Smoke collecting assembly and range hood

Abstract

The smoke collecting assembly is arranged at a machine shell installation opening of the smoke exhaust ventilator and comprises a first air opening plate and a second air opening plate, the first air opening plate and the second air opening plate are adjacently arranged in the first direction and comprise near-end edges close to each other and far-end edges far away from each other, and the first air opening plate and the second air opening plate are arranged in the first direction. The two near-end edges are connected, the two far-end edges are connected with the machine shell, and the first air opening plate and the second air opening plate incline towards the inner side of the machine shell in the direction from the near-end edges to the far-end edges. The first air inlet and the second air inlet are formed in the first air opening plate and the second air opening plate respectively, and the opening area of the first air inlet and the opening area of the second air inlet are gradually decreased in the direction from the near-end edge to the far-end edge. By adopting the scheme, the smoke suction effect of the left and right air inlets of the range hood can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to a smoke collecting assembly and a range hood. BACKGROUND

[0002] In related technologies, the negative pressure distribution of the side suction type range hood is mainly located in the middle and lower parts of the range hood, and the negative pressure distribution range is relatively narrow. However, the actual cooking appliance 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 double stoves, which results in poor smoke suction effect. SUMMARY

[0003] The present application provides a smoke collecting assembly and a range hood to solve the problem of poor smoke suction effect of the air inlets on the left and right sides of the range hood in related technologies.

[0004] To solve the above technical problems, one technical scheme adopted by the present application is to provide a smoke collecting assembly arranged at a housing mounting port of a range hood, comprising a first air inlet plate and a second air inlet plate, the first air inlet plate and the second air inlet plate are arranged adjacent along a first direction, comprising proximal edges close to each other and distal edges away from each other, two proximal edges are connected, two distal edges are connected with the housing respectively, the first air inlet plate and the second air inlet plate are inclined to the inside of the housing along the direction from the proximal edge to the distal edge; a first air inlet and a second air inlet are respectively arranged on the first air inlet plate and the second air inlet plate, 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.

[0005] The smoke collecting assembly provided by the present application has the following beneficial effects: the middle part of the flow guide cover is outwardly convex, the negative pressure is expanded outwardly by a low-cost method, the smoke suction effect of the middle part of the range hood is improved, the two sides of the smoke collecting assembly are concave compared with the middle part, a temporary storage space is provided for the high-speed flowing smoke gas by the change in depth, the instantaneous large amount of smoke gas is prevented from escaping through the gap of the opening and closing plate after passing through the air inlet, and the air inlet is arranged as a special-shaped air inlet with a large middle part and a small side part, which further accelerates the smoke suction rate on the left and right sides of the range hood.

[0006] In some embodiments, the smoke collecting assembly further comprises an oil screen arranged in the first air inlet and the second air inlet and matched with the first air inlet and the second air inlet, the oil screen is provided with a plurality of mesh holes, and the opening area of the mesh hole close to the distal edge is larger than that of the mesh hole close to the proximal edge.

[0007] In some embodiments, the smoke assembly has a length along a first direction X and a width along a second direction Y, the first air outlet plate and the second air outlet plate gradually decrease in width dimension along a direction from the proximal edge to the distal edge, wherein a ratio of the width dimension of the distal edge to the proximal edge is 0.45-0.75.

[0008] In some embodiments, further comprising: a cowling comprising the first air outlet plate and the second air outlet plate

[0009] In some embodiments, the first air outlet plate and the second air outlet plate each comprise 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 a shape of the air outlet plate, wherein an angle between the proximal edge and the upper edge ranges from 80° to 85°.

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

[0011] In some embodiments, a plane where the cowling connects with the cabinet is a joint surface, a ratio of a distance from the proximal edge to the joint surface to a distance from the distal edge to the joint surface is 0.35-0.65.

[0012] In some embodiments, an angle between the upper edge and the joint surface is 1°-11°.

