Air guide structure and range hood

Abstract

The utility model provides a kind of flow guide structure and extractor hood, it is related to the technical field of kitchen appliance, flow guide structure includes: flow guide piece and drive mechanism, flow guide piece includes multiple outer side walls connected in order in circumferential direction head and tail, and the circumferential length of each outer side wall is adjustable;Drive mechanism is connected with flow guide piece, for driving each outer side wall of flow guide piece is reduced or enlarged at equal ratio.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a flow guiding structure and a range hood. Background Technology

[0002] The range hood includes a smoke collection hood, an outer shell, and a fan assembly 1 inside the outer shell. The oil fumes absorbed by the smoke collection hood flow into the outer shell and then into the fan assembly.

[0003] like Figure 2 As shown, in existing range hoods, when the airflow transitions from the smoke collection hood to the outer casing, a flow dead zone is generated due to the excessive change in angle. To avoid the formation of the dead zone, existing range hoods place a wedge-shaped flow guide structure 2 at this location.

[0004] Traditional flow guide structures are fixed and cannot be changed, which leads to a problem: the flow speed may be relatively low and the vortex area may be relatively large when the range hood is on the high setting, but once the flow speed increases to the stir-fry setting, the vortex area may shrink. The existing flow guide structure cannot adapt to the vortex area. Utility Model Content

[0005] The purpose of this invention is to provide a flow guiding structure and a range hood to alleviate the technical problem that the existing flow guiding structure inside the casing cannot adapt to the vortex region.

[0006] Firstly, the present invention provides a flow guiding structure, comprising: A flow guide, comprising multiple outer sidewalls connected sequentially from end to end along the circumference, and the circumferential length of each outer sidewall is adjustable; The drive mechanism is connected to the guide component and is used to drive the outer walls of the guide component to shrink or enlarge proportionally.

[0007] Furthermore, the guide includes a first outer side wall, a second outer side wall, and a third outer side wall connected end to end, forming a triangular region.

[0008] Furthermore, the flow guide includes a back plate, a top plate, and a bottom plate arranged circumferentially; Both the top plate and the bottom plate are telescopic; in the telescopic direction of the top plate, the two outermost edges of the top plate are the first edge and the second edge, respectively; in the circumferential direction, the area between the first edge and the second edge in the top plate forms the first outer side wall; In the direction of expansion and contraction of the base plate, the two outermost edges of the base plate are the third edge and the fourth edge, respectively; in the circumferential direction, the area between the third edge and the fourth edge in the base plate forms the second outer side wall. The first and fourth edges are both connected to the back plate; the second edge is connected to the third edge; the fourth edge is slidably connected to the back plate. In the circumferential direction, the area between the fourth edge and the first edge in the back plate forms the third outer side wall.

[0009] Furthermore, the top plate includes a fixed top plate and a telescopic top plate arranged in parallel. The fixed top plate and the telescopic top plate are slidably connected along the telescopic direction of the top plate, with the first edge located on the fixed top plate and the second edge located on the telescopic top plate. The base plate includes a sliding base plate and a telescopic base plate arranged in parallel. The sliding base plate and the telescopic base plate are slidably connected along the telescopic direction of the base plate. The third edge is located on the telescopic base plate and the fourth edge is located on the sliding base plate.

[0010] Furthermore, the drive mechanism includes a retractable pushing part, which is fixedly connected to the fixed top plate, and the pushing part is connected to the retractable top plate; After the pusher extends and retracts, it can simultaneously drive the top plate to extend and retract, the bottom plate to extend and retract, and the bottom plate to slide relative to the back plate, so that the triangular area is proportionally reduced or enlarged.

[0011] Furthermore, the drive mechanism includes a motor, a lead screw, and a slider; the motor is connected to the fixed top plate, and the motor is connected to one end of the lead screw to drive the lead screw to rotate; The slider is threadedly connected to the lead screw, and the slider is also connected to the telescopic top plate.

[0012] Furthermore, a first guide groove is provided on the fixed top plate, and the telescopic top plate is slidably connected in the first guide groove; A second guide groove is provided on the sliding base plate, and the telescopic base plate is slidably connected in the second guide groove; The back plate is provided with a third guide groove, and the sliding base plate is provided with a pulley, which is slidably connected in the third guide groove.

[0013] Furthermore, there are multiple third guide grooves.

[0014] Furthermore, the second edge is rotatably connected to the third edge.

