Turnover plate with flow blocking function and range hood
By setting a baffle with guide bumps on the flap, the problem of oil smoke overflowing from the edge of the flap is solved, achieving a more efficient oil smoke absorption effect and improving the user's cooking experience.
Patent Information
- Application Number
- CN202422188831.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The flaps of existing range hoods and integrated stoves easily cause oil smoke to overflow from the edges during the rising process, resulting in poor exhaust effect.
A flap with a flow-blocking function is designed. The flap body is connected to the flow-blocking plate. The inner surface of the flow-blocking plate is provided with a guide protrusion. The guide surface gradually increases and then decreases from one end close to the flap body. The guide protrusion is used to generate a suction flow to bring the oil smoke back to the negative pressure area.
Effectively reduce the amount of oil smoke escaping from the edge of the flap, improve oil smoke extraction efficiency and user cooking experience.
Smart Images
Figure CN222992987U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of kitchen appliances, and particularly to a flap with a flow blocking function and a range hood. Background Art
[0002] During the cooking process, a large amount of oil fume is generated. If a user is in an oil fume environment for a long time, it will damage the user's physical health. Moreover, the oil fume generated during cooking will adhere to kitchen utensils and walls, making the cleaning difficult. Therefore, most families will install a freestanding range hood or an integrated stove to alleviate this situation. Among them, the oil fume suction principles of the oil fume suction modules of the freestanding range hood and the integrated stove are basically the same. An air inlet is provided on the smoke collecting hood, and then a fan is provided in the smoke collecting hood. The negative pressure area generated by the fan is used to capture the oil fume so as to suck the oil fume into the smoke collecting hood.
[0003] Whether it is a freestanding range hood or the oil fume suction module of an integrated stove, most of the air inlets of the smoke collecting hoods of both are provided with flaps. The flaps are rotatably arranged on the smoke collecting hood. The flaps have an open position for opening the air inlet and a closed position for closing the air inlet. When the oil fume rises, it impacts the flap. Due to the wall attachment flow effect, it will disperse forward, backward, left and right along the wall surface of the flap, resulting in the oil fume overflowing from the edge of the flap and causing a poor smoking effect.
[0004] Therefore, there is an urgent need for a flap with a flow blocking function to solve the above problems. Summary of the Utility Model
[0005] An object of this application is to solve or at least mitigate part or all of the above problems. To this end, an object of this application is to provide a flap with a flow blocking function and a range hood.
[0006] To achieve the above object, the following technical solutions are adopted in this application:
[0007] In a first aspect, a flap with a flow blocking function for a range hood is provided. The flap with a flow blocking function includes:
[0008] A flap main body, and a first edge of the flap main body is rotatably installed on the smoke collecting hood of the range hood;
[0009] A flow blocking plate, at least one edge of the flap main body other than the first edge is connected with a flow blocking plate. The inner surface of the flow blocking plate has a flow guiding convex block. The distance Dx between the flow guiding surface of the flow guiding convex block and the outer surface of the flow blocking plate first gradually increases and then gradually decreases from the end close to the flap main body to the end far from the flap main body.
[0010] As an optional solution of the flap with a flow blocking function, the longitudinal cross-sectional shape of the flow guiding convex block includes a straight edge and a curved edge. The surface where the straight edge is located is the inner surface of the flow blocking plate, and the surface where the curved edge is located is the flow guiding surface.
[0011] As an alternative to the flap with a flow blocking function, along the direction away from the flap body, the curved edge includes an airfoil leading edge, an airfoil surface, and an airfoil trailing edge that are sequentially connected by arc transitions. The transition curvature between the airfoil leading edge and the airfoil surface is less than the transition curvature between the airfoil surface and the airfoil trailing edge.
[0012] As an alternative to the flap with a flow blocking function, the longitudinal cross-sectional shape of the flow guiding bump is the same at any position.
[0013] As an alternative to the flap with a flow blocking function, the angle between the flow blocking plate and the flap body is any angle between 90° and 150°.
[0014] As an alternative to the flap with a flow blocking function, the flow blocking plate is fixedly connected to the flap body; or
[0015] The flow blocking plate is rotatably connected to the flap body.