[0013] In some embodiments, a plane where the cowling connects with the cabinet is a joint surface, the proximal edge is parallel to the joint surface; or the proximal edge has a top point intersecting with the upper edge and a bottom point intersecting with the lower edge, the proximal edge is inclined to the joint surface along a direction from the bottom point to the top point.

[0014] In some embodiments, a plane where the cowling connects with the cabinet is a joint surface, the proximal edge is parallel to the joint surface; or the proximal edge has a top point intersecting with the upper edge and a bottom point intersecting with the lower edge, the proximal edge is inclined to the joint surface along a direction from the bottom point to the top point.

[0015] In some embodiments, the cowling comprises a side plate, an upper plate and a lower plate, the distal edges of the first air outlet plate and the second air outlet plate are connected with the side plate respectively, the upper plate and the lower plate are located at upper side and lower side of the first air outlet plate and the second air outlet plate respectively.

[0016] In some embodiments, the first air port plate and the second air port plate each include an upper edge and a lower edge connecting the proximal edge and the distal edge, the upper edges of the first air port plate and the second air port plate are connected with the upper plate respectively, and the lower edges of the first air port plate and the second air port plate are connected with the lower plate respectively.

[0017] The beneficial effects of the present application are: different from the prior art, the present application provides a smoke collecting assembly, the middle part of the flow guide cover is outwardly convex, the negative pressure range is expanded by a simple method, and the air suction effect of the middle part is improved. In addition, the two sides of the flow guide cover are recessed relative to the middle part, providing temporary storage space for the rapidly flowing flue gas, preventing leakage from the gap between the opening and closing plates due to failure to absorb in time. And the inlet is designed in a special shape with a large middle part and small side parts, further accelerating the smoke suction rate on both sides of the range hood.

[0018] The technical problem to be solved by the present application is the poor smoke suction effect of the left and right inlet of the range hood.

[0019] To solve the above technical problems, another technical solution adopted by the present application is to provide a range hood, which comprises the smoke collecting assembly of any one of the above embodiments and a shell; the shell forms a fan channel and a smoke inlet channel in communication, and is provided with a mounting opening in communication with the smoke inlet channel; the smoke collecting assembly is connected with the shell and mounted at the mounting opening.

[0020] The beneficial effects of the range hood of the present application are the same as those of the above smoke collecting assembly, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a three-dimensional structure schematic diagram of the opening and closing plate of the range hood when it is closed, provided by the embodiments of the present application;

[0023] Figure 2 is a sectional view of the range hood provided by the present application;

[0024] Figure 3 is a three-dimensional structure schematic diagram of the opening and closing plate of the range hood when it is opened, provided by the embodiments of the present application;

[0025] Figure 4 is a front view of the smoke collecting assembly provided by the embodiments of the present application;

[0026] Figure 5 is a top view of a smoke collecting assembly provided by an embodiment of the present application;

[0027] Figure 6 is a flow schematic of condensate oil of a smoke collecting assembly provided by an embodiment of the present application;

[0028] Figure 7 is a schematic of mesh of an oil screen of a smoke collecting assembly provided by an embodiment of the present application;

[0029] Figure 8 is a schematic of mesh of another oil screen of a smoke collecting assembly provided by an embodiment of the present application;

[0030] Figure 9 is Figure 4 is a sectional view along A-A direction.

[0031] Explanation of Reference Signs:

[0032] range hood 1;

[0033] first direction X; second direction Y; third direction Z;

[0034] smoke collecting assembly 10; deflector 110; first air inlet plate 1101; second air inlet plate 1102; connecting plate 1103; side plate 1104; upper plate 1105; lower plate 1106; upper edge 1107; lower edge 1108; oil screen 120; first air inlet 130; second air inlet 140; first smoke guide cavity 150; second smoke guide cavity 160;

[0035] housing 20; mounting port 210;

[0036] fan assembly 30;

[0037] opening and closing plate 40;

[0038] oil cup 50;

[0039] panel 60. DETAILED DESCRIPTION

[0040] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals are used throughout the drawings to refer to the same or like elements or elements having the same or similar functionality. The embodiments described below are exemplary and are merely intended to explain the present application, and are not to be understood as limiting the present application.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0043] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the related art, the negative pressure distribution of the side suction type range hood is mainly located in the middle and lower part of the range hood, and the negative pressure distribution range is relatively narrow, but the actual cooking utensils are located on the left and right sides of the range hood, and the left and right sides of the range hood are far away from the fan and the double stove, resulting in poor smoke suction effect.

