A range hood

Abstract

The utility model provides an oil fume exhauster belongs to kitchen appliance technical field. This oil fume exhauster uses wind -guiding to gather smoke component, include: casing assembly and wind -guiding to gather smoke component, be equipped with air inlet on casing assembly, wind -guiding to gather smoke component can be movably arranged at air inlet, open / close air inlet, wind -guiding to gather smoke component includes gather smoke board and air deflector, the upper portion of gather smoke board is movably connected with casing assembly, and air deflector is connected between casing assembly and gather smoke board and covers both movable connection place inside, the upper portion of air deflector is rotatably connected with casing assembly, and the lower portion of air deflector is slidingly connected with the back of gather smoke board, when gather smoke board opens or closes air inlet, the lower portion of air deflector slides along the back of gather smoke board. Air deflector can keep correct relative position in the process of gather smoke board opening and closing, better guide oil fume to enter the smoke collection chamber. This has improved the smoke suction efficiency greatly, has reduced the possibility of oil fume overflow.

Description

Technical Field

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

[0002] As kitchen appliances become increasingly integrated with home design, range hoods are trending towards more concealed and aesthetically pleasing designs, such as fully concealed or semi-concealed models. However, as the size of range hoods decreases, the usable space within the outer casing also diminishes, making it difficult to accommodate the smoke-collecting plate drive mechanism. Therefore, current solutions typically expose components such as the linkages of the smoke-collecting plate drive mechanism to the outside of the casing. In this case, the exposed linkages of the smoke-collecting plate drive mechanism are prone to accumulating grease, leading to oil dripping and affecting the cleanliness and lifespan of the equipment.

[0003] Furthermore, after the smoke collection plate is opened to the set angle, a certain safety gap is usually left to avoid interference with the outer casing. However, when the amount of oil smoke is large or the smoke extraction effect is insufficient, these gaps may cause oil smoke to escape from the gaps and not be completely extracted in time. These problems seriously affect the user experience and performance of the range hood. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a range hood that not only improves the smoke extraction effect but also solves the problem of oil stain adhesion on the smoke collection plate drive mechanism.

[0005] A range hood is provided, comprising: a housing assembly and an air guiding and smoke gathering assembly. The housing assembly has an air inlet, and the air guiding and smoke gathering assembly is movably disposed at the air inlet to open / close the air inlet. The air guiding and smoke gathering assembly includes a smoke gathering plate and an air guiding plate. The upper part of the smoke-collecting plate is movably connected to the housing assembly, and the air guide plate is connected between the housing assembly and the smoke-collecting plate and internally covers the movable connection between the two. The upper part of the air guide plate is rotatably connected to the housing assembly, and the lower part of the air guide plate is slidably connected to the back of the smoke collection plate. When the smoke-collecting plate opens or closes the air inlet, the lower part of the air guide plate slides along the back of the smoke-collecting plate.

[0006] Furthermore, it also includes: a slide panel and two slide side plates; The bottom end of the sliding panel is fixedly connected to the back of the smoke collection plate; The top of the slide panel and the back of the smoke collection plate maintain a distance; The two slide side plates are respectively disposed on both sides of the slide panel and are fixedly connected to the back of the smoke collection plate; The slide panel and the two slide side plates together form a slide with a top opening, which is used to slide and connect with the lower part of the air guide plate.

[0007] Furthermore, the slide panel includes a flat plate and an inclined plate connected to each other; The flat plate is parallel to the smoke-collecting plate and maintains a distance from it; The end of the inclined panel away from the flat panel is fixedly connected to the back of the smoke-collecting plate.

[0008] Furthermore, it also includes guide blocks; The guide block is disposed in the groove and is fixedly connected to the back of the smoke collecting plate; The side surface of the guide block facing away from the smoke collection plate is in contact with the air guide plate; And / or, the guide block is positioned near the opening end of the groove.

[0009] Furthermore, the side surface of the guide block facing away from the smoke-collecting plate is an arc-shaped guide surface; The arc-shaped guide causes the thickness of the guide block to gradually decrease from the opening end of the groove to the bottom end.

[0010] Furthermore, the guide block is positioned near the opening end of the groove.

[0011] Furthermore, the number of guide blocks is at least two; the two guide blocks are respectively arranged close to both sides of the slide along the width direction.