[0016] As an alternative to the flap with a flow blocking function, the shape of the flap body is rectangular. The flap body has a second edge opposite to the first edge, and a flow blocking plate is connected to the second edge.
[0017] As an alternative to the flap with a flow blocking function, the length of the flow blocking plate connected to the second edge in the left-right direction of the range hood is equal to the length of the flap body in the left-right direction of the range hood.
[0018] As an alternative to the flap with a flow blocking function, the flap body has a first side connected to the first edge, and a flow blocking plate is connected to the first side; and / or
[0019] The flap body has a second side connected to the first edge, and a flow blocking plate is connected to the second side.
[0020] In a second aspect, a range hood is provided, including:
[0021] A smoke collecting hood having an air inlet;
[0022] A flap with a flow blocking function as described in any one of the above, and the flap with a flow blocking function is rotatably mounted on the smoke collecting hood;
[0023] A flap driving mechanism for driving the flap with a flow blocking function to rotate relative to the air inlet so that the flap with a flow blocking function has an open position for opening the air inlet and a closed position for closing the air inlet.
[0024] The beneficial effects of the present application are as follows:
[0025] The flap with a flow blocking function provided by the present application includes a flap main body and a flow blocking plate. The first edge of the flap main body is rotatably installed on the smoke collecting hood of the range hood; at least one edge of the flap main body other than the first edge is connected with a flow blocking plate, and the inner surface of the flow blocking plate has a flow guiding bump. The distance Dx between the flow guiding surface of the flow guiding bump and the outer surface of the flow blocking plate first gradually increases and then gradually decreases from the end close to the flap main body to the end far from the flap main body. By setting the flow guiding bump, the flow guiding surface of the flow guiding bump can generate an entrainment flow at the flow blocking plate, and the entrainment flow is used to bring the oil fume at the edge of the flap main body back to the negative pressure area, further reducing the escape amount of the oil fume and improving the oil fume suction efficiency.
[0026] By applying the above-mentioned flap with a flow blocking function, the range hood provided by the present application can reduce the escape amount of oil fume overflow, improve the oil fume suction effect of the range hood, and enhance the user cooking experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present application and these drawings.
[0028] Figure 1 It shows a schematic structural diagram of the range hood provided by the present application in one direction;
[0029] Figure 2 It shows a schematic structural diagram of the range hood provided by the present application in another direction;
[0030] Figure 3 It shows based on Figure 1 a fluid simulation schematic diagram of the flap;
[0031] Figure 4 It shows a schematic structural diagram of the flap provided by the present application;
[0032] Figure 5 It shows Figure 4 a partial structural schematic diagram of the flap in
[0033] Figure 6 It shows based on Figure 4 a fluid simulation schematic diagram of the flap.
[0034] Reference numerals:
[0035] 100, smoke collecting hood; 101, air inlet; 200, flap; 300, flap driving mechanism;
[0036] 1. Flap body; 11. First edge; 12. Second edge; 13. First side; 14. Second side;
[0037] 2. Baffle; 21. Flow guiding bump; 21a. Straight edge; 21b. Curved edge. Detailed implementation manner
[0038] Before explaining any implementation manner of the present application in detail, it should be understood that the present application is not limited to the structural details and component arrangements described in the following description or shown in the above drawings.
[0039] In the present application, the term "comprising", "including", "having" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.
[0040] In the present application, the term "and / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the present application, the character " / " generally represents that the associated objects before and after are in an "and / or" relationship.
[0041] In the present application, the terms "connect", "combine", "couple", "mount" may be direct connection, combination, coupling or mounting, or may be indirect connection, combination, coupling or mounting. Among them, for example, direct connection means that two parts or components are connected together without setting an intermediate member, and indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connect" and "couple" are not limited to physical or mechanical connection or coupling, and may include electrical connection or coupling.
[0042] In this application, those of ordinary skill in the art will understand that relative terms used in connection with quantities or conditions (such as "about", "approximately", "substantially", etc.) are intended to include the recited value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances resulting from manufacturing, assembly, use, etc. associated with a particular value. Such terms should also be considered to disclose ranges defined by the absolute values of two endpoints. Relative terms may refer to plus or minus a certain percentage (such as 1%, 5%, 10% or more) of the indicated value. Numerical values without the use of relative terms should also be disclosed as specific values with tolerances. In addition, when expressing relative angular positional relationships (such as substantially parallel, substantially perpendicular), "substantially" may refer to plus or minus a certain number of degrees (such as 1 degree, 5 degrees, 10 degrees or more) from the indicated angle.
