Smoke assembly and extractor hood

Abstract

The application relates to a smoke collecting assembly and a range hood. The smoke collecting assembly is arranged at a shell mounting port of the range hood and comprises: a flow guide cover, the flow guide cover comprises first and second air inlet plates which are arranged adjacent in a first direction, the first and second air inlet plates comprise proximal edges which are close to each other and distal edges which are away from each other, two proximal edges are connected, two distal edges are connected with the shell respectively, and the first and second air inlet plates are inclined to the inside of the shell along the direction from the proximal edge to the distal edge; and first and second air inlets which are respectively arranged on the first and second air inlet plates, the first and second air inlets gradually decrease in opening area along the direction from the proximal edge to the distal edge. The above scheme can improve the smoke suction effect of the left and right air inlets of the range hood.

Description

Technical Field

[0001] This application relates to the field of kitchen appliances technology, and in particular to a smoke collection component and a range hood. Background Technology

[0002] In related technologies, the negative pressure distribution of side-suction range hoods is mainly located in the lower middle part of the range hood, and the negative pressure distribution range is relatively narrow. However, the actual stove is located on the left and right sides of the range hood, and the air inlets on the left and right sides of the range hood are far away from the fan and the dual stoves, resulting in poor smoke extraction effect. Summary of the Invention

[0003] This application provides a smoke collection assembly and a range hood to solve the problem of poor smoke extraction effect of the left and right air inlets of range hoods in the related art.

[0004] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a smoke collection assembly, which is disposed at the housing installation port of a range hood, including a guide hood. The guide hood includes a first air vent plate and a second air vent plate arranged adjacent to each other in a first direction. The first air vent plate and the second air vent plate include proximal edges that are close to each other and distal edges that are far from each other. The two proximal edges are connected, and the two distal edges are respectively connected to the housing. The first air vent plate and the second air vent plate are inclined towards the inside of the housing along the direction from the proximal edge to the distal edge.

[0005] The first air inlet and the second air inlet are respectively opened on the first air vent plate and the second air vent plate, and the opening area of ​​the first air inlet and the second air inlet gradually decreases along the direction from the proximal edge to the distal edge.

[0006] The beneficial effects of this application are as follows: The smoke collection component provided by this application has a central part of the guide hood that protrudes outward, which expands the negative pressure outward in a low-cost manner, thereby improving the smoke extraction effect in the middle of the range hood. The sides of the smoke collection component are concave compared to the center, and the change in depth provides a temporary storage space for the high-speed flowing smoke, preventing a large amount of oil smoke from escaping through the gap between the air inlet and the opening plate due to not being sucked away in time. The air inlet is set as an irregularly shaped air inlet with a larger central part and a smaller side part, which further accelerates the smoke extraction rate on both sides of the range hood.

[0007] In some embodiments, the smoke collection assembly further includes an oil mesh disposed within the first air inlet and the second air inlet, and matched with the first air inlet and the second air inlet. The oil mesh is provided with a plurality of mesh holes, and the mesh opening area near the distal edge of the oil mesh is larger than the mesh opening area near the proximal edge.

[0008] In some embodiments, the smoke collection assembly has a length along a first direction X and a width along a second direction Y, wherein the width of the first vent plate and the second vent plate gradually decreases along the direction from the proximal edge to the distal edge, wherein the width ratio of the distal edge to the proximal edge is 0.45 to 0.75.

[0009] In some embodiments, both the first air vent plate and the second air vent plate include an upper edge and a lower edge connecting the proximal edge and the distal edge, the proximal edge, the distal edge, the upper edge, and the lower edge defining the shape of the air vent plate, wherein the angle between the proximal edge and the upper edge ranges from 80° to 85°.

[0010] In some embodiments, the angle between the proximal edge and the lower edge ranges from 80° to 85°.

[0011] In some embodiments, the plane where the fairing connects to the housing is a mating surface, and the ratio of the distance from the proximal edge to the mating surface to the distance from the distal edge to the mating surface is 0.35 to 0.65.