[0012] Furthermore, the air guide plate has an overall arc-shaped structure that bulges downward in the middle; the arc-shaped structure is used to improve airflow guidance.

[0013] Furthermore, the upper part of the air guide plate is provided with a rotating connection part, which includes a left rotating shaft part and a right rotating shaft part; The left and right rotating shafts are respectively located on both sides of the top of the air guide plate; The left-hand rotating shaft and the air guide plate, and / or the right-hand rotating shaft and the air guide plate are connected by a detachable connection.

[0014] Furthermore, at least one side of the top of the air guide plate is provided with an adjustment mounting structure; The adjustable mounting structure is used for detachable connection with the left and / or right rotating shafts, and allows adjustment of the mounting position of the left and / or right rotating shafts within a certain range.

[0015] Furthermore, a drive mechanism connection part is provided on the back of the smoke collection plate, and a drive component is provided inside the housing assembly, with the output end of the drive component connected to the drive mechanism connection part; The air guide plate is rotatably connected to the housing assembly via the rotating connection part and is disposed below the drive assembly.

[0016] Furthermore, when the smoke-collecting plate is deployed, a preset gap is formed between the top of the smoke-collecting plate and the housing assembly.

[0017] The embodiments of this utility model have the following advantages or beneficial effects: The air guide plate maintains the correct relative position during the opening and closing of the smoke collection plate, better guiding cooking fumes into the smoke collection chamber. This greatly improves smoke extraction efficiency, reduces the possibility of fumes overflowing, and provides users with a cleaner and healthier kitchen environment. Attached Figure Description

[0018] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the structure of a range hood in its off state according to an exemplary embodiment; Figure 2 This is a side view of a range hood when it is open, according to an exemplary embodiment. Figure 3 This is a schematic diagram of a range hood when it is turned on, according to an exemplary embodiment. Figure 4 This is a schematic diagram of the structure of a smoke-collecting plate in a range hood according to an exemplary embodiment; Figure 5 This is a schematic diagram of the structure of a guide vane in a range hood according to an exemplary embodiment.

[0020] The reference numerals in the attached figures are explained as follows: 1. Smoke collecting plate; 2. Air guide plate; 3. Rotating connection part; 4. Drive mechanism connection part; 5. Slide groove; 6. Guide block; 7. Flanged edge; 8. Housing assembly; 9. Smoke collecting plate drive mechanism. 31. Left pivot section; 32. Right pivot section; 51. Slide rail panel; 52. Slide rail side plate; 511. Flat panel; 512. Slanted panel. Detailed Implementation

[0021] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0022] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc.

[0023] Figure 1 This is a schematic diagram of the structure of a range hood in its off state according to an exemplary embodiment; Figure 2 This is a side view of a range hood when it is open, according to an exemplary embodiment. Figure 3 This is a schematic diagram of a range hood when it is turned on, according to an exemplary embodiment. Figure 4 This is a schematic diagram of the structure of a smoke-collecting plate in a range hood according to an exemplary embodiment; Figure 5 This is a schematic diagram illustrating the structure of an air guide plate in a range hood according to an exemplary embodiment. The above schematic diagram is only for illustrating the structural relationships related to the inventive point and is not intended as an actual scale of a product.

[0024] like Figures 1 to 5 As shown in the figure, a range hood according to an embodiment of the present utility model includes: a housing assembly 8 and an air guiding and smoke gathering assembly. The housing assembly 8 is provided with an air inlet. The air guiding and smoke gathering assembly is movably disposed at the air inlet to open / close the air inlet. The air guiding and smoke gathering assembly includes a smoke gathering plate 1 and an air guiding plate 2.

[0025] The upper part of the smoke collection plate 1 is movably connected to the housing assembly 8, and the air guide plate 2 is connected between the housing assembly 8 and the smoke collection plate 1 and internally covers the movable connection between the two.

[0026] The upper part of the air guide plate 2 is rotatably connected to the housing assembly 8, and the lower part of the air guide plate 2 is slidably connected to the back of the smoke collection plate 1; when the smoke collection plate 1 opens or closes the air inlet, the lower part of the air guide plate 2 slides along the back of the smoke collection plate 1.

[0027] The housing assembly 8 is the main supporting structure of the range hood. It contains various functional modules, such as motors and filters, and provides installation space and mounting positions for the smoke collection plate drive mechanism 9 and the air guide and smoke collection assembly.