[0015] Secondly, the range hood provided by this utility model includes the aforementioned airflow guiding structure.

[0016] This utility model has at least the following advantages or beneficial effects: The flow guiding structure provided by this utility model includes: a flow guiding component and a driving mechanism. The flow guiding component includes multiple outer side walls connected sequentially from end to end along the circumference, and the circumferential length of each outer side wall is adjustable. The driving mechanism is connected to the flow guiding component and is used to drive each outer side wall of the flow guiding component to be proportionally reduced or enlarged.

[0017] The size of the flow guide structure can be adjusted according to the dimensions of the vortex region. The dimensions of the vortex region can be obtained first, and then the outer walls of the flow guide structure can be expanded or contracted according to these dimensions, thus scaling the flow guide proportionally to automatically adapt to the current vortex region size. By driving the structure to move the flow guide, the size of the flow guide can be changed, thereby optimizing the flow vortex region and reducing flow losses.

[0018] The range hood provided by this utility model includes the aforementioned airflow guiding structure. Because the range hood provided by this utility model utilizes the aforementioned airflow guiding structure, it also possesses the advantages of an airflow guiding structure. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram illustrating the interaction between the flow guiding structure and the fan assembly provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the interaction between the airflow guiding structure and the fan assembly in the prior art; Figure 3 A schematic diagram of the flow guiding structure provided in an embodiment of this utility model; Figure 4 A schematic diagram of the top plate and back plate of the flow guiding structure provided in an embodiment of this utility model; Figure 5 A schematic diagram of the base plate of the flow guiding structure provided in an embodiment of this utility model; Figure 6 A schematic diagram showing the motion of each outer wall of the flow guiding structure when magnified according to an embodiment of this utility model; Figure 7 The diagram shows the changes in the cross-sectional shape and size of the flow guiding structure before and after magnification, as provided in the embodiment of this utility model.

[0021] Icon: 1 - Fan assembly; 2-Flow guiding structure; 21-Fixed top plate; 211-First guide groove; 22-Telescopic roof panel; 23-Hinges; 24-Telescopic base plate; 25-Sliding base plate; 251-Second guide groove; 252-Pulley; 26-Backplate; 261-Third guide groove; 31-First lateral wall; 32-Second lateral wall; 33-Third lateral wall; 41 - First edge; 42 - Second edge; 43 - Third edge; 44 - Fourth edge; 51-Motor; 52-Lead screw; 53-Slider. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figure 1 As shown, the flow guiding structure 2 provided by this utility model is installed inside the outer shell of the range hood and located below the fan assembly 1. It guides the airflow from the smoke collection hood to the fan assembly 1, solving the problem of dead zones caused by excessive changes in airflow angle during the airflow process.

[0029] The flow guiding structure 2 includes a flow guiding element and a drive mechanism. The flow guiding element is fixedly connected to the housing.

[0030] like Figure 7 As shown, the flow guide includes multiple outer side walls connected sequentially along the circumference. The longitudinal cross-sectional shape of the flow guide can be triangular or trapezoidal. The circumferential length of each outer side wall is adjustable. A driving mechanism is connected to the flow guide and is used to drive each outer side wall of the flow guide to shrink or enlarge proportionally. In this embodiment, the flow guide includes a first outer side wall 31, a second outer side wall 32, and a third outer side wall 33 connected sequentially, forming a triangular region. The longitudinal cross-sectional shape of the flow guide is triangular, and the proportional shrinking or enlarging of each outer side wall means that the triangle formed by the deformed flow guide is similar to the triangle formed by the flow guide before deformation.

[0031] The size of the flow guide structure 2 can be adjusted according to the dimensions of the vortex region. First, the dimensions of the vortex region can be obtained (the dimensions of the vortex region are related to the operating speed of the range hood; these dimensions can be directly obtained based on the user-selected speed). Then, based on the obtained dimensions, the outer walls of each side of the flow guide structure 2 can be expanded or contracted, thus proportionally scaling the flow guide to automatically adapt to the current vortex region size. The flow guide is moved by a drive structure to change its size, thereby optimizing the flow vortex region and reducing flow losses.

[0032] like Figure 3 As shown, specifically, the flow guide includes a back plate 26, a top plate, and a bottom plate arranged circumferentially. The back plate 26 is used to connect with the front side plate of the housing, the bottom plate extends horizontally, the top plate is inclined and faces the fan assembly 1, and the triangle formed by the flow guide can be an acute triangle or a right triangle.