[0045] The present application provides a smoke collecting assembly 10 and a range hood 1, please refer to Figures 1 to 3 , Figure 1 is a three-dimensional structure schematic diagram of the opening and closing plate of the range hood provided by the present application when closing; Figure 2 is a sectional view of the range hood provided by the present application; Figure 3 is a three-dimensional structure schematic diagram of the opening and closing plate of the range hood provided by the present application when opening.

[0046] The application provides a smoke collection assembly 10 applied to an oil fume extractor 1, the oil fume extractor 1 comprising a casing 20, the casing 20 being provided with a mounting opening 210, the mounting opening being connected with a fan assembly 30. The fan assembly 30 is driven by a motor to rotate the fan blade, so as to create a negative pressure environment, oil fume entering the casing 20 of the oil fume extractor through the mounting opening 210, the mounting opening 210 being a part of a smoke inlet channel, effectively sucking the oil fume and discharging it to the outdoor. The casing 20 is further provided with a flap 40, the flap 40 being capable of rotating around the casing 20 to open or close the mounting opening 210. When the mounting opening 210 is in a closed state, the surface of the flap 40 is kept in the same plane with the lower panel 60 of the casing 20, so as to realize a flat closing effect.

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

[0048] As Figure 3As shown, the smoke collecting assembly 10 provided by the present application is arranged at the installation opening 210 of the machine shell 20 of the range hood 1, and is used to collect and guide the external oil fume into the range hood 1 when the installation opening 210 is in an open state. The smoke collecting assembly 10 comprises a flow guide cover 110, which comprises two first air inlet plates 1101 and second air inlet plates 1102 arranged adjacent to each other along a first direction X. The first air inlet plates 1101 and the second air inlet plates 1102 comprise proximal edges close to each other and distal edges away from each other. The proximal edges are close to the middle part of the smoke collecting assembly 10 along the first direction X, and the distal edges are close to the two ends of the smoke collecting assembly 10 along the first direction X. The proximal edges of the first air inlet plates 1101 and the second air inlet plates 1102 are connected to each other by a connecting plate 1103. In other embodiments, the proximal edges of the first air inlet plates 1101 and the second air inlet plates 1102 are connected together to form the connecting plate 1103 at the joint of the first air inlet plates 1101 and the second air inlet plates 1102. In other embodiments, the proximal edges of the first air inlet plates 1101 and the second air inlet plates 1102 are connected together to form a connecting convex ridge at the joint of the first air inlet plates 1101 and the second air inlet plates 1102. The connecting plate 1103 or the connecting convex ridge is arranged at the middle part of the flow guide cover 110 and extends along a second direction Y. The connecting plate 1103 or the connecting convex ridge can enhance the structural stability of the entire flow guide cover 110, and ensure that the flow guide cover 110 can maintain the shape unchanged during use of the range hood 1. The distal edges of the first air inlet plates 1101 and the second air inlet plates 1102 are connected to the machine shell 20 respectively. The connecting plate 1103 protrudes outwardly from the distal edges to the outside of the machine shell 20. The first air inlet plates 1101 and the second air inlet plates 1102 extend from the proximal edges to the distal edges in an inclined state, i.e., they are not parallel to the panel 60 of the machine shell 20, but the distal edges of the first air inlet plates 1101 and the second air inlet plates 1102 are inclined inwardly to the inside of the machine shell 20. The inside here refers to the inside of the main body of the machine shell 20. The distal edges of the first air inlet plates 1101 and the second air inlet plates 1102 form the recessed first smoke guide cavity 150 and the second smoke guide cavity 160 with the machine shell 20, which provides a containing space for high-flow-rate oil fume, avoids that a large amount of oil fume escapes from the gap between the opening and closing plate 40 and the machine shell 20 due to not being timely sucked away, and enables the smoke collecting assembly 10 to more efficiently collect the oil fume, thereby improving the overall suction and exhaust effect of the range hood 1.

