Range hood

Abstract

The application relates to a range hood, comprising: a filter screen; and a smoke guide plate located below the filter screen, the filter screen comprising a circumferential edge, a first section extending downwardly and obliquely from the circumferential edge, and a second section extending further downwardly and obliquely from the first section, a first included angle between the first section and a plane where the circumferential edge is located being greater than a second included angle between the second section and the plane where the circumferential edge is located, a vertical projection of a first edge portion of the circumferential edge connected with the first section on the smoke guide plate being located outside the smoke guide plate, and a vertical projection of a first connecting area between the first section and the second section on the smoke guide plate being located inside the smoke guide plate. Thus, the oil guiding function of the filter screen can be optimized by optimizing the structure of the filter screen, so that the oil accumulated on the filter screen can be smoothly guided to the smoke guide plate and then collected in an oil box, and cannot drip from the filter screen to a cooking bench.

Description

Technical Field

[0001] This application relates to a range hood. Background Technology

[0002] Currently, range hoods, especially top-mounted range hoods, are equipped with filters and baffles. In these models, the filter is typically positioned above the baffle. Grease adhering to and accumulating on the filter is guided along the filter to the baffle, where it is then collected by the baffle and the attached grease tray. For aesthetic purposes, the filter and baffle designs need to complement each other. However, existing filters still have room for improvement in grease diversion, particularly at the connection point between the filter and the range hood cavity, where grease accumulation needs further enhancement. Summary of the Invention

[0003] The purpose of this application is to provide an improved range hood, which in particular includes a filter with an improved structure.

[0004] According to a first aspect of this application, a range hood is provided, the range hood comprising: a filter screen; and a smoke guide plate located below the filter screen, wherein the filter screen includes a circumferential edge, a first segment extending downwardly at an incline from the circumferential edge, and a second segment extending further downwardly at an incline from the first segment, a first angle between the first segment and the plane containing the circumferential edge being greater than a second angle between the second segment and the plane containing the circumferential edge, the vertical projection of the first edge portion of the circumferential edge connected to the first segment relative to the smoke guide plate being located outside the smoke guide plate, and a first connection area between the first segment and the second segment being located inside the smoke guide plate relative to the vertical projection of the first segment relative to the smoke guide plate.

[0005] According to an optional embodiment of this application, the first included angle is greater than or equal to 20°.

[0006] According to an optional embodiment of this application, the second included angle is greater than or equal to 10°.

[0007] According to an alternative embodiment of this application, along the front-rear direction of the range hood, both the first section and the second section are located behind the lowest point of the filter screen relative to the circumferential edge.

[0008] According to an optional embodiment of this application, the filter screen has a rear side plate including the first section and the second section, and a front side plate opposite to the rear side plate. The rear side plate and the front side plate gradually move closer to the smoke guide plate along the vertical direction of the range hood, so that the filter screen is formed in the shape of an inverted roof.

[0009] According to an optional embodiment of this application, the first section is a plate-like structure without mesh.

[0010] According to an optional embodiment of this application, the second section is a plate-like structure with mesh.

[0011] According to an alternative embodiment of this application, the first connection region is formed as a connection edge.

[0012] According to an alternative embodiment of this application, the filter screen has a recessed portion that is away from the first segment and connects with the second segment to form a second connecting region, the second connecting region defining the lowest point of the second segment and the recessed portion relative to the circumferential edge.

[0013] According to an optional embodiment of this application, the smoke guide plate has a central air inlet, and the recess is located directly above the central air inlet and recessed in a direction away from the central air inlet.

[0014] According to an optional embodiment of this application, the recess is a plate-like structure without mesh.

[0015] According to an alternative embodiment of this application, the recess has a V-shaped cross-section with an opening facing the smoke guide plate.

[0016] According to an alternative embodiment of this application, the second connection region is formed as a connection edge.

[0017] According to an optional embodiment of this application, the filter screen has side surfaces located on both sides of the first section and the second section, the side surfaces being plate-like structures with mesh openings, and the shape of the mesh openings being adapted to the V-shaped contour of the concave portion.