[0028] The upper part of the air guide plate 2 is provided with a rotating connecting part 3, which is used to rotatably connect the air guide plate 2 to the housing assembly 8 of the range hood; the back of the smoke collecting plate 1 is provided with a drive mechanism connecting part 4, which is used to connect with the drive assembly of the smoke collecting plate 1 of the range hood; the lower part of the air guide plate 2 is slidably connected to the back of the smoke collecting plate 1; when the smoke collecting plate 1 is opened or closed under the drive of the drive assembly of the smoke collecting plate 1, the lower part of the air guide plate 2 slides along the back of the smoke collecting plate 1.

[0029] The smoke collection plate 1 is mainly used to concentrate the cooking fumes generated during the range hood into the smoke collection chamber when the range hood is working. The air guide plate 2 is used to guide the rising fumes into the smoke collection chamber, thereby improving the smoke extraction effect.

[0030] A drive mechanism connection part 4 is provided on the back of the smoke collection plate 1. This drive mechanism connection part 4 is used to connect with the drive assembly of the smoke collection plate 1 of the range hood. When the drive assembly of the smoke collection plate 1 is working, it will drive the smoke collection plate 1 to open or close, so as to effectively collect the oil fumes.

[0031] The drive mechanism 9 of the smoke-collecting plate is installed inside the housing assembly 8, and its output end is connected to the drive mechanism connection part 4 in the air-guiding smoke-collecting assembly. The function of the smoke-collecting plate drive mechanism 9 is to drive the smoke-collecting plate 1 to open or close when needed, thereby effectively collecting the oil fumes generated during cooking. Through this design, the smoke-collecting plate 1 can flexibly adjust its position in different working states to adapt to different cooking needs.

[0032] The top of the air guide plate 2 is provided with a rotating connection part 3, which is used to rotatably connect the air guide plate 2 to the housing assembly 8 of the range hood. With this design, the air guide plate 2 can rotate freely within a certain angle range.

[0033] The back of the smoke collecting plate 1 is also provided with a groove 5, into which the lower part of the air guide plate 2 is inserted. The purpose of this design is to ensure that the air guide plate 2 can maintain the correct relative position during the opening and closing of the smoke collecting plate 1, and together with the smoke collecting plate 1, guide the oil fumes into the smoke collection chamber.

[0034] When the smoke collecting plate 1 rotates under the drive of the smoke collecting plate 1 drive assembly, the lower part of the air guide plate 2 slides in the groove 5. This linkage mechanism not only ensures that the smoke collecting plate 1 and the air guide plate 2 can move synchronously, but also enables the air guide plate 2 to automatically adjust its posture according to the angle change of the smoke collecting plate 1, thereby more effectively guiding the oil fumes to the smoke collection chamber.

[0035] In addition to the aforementioned components, the air guiding and smoke collecting assembly also includes a sliding panel 51 and two sliding side plates 52. The bottom end of the sliding panel 51 is fixedly connected to the back of the smoke collecting plate 1. A gap is maintained between the top of the sliding panel 51 and the back of the smoke collecting plate 1. This design allows the sliding panel 51 to form a space on the back of the smoke collecting plate 1. The two sliding side plates 52 are respectively disposed on both sides of the sliding panel 51 and fixedly connected to the back of the smoke collecting plate 1. The function of the sliding side plates 52 is to form a top-opening sliding groove 5 together with the sliding panel 51. The lower part of the air guiding plate 2 is inserted into the sliding groove 5, realizing a sliding connection between the lower part of the air guiding plate 2 and the back of the smoke collecting plate 1.

[0036] Based on the aforementioned embodiment, the chute panel 51 includes a flat plate 511 and an inclined plate 512 connected to each other. The flat plate 511 is parallel to the smoke collecting plate 1 and maintains a distance from it. This distance provides basic space for the formation of the chute 5 and also ensures that the lower part of the air guide plate 2 can slide smoothly within the chute 5. The end of the inclined plate 512 away from the flat plate 511 is fixedly connected to the back of the smoke collecting plate 1. The inclined plate 512 is inclined relative to the flat plate 511, so that the chute panel 51 as a whole presents a certain angle change. Through this structural design, the sliding path of the air guide plate 2 in the chute 5 is optimized, and the linkage performance between the air guide plate 2 and the smoke collecting plate 1 is improved.

