-15 As shown, this embodiment of the disclosure provides a concealed range hood 1000, the structure of which is largely the same as that of the concealed range hood 1000 in Embodiment 1, the main difference being: Figures 13-15As shown, the smoke collection chamber also includes a sealing component and an oil fume property information detection mechanism. The filter element is equipped with a corresponding oil fume property information detection mechanism, which can acquire oil fume property information. The sealing component can adjust the sealing state of the filter element according to the oil fume property information. If there is no oil fume or the oil fume is relatively weak in the corresponding area of ​​the filter element, the corresponding area is sealed by the sealing component. Under the premise of good oil fume absorption, the hidden range hood 1000 can also operate with relatively low energy consumption and relatively low noise, thereby achieving an adaptive balance between oil fume filtration effect, energy efficiency, suction efficiency and low noise.

[0093] In an alternative embodiment, such as Figures 13-15 As shown, the concealed range hood 1000 includes an oil fume property detection component 60, which may include a first oil fume property detection mechanism 61. The sealing component 50 includes a first driving member 52 and a first sealing member 51. The first driving member 52 can drive the first sealing member 51 to open or seal the second filter screen 122. For example, the first driving member 52 may be a rotary motor, a linear drive motor, etc. All structures capable of switching the position of the first sealing member 51 are within the protection scope of this optional embodiment.

[0094] In an alternative embodiment, such as Figures 13-15 As shown, the concealed range hood 1000 includes an oil fume property detection component 60, which may further include a second oil fume property detection mechanism 62. The sealing component 50 may further include a second driving member 54 and a second sealing member 53. The second driving member 54 can drive the second sealing member 53 to open or seal the fourth filter screen 2220. For example, the second driving member 54 may be a rotary motor, a linear drive motor, etc. All structures capable of switching the position of the second sealing member 53 are within the protection scope of this optional embodiment.

[0095] Among them, such as Figure 15 As shown, the fan 230, the first oil fume property detection mechanism 61, the second oil fume property detection mechanism 62, the first drive component 52, and the second drive component 54 are respectively connected to the control mechanism 70 of the concealed smoke hood 1000.

[0096] For example, the first oil fume property testing institution 61 and the second oil fume property testing institution 62 can be an oil fume concentration testing institution, an oil fume flow rate testing institution, etc. All testing institutions that can reflect the oil fume conditions in the corresponding area are within the protection scope of this optional embodiment.

[0097] like Figure 13As shown, when the concealed range hood 1000 is turned on, the first smoke collection chamber 10 and the second smoke collection chamber 20 are fully extended forward and downward, keeping the second filter screen 122 and the fourth filter screen 2220 blocked by the corresponding sealing parts. The control fan 230 is operated only at a low speed. In this mode, all the air volume of the concealed range hood 1000 is forcibly concentrated through the most effective second air inlet 212131, which can achieve a better absorption effect for small areas of oil fumes. This can achieve a better cleaning effect for small areas of oil fumes with low energy consumption and low operating noise, reduce the spread of oil fumes from the source, and greatly improve the comfort of daily use.

[0098] like Figure 14 As shown, when the first oil fume property detection mechanism 61 detects oil fumes, the first driving component 52 drives the first sealing component 51 to open the second filter screen 122 and adjusts the fan 230 to the medium speed setting; when the second oil fume property detection mechanism 62 also detects oil fumes, the second driving component 54 drives the second sealing component 53 to open the fourth filter screen 2220 and adjusts the fan 230 to the high speed setting.

[0099] In summary, the concealed range hood 1000 prioritizes ensuring the effective airflow of the second air inlet 212131, achieving an adaptive balance between fume filtration, energy efficiency, suction efficiency, and low noise. The second filter 122 and the fourth filter 2220 only open when there is actual fume escape in their respective areas, activating in stages according to severity. This ensures that the concealed range hood 1000 operates with lower power and noise levels in most cooking situations, only activating at full power in extreme conditions such as stir-frying. Thus, it dynamically and intelligently achieves an adaptive balance between fume filtration, energy efficiency, suction efficiency, and low noise, optimizing overall performance.

[0100] Example 4 like Figure 16 As shown, the structure of the concealed smoke hood 1000 disclosed in this embodiment is basically the same as that of the concealed smoke hood 1000 in Embodiment 1. The main difference between the two is that the smoke collection mechanism 100 includes a smoke collection hood 80, which is provided with a main air inlet 81 and a main air outlet 82. At least two layers of sixth filters 90 are disposed inside the smoke collection hood 80. The bottommost sixth filter 90 and the portion of the adjacent upper sixth filter 90 extending to the rear side of the adjacent lower sixth filter 90 are directly connected to the external space of the smoke collection mechanism 100 through the main air inlet 81.

[0101] In other words, the fumes in path S1 can pass through four layers of the sixth filter element 90, the fumes in path S2 which is slightly further back can pass through three layers of the sixth filter element 90, the fumes in path S3 which is further back can pass through two layers of the sixth filter element 90, and the fumes in path S4 which is last can only pass through one layer of the sixth filter element 90. Through the design of the aforementioned smoke collection mechanism 100, multiple functions can be unified, including "serial deep purification from bottom to top" and "parallel escape capture from front to back". The smoke collection mechanism 100 can be well matched with the gradient distribution of oil fumes generated during actual cooking, which is "heavy in front and light in back, heavy at the bottom and light at the top". It can achieve precise configuration of "heavy filtration of high-concentration oil fumes in front of and below the cookware 3000, and light filtration of low-concentration oil fumes in the rear and above the cookware 3000". The smoke collection mechanism 100 can ensure good absorption of oil fumes in each area, while also coordinating the overall suction loss and energy consumption of the hidden range hood 1000. The hidden range hood 1000 achieves synergistic optimization of oil fume filtration effect, energy loss, suction loss and air circulation efficiency.