[0018] According to an optional embodiment of this application, the filter screen further has a third section extending downwardly at an angle relative to the circumferential edge, the third section being arranged opposite to the first section and the second section along the front-back direction of the range hood, wherein the second edge portion where the circumferential edge connects to the third section has its vertical projection relative to the smoke guide plate located inside the smoke guide plate.

[0019] According to an optional embodiment of this application, the third section is a plate-like structure with mesh.

[0020] According to an alternative embodiment of this application, the third section is located in front of the lowest point of the filter relative to the circumferential edge.

[0021] According to an optional embodiment of this application, the filter screen further includes a connecting protrusion disposed on the circumferential edge, the filter screen being inserted into the smoke collection chamber wall of the range hood through the connecting protrusion, the connecting protrusion protruding outward from the circumferential edge, and the angle between the connecting protrusion and the plane containing the circumferential edge being the same as the first angle.

[0022] Through certain embodiments of this application, the grease guiding function of the filter can be optimized by optimizing the structure of the filter, thereby guiding all the grease accumulated on the filter, especially the grease accumulated at the connection between the filter and the range hood cavity, to the smoke guide plate to the maximum extent, so that the range hood can have a better grease collection effect and improve the user experience.

[0023] It is worth noting that the advantages and beneficial effects of this application are not limited to those mentioned above. Those skilled in the art can understand other advantages and beneficial effects not mentioned in this application through the following detailed embodiments and claims. Attached Figure Description

[0024] The principles, features, and advantages of this application will be better understood below with reference to the accompanying drawings. In the drawings:

[0025] Figure 1 A schematic diagram of the structure of a range hood according to an exemplary embodiment of this application is shown;

[0026] Figure 2 A vertical sectional view of a range hood according to an exemplary embodiment of this application is shown;

[0027] Figure 3 A schematic diagram of the structure of a range hood filter screen according to an exemplary embodiment of this application is shown;

[0028] Figure 4 A cross-sectional view of the filter and oil guide plate of a range hood according to an exemplary embodiment of this application is shown; and

[0029] Figure 5 Another cross-sectional view of the filter and grease guide plate of a range hood according to an exemplary embodiment of the present application is shown, illustrating the possible flow direction and flow path of grease on different sections of the filter.

[0030] List of reference numerals

[0031] 100 range hood

[0032] 1. Filter

[0033] 11 Circumferential edge

[0034] 111 First edge section

[0035] 112 Second edge section

[0036] 113 Third edge section

[0037] 114 Connecting protrusion

[0038] 12 First Section

[0039] 13 Second Section

[0040] 14 First Connection Area

[0041] 15. Concave portion

[0042] 16 Second Connection Area

[0043] 17 Third Section

[0044] 18 Third Connection Area

[0045] 19 Individual connectors

[0046] 2. Oil guide plate

[0047] 21. Central air inlet

[0048] 3 Oil box

[0049] 4. Fuselage

[0050] 5. Smoke collection chamber wall

[0051] Y represents the front-to-back direction of the range hood.

[0052] Z-shaped vertical direction of the range hood Detailed Implementation

[0053] To make the technical problems to be solved, the technical solutions, and the beneficial technical effects of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are only for explaining the principles of this application and are not intended to limit the scope of protection of this application. In the various drawings of this application, features with the same structure or similar function are represented by the same reference numerals.

[0054] In all the accompanying drawings, the orientation of the range hood during actual use is used as the reference. Direction Y represents the front-to-back direction of the range hood, and the arrow indicates the front (i.e. the side closer to the user); direction Z represents the up-to-down direction of the range hood, and the arrow indicates the top.

[0055] like Figure 1 and Figure 2As shown, the range hood according to this application includes a filter screen 1 and a smoke guide plate 2 located below the filter screen 1. The smoke guide plate 2 has a central air inlet 21. At the central air inlet 21, a [missing information - likely a type of appliance] is installed. Figure 2 The oil box 3 shown is used to collect grease. The filter 1 and the smoke guide plate 2 are both connected to the smoke collection chamber wall 5 for installation. Here, the central air inlet is not strictly defined as being located at the center of the smoke guide plate 2, but rather is intended to be defined as being surrounded by the smoke guide plate 2. The smoke collection chamber wall 5 can be further connected to the body 4, and a seal is provided at the joint to prevent oil fume leakage.