[0012] In some embodiments, the angle between the upper edge and the mating surface is 1° to 11°.

[0013] In some embodiments, the plane where the fairing connects to the housing is a mating surface, and the proximal edge is parallel to the mating surface; or, the proximal edge has a vertex that intersects with the upper edge and a base point that intersects with the lower edge, and the proximal edge slopes toward the mating surface along the direction from the base point to the vertex.

[0014] In some embodiments, the distal edge is parallel to the mating surface; or, the distal edge has an upper endpoint intersecting the upper edge and a lower endpoint intersecting the lower edge, and the distal edge is inclined toward the mating surface along the direction from the lower endpoint to the upper endpoint.

[0015] In some embodiments, the air deflector includes a side plate, an upper plate, and a lower plate, with the distal edges of the first air vent plate and the second air vent plate respectively connected to the side plate, and the upper plate and the lower plate located above and below the first air vent plate and the second air vent plate respectively.

[0016] In some embodiments, both the first air vent plate and the second air vent plate include an upper edge and a lower edge connecting the near edge and the far edge, the upper edges of the first air vent plate and the second air vent plate are respectively connected to the upper plate, and the lower edges of the first air vent plate and the second air vent plate are respectively connected to the lower plate.

[0017] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a smoke collection assembly with a centrally protruding baffle that expands the negative pressure range and improves the suction effect of the central section through a simple method. Furthermore, the sides of the baffle are recessed relative to the center, providing temporary storage space for rapidly flowing smoke and preventing leakage from the gaps in the opening and closing plates due to failure to absorb the smoke in time. Additionally, the air inlet adopts an irregular design with a larger central section and smaller sides, further accelerating the smoke extraction rate on both sides of the range hood.

[0018] The technical problem to be solved by this application is the poor smoke extraction effect of the air inlets on the left and right sides of the range hood.

[0019] To solve the above-mentioned technical problems, another technical solution adopted in this application is: to provide a range hood, including a smoke collection component and a housing as described in any of the above embodiments; the housing forms a fan channel and a smoke inlet channel that are connected together, and is provided with an installation port that communicates with the smoke inlet channel; the smoke collection component is connected to the housing and installed at the installation port.

[0020] The beneficial effects of the range hood described in this application are the same as those of the aforementioned smoke collection components, and will not be repeated here. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0022] Figure 1 This is a three-dimensional structural diagram of the range hood's opening and closing plate when closed, provided in an embodiment of this application.

[0023] Figure 2 This is a cross-sectional view of the range hood provided in this application;

[0024] Figure 3 This is a three-dimensional structural diagram of the opening and closing plate of the range hood provided in the embodiment of this application when it is opened;

[0025] Figure 4 This is a frontal schematic diagram of the smoke collection assembly provided in the embodiments of this application;

[0026] Figure 5 This is a top view of the smoke collection assembly provided in the embodiments of this application;

[0027] Figure 6 This is a schematic diagram of the flow of condensate oil in the smoke collection assembly provided in the embodiments of this application;

[0028] Figure 7This is a schematic diagram of the oil mesh openings of the smoke collection assembly provided in the embodiments of this application;

[0029] Figure 8 This is a schematic diagram of another oil mesh opening in the smoke collection assembly provided in the embodiments of this application;

[0030] Figure 9 yes Figure 4 A cross-sectional view along the AA direction.

[0031] Explanation of reference numerals in the attached figures:

[0032] Range hood 1;

[0033] First direction X; Second direction Y; Third direction Z;

[0034] Smoke collection assembly 10; air guide hood 110; first air outlet plate 1101; second air outlet plate 1102; connecting plate 1103; side plate 1104; upper plate 1105; lower plate 1106; upper edge 1107; lower edge 1108; oil mesh 120; first air inlet 130; second air inlet 140; first smoke guiding chamber 150; second smoke guiding chamber 160;

[0035] Housing 20; Mounting port 210;

[0036] Fan assembly 30;

[0037] Hinged panel 40;

[0038] Oil cup 50;

[0039] Panel 60. Detailed Implementation

[0040] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0041] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] In related technologies, the negative pressure distribution of side-suction range hoods is mainly located in the lower middle part of the range hood, and the negative pressure distribution range is relatively narrow. However, the actual stove is located on the left and right sides of the range hood, and the air inlets on the left and right sides of the range hood are far away from the fan and the dual stoves, resulting in poor smoke extraction effect.