[0049] Continuing to refer to Figure 3The first air inlet 130 and the second air inlet 140 are gradually reduced in width dimension from the middle of the smoke collection assembly 10 to the two ends in the first direction X, and the opening area is reduced accordingly. According to the principle of aerodynamics, the flow rate of the oil fume can be improved when the oil fume passes through the distal edge of the first air inlet 130 and the second air inlet 140, thereby improving the suction efficiency of the two sides of the range hood 1.

[0050] Referring to Figure 4 and Figure 5 The fairing 110 further includes side plates 1104, an upper plate 1105 and a lower plate 1106. The side plates 1104 are side boundaries of the fairing 110 in the first direction X. The upper plate 1105 and the lower plate 1106 are upper boundaries of the fairing 110 in the second direction Y. The distal edges of the first air inlet plate 1101 and the second air inlet plate 1102 are connected to one side of the two side plates 1104 near the distal edges, respectively. The other side of the two side plates 1104 is connected to the cabinet 20, respectively. The upper plate 1105 and the lower plate 1106 are located on the upper side and the lower side of the first air inlet plate 1101 and the second air inlet plate 1102, respectively. The side plates 1104, the upper plate 1105 and the lower plate 1106 enclose the first smoke guide cavity 150 and the second smoke guide cavity 160 which communicate with the first air inlet 130 and the second air inlet 140. The plane where the fairing 110 is connected to the cabinet 20 is the joint surface. The first smoke guide cavity 150 is a cavity structure formed by the side plates 1104, the upper plate 1105, the lower plate 1106, the first air inlet plate 1101 and the joint surface, which communicates with 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 plates 1104, the upper plate 1105, the lower plate 1106, the second air inlet plate 1102 and the joint surface, which communicates with 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 convex rib.

[0051] Referring to Figure 5 , Figure 5is a top view of the smoke collecting assembly provided by the embodiment of the present application, the overall appearance of the smoke collecting assembly 10 presents an M shape with the middle part outwardly convex and the two sides in the first direction X inwardly concave. The middle part of the smoke collecting assembly 10 is outwardly convex, and the proximal edges of the first air inlet 130 and the second air inlet 140 are relatively close to the fan assembly 30 and the double stove, so that the path of the oil fume before entering the fan assembly 30 is relatively short, and the expansion of the negative pressure area can be realized at a lower cost. Specifically, the outwardly convex structure of the middle part of the smoke collecting assembly 10 can effectively increase the area of the negative pressure area, so that more oil fume is rapidly sucked under the action of negative pressure, the smoke suction efficiency is improved, and the oil fume diffusion is reduced. The two sides of the smoke collecting assembly 10 in the first direction X are relatively far away from the fan assembly 30 and the double stove, so that the negative pressure is relatively small, and the smoke suction effect is naturally not as good as the middle part. In order to make up for this deficiency, the two sides of the smoke collecting assembly 10 are inwardly concave to form the first smoke guiding cavity 150 and the second smoke guiding cavity 160, and the two sides are deepened to provide a containing space for the high flow rate of the smoke gas. On the one hand, the smoke gas can be temporarily stored under the condition of large instantaneous oil fume amount, so as to prevent them from escaping into the kitchen space; on the other hand, the first smoke guiding cavity 150 and the second smoke guiding cavity 160 also provide sufficient time for the first air inlet 130 and the second air inlet 140 to suck away the smoke gas, so as to avoid the escape of the smoke gas from the gap with the opening and closing plate 40 due to the failure to be sucked away in time.