[0037] In one embodiment, a guide block 6 is provided within the slide groove 5, and the guide block 6 is fixedly connected to the back of the smoke collecting plate 1. The guide block 6 is positioned inside the slide groove 5 to guide and limit the sliding process of the lower part of the air guide plate 2 within the slide groove 5. The side surface of the guide block 6 facing away from the smoke collecting plate 1 contacts the air guide plate 2. This contact surface provides support and guidance for the air guide plate 2 during sliding, helping to improve the stability and smoothness of the air guide plate 2's movement, while reducing the occurrence of shaking or jamming. By providing the guide block 6, not only is the directional control capability of the air guide plate 2 enhanced when sliding in the slide groove 5, but it also helps to improve the coordination and reliability of the linkage action between the air guide plate 2 and the smoke collecting plate 1.

[0038] The guide block 6 is positioned near the opening end of the slide groove 5.

[0039] Specifically, the surface of the guide block 6 facing away from the smoke collecting plate 1 is an arc-shaped guide surface. This arc-shaped guide surface causes the thickness of the guide block 6 to gradually decrease from the opening end of the groove 5 towards the bottom end. This structural design helps the air guide plate 2 slide more smoothly within the groove 5, reducing frictional resistance and guiding the air guide plate 2 to move stably along a predetermined path. By using the guide block 6 with an arc-shaped guide surface, not only is the guiding performance of the air guide plate 2 improved during movement, but the fit between the air guide plate 2 and the groove 5 is also optimized, thereby enhancing the linkage and coordination between the air guide plate 2 and the smoke collecting plate 1.

[0040] In one embodiment, the guide block 6 is positioned near the opening end of the chute 5. This positioning helps to provide effective guiding support as the air guide plate 2 begins to enter the sliding path of the chute 5, thereby improving the stability and accuracy of its initial movement.

[0041] Specifically, there are at least two guide blocks 6. The two guide blocks 6 are respectively arranged close to both sides of the slide groove 5 along the width direction. This symmetrical arrangement can provide guidance to both sides of the air guide plate 2 at the same time, further improving the balance and reliability of the air guide plate 2 during the sliding process.

[0042] By setting the guide block 6 on both sides of the opening end of the slide groove 5, not only is the guiding performance of the air guide plate 2 enhanced in the initial sliding stage, but it also helps to prevent the air guide plate 2 from shifting or getting stuck during the movement, thereby optimizing the working performance of the overall air guide and smoke collection assembly.

[0043] In one embodiment, the air guide plate 2 has an overall arc-shaped structure that bulges downward in the middle. Specifically, the central region of the air guide plate 2 is curved downward relative to its two ends, forming an arc-shaped surface that bulges downward in the middle.

[0044] This arc-shaped structure is designed to improve airflow guidance. When the range hood is operating, the rising fumes first come into contact with the arc-shaped surface of the air guide plate 2. Due to this arc-shaped structure, the fumes can be effectively guided and concentrated into the smoke collection chamber, thereby improving the smoke extraction effect. Furthermore, this design reduces the adhesion and dripping of fumes on the surface of the air guide plate 2, further enhancing the overall performance of the range hood. By adopting an arc-shaped structure that bulges downwards in the center, the air guide plate 2 not only better controls the flow of fumes during the smoke collection process but also effectively reduces the contamination of the surface of the air guide plate 2 by fumes, providing users with a cleaner and more efficient cooking environment.

[0045] In one embodiment, the rotating connection portion 3 includes a left rotating shaft portion 31 and a right rotating shaft portion 32. The left rotating shaft portion 31 and the right rotating shaft portion 32 are respectively disposed on both sides of the top of the air guide plate 2, and are used to realize the rotatable connection between the air guide plate 2 and the range hood housing assembly 8.

[0046] The left-turning shaft 31 and the air guide plate 2, and / or the right-turning shaft 32 and the air guide plate 2 are connected by a detachable connection. This detachable connection can be a snap-fit ​​connection, a plug-in connection, or a screw connection, which can be selected according to actual assembly requirements. This design makes the air guide plate 2 more convenient to install or maintain, and also facilitates the replacement of air guide plates 2 of different specifications to adapt to different usage scenarios.

