Exhaust fume collecting hood and oil fume suction device

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses an exhaust fume collecting hood and an oil fume suction device, an oil guide shielding part is obliquely arranged downwards from front to back, so that liquid drops falling on the upper surface of the oil guide shielding part can flow backwards under the flow guide action of the oil guide shielding part; the oil guide shielding part and the edge of the corresponding first smoke inlet hole form the edge of one end of the second smoke inlet hole, and other edges of the oil guide shielding part surround the periphery of the corresponding first smoke inlet hole and are connected with the oil net in a sealing manner, so that the probability that oil stains falling on the upper surface of the oil guide shielding part fall into the first smoke inlet hole can be reduced. The oil guide shielding parts have the effect of shielding the corresponding first smoke inlet holes, when the noise radiated in the cover body is radiated to the oil guide shielding parts, the noise is reflected under the effect of the oil guide shielding parts, the effect that the noise in the cover body is radiated outwards through the first smoke inlet holes is greatly reduced, and therefore the noise of the oil smoke suction device is effectively reduced, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a fume hood and a fume extraction device. Background Technology

[0002] The working principle of the fume extraction device is as follows: when the fan is working, the oil fumes enter the smoke inlet channel through the air inlet under the suction force generated by the fan, then enter the air box, and finally are discharged into the public smoke exhaust pipe through the exhaust pipe.

[0003] The air inlet of the range hood is equipped with a filter screen to filter oil droplets, water mist, and other substances in the cooking fumes, reducing the amount of oil droplets and water mist entering the fume extraction device.

[0004] After prolonged use, grease accumulates inside the range hood. In actual use, it has been found that some of the grease accumulated inside the range hood drips onto the filter screen, and sometimes the dripping oil droplets pass through the holes in the filter screen and drip directly onto the stovetop or food in the pot, seriously affecting the user experience. Utility Model Content

[0005] One of the technical problems solved by this utility model is to provide a smoke collection hood that can guide the oil stains dripping down the inner wall of the hood onto the oil mesh, reduce the possibility of the oil stains passing through the smoke inlet hole, and improve the user experience.

[0006] The second technical problem solved by this utility model is to provide an oil fume extraction device that reduces the possibility of oil stains passing downward through the first smoke inlet, thereby improving the user experience.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] The smoke hood includes a hood body with an air inlet and an oil mesh located at and covering the air inlet. The oil mesh has a plurality of first smoke inlet holes. Each first smoke inlet hole is provided with an oil guiding and blocking part corresponding to it. The oil guiding and blocking parts are inclined downward from front to back.

[0009] The oil guide shielding part has one edge along the left and right direction as the first edge. In the vertical direction, the first edge and the corresponding edge of the first smoke inlet hole form a second smoke inlet hole that communicates with the first smoke inlet hole. The other edges of the oil guide shielding part surround the outer periphery of the corresponding first smoke inlet hole and are sealed to the oil mesh.

[0010] The smoke hood described in this utility model has the following advantages compared with the prior art:

[0011] As the fumes rise, they enter the hood body through the first smoke inlet hole on the oil mesh. When the fumes rise above the oil mesh and condense into droplets such as oil or water, they will drip onto the oil guide shield. The oil guide shield will prevent the droplets from passing through the first smoke inlet hole and dripping onto the stove surface.

[0012] Because the oil guiding shield is inclined downward from front to back, the droplets falling on the upper surface of the oil guiding shield will flow backward under the guiding effect of the oil guiding shield. In addition to the edge of the oil guiding shield forming the second smoke inlet with the edge of the corresponding first smoke inlet, the other edges of the oil guiding shield surround the outer periphery of the corresponding first smoke inlet and are sealed to the oil mesh, which greatly reduces the probability of oil stains falling on the upper surface of the oil guiding shield falling into the first smoke inlet.

[0013] Because the oil-guiding shield is located above the corresponding first smoke inlet, and only the first edge of the oil-guiding shield forms a second smoke inlet with the corresponding first smoke inlet in the vertical direction, while the other edges of the oil-guiding shield surround the outer periphery of the corresponding first smoke inlet and are sealed to the oil mesh, the oil-guiding shield has the function of shielding the corresponding first smoke inlet. When the noise radiated from inside the cover body reaches the oil-guiding shield, it will be reflected by the oil-guiding shield, greatly reducing the effect of the noise inside the cover body radiating outward through the first smoke inlet, thereby effectively reducing the noise of the fume extraction device and improving the user experience.