[0052] With reference to the above Figure 4, the air inlet of the whole smoke collecting assembly 10 presents a special-shaped air inlet with a larger middle air inlet and smaller air inlets on both sides. By increasing the air inlet area of the first air inlet 130 and the second air inlet 140 near the middle of the smoke collecting assembly 10, the oil fume released from the double stove can be more directly and quickly captured due to the closer distance between the middle air inlets and the fan assembly 30 and the double stove, and the smoke suction effect is good. In addition, the larger air inlet area allows more smoke to pass at a lower speed, reducing the flow rate of the smoke, which helps to reduce the noise of the whole range hood 1. In contrast, for the air inlets on both sides of the smoke collecting assembly 10 in the first direction X, the smoke suction effect is naturally not as good as that of the air inlets near the middle due to the farther distance from the fan assembly 30 and the double stove. However, since the amount of smoke handled by the air inlets on both sides is relatively small compared to the middle, the design of this area can focus more on improving the smoke suction effect rather than handling a large amount of smoke. Therefore, by providing a containing space for high-flow-rate smoke through the first smoke guide cavity 150 and the second smoke guide cavity 160 on both sides of the smoke collecting assembly 10, the spread of oil fume is prevented. And by reducing the air inlet area of the first air inlet 130 and the second air inlet 140 near both sides of the smoke collecting assembly 10, the airflow speed can be increased, thereby improving the smoke suction effect on both sides of the smoke collecting assembly 10 in the first direction X. The smoke collecting assembly 10 is designed in an M shape with the middle part protruding outward and the sides recessed inward, combined with the larger width size of the middle air inlets and the smaller width size of the air inlets on both sides, through the design of different cavity shapes and the differentiation of air inlet width sizes in different areas, efficient and uniform smoke suction effect is achieved, while avoiding oil fume escape.

[0053] Referring to Figure 7 and Figure 8 In an embodiment, an oil screen 120 with a contour matching the first air inlet 130 and the second air inlet 140 is provided at the first air inlet 130 and the second air inlet 140, which can ensure that the oil screen 120 can tightly fit the first air inlet 130 and the second air inlet 140 after installation, preventing oil fume leakage. The oil screen 120 is connected to the first air inlet plate 1101 and the second air inlet plate 1102 by screws, and in other embodiments, welding or other methods can also be used. The oil screen 120 is provided with a plurality of mesh holes, which can allow oil fume to pass smoothly while intercepting oil particles in the oil fume. To further improve the smoke suction effect, the mesh holes of the oil screen 120 are designed to have irregular aperture sizes, with the mesh holes near the distal edge having a larger opening area than the mesh holes near the proximal edge. The larger opening area of the mesh holes at the distal edge of the smoke collecting assembly 10 is beneficial for smoke flow and reduces resistance, allowing oil fume to pass through the oil screen more quickly, and the smaller opening area of the mesh holes at the proximal edge of the smoke collecting assembly 10 can better intercept oil particles, preventing them from entering the internal fan assembly 30 and reducing cleaning and maintenance costs. The shape of the mesh holes of the oil screen 120 can be circular, hexagonal, diamond-shaped, or strip-shaped, etc.

[0054] Referring to Figure 4, the length of the smoke collecting assembly 10 along the first direction X and the width along the second direction Y, the width dimension of the first air inlet plate 1101 and the second air inlet plate 1102 gradually decreases in the direction from the proximal edge to the distal edge, so that the first air inlet plate 1101 and the second air inlet plate 1102 have a substantially trapezoidal shape, specifically, the width dimension of the distal edge of the first air inlet plate 1101 and the second air inlet plate 1102 is L1, and the width dimension of the proximal edge is L2, in order to further improve the smoke suction rate on both sides of the range hood 1, the ratio of L1 to L2 is between 0.45 and 0.75. The width dimension of the distal edge of the first air inlet plate 1101 and the second air inlet plate 1102 can be reduced by at least 25% relative to the width dimension of the proximal edge, and can be reduced by at most 55%. In this way, not only can the negative pressure in the middle of the smoke collecting assembly 10 be expanded, but also the smoke suction speed on both sides of the smoke collecting assembly 10 in the first direction X can be improved, thereby improving the smoke suction performance. In other embodiments, the ratio of the width dimension of the distal edge to the proximal edge can be 0.5, 0.6, 0.7, etc.