[0045] This application provides a smoke collection assembly 10 and a range hood 1. Please refer to [link / reference]. Figures 1 to 3 , Figure 1 This is a three-dimensional structural diagram of the range hood's opening and closing plate when closed, provided in an embodiment of this application. Figure 2 This is a cross-sectional view of the range hood provided in this application; Figure 3 This is a three-dimensional structural diagram of the opening and closing plate of the range hood provided in the embodiment of this application when it is opened.

[0046] This application provides a smoke collection assembly 10 for use in a range hood 1. The range hood 1 includes a housing 20 with an installation port 210 connected to a fan assembly 30. The fan assembly 30 drives the fan blades to rotate via a motor, creating a negative pressure environment. Oil fumes enter the main body of the range hood housing 20 through the installation port 210, which is part of the smoke inlet channel, effectively drawing in oil fumes and expelling them outdoors. The housing 20 is also equipped with an opening / closing plate 40, which can rotate around the housing 20 to open or close the installation port 210. When the installation port 210 is closed, the surface of the opening / closing plate 40 remains flush with the lower panel 60 of the housing 20, achieving a smooth closure.

[0047] The first direction X is horizontal, the second direction Y is vertical, and the third direction is perpendicular to the first direction X and the second direction Y.

[0048] like Figure 3 As shown, the smoke collection assembly 10 provided in this application is disposed at the mounting port 210 of the housing 20 of the range hood 1. When the mounting port 210 is in the open state, it is used to collect and guide external fumes into the interior of the range hood 1. The smoke collection assembly 10 includes a guide hood 110, which includes two adjacent air vent plates 1101 and 1102 arranged along a first direction X. The first air vent plates 1101 and 1102 include proximal edges that are close to each other and distal edges that are far from each other. The proximal edges are close to the middle of the smoke collection assembly 10 in the first direction X, and the distal edges are close to both ends of the smoke collection assembly 10 in the first direction X. The proximal edges of the first air vent plates 1101 and 1102 are connected to each other by a connecting plate 1103. In other embodiments, the proximal edges of the first air vent plate 1101 and the second air vent plate 1102 are joined together to form a connecting plate 1103 at the junction of the first air vent plate 1101 and the second air vent plate 1102. The connecting plate 1103 is formed by splicing the proximal edges of the first air vent plate 1101 and the second air vent plate 1102. In other embodiments, the proximal edges of the first air vent plate 1101 and the second air vent plate 1102 are joined together to form a connecting ridge at the junction of the first air vent plate 1101 and the second air vent plate 1102. The connecting plate 1103 or the connecting ridge is disposed in the middle of the air guide hood 110 and extends along the second direction Y. The connecting plate 1103 or the connecting ridge can enhance the structural stability of the entire air guide hood 110 and ensure that the air guide hood 110 can maintain its shape during the use of the range hood 1. The distal edges of the first air vent plate 1101 and the second air vent plate 1102 are connected to the housing 20, respectively. The connecting plate 1103 protrudes outward from the distal edge of the housing 20. The first air vent plate 1101 and the second air vent plate 1102 extend from the proximal edge to the distal edge in an inclined state, that is, they are not parallel to the panel 60 of the housing 20, but the distal edges of the first air vent plate 1101 and the second air vent plate 1102 are inclined inward towards the inside of the housing 20, where the inside refers to the interior of the main body of the housing 20. The distal edges of the first air vent plate 1101 and the second air vent plate 1102 form a recessed first smoke guiding cavity 150 and a second smoke guiding cavity 160 with the housing 20, providing a space to accommodate high-velocity fumes and preventing a large amount of fumes from escaping from the gap between the opening and closing plate 40 and the housing 20 due to not being sucked away in time. The smoke collection assembly 10 can collect smoke more efficiently, thereby improving the overall suction and exhaust effect of the range hood 1.