[0043] In this application, those of ordinary skill in the art will understand that the functions performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by a part can also be performed by one part, one component, or a combination of multiple parts.
[0044] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", "rear", etc. are described based on the orientation and positional relationship shown in the drawings, and should not be construed as a limitation on the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element. It should also be understood that orientation terms such as the upper side, lower side, left side, right side, front side, rear side, etc. not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side may include directly below, lower left, lower right, lower front, and lower rear, etc.
[0045] Figure 1 The structural schematic diagram of the range hood provided by this application in one direction is shown. Figure 2 The structural schematic diagram of the range hood provided by this application in another direction is shown. As Figures 1 to 2As shown in the figure, the range hood provided by the present application includes a smoke collecting hood 100, a flap 200, and a flap driving mechanism 300. Among them, the smoke collecting hood 100 has an air inlet 101; the flap 200 is rotatably installed on the smoke collecting hood 100, and the flap driving mechanism 300 is used to drive the flap 200 with a flow blocking function to rotate relative to the air inlet 101, so that the flap 200 with a flow blocking function has an open position for opening the air inlet 101 and a closed position for closing the air inlet 101. When the range hood is in the working state, the flap driving mechanism 300 drives the flap 200 to rotate counterclockwise to open the air inlet 101 of the smoke collecting hood 100, so that the cooking fumes can enter the smoke collecting hood 100 from the air inlet 101; when the cooking is over or the user feels that there is no need to continue sucking fumes, the range hood can be turned off. At this time, the flap driving mechanism 300 can drive the flap 200 to rotate clockwise to close the air inlet 101 of the smoke collecting hood 100.
[0046] It can be understood that the range hood provided by the present application can be used as an independent range hood or as a part of an integrated stove, which is not limited herein.
[0047] Figure 3 shows based on Figure 1 the fluid simulation schematic diagram of the flap 200 in. As Figure 3 combined with Figure 2 shown, when the fumes impact the flap 200, a part of the fumes (see the thin line arrow in Figure 3 ) flow towards the inside of the flap 200, and this part is captured by the negative pressure area at the air inlet 101 of the smoke collecting hood 100 and smoothly enters the air inlet 101 of the smoke collecting hood 100. The rest of the fumes (see the thick line arrow in Figure 3 ) flow towards the edge of the flap 200 and finally overflow the flap 200 and cannot be captured by the negative pressure area of the air inlet 101, resulting in fume leakage.
[0048] To solve the above problems, the present application provides a new flap 200. By improving the structure of the flap 200, the escape amount of fumes overflowing from the edge of the flap 200 can be reduced, and the fume extraction efficiency of the range hood can be improved.
[0049] Figure 4 shows the structural schematic diagram of the flap 200 provided by the present application. Figure 5 shows Figure 4 the partial structural schematic diagram of the flap 200 in. As Figures 4 to 5As shown in the figure, the flap 200 provided in the present application includes a flap main body 1 and a flow blocking plate 2. Among them, the first edge 11 of the flap main body 1 is rotatably installed on the smoke collecting hood 100 of the range hood; at least one edge of the flap main body 1 other than the first edge 11 is connected with the flow blocking plate 2, and the inner surface of the flow blocking plate 2 has a flow guiding convex block 21. The distance Dx between the flow guiding surface of the flow guiding convex block 21 and the outer surface of the flow blocking plate 2 first gradually increases and then gradually decreases from the end close to the flap main body 1 to the end far from the flap main body 1. By providing the flow guiding convex block 21, the flow guiding surface of the flow guiding convex block 21 can guide the oil fume, further reducing the escape amount of the oil fume and improving the oil fume suction efficiency.