[0014] In one embodiment, the oil mesh is inclined downward from left to right, or inclined downward from right to left;

[0015] The other edge of the oil-guiding shielding part along the left-right direction is the second edge, and along the left-right direction, the first edge is closer to the lower end of the oil mesh than the second edge.

[0016] In one embodiment, the oil mesh is provided with at least two, at least one adjacent two oil meshes are connected along the higher end in the left-right direction to form a V-shaped structure with the opening facing downward, or at least one adjacent two oil meshes are connected along the lower end in the left-right direction to form a V-shaped structure with the opening facing upward.

[0017] In one embodiment, the oil mesh is provided in at least two pairs, and the at least two pairs of oil mesh are distributed sequentially along the left-right direction. Each pair of oil mesh is connected at the higher end along the left-right direction to form a V-shaped structure with the opening facing downward.

[0018] In one embodiment, the oil mesh is inclined downward from front to back, and the angle between the oil mesh and the horizontal plane is α, where 5°≤α≤60° when viewed from the left and right direction.

[0019] And / or, from a perspective along the front-back direction, the angle between the oil screen and the horizontal plane is β, 5°≤β≤45°;

[0020] And / or, the included angle between the two oil meshes forming the downward-facing V-shaped structure is γ, 90°<γ≤170°.

[0021] In one embodiment, the orthographic projection of the oil guide shield in the vertical direction is a first projection, and the orthographic projection of the first smoke inlet corresponding to the oil guide shield in the vertical direction is a second projection, with the second projection located within the first projection.

[0022] In one embodiment, the oil-guiding shield is integrally formed with the oil mesh.

[0023] In one embodiment, the upper surface of the oil-guiding shield is a plane.

[0024] In one embodiment, the upper surface of the oil guiding shield is formed with an upward-facing V-shaped groove, and the rear end of the V-shaped groove extends through the rear end face of the oil guiding shield in the front-back direction.

[0025] The second technical problem mentioned above is solved by the following technical solution:

[0026] This utility model also provides a fume extraction device, including the fume collection hood provided in any of the above embodiments.

[0027] Compared with the prior art, the oil fume extraction device of this utility model has the following advantages:

[0028] The fume extraction device provided by this utility model, by employing the aforementioned fume collection hood, uses an oil-guiding shield to prevent droplets from passing downwards through the first smoke inlet. Furthermore, the oil-guiding shield guides droplets falling onto its upper surface backwards, facilitating their entry into the oil cup. This significantly reduces the probability of oil stains falling onto the upper surface of the oil-guiding shield into the first smoke inlet, thus improving the user experience. Moreover, the oil-guiding shield also blocks noise radiating from the hood body to the corresponding first smoke inlet. When noise radiated from inside the hood body reaches the oil-guiding shield, it is reflected by the shield, greatly reducing the noise radiated outwards through the first smoke inlet, thereby effectively reducing the noise of the fume extraction device and improving the user experience. Attached Figure Description

[0029] Figure 1 This is a front view of the fume extraction device provided in this embodiment of the utility model;

[0030] Figure 2 This is a first-view cross-sectional view of the fume extraction device provided in this embodiment of the utility model;

[0031] Figure 3 This is a rear view of the fume extraction device provided in this embodiment of the utility model after removing part of its structure;

[0032] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle;

[0033] Figure 5 This is a bottom view of the fume extraction device provided in this embodiment of the utility model;

[0034] Figure 6 This is a schematic diagram of the structure of the smoke collection plate integrated with the oil mesh provided in this embodiment of the utility model;

[0035] Figure 7 yes Figure 6 A magnified view of a portion of point B in the middle.

[0036] In the picture:

[0037] 1. Cover body; 11. Smoke collection plate; 111. Air inlet;

[0038] 2. Oil mesh; 21. First smoke inlet; 22. Oil guide shield; 221. First edge; 222. Second edge; 23. Second smoke inlet. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0041] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] This utility model provides a fume hood and a fume extraction device including the fume hood, which can guide the oil stains dripping down the inner wall of the hood onto the oil screen, reducing the possibility of oil stains passing through the first smoke inlet hole and improving the user experience. It should be noted that the fume extraction device can be a range hood, integrated stove, all-in-one machine, etc. The following uses a range hood as an example. Figures 1 to 7 In this range hood, there is a control panel. The side where the control panel is located is the front side of the range hood, and the side of the range hood away from the control panel is the rear side of the range hood. When the user stands facing the control panel, the user's left and right hands are the left and right directions of the range hood, and the front-back, left-right and vertical directions are perpendicular to each other.