[0049] Continue reading Figure 3The first air vent plate 1101 and the second air vent plate 1102 are respectively provided with a first air inlet 130 and a second air inlet 140. The opening area of ​​the first air inlet 130 and the second air inlet 140 gradually decreases along the direction from the near edge to the far edge. That is, the smoke collection assembly 10 has a length along the first direction X and a width along the second direction Y. From the middle of the smoke collection assembly 10 to both ends in the first direction X, the width of the first air inlet 130 and the second air inlet 140 gradually decreases, and the opening area decreases accordingly. According to the principle of aerodynamics, when the fumes pass through the far edges of the first air inlet 130 and the second air inlet 140, the smaller opening area can increase the flow rate of the fumes, thereby improving the suction efficiency on both sides of the range hood 1.

[0050] See Figure 4 and Figure 5 The air deflector 110 also includes a side plate 1104, an upper plate 1105, and a lower plate 1106. The side plate 1104 is the side boundary of the air deflector 110 in the first direction X. The upper plate 1105 and the lower plate 1106 are the upper boundary and the upper edge of the air deflector 110 in the second direction Y. The far edges of the first air vent plate 1101 and the second air vent plate 1102 are respectively connected to the side of the two side plates 1104 near the far edge. The other side of the two side plates 1104 are respectively connected to the housing 20. The upper plate 1105 and the lower plate 1106 are located on the upper and lower sides of the first air vent plate 1101 and the second air vent plate 1102, respectively. Side plate 1104, upper plate 1105 and lower plate 1106 enclose a first smoke guide cavity 150 and a second smoke guide cavity 160 that connect the first air inlet 130 and the second air inlet 140. The plane where the guide hood 110 connects to the housing 20 is the mating surface. The first smoke guide cavity 150 is a cavity structure formed by the side plate 1104, upper plate 1105, lower plate 1106, first air vent plate 1101 and the mating surface that connects the outside of the range hood 1 and the first air inlet 130. The second smoke guide cavity 160 is a cavity structure formed by the side plate 1104, upper plate 1105, lower plate 1106, second air vent plate 1102 and the mating surface that connects the outside of the range hood 1 and the second air inlet 140. The first smoke guide cavity 150 and the second smoke guide cavity 160 are symmetrically distributed about the connecting plate 1103 or the connecting ridge.

[0051] See Figure 5 , Figure 5This is a top view of the smoke collection assembly provided in this application embodiment. The smoke collection assembly 10 has an overall appearance of an M-shape with a convex center and concave sides in the first direction X. The convex center of the smoke collection assembly 10 and the near edges of the first air inlet 130 and the second air inlet 140 are close to the fan assembly 30 and the dual stoves. The path that the fumes take before entering the fan assembly 30 is shorter, which can achieve the expansion of the negative pressure area at a lower cost. Specifically, the convex structure in the center of the smoke collection assembly 10 can effectively increase the area of ​​the negative pressure area, so that more fumes are quickly drawn in under the action of negative pressure, improving the smoke extraction efficiency and reducing the diffusion of fumes. The smoke collection assembly 10 is located on both sides in the first direction X, which are far from the fan assembly 30 and the dual stoves, resulting in lower negative pressure and less effective smoke extraction compared to the center. To compensate for this deficiency, the smoke collection assembly 10 is recessed on both sides to form a first smoke guide cavity 150 and a second smoke guide cavity 160. By deepening the cavity shape, a space is provided to accommodate high-velocity smoke. On the one hand, this can temporarily store the smoke when there is a large amount of instantaneous oil smoke, preventing it from escaping into the kitchen space. On the other hand, the first smoke guide cavity 150 and the second smoke guide cavity 160 also provide sufficient time for the first air inlet 130 and the second air inlet 140 to draw away the smoke, preventing it from escaping through the gap between the smoke collection assembly 10 and the opening and closing plate 40 if it is not drawn away in time.