[0050] In this embodiment, the shape of the flap main body 1 is rectangular. The rectangular flap main body 1 has a first edge 11, a first side 13, a second edge 12, and a second side 14 connected in sequence. The first edge 11 and the second edge 12 are oppositely arranged, and the first side 13 and the second side 14 are oppositely arranged. The first edge 11 of the flap main body 1 is rotatably installed on the smoke collecting hood 100 of the range hood. A flow blocking plate 2 is connected to the second edge 12 of the flap main body 1. The inner surface of the flow blocking plate 2 has a flow guiding convex block 21. The distance Dx between the flow guiding surface of the flow guiding convex block 21 and the inner surface of the flow blocking plate 2 first gradually increases and then gradually decreases from the end close to the flap main body 1 to the end far from the flap main body 1. It can be understood that in other embodiments, the first side 13 and / or the second side 14 of the flap main body 1 can also be connected with the flow blocking plate 2, and when the first side 13 and / or the second side 14 of the flap main body 1 are also connected with the flow blocking plate 2, the flow blocking plate 2 at this place can also be provided with the above-mentioned flow guiding convex block 21, which will not be exemplified one by one here.
[0051] Further, the length of the flow blocking plate 2 connected to the second edge 12 in the left-right direction of the range hood is equal to the length of the flap main body 1 in the left-right direction of the range hood. With such a setting, it can be ensured that the flow blocking plate 2 exists in the extending direction of the second edge 12 of the flap main body 1, thereby improving the overall anti-oil fume escape ability of the flap 200.
[0052] Figure 6 Shows based on Figure 4 in the fluid simulation schematic diagram of the flap 200. As Figure 6 Combined with Figure 5 As shown, for the flap 200 provided in the present application, by adding a flow guiding convex block 21 on the flow blocking plate 2, the flow guiding surface of the flow guiding convex block 21 can generate a larger range of entrainment flow (see Figure 6 at A in
[0053] For the convenience of understanding, the cross-section perpendicular to the plane where the flow guiding bump 21 and the flow blocking plate 2 are located is defined as the longitudinal section of the flow guiding bump 21, and the cross-section parallel to the plane where the flow guiding bump 21 and the flow blocking plate 2 are located is defined as the cross-section of the flow guiding bump 21.
[0054] Continue as Figure 5 shown, the longitudinal section shape of the flow guiding bump 21 includes a straight edge 21a and a curved edge 21b. The plane where the straight edge 21a is located is the inner surface of the flow blocking plate 2, and the plane where the curved edge 21b is located is the flow guiding surface. In other words, the longitudinal section shape of the flow guiding bump 21 is airfoil-shaped. By using the airfoil-shaped flow guiding surface principle to guide the oil fume, a larger range of entrainment flow can be generated to reduce the escape amount of the oil fume overflowing from the edge of the flap body 1 and improve the oil fume suction efficiency of the range hood.
[0055] In one embodiment, along the direction away from the flap body 1, the curved edge 21b includes an airfoil leading edge, an airfoil curved surface, and an airfoil trailing edge that are sequentially connected by arc transitions. The transition curvature between the airfoil leading edge and the airfoil curved surface is smaller than the transition curvature between the airfoil curved surface and the airfoil trailing edge. With such a setting, an entrainment flow can be generated at the junction of the airfoil leading edge and the flap body 1 (see Figure 6 A at), so as to better improve the oil fume suction efficiency of the range hood.
[0056] In one embodiment, the cross-section shape of the flow guiding bump 21 is rectangular, and the longitudinal section shape of the flow guiding bump 21 at any position is the same, so as to ensure that the flow blocking effect of the flow blocking plate 2 in its length direction is equivalent, ensure that the generation positions of the entrainment flow are equivalent, and further improve the oil fume suction efficiency of the range hood.
[0057] In order to ensure the flow blocking effect of the flow guiding bump 21 on the flow blocking plate 2, the angle between the flow blocking plate 2 and the flap body 1 is any angle between 90° and 150°. It can be known from the hydrodynamic analysis that when the angle between the flow blocking plate 2 and the flap body 1 is between 90° and 150°, the flow blocking effect of the flow blocking plate 2 and the flow guiding bump 21 thereon is the best.
[0058] In one embodiment, the flow blocking plate 2 is fixedly connected to the flap body 1, that is, the angle between the flow blocking plate 2 and the flap body 1 is fixed and unchanged, and always maintains the angle at the time of installation. This angle can be any angle value between 90° and 150°, such as 90°, 100°, 120°, 130°, 140°, 150°, etc.