[0044] like Figures 1 to 7 As shown, the smoke collection hood includes a hood body 1 with an air inlet 111 and an oil mesh 2 located at and covering the air inlet 111. The oil mesh 2 has multiple first smoke inlet holes 21. Each first smoke inlet hole 21 is provided with a corresponding oil guiding shield 22, which is inclined downward from front to back. The oil guiding shield 22 is located above the corresponding first smoke inlet hole 21. One edge of the oil guiding shield 22 in the left-right direction is the first edge 221. In the vertical direction, the first edge 221 and the edge of the corresponding first smoke inlet hole 21 form a second smoke inlet hole 23 that communicates with the first smoke inlet hole 21. The other edges of the oil guiding shield 22 surround the outer periphery of the corresponding first smoke inlet hole 21 and are sealed to the oil mesh 2.

[0045] During the process of rising oil fumes, the oil fumes enter the hood body 1 through the first smoke inlet 21 and the second smoke inlet 23 on the oil mesh 2. When the oil fumes rising above the oil mesh 2 condense into droplets such as oil droplets and water droplets and drip down, they will drip onto the upper surface of the oil guiding and blocking part 22. The oil guiding and blocking part 22 will prevent the droplets from passing down through the first smoke inlet 21 and dripping onto the stove surface.

[0046] Since the oil-guiding shielding part 22, in addition to forming the first edge 221 of the second smoke inlet 23 with the edge of the corresponding first smoke inlet 21, has other edges surrounding the outer periphery of the corresponding first smoke inlet 21 and sealingly connected with the oil mesh 2, and the oil-guiding shielding part 22 is located above the corresponding first smoke inlet 21, the oil-guiding shielding part 22 has the function of shielding the corresponding first smoke inlet 21. The dripping liquid will drip onto the oil-guiding shielding part 22 and is not likely to fall into the first smoke inlet 21. Moreover, the oil-guiding shielding part 22 is inclined downward from front to back, so that the liquid droplets falling on the upper surface of the oil-guiding shielding part 22 will flow backward under the guiding effect of the oil-guiding shielding part 22, which greatly reduces the probability of the oil stains falling on the upper surface of the oil-guiding shielding part 22 falling into the first smoke inlet 21.

[0047] Since the oil-guiding shielding part 22 is located above the corresponding first smoke inlet hole 21, and only the first edge 221 of the oil-guiding shielding part 22 is spaced apart from the corresponding first smoke inlet hole 21 to form a second smoke inlet hole 23, and the other edges of the oil-guiding shielding part 22 surround the outer periphery of the corresponding first smoke inlet hole 21 and are sealed to the oil mesh 2, the oil-guiding shielding part 22 has the function of shielding the corresponding first smoke inlet hole 21. When the noise radiated inside the cover body 1 is radiated to the oil-guiding shielding part 22, it will be reflected under the action of the oil-guiding shielding part 22, which greatly reduces the effect of the noise inside the cover body 1 radiating outward through the first smoke inlet hole 21, thereby effectively reducing the noise of the fume extraction device and improving the user experience.

[0048] Specifically, such as Figure 4 As shown, the vertical projection of the oil-guiding shield 22 is the first projection, and the vertical projection of the first smoke inlet 21 corresponding to the oil-guiding shield 22 is the second projection. The second projection is at least partially located within the first projection. By using the oil-guiding shield 22 to block the corresponding first smoke inlet 21, droplets dripping downwards inside the cover body 1 will fall onto the upper surface of the oil-guiding shield 22, thereby reducing the probability of droplets dripping downwards inside the cover body 1 entering the first smoke inlet 21. It should be noted that the first projection refers to the projection of the oil-guiding shield 22 in the horizontal plane when viewed from the vertical direction; the second projection refers to the projection of the first smoke inlet 21 corresponding to the oil-guiding shield 22 in the horizontal plane when viewed from the vertical direction.

[0049] In some embodiments, such as Figure 2 As shown, the oil mesh 2 is inclined downward from front to back. Compared with the oil mesh 2 being horizontally set, it can increase the number of first smoke inlet holes 21 to meet the air intake requirements of the fume extraction device; it can also reduce the space occupied by the oil mesh 2 in the front-to-back direction, which is conducive to the miniaturization of the fume extraction device.