[0052] Continue reading Figure 4The smoke collection assembly 10 features an irregularly shaped air inlet with a larger central inlet and smaller side inlets. By increasing the air intake area of ​​the first air inlet 130 and the second air inlet 140 near the center of the smoke collection assembly 10, the central inlet, being closer to the fan assembly 30 and the dual burners, can more directly and quickly capture the fumes released from the dual burners, resulting in better smoke extraction. Furthermore, the larger air intake area allows more fumes to pass through at a lower speed, reducing the flow rate and thus decreasing the overall noise of the range hood 1. In contrast, the side inlets of the smoke collection assembly 10, being farther from the fan assembly 30 and the dual burners, naturally have a less effective smoke extraction than the central inlets. However, since the side inlets handle relatively less fumes than the central inlet, the design of this area can focus more on improving smoke extraction rather than handling a large amount of fumes. Therefore, the first smoke guiding cavity 150 and the second smoke guiding cavity 160, which are concave on both sides of the smoke collection assembly 10, provide a space to accommodate the high-velocity smoke and prevent the spread of oil fumes. Furthermore, by reducing the air intake area of ​​the first air inlet 130 and the second air inlet 140 near the sides of the smoke collection assembly 10, the airflow velocity can be increased, thereby improving the smoke extraction effect on both sides of the smoke collection assembly 10 in the first direction X. The smoke collection assembly 10, by being designed in an M-shape with a convex center and concave sides, combined with a large width at the center air inlet and small widths at the side air inlets, achieves efficient and uniform smoke extraction through the cavity design of different areas and the differentiation of air inlet widths, while simultaneously preventing the escape of oil fumes.

[0053] See Figure 7 and Figure 8 In one embodiment, an oil mesh 120 with a matching profile is provided at the first air inlet 130 and the second air inlet 140. This ensures that the oil mesh 120 can fit tightly against the first air inlet 130 and the second air inlet 140 after installation, preventing oil fume leakage. The oil mesh 120 is connected to the first air vent plate 1101 and the second air vent plate 1102 by screws. In other embodiments, welding or other methods can also be used. The oil mesh 120 has several mesh holes, which allow oil fumes to pass through smoothly while intercepting grease particles in the oil fumes. To further improve the smoke extraction effect, the mesh holes of the oil mesh 120 are designed with irregular aperture sizes, with the mesh opening area near the far edge being larger than that near the near edge. The smoke collection assembly 10 has a larger mesh opening area at its distal edge, which facilitates smoke flow, reduces resistance, and allows oil fumes to pass through the oil screen more quickly. The smoke collection assembly 10 also has a smaller mesh opening area at its proximal edge, which better intercepts grease particles, preventing them from entering the internal fan assembly 30 and reducing cleaning and maintenance costs. The mesh shape of the oil screen 120 can be circular, hexagonal, rhomboid, or rectangular, etc.

[0054] See Figure 4The smoke collection assembly 10 has a length along a first direction X and a width along a second direction Y. The widths of the first vent plate 1101 and the second vent plate 1102 gradually decrease along the direction from the proximal edge to the distal edge, resulting in a roughly trapezoidal outline. Specifically, the width of the distal edge of the first vent plate 1101 and the second vent plate 1102 is L1, and the width of the proximal edge is L2. To further improve the smoke extraction rate on both sides of the range hood 1, the ratio of L1 to L2 is between 0.45 and 0.75. The width of the distal edge of the first vent plate 1101 and the second vent plate 1102 can be reduced by at least 25% and at most 55% relative to the width of the proximal edge. This not only increases the negative pressure in the middle of the smoke collection assembly 10 but also increases the smoke extraction speed on both sides of the smoke collection assembly 10 in the first direction X, thereby improving the smoke extraction performance. In other embodiments, the width ratio of the distal edge to the proximal edge can be 0.5, 0.6, 0.7, etc.