[0059] In another embodiment, the baffle 2 is also rotatably mounted on the flap body 1, that is, the angle between the baffle 2 and the flap body 1 can be adjusted. At this time, the angle between the baffle 2 and the flap body 1 can be adjusted as needed to meet the user's requirements. For example, the flap 200 further includes a baffle driving mechanism for driving the baffle 2 to rotate relative to the flap body 1 so that the baffle 2 has a first position with an included angle θ1 with the flap body 1, a second position with an included angle θ2 with the flap body 1, and a third position folded on the lower surface of the flap body 1, where 90° ≤ θ2 < θ1 < 180°. This design can not only adjust the included angle between the baffle 2 and the flap body 1 according to the working gear of the range hood to adapt to different gear requirements, but also fold the baffle 2 on the inner surface of the flap body 1 so that the flap 200 can be retracted to the position of closing the air inlet 101 when the range hood is closed.
[0060] The foregoing has shown and described the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present application.
Claims
1. A flap with a flow-blocking function, used in a range hood, characterized in that: The flap with flow blocking function comprises: A flap body (1), wherein a first edge (11) of the flap body (1) is rotatably mounted on a smoke collecting hood (100) of the range hood; A spoiler (2), wherein at least one edge of the flap body (1) other than the first edge (11) is connected to the spoiler (2), the inner surface of the spoiler (2) has a flow-guiding protrusion (21), and the distance Dx between the flow-guiding surface of the flow-guiding protrusion (21) and the outer surface of the spoiler (2) first gradually increases and then gradually decreases from one end close to the flap body (1) to the end far from the flap body (1).
2. The flap with flow blocking function according to claim 1, characterized in that: The longitudinal cross-sectional shape of the flow-guiding protrusion (21) comprises a straight edge (21a) and a curved edge (21b); the surface where the straight edge (21a) is located is the inner surface of the spoiler (2), and the surface where the curved edge (21b) is located is the flow-guiding surface.
3. The flap with flow blocking function according to claim 2, characterized in that: Along the direction away from the flap body (1), the curved edge (21b) comprises an airfoil leading edge, an airfoil curved surface and an airfoil trailing edge which are sequentially connected by circular arc transitions, and the transition curvature between the airfoil leading edge and the airfoil curved surface is smaller than the transition curvature between the airfoil curved surface and the airfoil trailing edge.
4. The flap with flow blocking function according to claim 2, characterized in that: The longitudinal cross-sectional shape of the flow guide protrusion (21) at any position is the same.
5. The flap with flow blocking function according to claim 1, characterized in that: The included angle between the spoiler (2) and the flap body (1) is any angle between 90° and 150°.
6. The flap with flow blocking function according to claim 5, characterized in that: The spoiler (2) is fixedly connected to the flap body (1); or The spoiler (2) is rotatably connected to the flap body (1).
7. The flap with flow blocking function according to any one of claims 1 to 6, characterized in that: The flap body (1) is in the shape of a rectangle, and has a second edge (12) arranged opposite to the first edge (11), and the second edge (12) is connected to the spoiler (2).
8. The flap with flow blocking function according to claim 7, characterized in that: The length of the baffle plate (2) connected to the second edge (12) in the left-right direction of the range hood is equal to the length of the flap body (1) in the left-right direction of the range hood.
9. The flap with flow blocking function according to claim 7, characterized in that: The flap body (1) has a first side edge (13) connected to the first edge (11), and the first side edge (13) is connected to the spoiler (2); and / or The flap body (1) has a second side edge (14) connected to the first edge (11), and the second side edge (14) is connected to the spoiler (2).
10. A range hood, characterized in that: include: A smoke collecting hood (100), wherein the smoke collecting hood (100) has an air inlet (101) ； The flap with a flow-blocking function according to any one of claims 1 to 9, wherein the flap with a flow-blocking function is rotatably mounted on the smoke collecting hood (100); A flap driving mechanism (300), the flap driving mechanism (300) being used to drive the flap with a flow blocking function to rotate relative to the air inlet (101), so that the flap with a flow blocking function has an open position for opening the air inlet (101) and a closed position for closing the air inlet (101).