[0050] In some embodiments, the angle between the oil mesh 2 and the horizontal plane is α, where 5°≤α≤60°, viewed from the left-right direction. If α is too small, the effect of increasing the air intake of the fume extraction device will be weak; if α is too large, the oil mesh 2 will occupy too much space in the vertical direction. By limiting 5°≤α≤60°, the air intake of the fume extraction device can be increased while reducing the space occupied by the oil mesh 2 in the front-back direction, and at the same time, the space occupied by the oil mesh 2 in the vertical direction can be avoided.

[0051] It should be noted that α can be any angle within the range of 5° or greater and 60° or less. α can be any angle among 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, and 60°.

[0052] For example, from a left-right perspective, the angle between the oil-guiding shield 22 and the horizontal plane is equal to α.

[0053] In some embodiments, such as Figures 3 to 6 As shown, the oil mesh 2 is inclined downwards from left to right, or inclined downwards from right to left, and the other edge of the oil guiding shield 22 along the left-right direction is the second edge 222. Along the left-right direction, the first edge 221 is closer to the lower end of the oil mesh 2 than the second edge 222.

[0054] By tilting the oil mesh 2 downwards from left to right or downwards from right to left, the space occupied by the oil mesh 2 in the left-right direction can be reduced, which is conducive to the miniaturization of the fume extraction device. Moreover, in the left-right direction, the first edge 221 is closer to the lower end of the oil mesh 2 than the second edge 222. That is, the second smoke inlet 23 connected to each first smoke inlet 21 is located on the side of the first smoke inlet 21 closer to the lower end of the oil mesh 2, which can reduce the possibility of droplets falling on the upper surface of the oil mesh 2 entering the first smoke inlet 21.

[0055] Specifically, such as Figure 3 As shown, from a front-to-back perspective, the angle between the oil mesh 2 and the horizontal plane is β, where 5° ≤ β ≤ 45°. If β is too small, the effect of increasing the air intake of the fume extraction device will be weak; if β is too large, the oil mesh 2 will occupy too much space in the vertical direction. By limiting 5° ≤ β ≤ 45°, the air intake of the fume extraction device can be increased while reducing the space occupied by the oil mesh 2 in the front-to-back direction, and at the same time, the space occupied by the oil mesh 2 in the vertical direction can be avoided.

[0056] It should be noted that β can be any angle within the range of 5° or greater and 45° or less. β can be any angle among 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, and 45°.

[0057] In some embodiments, such as Figure 6 and Figure 7 As shown, the oil guiding shield 22 and the oil mesh 2 are integrally formed. This configuration simplifies the processing of the oil guiding shield 22, increases processing costs, reduces processing efficiency, and reduces the number of parts.

[0058] Specifically, the edge of the settling groove formed by stamping the oil mesh 2 is torn to form an oil guiding shield 22, such that only one edge of the oil guiding shield 22 near the second smoke inlet 23 is separated from the corresponding first smoke inlet 21, while the other edges of the oil guiding shield 22 are in contact with the inner wall of the corresponding first smoke inlet 21. For the oil guiding shield 22 formed by the above-mentioned stamping and tearing method, the second projection portion is located within the first projection.

[0059] For example, the first smoke inlet 21 is an elongated hole extending in the front-to-back direction, and the multiple elongated holes on each oil mesh 2 are distributed sequentially at intervals in the left-to-right direction, so that the oil mesh 2 with the above-mentioned oil guiding shield 22 forms a louver-like structure.

[0060] The first smoke inlet 21 has a front inner wall, a rear inner wall, a left inner wall, and a right inner wall. For the oil-guiding shield 22 formed by the aforementioned stamping and tearing method, the front inner wall is connected to the front wall of the corresponding oil-guiding shield 22, and the rear inner wall is connected to the rear wall of the corresponding oil-guiding shield 22. When the oil mesh 2 is inclined downwards from left to right, the left inner wall is connected to the second edge 222 of the corresponding oil-guiding shield 22, and the right inner wall is spaced apart from the first edge 221 of the corresponding oil-guiding shield 22 to form a second smoke inlet 23. When the oil mesh 2 is inclined downwards from right to left, the left inner wall is spaced apart from the first edge 221 of the corresponding oil-guiding shield 22 to form a second smoke inlet 23, and the right inner wall is connected to the second edge 222 of the corresponding oil-guiding shield 22.