[0055] Referring to Figure 6 , the overall appearance of the smoke collecting assembly 10 presents an M shape with the middle part outwardly convex and the first direction X both sides inwardly concave, the upper plate 1105 is inclined downward along the direction from the proximal edge to the distal edge and substantially presents an inclined triangle, and the lower plate 1106 is inclined downward along the direction from the distal edge to the proximal edge and substantially presents an inclined triangle, the outwardly convex design of the middle part reduces the area of the two inclined surfaces of the upper plate 1105 and the lower plate 1106 of the flow guide cover 110, which can effectively reduce the contact area of the oil fume on the upper plate 1105 and the lower plate 1106, and the formation area of the condensed oil is small, which helps to reduce the accumulation of oil stains, and referring to Figure 6 the condensed oil flow diagram shown by the black arrows, the condensed oil inside the entire cavity can be guided to the middle position at the bottom of the smoke collecting assembly 10 along the flow guide effect of the inclined upper plate 1105, the side plate 1104 and the inclined lower plate 1106, and the condensed oil on the connecting plate 1103 can slide vertically downward along the connecting plate 1103 to the middle position at the bottom of the smoke collecting assembly 10, and then flow downward along the face plate 60 to the oil cup 50, which helps to collect and clean the condensed oil.

[0056] Continuing to refer to Figure 4, the first air outlet plate 1101 and the second air outlet plate 1102 are designed to have a trapezoidal shape, specifically, the first air outlet plate 1101 and the second air outlet plate 1102 each include an upper edge 1107 and a lower edge 1108 connecting a proximal end edge and a distal end edge, the upper edge 1107 of the first air outlet plate 1101 and the second air outlet plate 1102 are connected to the upper plate 1105 respectively, the lower edge 1108 of the first air outlet plate 1101 and the second air outlet plate 1102 are connected to the lower plate 1106 respectively, the proximal end edge, the distal end edge, the upper edge and the lower edge define the shape of the first air outlet plate 1101 and the second air outlet plate 1102, wherein the included angle a between the proximal end edge and the upper edge 1107 ranges from 80° to 85°, and the included angle b between the proximal end edge and the lower edge 1108 ranges from 80° to 85°. By limiting the inclination angle of the upper edge 1107, the condensed oil on the upper plate 1105 flows from the proximal end edge to the distal end edge along the upper plate 1105 until it flows to the lower plate 1106 through the side plate 1104. By limiting the inclination angle of the lower edge 1108, the condensed oil on the lower plate 1106 flows from the distal end edge to the proximal end edge until it is collected at the middle position at the bottom of the smoke collecting assembly 10 and flows downward along the panel 60 to the oil cup 50, so as to ensure that the condensed oil can flow smoothly without dripping or accumulating.

[0057] In an embodiment, the first air outlet plate 1101 and the second air outlet plate 1102 can be isosceles trapezoidal, the included angle a between the proximal end edge and the upper edge 1107 ranges from 80° to 85°, the included angle b between the proximal end edge and the lower edge 1108 ranges from 80° to 85°, and the included angle a is equal to the included angle b. In other embodiments, the first air outlet plate 1101 and the second air outlet plate 1102 can be non-isosceles trapezoidal, the included angle a between the proximal end edge and the upper edge 1107 ranges from 80° to 85°, the included angle b between the proximal end edge and the lower edge 1108 ranges from 80° to 85°, and the included angle a is different from the included angle b.