[0055] See Figure 6 The smoke collection assembly 10 has an overall M-shaped appearance, with a convex center and concave sides in the first direction X. The upper plate 1105 slopes downwards from the proximal edge to the distal edge, roughly forming an inclined triangle. Conversely, the lower plate 1106 slopes downwards from the distal edge to the proximal edge, also roughly forming an inclined triangle. The convex design in the middle reduces the relative area of ​​the two inclined surfaces of the upper and lower plates 1105 and 1106 of the hood 110, effectively reducing the contact area of ​​oil fumes on the upper and lower plates 1105 and 1106. The smaller area for condensed oil formation helps reduce oil accumulation. See also... Figure 6 The black arrow in the diagram illustrates the flow of condensed oil. The condensed oil inside the entire cavity can be guided to the middle position at the bottom of the smoke collection assembly 10 by the guiding effect of the inclined upper plate 1105, side plate 1104, and inclined lower plate 1106. The condensed oil on the connecting plate 1103 can slide vertically down along the connecting plate 1103 to the middle position at the bottom of the smoke collection assembly 10, and then flow down along the panel 60 to the oil cup 50, which helps to collect and clean the condensed oil.

[0056] See also Figure 4The first air vent plate 1101 and the second air vent plate 1102 are designed with a trapezoidal outline. Specifically, the first air vent plate 1101 and the second air vent plate 1102 each include an upper edge 1107 and a lower edge 1108 connecting the near edge and the far edge. The upper edge 1107 of the first air vent plate 1101 and the second air vent plate 1102 are respectively connected to the upper plate 1105, and the lower edge 1108 of the first air vent plate 1101 and the second air vent plate 1102 are respectively connected to the lower plate 1106. The near edge, the far edge, the upper edge, and the lower edge define the shape of the first air vent plate 1101 and the second air vent plate 1102. The angle α between the near edge and the upper edge 1107 is in the range of 80° to 85°, and the angle b between the near edge and the lower edge 1108 is in the range of 80° to 85°. By limiting the tilt angle of the upper edge 1107, the condensed oil on the upper plate 1105 flows along the upper plate 1105 from the near edge to the far edge, until it flows down to the lower plate 1106 through the side plate 1104. By limiting the tilt angle of the lower edge 1108, the condensed oil on the lower plate 1106 flows from the far edge to the near edge, until it gathers at the middle position of the bottom of the smoke collection assembly 10, and flows down along the panel 60 into the oil cup 50, so as to ensure that the condensed oil can flow smoothly without dripping or accumulating.

[0057] In one embodiment, the first air vent plate 1101 and the second air vent plate 1102 may be isosceles trapezoids, with the angle α between the near edge and the upper edge 1107 ranging from 80° to 85°, and the angle b between the near edge and the lower edge 1108 ranging from 80° to 85°, where angle α equals angle b. In other embodiments, the first air vent plate 1101 and the second air vent plate 1102 may be non-isosceles trapezoids, with the angle α between the near edge and the upper edge 1107 ranging from 80° to 85°, and the angle b between the near edge and the lower edge 1108 ranging from 80° to 85°, where angle α and angle b are different.

[0058] See Figure 5The plane where the air deflector 110 connects to the housing 20 is the mating surface. This plane is the area where the air deflector 110 and the housing 20 are joined, ensuring the sealing and stability between them. In one embodiment, the proximal and distal edges of the first air vent plate 1101 and the second air vent plate 1102 are parallel to the mating surface, respectively. The distance from the proximal edge of the first air vent plate 1101 and the second air vent plate 1102 to the mating surface is L3, and the distance from the distal edge of the first air vent plate 1101 and the second air vent plate 1102 to the mating surface is L4. The ratio of L3 to L4 is 0.35 to 0.65. In another embodiment, the proximal and distal edges of the first air vent plate 1101 and the second air vent plate 1102 are not parallel to the joint surface. The distance from the proximal intercept point on the proximal edge of the first air vent plate 1101 and the second air vent plate 1102 to the joint surface is L3, and the distance from the distal intercept point on the distal edge of the first air vent plate 1101 and the second air vent plate 1102 to the joint surface is L4. The ratio of L3 to L4 is 0.35 to 0.65. The smoke collection assembly 10 is designed to have an M-shaped cavity with an outward convexity and an inward concavity. This design allows the near edges of the first air vent plate 1101 and the second air vent plate 1102 to protrude outwards towards the range hood 1, increasing negative pressure and improving the smoke extraction effect of the range hood 1. At the same time, the far edges of the first air vent plate 1101 and the second air vent plate 1102 to be recessed inwards towards the range hood 1 provide a buffer space for the smoke on both sides of the range hood 1, preventing the smoke from spreading and escaping.