[0056] refer to Figure 3 and Figure 4 The filter 1 includes a circumferential edge 11 at the top, a first section 12 extending downwards from the circumferential edge 11, and a second section 13 extending further downwards from the first section 12. Specifically, the first angle between the first section 12 and the plane containing the circumferential edge 11 is greater than the second angle between the second section 13 and the plane containing the circumferential edge 11. That is, with the plane containing the circumferential edge 11 as a reference, the inclination of the first section 12 is greater than the inclination of the second section 13. Thus, the filter 1 forms a segmented structure in the portion including the first section 12 and the second section 13. Since the filter 1 is connected to the smoke collection chamber wall 5 at the circumferential edge 11, increasing the inclination of the filter 1 near the circumferential edge 11 allows grease accumulated at the joint between the filter 1 and the smoke collection chamber wall 5 to flow quickly downwards along the filter 1. The relatively smaller inclination of the second section 13 is designed with full consideration of the vertical distance between the filter 1 and the smoke guide plate 2.

[0057] Therefore, the segmented structure of the filter 1 improves the grease conduction performance of the filter 1, especially the grease conduction performance at the joint between the filter 1 and the smoke collection chamber wall 5; it also takes into account the vertical distance between the filter 1 and the smoke guide plate 2, so that the height of the smoke guide plate of the range hood from the bottom of the chamber is not too large, which is crucial for the smoke extraction function of the range hood (such as the smoke capture rate).

[0058] Specifically, the first edge portion 111 of the circumferential edge 11, which connects to the first segment 12, is located outside the smoke guide plate 2 in its vertical projection relative to the smoke guide plate 2, while the first connecting region 14 between the first segment 12 and the second segment 13 is located inside the smoke guide plate 2 in its vertical projection relative to the smoke guide plate 2. Here, "outside the smoke guide plate 2" includes the outer surface of the smoke guide plate 2 and its outer peripheral edge, while "inside the smoke guide plate 2" does not include its outer peripheral edge. Figure 4Taking the first edge portion 111 and the first connecting region 14 as examples, the vertical projection of the first edge portion 111 relative to the smoke guide plate 2 can be its projection downwards along the dashed line L1 onto the plane where the smoke guide plate 2 is located. The vertical projection of the first connecting region 14 relative to the smoke guide plate 2 can be its projection downwards along the dashed line L2 onto the plane where the smoke guide plate 2 is located. As shown in the figure, the dashed line L1 does not pass through the smoke guide plate 2, that is, the vertical projection of the first edge portion 111 is located outside the smoke guide plate 2. The dashed line L2 passes through the smoke guide plate 2, that is, the vertical projection of the first connecting region 14 is located inside the smoke guide plate 2. Furthermore, it should be understood that the circumferential edge 11 mentioned herein can broadly refer to the annular edge formed by the edges of the various side plates (such as the left side plate, right side plate, front side plate, rear side plate, etc.) of the filter 1 or the edges of the various sections (such as the first section, the second section, and the third section) of the filter 1 when the filter 1 is installed. Therefore, in some embodiments, the circumferential edge 11 and its different edge portions can be a part of or formed by the various side plates or sections of the filter 1.

[0059] Because the inclination of the first section 12 is greater than that of the second section 13, when the grease flows along the first section 12 to the first connecting region 14, it tends to accumulate in the first connecting region 14 and drip downwards (e.g., Figure 4 and Figure 5 (As shown). Meanwhile, due to the size limitations of the range hood in the front-to-back direction Y and the layout limitations of its internal components, the vertical projection of the first edge portion 111, which connects to the first section 12, relative to the smoke guide plate 2, is outside the smoke guide plate 2. Therefore, to ensure that the grease on the first section 12 can be collected into the grease box 3 without leakage, the vertical projection of the first connecting area 14 relative to the smoke guide plate 2 is required to be inside the smoke guide plate 2.