[0102] Compared with the hidden range hood 1000 in Embodiment 1, the hidden range hood 1000 of this disclosure has a simpler structure and lower cost.

[0103] 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 by, Includes a smoke collection mechanism (100), said smoke collection mechanism (100) comprising: The main air inlet (81) and the main air outlet (82); At least two layers of filter elements are arranged at intervals in the vertical direction. The number of filter elements through which the fumes flowing from the main air inlet (81) to the main air outlet (82) pass decreases from front to back.

2. The oil fume treatment device according to claim 1, characterized in that, At least two layers of the filter elements constitute at least two filtration zones arranged from front to back, and the number of filter elements included in the at least two filtration zones gradually decreases from front to back.

3. The oil fume treatment device according to claim 2, characterized in that, The projection of any one of the filter elements on the horizontal plane does not completely coincide with the projections of all the filter elements below it on the horizontal plane. Any one of the filter elements extends behind its adjacent lower layer filter element. The oil fumes of the corresponding filter area flow through the bottommost filter element of the corresponding filter area and all other filter elements above the bottommost filter element.

4. The oil fume treatment device according to claim 3, characterized in that, The smoke collection mechanism (100) includes at least two smoke collection chambers, each including the filter element and a smoke collection chamber body with an air inlet, the filter element being disposed at the air inlet; when the smoke collection mechanism (100) is in operation, at least two smoke collection chamber bodies are arranged vertically, and adjacent smoke collection chambers are connected through the filter element of the adjacent upper smoke collection chamber; or The smoke collection mechanism (100) includes a smoke collection hood (80), on which the main air inlet (81) and the main air outlet (82) are provided, and at least two layers of the filter elements are disposed inside the smoke collection hood (80).

5. The fume treatment device according to claim 4, characterized in that, The filter element includes a first filter screen (121) and a second filter screen (122) arranged from front to back. The first filter screen (121) is inclined downward from front to back, and the second filter screen (122) is inclined downward from back to front. An oil leakage port (124) is provided at the connection position of the first filter screen (121) and the second filter screen (122). The oil leakage port (124) of the adjacent upper smoke collection chamber is connected to the interior of the adjacent lower smoke collection chamber.

6. The fume treatment device according to claim 5, characterized in that, The filter element also includes: The first connector (123) is connected in sequence with the first filter screen (121), the first connector (123) and the second filter screen (122). The first connector (123) includes a first connecting plate (1231) and a second connecting plate (1232) arranged from left to right. The first connecting plate (1231) is inclined downward from left to right, and the second connecting plate (1232) is inclined downward from right to left. The oil leak (124) is located at the connection position of the first filter screen (121), the first connector (123) and the second filter screen (122).

7. The oil fume treatment device according to any one of claims 1 to 6, characterized in that, The smoke collection mechanism (100) also includes a sealing component and an oil fume property information detection mechanism. The filter element is equipped with the corresponding oil fume property information detection mechanism. The oil fume property information can be obtained. The sealing component can adjust the sealing state of the filter element according to the oil fume property information.

8. The oil fume treatment device according to any one of claims 4 to 6, characterized in that, When the smoke collection mechanism (100) switches from the working state to the off state, each smoke collection chamber switches from the unfolded mode to the retracted mode, and the internal volume of the smoke collection chamber in the unfolded mode is greater than the internal volume of the smoke collection chamber in the retracted mode.

9. The fume treatment device according to claim 8, characterized in that, The smoke collection chamber includes a fixed cover and a deformable cover; wherein: When the smoke collection chamber is in the deployed mode, at least a portion of the deformable cover simultaneously extends forward and downward from the fixed cover; and / or When the smoke-collecting chamber is in the retracted mode, the fixed cover and the deformable cover are nested together; and / or When the smoke collection chamber is in the closing mode, two adjacent smoke collection chambers are nested together.

10. The fume treatment device according to claim 8, characterized in that, The two adjacent smoke collection chambers are connected by a drive mechanism. The fume treatment device also includes a drive device (400). The drive device (400) can drive any one of the smoke collection chambers to switch between the unfolded mode and the retracted mode, so that the remaining smoke collection chambers can switch between the unfolded mode and the retracted mode synchronously.

11. The oil fume treatment device according to claim 10, characterized in that, The driving device (400) is a linear driving mechanism, and the smoke-collecting mechanism (100) includes: The first smoke collection chamber (10) includes a first fixed cover (111) and a first deformable cover (112). The first deformable cover (112) is movably connected to the first fixed cover (111). One end of the linear drive mechanism is directly or indirectly movably connected to the first fixed cover (111), and the other end of the linear drive mechanism is movably connected to the first deformable cover (112). The second smoke collection chamber (20) and the connecting rod assembly (30) include a second fixed cover (211) and a second deformable cover (212). The second fixed cover (211) is movably connected to the first deformable cover (112), and the second deformable cover (212) is movably connected to the second fixed cover (211). One end of the connecting rod assembly (30) is movably connected to the first deformable cover (112), and the other end of the connecting rod assembly (30) is movably connected to the second deformable cover (212).

12. The fume treatment device according to any one of claims 4 to 6, characterized in that, The fume treatment device also includes: The oil cup (300) is always connected to one of the smoke collection chambers. When the smoke collection mechanism (100) is in the off state, the other smoke collection chambers are also connected to the oil cup (300).

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