[0061] In other embodiments, the second projection is located within the first projection. Specifically, the oil guiding shield 22 is welded and fixed to the upper surface of the oil mesh 2. By using a large-area oil guiding shield 22, the oil guiding shield 22 completely blocks the corresponding first smoke inlet 21 while forming the second smoke inlet 23. It should be noted that, while ensuring the second projection is located within the first projection, the first projection and the second projection can be set to coincide, or the area of ​​the first projection can be set to be larger than the area of ​​the second projection.

[0062] In some embodiments, such as Figure 3 and Figure 4 As shown, the upper surface of the oil guiding shield 22 is a plane, and the upper surface of the oil guiding shield 22 forms a flow guiding surface, which facilitates the flow guiding of droplets falling on the flow guiding surface to the rear of the oil guiding shield 22 under the flow guiding effect of the flow guiding surface, and then enters the oil cup through the flow channel inside the cover body 1.

[0063] For example, the guide surface is parallel to the left and right direction, and the guide surface is only inclined downward from front to back, which reduces the possibility of droplets falling on the guide surface flowing to the left and right sides, so that the droplets falling on the guide surface flow backward as much as possible, shortening the path of the droplets to the oil cup.

[0064] As an alternative, the upper surface of the oil-guiding shield 22 is formed with an upward-facing V-shaped groove, the rear end of which extends through to the rear end face of the oil-guiding shield 22 in the front-back direction. This configuration allows droplets falling into the V-shaped groove to flow backward under the guidance of the inner wall of the V-shaped groove, and then enter the oil cup through the flow channel inside the cover body 1. For example, the rear end of the V-shaped groove extends through to the rear end face of the oil-guiding shield 22 in the front-back direction, and the front end extends through to the front end face of the oil-guiding shield 22 in the front-back direction. The aforementioned V-shaped groove can be formed by stamping the upper surface of the oil-guiding shield 22.

[0065] It should be noted that the V-shaped groove is formed on the upper surface of the oil guiding shield 22. Except for the first edge 221 near the lower end of the oil mesh 2, the other edges of the oil guiding shield 22 are still in contact with the inner wall of the corresponding first smoke inlet 21. In other words, the opening of the V-shaped groove does not affect the fact that only the first edge 221 of the oil guiding shield 22 is spaced apart from the first smoke inlet 21 to form the second smoke inlet 23, and the other edges of the oil guiding shield 22 surround the outer periphery of the corresponding first smoke inlet 21 and are sealed to the oil mesh 2.

[0066] It should be noted that the oil flow path from the rear end of the oil mesh 2 to the oil cup is existing technology in this field and will not be described in detail here.

[0067] In some embodiments, such as Figures 5 to 7 As shown, the oil mesh 2 is provided with at least two, at least one adjacent two oil meshes 2 are connected at their higher ends in the left-right direction to form a V-shaped structure with the opening facing downwards, and at least one adjacent two oil meshes 2 are connected at their lower ends in the left-right direction to form a V-shaped structure with the opening facing upwards.

[0068] Specifically, the oil mesh 2 has at least two pairs, and the at least two pairs of oil mesh 2 are distributed sequentially in the left-right direction. For example, there are four oil mesh 2, and the four oil mesh 2 are distributed sequentially in the left-right direction. The four oil mesh 2 are divided into two pairs, thus forming two downward-facing V-shaped structures. The inner cavity of the V-shaped structure forms a smoke-collecting cavity, which helps to increase the smoke-collecting area of ​​the fume extraction device and improve the smoke extraction effect.

[0069] It should be noted that, for any V-shaped structure with an upward opening, of the two oil meshes 2 forming the V-shaped structure, one oil mesh 2 is inclined downward from left to right, and the other oil mesh 2 is inclined downward from right to left, and the two oil meshes 2 are connected at their lower ends in the left-right direction. For any V-shaped structure with a downward opening, of the two oil meshes 2 forming the V-shaped structure, one oil mesh 2 is inclined downward from left to right, and the other oil mesh 2 is inclined downward from right to left, and the two oil meshes 2 are connected at their higher ends in the left-right direction.