[0033] Both the top and bottom plates can extend or retract in the circumferential direction.

[0034] like Figure 6 and Figure 7 As shown, in the extension and contraction direction of the top plate, the two outermost edges of the top plate are the first edge 41 and the second edge 42, respectively; in the circumferential direction, the area between the first edge 41 and the second edge 42 in the top plate forms the first outer side wall 31.

[0035] like Figure 3 and Figure 4 As shown, specifically, the top plate includes a fixed top plate 21 and a telescopic top plate 22 arranged in parallel. The fixed top plate 21 and the telescopic top plate 22 are slidably connected along the telescopic direction of the top plate. A first edge 41 is located on the fixed top plate 21, and a second edge 42 is located on the telescopic top plate 22. The first edge 41 on the fixed top plate 21 is connected to the upper edge of the back plate 26, and the fixed top plate 21 and the back plate 26 can be an integral structure. A first guide groove 211 is provided on the surface of the fixed top plate 21 facing the inner side of the triangle. The first guide groove 211 is U-shaped and its opening faces the telescopic top plate 22. The telescopic top plate 22 is slidably connected in the first guide groove 211.

[0036] The number of first guide grooves 211 can be two, and the drive mechanism is located between the two first guide grooves 211.

[0037] Similarly, such as Figure 6 and Figure 7 As shown, in the telescopic direction of the base plate, the two outermost edges of the base plate are the third edge 43 and the fourth edge 44, respectively; in the circumferential direction, the area between the third edge 43 and the fourth edge 44 in the base plate forms a second outer side wall 32. The base plate includes a sliding base plate 25 and a telescopic base plate 24 arranged in parallel. The sliding base plate 25 and the telescopic base plate 24 are slidably connected along the telescopic direction of the base plate. The third edge 43 is located on the telescopic base plate 24, and the fourth edge 44 is located on the sliding base plate 25. The telescopic top plate 22 and the telescopic base plate 24 can be an integral structure, and the included angle between their inner surfaces can be an acute angle.

[0038] like Figure 5 As shown, a second guide groove 251 is provided on the sliding base plate 25. The second guide groove 251 is U-shaped and its opening faces the telescopic base plate 24. The telescopic base plate 24 is slidably connected in the second guide groove 251.

[0039] like Figure 3 and Figure 5 As shown, the first edge 41 and the back plate 26 are fixedly connected, and the fourth edge 44 is slidably connected to the back plate 26. In the circumferential direction, the area between the fourth edge 44 and the first edge 41 in the back plate 26 forms a third outer sidewall 33.

[0040] like Figure 3 As shown, a third guide groove 261 is provided on the back plate 26, and a pulley 252 is provided on the sliding base plate 25. The pulley 252 is slidably connected in the third guide groove 261. The angle between the sliding base plate 25 and the back plate 26 remains unchanged, and the sliding base plate 25 slides only along the third guide groove 261 in a straight line, that is, the sliding base plate 25 is always horizontal.

[0041] like Figure 3 and Figure 6 As shown, the drive mechanism includes a retractable pushing part, which is fixedly connected to the fixed top plate 21 and connected to the telescopic top plate 22. Assuming the pushing part extends, it can push the telescopic top plate 22, thereby extending the first outer side wall 31. Simultaneously, the telescopic bottom plate 24 moves away from the sliding bottom plate 25 under the influence of the telescopic top plate 22, increasing the length of the second outer side wall 32. When the telescopic bottom plate 24 moves downward, it can cause the sliding bottom plate 25 to slide downward relative to the back plate 26, thereby increasing the length of the third outer side wall 33, thus proportionally enlarging the triangular region.

[0042] like Figure 4 As shown, specifically, the driving mechanism can be a lead screw motor module, including a motor 51, a lead screw 52, ​​and a slider 53; the motor 51 is connected to the fixed top plate 21, and the motor 51 is connected to one end of the lead screw 52 to drive the lead screw 52 to rotate; the slider 53 is threadedly connected to the lead screw 52, ​​and the slider 53 is connected to the telescopic top plate 22. When the lead screw 52 rotates, it can drive the slider 53 to perform telescopic movement along a straight line.

[0043] Of course, the drive mechanism can also be a motor module for the push unit.

[0044] To achieve sliding stability, the number of third guide grooves 261 is multiple.