[0058] Referring to Figure 5The plane where the shroud 110 connects with the casing 20 is the joint surface, which is the joint area of the shroud 110 and the casing 20, and ensures the sealing and stability between the two. In an embodiment, the proximal edges and the distal edges of the first air inlet plate 1101 and the second air inlet plate 1102 are parallel to the joint surface, the distance between the proximal edges of the first air inlet plate 1101 and the second air inlet plate 1102 and the joint surface is L3, the distance between the distal edges of the first air inlet plate 1101 and the second air inlet plate 1102 and the joint surface is L4, and the ratio of L3 to L4 is 0.35-0.65. In another embodiment, the proximal edges and the distal edges of the first air inlet plate 1101 and the second air inlet plate 1102 are not parallel to the joint surface, the distance between the proximal edges of the first air inlet plate 1101 and the second air inlet plate 1102 and the joint surface is L3, the distance between the distal edges of the first air inlet plate 1101 and the second air inlet plate 1102 and the joint surface is L4, and the ratio of L3 to L4 is 0.35-0.65. The overall shape of the smoke collecting assembly 10 is an M-shaped cavity with the outer part convex and the inner part concave, so that the first air inlet plate 1101 and the second air inlet plate 1102 can protrude outward from the extractor hood 1 through the proximal edges, increase the negative pressure, and improve the suction and exhaust effect of the extractor hood 1, and the first air inlet plate 1101 and the second air inlet plate 1102 can be recessed inward from the extractor hood 1 through the distal edges, provide a buffer space for the oil smoke on both sides of the extractor hood 1, and avoid the spread and escape of the oil smoke.

[0059] Continuing to refer to Figure 5 , the included angle c between the upper edges 1107 of the first air inlet plate 1101 and the second air inlet plate 1102 and the joint surface is 1°-11°, and the range of the included angle c is limited so that the first air inlet plate 1101 and the second air inlet plate 1102 are inclined and close to the third direction Z of the extractor hood 1, and the third direction Z is perpendicular to the first direction and the second direction. The distal edges of the first air inlet plate 1101 and the second air inlet plate 1102 are inclined inward from the extractor hood 1 relative to the proximal edges, thereby forming the first smoke guide cavity 150 and the second smoke guide cavity 160 which are concave inward, and reducing the possibility of oil smoke escaping. The above-mentioned included angle c can be 2°, 3°, 5°, 8°, 10°, etc., which is not limited here.

[0060] Referring to Figure 9 , Figure 9 is Figure 4In the sectional view along the A-A direction, the plane where the deflector 110 is connected with the casing 20 is a joint surface, and the proximal edge is parallel to the joint surface, that is, the connecting plate 1103 is parallel to the joint surface. In other embodiments, the proximal edge has a top point intersecting with the upper edge 1107 and a bottom point intersecting with the lower edge 1108, the proximal edge is inclined to the joint surface along the direction from the bottom point to the top point, the connecting plate 1103 has a top edge close to the upper edge 1107 and a bottom edge close to the lower edge 1108, the connecting plate 1103 is inclined to the joint 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, and the top point of the proximal edge is inclined to the outside of the range hood 1 compared with the bottom point. In this way, the distance between the middle part of the first air inlet 130 and the second air inlet 140 and the double cooktops above can be shortened, and the distance between the middle part of the first air inlet 130 and the second air inlet 140 and the fan assembly 30 below can also be shortened, so that the negative pressure in the middle part of the smoke collection assembly 10 is more evenly diffused. Meanwhile, the inclined proximal edge and the connecting plate 1103 make the condensed oil more smoothly slide from the top edge to the bottom edge of the connecting plate 1103 and then flow into the oil cup 50.

[0061] Continuing to refer to Figure 9 In an embodiment, the distal edge is parallel to the joint surface. In other embodiments, the distal edge has an upper end point intersecting with the upper edge 1107 and a lower end point intersecting with the lower edge 1108, and the distal edge of the first air inlet plate 1101 and the second air inlet plate 1102 is inclined to the joint surface along the direction from the lower end point to the upper end point, that is, the distal edge of the first air inlet plate 1101 and the second air inlet plate 1102 has a certain angle with the second direction Y, and the middle part of the first air inlet plate 1101 and the second air inlet plate 1102 above is inclined to the outside of the range hood 1 compared with the middle part below. In this way, the distance between the smoke collection assembly 10 on both sides of the first direction X and the double cooktops above can be shortened, and the smoke suction effect on both sides above of the smoke collection assembly 10 can be improved.