[0070] In some embodiments, such as Figure 3 As shown, the included angle between the two oil meshes 2 forming a downward-facing V-shaped structure is γ, where 90° < γ ≤ 170°. γ is determined based on α and β, and can be any angle within the range of greater than 90° and less than or equal to 170°. γ can be any angle selected from 95°, 100°, 105°, 110°, 115°, 120°, 125°, 130°, 135°, 140°, 145°, 150°, 155°, 160°, 165°, and 170°.

[0071] In some embodiments, such as Figure 1 and Figure 6 As shown, the hood body 1 includes a smoke collection plate 11, an air inlet 111 is opened on the smoke collection plate 11, and each oil filter 2 is integrally formed with the smoke collection plate 11 and located above the smoke collection plate 11. Adjacent oil filters 2 are integrally formed. This arrangement simplifies the installation of the oil filters 2, eliminating the need for additional parts to install the oil filters 2 to the smoke collection plate 11, and improving the assembly efficiency of the fume extraction device.

[0072] It should be noted that the smoke collecting plate 11 is inclined downward from front to back. From the perspective of left and right, the angle between the smoke collecting plate 11 and the horizontal plane is equal to α. The droplets falling into the upper surface of the smoke collecting plate 11 inside the cover body 1 can flow to the oil cup under the guiding effect of the upper surface of the smoke collecting plate 11.

[0073] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0074] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A smoke collection hood, characterized in that, The device includes a cover body (1) with an air inlet (111) and an oil mesh (2) located at and covering the air inlet (111). The oil mesh (2) has a plurality of first smoke inlet holes (21). Each first smoke inlet hole (21) is provided with an oil guiding shield (22) corresponding to it. The oil guiding shield (22) is inclined downward from front to back. The oil guide shield (22) is located above the corresponding first smoke inlet hole (21). One edge of the oil guide shield (22) in the left-right direction is the first edge (221). In the vertical direction, the first edge (221) and the edge of the corresponding first smoke inlet hole (21) form a second smoke inlet hole (23) that communicates with the first smoke inlet hole (21). The other edges of the oil guide shield (22) surround the outer periphery of the corresponding first smoke inlet hole (21) and are sealed to the oil mesh (2).

2. The smoke collection hood according to claim 1, characterized in that, The oil mesh (2) is inclined downward from left to right or from right to left; The other edge of the oil guide shield (22) along the left and right direction is the second edge (222). Along the left and right direction, the first edge (221) is closer to the lower end of the oil mesh (2) than the second edge (222).

3. The smoke collection hood according to claim 2, characterized in that, The oil mesh (2) is provided with at least two, at least one of the two adjacent oil meshes (2) are connected at the higher end along the left-right direction to form a V-shaped structure with the opening facing downward, or at least one of the two adjacent oil meshes (2) are connected at the lower end along the left-right direction to form a V-shaped structure with the opening facing upward.

4. The smoke collection hood according to claim 3, characterized in that, The oil mesh (2) is provided with at least two pairs, and the at least two pairs of oil mesh (2) are distributed sequentially in the left and right direction. Each pair of oil mesh (2) is connected at the higher end in the left and right direction to form a V-shaped structure with the opening facing downward.

5. The smoke collection hood according to claim 3, characterized in that, The oil mesh (2) is inclined downward from front to back. From the perspective of the left and right directions, the angle between the oil mesh (2) and the horizontal plane is α, 5°≤α≤60°; And / or, from the perspective of the front-back direction, the angle between the oil mesh (2) and the horizontal plane is β, 5°≤β≤45°; And / or, the included angle between the two oil meshes (2) forming the downward-facing V-shaped structure is γ, 90°<γ≤170°.

6. The smoke hood according to any one of claims 1 to 5, characterized in that, The vertical projection of the oil guide shield (22) is the first projection, and the vertical projection of the first smoke inlet (21) corresponding to the oil guide shield (22) is the second projection, with the second projection located within the first projection.

7. The smoke hood according to any one of claims 1 to 5, characterized in that, The oil guide shield (22) is integrally formed with the oil mesh (2).

8. The smoke hood according to any one of claims 1 to 5, characterized in that, The upper surface of the oil-guiding shield (22) is a plane.

9. The smoke hood according to any one of claims 1 to 5, characterized in that, The upper surface of the oil guide shield (22) is formed with an upward-facing V-shaped groove, and the rear end of the V-shaped groove is disposed through the rear end face of the oil guide shield (22) in the front-back direction.

10. A fume extraction device, characterized in that, Includes the smoke hood as described in any one of claims 1 to 9.

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