[0060] Preferably, the first included angle is greater than or equal to 20°, and additionally or alternatively, the second included angle is greater than or equal to 10°. For example, if the second included angle is less than 10°, oil droplets at the bottom of the filter 1, which cannot be covered by the smoke guide plate 2, will drip directly from the filter 1 onto the stovetop, or when the range hood is working, the airflow will blow the oil droplets here onto the rear wall at the bottom of the range hood, causing inconvenience to the user. Further increasing the first included angle allows the grease accumulated at the joint between the filter 1 and the smoke collection chamber wall 5 to flow downwards more quickly along the first section 12 and drip at the first connecting area 14. In addition, even if some of the grease flowing down along the first section 12 does not drip from the first connecting area 14, it can further flow along the second section 13 and drip downwards together with the grease accumulated in the second section 13. This ensures that all oil droplets accumulated on the filter can flow down the filter and drip smoothly onto the smoke guide plate 2, and then flow into the oil box 3, instead of dripping onto the stovetop below the range hood.

[0061] Preferably, along the front-rear direction Y of the range hood, both the first segment 12 and the second segment 13 are located behind the lowest point of the filter 1 relative to the circumferential edge 11. That is, the filter 1 can have a rear side plate including the first segment 12 and the second segment 13, and a front side plate opposite to the rear side plate. The rear and front side plates gradually converge towards the smoke guide plate 2 along the vertical direction Z of the range hood, making the filter 1 resemble an inverted roof. For this purpose, the filter 1 can also have side panels located on both sides of the first segment 12 and the second segment 13, i.e., left and right side plates connecting the rear and front side plates, which are connected to the third edge portion 113 (e.g., ...). Figure 3 (As shown). Preferably, the left and right side panels can gradually converge toward the smoke guide plate 2 along the vertical direction Z of the range hood, or in some embodiments, they can alternatively extend approximately parallel.

[0062] Additionally or alternatively, such as Figure 3 and Figure 4 As shown, the filter 1 also has a third section 17 extending downward relative to the circumferential edge 11. The third section 17 is arranged opposite to the first section 12 and the second section 13 along the front-rear direction Y of the range hood. The second edge portion 112, where the circumferential edge 11 connects to the third section 17, has its vertical projection relative to the smoke guide plate 2 located inside the smoke guide plate 2. The third section 17 may optionally have a flange extending approximately along the height direction Z to the circumferential edge 11, in which case the outer edge of the flange can form the second edge portion 112. The third section 17 is preferably located on the front side of the filter 1 at its lowest point relative to the circumferential edge 11. That is, the front side plate of the filter 1 may include or be implemented as the third section 17. The vertical projection of the second edge portion 112 relative to the smoke guide plate 2 can be its vertical projection along the... Figure 4 The dotted line L3 shown is projected downwards onto the plane where the smoke guide plate 2 is located. Therefore, grease adhering to the third section 17 can drip into the smoke guide plate 2 regardless of where it falls in the third section (e.g., Figure 4 and Figure 5 As shown, it includes grease dripping directly downwards from the second edge portion 112.

[0063] Therefore, to achieve layout compatibility with other components inside the range hood, the filter 1 can be slightly offset relative to the smoke guide plate 2 in the front-to-back direction Y, especially backward. That is, the vertical projection of the first edge portion 111 on the rear side of the circumferential edge 11 is not covered by the smoke guide plate 2, while the vertical projection of the second edge portion 112 on the front side of the circumferential edge 11 is covered by the smoke guide plate 2. Through the structural modification of the filter 1, the oil droplets on the filter 1 can be included within the coverage area of ​​the smoke guide plate 2, thereby preventing oil leakage.

[0064] Preferably, the first section 12 is a plate-like structure without mesh. Alternatively or additionally, the second section 13 can be a plate-like structure with mesh. Alternatively or additionally, the third section 17 can be a plate-like structure with mesh. Thus, grease is allowed to drip downwards from the second section 13 and the third section 17, but not from the first section 12, thereby preventing oil leakage. The mesh in the second section 13 and the third section 17 effectively blocks and adsorbs grease particles in the flue gas.