[0059] See also Figure 5 The angle c between the upper edge 1107 of the first air vent plate 1101 and the second air vent plate 1102 and the mating surface is 1° to 11°. By limiting the range of the angle c, the first air vent plate 1101 and the second air vent plate 1102 are inclined towards the third direction Z of the range hood 1. The third direction Z refers to the direction perpendicular to the first direction and the second direction. The distal edges of the first air vent plate 1101 and the second air vent plate 1102 are inclined towards the inside of the range hood 1 relative to their proximal edges, thereby forming a concave first smoke guiding cavity 150 and second smoke guiding cavity 160, reducing the possibility of smoke escape. The aforementioned angle c can be 2°, 3°, 5°, 8°, 10°, etc., and is not limited here.

[0060] See Figure 9 , Figure 9 yes Figure 4In a cross-sectional view along the AA direction, the plane where the fairing 110 connects to the housing 20 is the mating surface, with the proximal edge parallel to the mating surface, meaning the connecting plate 1103 is parallel to the mating surface. In other embodiments, the proximal edge has a vertex intersecting the upper edge 1107 and a base point intersecting the lower edge 1108. The proximal edge slopes towards the mating surface along the direction from the base point to the vertex. The connecting plate 1103 has a top edge near the upper edge 1107 and a bottom edge near the lower edge 1108. The connecting plate 1103 slopes towards the mating surface along the direction from the bottom edge to the top edge. That is, the proximal edge and the connecting plate 1103 have a certain angle with the second direction Y. The vertex of the proximal edge is relatively close to the upper edge 1107. The bottom point is tilted towards the outside of the range hood 1, which shortens the distance between the upper middle part of the first air inlet 130 and the second air inlet 140 and the double stove, and also shortens the distance between the lower middle part of the first air inlet 130 and the second air inlet 140 and the fan assembly 20, making the negative pressure diffusion in the middle of the smoke collection assembly 10 more uniform. At the same time, the tilted near edge and the connecting plate 1103 make the condensed oil slide more smoothly from the top edge of the connecting plate 1103 to the bottom edge, until it flows into the oil cup 50.

[0061] See also Figure 9 In one embodiment, the distal edge is parallel to the mating surface. In other embodiments, the distal edge has an upper endpoint intersecting the upper edge 1107 and a lower endpoint intersecting the lower edge 1108. The distal edges of the first air vent plate 1101 and the second air vent plate 1102 are inclined towards the mating surface along the direction from the lower endpoint to the upper endpoint. That is, the distal edges of the first air vent plate 1101 and the second air vent plate 1102 have a certain angle with the second direction Y. The upper part of the middle of the first air vent plate 1101 and the second air vent plate 1102 is inclined towards the outside of the range hood 1 compared to the lower part of the middle. In this way, the distance between the upper sides of the smoke collection assembly 10 in the first direction X and the dual stove can be shortened, and the smoke collection effect of the upper sides of the smoke collection assembly 10 can be improved.