[0062] The present application also provides a range hood 1, which comprises the above-mentioned smoke collection assembly 10, fan assembly 30, casing 20 and opening and closing plate 40. The casing 20 is formed with a fan passage and a smoke inlet passage in communication, and is provided with a mounting opening 210 in communication with the smoke inlet passage, and the smoke collection assembly 10 is connected with the casing 20 and is installed at the mounting opening 210; the opening and closing plate 40 is rotationally connected with the casing 20 and is used for opening or closing the smoke collection assembly 10, the fan assembly 30 is installed in the fan passage, and the oil fume enters the smoke inlet passage through the first air inlet 130 and the second air inlet 140 and is then adsorbed and discharged at the fan assembly 30 in the fan passage.

[0063] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

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

Claims

1. A smoke collecting assembly provided at a housing mounting port of a range hood, characterized in that, The set of components comprises: a first air inlet plate and a second air inlet plate, the first air inlet plate and the second air inlet plate are arranged adjacent along a first direction, comprising proximal edges close to each other and distal edges away from each other, two proximal edges are connected, and two distal edges are connected with the cabinet respectively, the first air inlet plate and the second air inlet plate are inclined to the inside of the cabinet along the direction from the proximal edge to the distal edge; a first air inlet and a second air inlet are respectively arranged on the first air inlet plate and the second air inlet 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 assembly of claim 1, wherein, Further comprising: an oil screen, the oil screen is arranged in the first air inlet and the second air inlet and matches the first air inlet and the second air inlet, the oil screen is provided with a plurality of mesh holes, and the opening area of the mesh hole close to the distal edge is greater than the opening area of the mesh hole close to the proximal edge.

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

75.

4. The smoke assembly of claim 1, wherein, Further comprising: a flow guide cover, the flow guide cover comprises the first air inlet plate and the second air inlet plate.

5. The smoke collecting assembly according to claim 4, wherein the first air inlet plate and the second air inlet plate each comprise an upper edge and a lower edge connecting the proximal edge and the distal edge, and the proximal edge, the distal edge, the upper edge and the lower edge define the shape of the first air inlet plate and the second air inlet plate, and the angle between the proximal edge and the upper edge is 80-85°.

6. The smoke collecting assembly according to claim 5, wherein the angle between the proximal edge and the lower edge is 80-85°.

7. The smoke collecting assembly according to claim 4, wherein the plane where the flow guide cover is connected with the cabinet is a joint surface, and the ratio of the distance from the proximal edge to the joint surface to the distance from the distal edge to the joint surface is 0.35-0.

65.

8. The smoke collecting assembly according to claim 5, wherein the angle between the upper edge and the joint surface is 1-11°.

9. The smoke collecting assembly according to claim 5, wherein the plane where the flow guide cover is connected with the cabinet is a joint surface, and the proximal edge is parallel to the joint surface; or, the proximal edge has a vertex intersecting with the upper edge and a bottom point intersecting with the lower edge, and the proximal edge is inclined to the joint surface along the direction from the bottom point to the vertex.

10. The smoke collecting assembly according to claim 9, wherein the distal edge is parallel to the joint surface. Alternatively, the distal edge has an upper end point intersecting the upper edge and a lower end point intersecting the lower edge, the distal edge being inclined towards the joint surface in a direction from the lower end point to the upper end point.

11. The assembly of claim 4, wherein, the shroud comprises a side plate, an upper plate and a lower plate, the distal edges of the first and second air inlet plates are connected to the side plate respectively, and the upper and lower plates are located at the upper side and lower side of the first and second air inlet plates respectively.

12. The smoke assembly of claim 11, wherein, the first and second air inlet plates each comprise an upper edge and a lower edge connecting the proximal edge and the distal edge, the upper edges of the first and second air inlet plates are connected to the upper plate respectively, and the lower edges of the first and second air inlet plates are connected to the lower plate respectively.

13. A range hood, comprising, a housing connected to the assembly of any one of claims 1-12; and the housing is formed with a fan passage and a smoke inlet passage in communication, and is provided with a mounting opening in communication with the smoke inlet passage, the assembly is connected to the housing and is mounted at the mounting opening.

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