[0045] like Figure 3 As shown, the second edge 42 and the third edge 43 are rotatably connected. For example, the telescopic top plate 22 and the telescopic bottom plate 24 are connected by a hinge 23 so that the included angle between the telescopic top plate 22 and the telescopic bottom plate 24 is variable, providing deformation capacity and avoiding increased pressure between the telescopic top plate 22 and the telescopic bottom plate 24 when sliding blockage occurs in a local position.

[0046] The range hood provided by this utility model includes the aforementioned airflow guiding structure 2. Because the range hood provided by this utility model utilizes the aforementioned airflow guiding structure 2, it also possesses the advantages of the airflow guiding structure 2.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A flow guiding structure, characterized in that, include: A flow guide, the flow guide comprising a plurality of outer sidewalls connected sequentially from end to end along the circumference, and the circumferential length of each outer sidewall is adjustable; A driving mechanism, connected to the flow guide, is used to drive each outer side wall of the flow guide to shrink or enlarge proportionally.

2. The flow guiding structure of claim 1, wherein, The flow guide includes a first outer side wall (31), a second outer side wall (32), and a third outer side wall (33) connected end to end, which together form a triangular region.

3. The flow guiding structure according to claim 2, characterized in that, The flow guide includes a back plate (26), a top plate, and a bottom plate arranged circumferentially; Both the top plate and the bottom plate are telescopic; in the telescopic direction of the top plate, the two outermost edges of the top plate are the first edge (41) and the second edge (42), respectively; in the circumferential direction, the area between the first edge (41) and the second edge (42) in the top plate forms the first outer wall (31). In the extension and retraction direction of the base plate, the two outermost edges of the base plate are the third edge (43) and the fourth edge (44), respectively; in the circumferential direction, the area between the third edge (43) and the fourth edge (44) in the base plate forms the second outer side wall (32). The first edge (41) and the fourth edge (44) are both connected to the back plate (26); the second edge (42) is connected to the third edge (43); the fourth edge (44) is slidably connected to the back plate (26), and in the circumferential direction, the area between the fourth edge (44) and the first edge (41) in the back plate (26) forms the third outer sidewall (33).

4. The flow guiding structure according to claim 3, characterized in that, The top plate includes a fixed top plate (21) and a telescopic top plate (22) arranged in parallel. The fixed top plate (21) and the telescopic top plate (22) are slidably connected along the telescopic direction of the top plate. The first edge (41) is located on the fixed top plate (21), and the second edge (42) is located on the telescopic top plate (22). The base plate includes a sliding base plate (25) and a telescopic base plate (24) arranged in parallel. The sliding base plate (25) and the telescopic base plate (24) are slidably connected along the telescopic direction of the base plate. The third edge (43) is located on the telescopic base plate (24), and the fourth edge (44) is located on the sliding base plate (25).

5. The flow guiding structure of claim 4, wherein, The drive mechanism includes a retractable pushing part, the drive mechanism is fixedly connected to the fixed top plate (21), and the pushing part is connected to the retractable top plate (22); After the pusher extends and retracts, it can simultaneously drive the top plate to extend and retract, the bottom plate to extend and retract, and the bottom plate to slide relative to the back plate (26), so that the triangular area is proportionally reduced or enlarged.

6. The flow guiding structure according to claim 5, characterized in that, The driving mechanism includes a motor (51), a lead screw (52) and a slider (53); the motor (51) is connected to the fixed top plate (21), and the motor (51) is connected to one end of the lead screw (52) to drive the lead screw (52) to rotate; The slider (53) is threadedly connected to the lead screw (52), and the slider (53) is connected to the telescopic top plate (22).

7. The flow guiding structure according to any one of claims 4-6, characterized in that The fixed top plate (21) is provided with a first guide groove (211), and the telescopic top plate (22) is slidably connected in the first guide groove (211); The sliding base plate (25) is provided with a second guide groove (251), and the telescopic base plate (24) is slidably connected in the second guide groove (251); The back plate (26) is provided with a third guide groove (261), and the sliding base plate (25) is provided with a pulley (252), which is slidably connected in the third guide groove (261).

8. The flow guiding structure of claim 7, wherein, The number of the third guide grooves (261) is multiple.

9. The flow guiding structure according to any one of claims 3-6, characterized in that The second edge (42) is rotatably connected to the third edge (43).

10. A range hood, characterized in that, Includes the flow guiding structure as described in any one of claims 1-9.

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