[0062] This application also provides a range hood 1, which includes the aforementioned smoke collection assembly 10, fan assembly 30, housing 20, and opening / closing plate 40. The housing 20 forms a fan channel and a smoke inlet channel that are connected to each other, and is provided with an installation port 210 that communicates with the smoke inlet channel. The smoke collection assembly 10 is connected to the housing 20 and installed at the installation port 210. The opening / closing plate 40 is rotatably connected to the housing 20 and is used to open or close the smoke collection assembly 10. The fan assembly 30 is installed in the fan channel. Oil fumes enter the smoke inlet channel through the first air inlet 130 and the second air inlet 140, and are absorbed and discharged when they reach the fan assembly 30 in the fan channel.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A smoke collection assembly, disposed at the mounting opening of a range hood housing, characterized in that, include: The air deflector includes a first air vent plate and a second air vent plate arranged adjacent to each other in a first direction. The first air vent plate and the second air vent plate include proximal edges that are close to each other and distal edges that are far from each other. The two proximal edges are connected together, and the two distal edges are respectively connected to the housing. The first air vent plate and the second air vent plate are inclined towards the inside of the housing along the direction from the proximal edge to the distal edge. The first air inlet and the second air inlet are respectively opened on the first air vent plate and the second air vent plate, and the opening area of ​​the first air inlet and the second air inlet gradually decreases along the direction from the proximal edge to the distal edge.

2. The smoke collection assembly according to claim 1, characterized in that, Also includes: An oil mesh is disposed within the first air inlet and the second air inlet, and is matched with the first air inlet and the second air inlet. The oil mesh has a plurality of mesh holes, and the mesh hole opening area near the far edge of the oil mesh is larger than the mesh hole opening area near the near edge of the oil mesh.

3. The smoke collection assembly according to claim 1, characterized in that, The smoke collection assembly has a length along a first direction and a width along a second direction. The width of the first air vent plate and the second air vent plate gradually decreases along the direction from the proximal edge to the distal edge, wherein the width ratio of the distal edge to the proximal edge is 0.45 to 0.

75.

4. The smoke collection assembly according to claim 1, characterized in that, Both the first air vent plate and the second air vent plate include an upper edge and a lower edge connecting the near edge and the far edge. The near edge, the far edge, the upper edge, and the lower edge define the shape of the first air vent plate and the second air vent plate, wherein the angle between the near edge and the upper edge is in the range of 80° to 85°.

5. The smoke collection assembly according to claim 4, characterized in that, The angle between the proximal edge and the lower edge ranges from 80° to 85°.

6. The smoke collection assembly according to claim 1, characterized in that, The plane where the fairing connects to the housing is the mating surface, and the ratio of the distance from the proximal edge to the mating surface to the distance from the distal edge to the mating surface is 0.35 to 0.

65.

7. The smoke collection assembly according to claim 4, characterized in that, The angle between the upper edge and the mating surface is 1° to 11°.

8. The smoke collection assembly according to claim 4, characterized in that, The plane where the air guide is connected to the housing is the mating surface, and the proximal edge is parallel to the mating surface; Alternatively, the proximal edge has a vertex that intersects the upper edge and a base that intersects the lower edge, and the proximal edge slopes toward the mating surface along the direction from the base to the vertex.

9. The smoke collection assembly according to claim 8, characterized in that, The distal edge is parallel to the mating surface; Alternatively, the distal edge has an upper endpoint intersecting the upper edge and a lower endpoint intersecting the lower edge, and the distal edge slopes toward the mating surface along the direction from the lower endpoint to the upper endpoint.

10. The smoke collection assembly according to claim 1, characterized in that, The air deflector includes a side plate, an upper plate, and a lower plate. The distal edges of the first air vent plate and the second air vent plate are respectively connected to the side plate. The upper plate and the lower plate are located above and below the first air vent plate and the second air vent plate, respectively.

11. The smoke collection assembly according to claim 10, characterized in that, Both the first air vent plate and the second air vent plate include an upper edge and a lower edge connecting the near edge and the far edge. The upper edges of the first air vent plate and the second air vent plate are respectively connected to the upper plate, and the lower edges of the first air vent plate and the second air vent plate are respectively connected to the lower plate.

12. A range hood 1, characterized in that, Includes the smoke collection assembly and housing as described in any one of claims 1-11; The casing has a connected fan channel and a smoke inlet channel, and is provided with an installation port that communicates with the smoke inlet channel. The smoke collection assembly is connected to the casing and installed at the installation port.

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