[0065] Preferably, the first connecting region 14 between the first segment 12 and the second segment 13 can be formed as a connecting edge. That is, in Figure 4 In the cross-sectional view shown, the first connecting region 14 can be displayed as a point. Compared to a surface, the first connecting region 14, implemented as a connecting edge, can have a better effect on promoting the dripping of grease at this point due to its greater abruptness.

[0066] like Figures 2-5 As shown, the filter screen 1 may also have a recess 15, which is located away from the first section 12 and connects with the second section 13 to form a second connecting region 16. The second connecting region 16 defines the lowest point of the second section 13 and the recess 15 relative to the circumferential edge 11. Thus, grease on the recess 15 and the second section 13 can flow downwards to the second connecting region 16 and drip from the second connecting region 16 onto the oil guide plate 2 (e.g., ...). Figure 4 and Figure 5 (As shown). That is, the second connecting region 16 can define the rear portion of the filter 1 or the lowest point of the rear side plate. Similarly, the second connecting region 16 can also preferably be formed as a connecting edge.

[0067] Furthermore, the recessed portion 15 connects with the third section 17 to form a third connecting region 18, specifically forming a connecting edge. The third connecting region 18 defines the lowest point of the third section 17 and the recessed portion 15 relative to the circumferential edge 11. That is, the third connecting region 18 defines the lowest point of the front portion of the filter 1 or the front side plate. Therefore, grease adhering to the third section 17 can flow along the third section 17 and drip at the third connecting region 18 onto the smoke guide plate 2 (e.g., ...). Figure 4 and Figure 5 (As shown).

[0068] Therefore, for the inverted roof shape formed by the filter 1, the recessed portion 15 is located precisely at the top ridge. Preferably, the recessed portion 15 can be located directly above the central air inlet 21 and recessed in a direction away from the central air inlet 21. That is, as... Figure 4As shown, the recess 15 has a V-shaped cross-section with its opening facing the smoke guide plate 2. Additionally or alternatively, the recess 15 is preferably a plate-like structure without mesh. This helps prevent grease from dripping through the central air inlet 21 of the smoke guide plate 2 onto the cooktop. Grease on the recess 15 needs to flow to the second connection area 16 between it and the second section 13 or to the connection area between it and the third section 17. Thus, the recess 15 reduces the overall height of the filter 1 and creates two lowest points, thus diverting grease.

[0069] It should be understood that the lowest point defined by the second connecting region 16 and the lowest point defined by the third connecting region 18 may be at the same height along the height direction Z, or they may be slightly different. In addition, the second connecting region 16 and the third connecting region 18, which are formed as connecting edges, may extend horizontally at the same height, or they may be slightly inclined.

[0070] Preferably, the left and right side plates of the filter screen 1, which is formed in the shape of an inverted roof tile, can be plate-like structures with mesh openings, and the shape of the mesh openings is adapted to the V-shaped contour of the concave portion 15. This allows for optimized blocking and adsorption of grease particles in the flue gas.

[0071] like Figure 3 and Figure 4 As shown, the filter 1 may further include a connecting protrusion 114 disposed on the circumferential edge 11, through which the filter 1 can be inserted and connected to the smoke collection chamber wall 5 of the range hood. This allows for the installation of the filter 1. Preferably, the connecting protrusion 114 protrudes outward from the circumferential edge 11, and the angle between it and the plane containing the circumferential edge 11 is the same as the first angle. That is, the connecting protrusion 114 can preferably be disposed at the first section 12, i.e., on the first edge portion 111. The connecting protrusion 114 and the first section 12 can have the same degree of inclination relative to the plane containing the circumferential edge 11. This facilitates the manufacturing and formation of the connecting protrusion 114. It is worth noting that the figure shows the connecting protrusion 114 in its uninstalled, natural state. When installing the filter 1, the connecting protrusion 114 can be inserted and connected to the slot in the smoke collection chamber wall 5, at which time the connecting protrusion 114 may be bent to some extent. At the front side plate of filter screen 1, near the second edge portion 112, filter screen 1 can be threadedly connected to the smoke collection chamber wall 5 using a separate connector 19.

[0072] Therefore, according to certain embodiments of this application, by modifying the structure of the filter and adjusting its compatibility with the smoke guide plate, the smoke capture rate of the range hood is maximized, while the filter has improved oil guiding function under the constraints of shape and size.

[0073] It should be understood that the terms "first," "second," "third," etc., used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly specifying the number of technical features indicated. Features specified with "first," "second," or "third" may expressly or implicitly indicate that at least one of those features is included.

[0074] 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 the different embodiments or examples.

Claims

1. A range hood, characterized in that, The range hood includes: Filter (1); and The smoke guide plate (2) is located below the filter (1). The filter (1) includes a circumferential edge (11), a first section (12) extending downward from the circumferential edge (11), and a second section (13) extending further downward from the first section (12). The first angle between the first section (12) and the plane containing the circumferential edge (11) is greater than the second angle between the second section (13) and the plane containing the circumferential edge (11). The first edge portion (111) of the circumferential edge (11) connected to the first section (12) has its vertical projection relative to the smoke guide plate (2) outside the smoke guide plate (2), and the first connection area (14) between the first section (12) and the second section (13) has its vertical projection relative to the smoke guide plate (2) inside the smoke guide plate (2).

2. The range hood according to claim 1, characterized in that, The first included angle is greater than or equal to 20°; and / or The second included angle is greater than or equal to 10°.

3. The range hood according to claim 1 or 2, characterized in that, Along the front-rear direction (Y) of the range hood, both the first section (12) and the second section (13) are located behind the lowest point of the filter (1) relative to the circumferential edge (11); and / or The filter (1) has a rear side plate including the first section (12) and the second section (13), and a front side plate opposite to the rear side plate. The rear side plate and the front side plate gradually move closer to the smoke guide plate (2) along the vertical direction (Z) of the range hood, so that the filter (1) is formed into an inverted roof shape.

4. The range hood according to claim 1 or 2, characterized in that, The first section (12) is a plate-like structure without mesh; and / or The second section (13) is a plate-like structure with mesh; and / or The first connecting region (14) is formed as a connecting edge.

5. The range hood according to claim 1 or 2, characterized in that, The filter (1) has a recess (15) that is away from the first section (12) and is connected to the second section (13) to form a second connection region (16), the second connection region (16) defining the lowest point of the second section (13) and the recess (15) relative to the circumferential edge (11).

6. The range hood according to claim 5, characterized in that, The smoke guide plate (2) has a central air inlet (21), and the recess (15) is located directly above the central air inlet (21) and recessed in a direction away from the central air inlet (21); and / or The recessed portion (15) is a plate-like structure without mesh; and / or The recess (15) has a V-shaped cross-section with the opening facing the smoke guide plate (2); and / or The second connecting region (16) is formed as a connecting edge.

7. The range hood according to claim 6, characterized in that, The filter (1) has side surfaces located on both sides of the first section (12) and the second section (13), the side surfaces being plate-like structures with mesh openings, and the shape of the mesh openings being adapted to the V-shaped contour of the recess (15).

8. The range hood according to any one of claims 1, 2, 6, and 7, characterized in that, The filter (1) also has a third section (17) extending downward relative to the circumferential edge (11), the third section (17) being arranged opposite to the first section (12) and the second section (13) along the front-rear direction (Y) of the range hood. The second edge portion (112) connecting the circumferential edge (11) and the third section (17) has its vertical projection relative to the smoke guide plate (2) located inside the smoke guide plate (2).

9. The range hood according to claim 8, characterized in that, The third section (17) is a plate-like structure with mesh; and / or The third section (17) is located in front of the lowest point of the filter (1) relative to the circumferential edge (11).

10. The range hood according to any one of claims 1, 2, 6, 7, and 9, characterized in that, The filter (1) further includes a connecting protrusion (114) disposed on the circumferential edge (11). The filter (1) is inserted into the smoke collection chamber wall (5) of the range hood through the connecting protrusion (114). The connecting protrusion (114) protrudes outward from the circumferential edge (11), and the angle between it and the plane containing the circumferential edge (11) is the same as the first angle.

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