[0047] Furthermore, an adjustment mounting structure is provided on at least one side of the top of the air guide plate 2. This adjustment mounting structure is used to achieve a detachable connection with the left rotating shaft 31 and / or the right rotating shaft 32, and allows the installation position of the left rotating shaft 31 and / or the right rotating shaft 32 to be adjusted within a certain range.

[0048] The adjustable mounting structure includes an elongated hole or multiple positioning holes extending along a preset direction. By installing the left rotating shaft 31 or the right rotating shaft 32 at different positioning hole positions, or by adjusting the position of the connector within the elongated hole groove, fine-tuning of the rotating shaft mounting position can be achieved.

[0049] In one specific embodiment, flanges 7 are provided on both sides of the top of the air guide plate 2 to form a U-shaped mounting position. This U-shaped structure not only provides a stable mounting base for the left-turning shaft 31 and the right-turning shaft 32, but also enhances the overall rigidity of the air guide plate 2.

[0050] The flanges 7 are positioned near the top of the air guide plate 2 on both sides, forming a U-shaped mounting position. Each flange 7 has an elongated hole and a positioning hole. The elongated hole allows for adjustment of the position of the left rotating shaft 31 and / or the right rotating shaft 32 within a certain range, while the positioning hole is used to precisely fix the position of the rotating shaft.

[0051] The left rotating shaft portion 31 includes a left rotating shaft and a left mounting plate that are connected to each other. The left mounting plate has two screw holes for fixing the left rotating shaft portion 31 to the flange 7 on the air guide plate 2 with screws. The right rotating shaft portion 32 includes a right rotating shaft and a right mounting plate that are connected to each other. The right mounting plate also has two screw holes for fixing the right rotating shaft portion 32 to the flange 7 on the air guide plate 2 with screws.

[0052] During installation, first ensure that the flanges 7 on both sides of the top of the air guide plate 2 are correctly formed, and that an elongated hole and a positioning hole have been machined on the flanges 7. Check the left rotating shaft 31 and the right rotating shaft 32 to ensure that the left mounting plate and the right mounting plate on them are each provided with two screw holes.

[0053] Place the left mounting plate on the left flange 7 of the air guide plate 2, aligning the screw holes on the left mounting plate with the elongated holes and positioning holes on the flange 7. Similarly, place the right mounting plate on the right flange 7 of the air guide plate 2, aligning the screw holes on the right mounting plate with the elongated holes and positioning holes on the flange 7.

[0054] Using the adjustment range provided by the elongated holes, fine-tune the positions of the left rotating shaft 31 and the right rotating shaft 32 to ensure that the air guide plate 2 can rotate smoothly and reach the optimal working angle. After the position is adjusted, use screws to pass through the elongated holes and positioning holes on the flange 7 and screw them into the screw holes on the left and right mounting plates to firmly fix the left rotating shaft 31 and the right rotating shaft 32 to the air guide plate 2. Confirm that all screws are tightened and there is no looseness. Check whether the air guide plate 2 rotates smoothly and whether there is any jamming or abnormal noise.

[0055] The back of the smoke collection plate 1 is provided with a drive mechanism connection part 4, which is used to connect with the drive assembly 9 of the smoke collection plate 1 of the range hood.

[0056] The drive mechanism 9 is installed inside the housing assembly 8, and its output end is connected to the drive mechanism connection part 4 in the air guide and smoke collection assembly. The function of the drive mechanism 9 is to drive the smoke collection plate 1 to open or close when needed, thereby effectively collecting the oil fumes generated during cooking. Through this design, the smoke collection plate 1 can flexibly adjust its position in different working states to adapt to different cooking needs.

[0057] The specific structure of the air guide and smoke collection assembly has been described in detail in Embodiment 1. In this embodiment, the air guide plate 2 is rotatably connected to the housing assembly 8 via the rotating connection part 3 and is located below the drive mechanism 9. This layout completely covers the exposed connecting rods of the smoke collection plate drive mechanism 9, thus avoiding the problem of oil dripping from the exposed connecting rods of the smoke collection plate drive mechanism 9.

[0058] In a specific design, when the smoke collection plate 1 is unfolded, a preset gap is formed between the top of the smoke collection plate 1 and the housing assembly 8. The existence of this gap allows the smoke collection plate 1 to move freely in the unfolded state and avoids the inconvenience or risk of damage caused by direct contact with the housing assembly 8.

[0059] When the range hood is started, the smoke collection plate drive mechanism 9 begins to work, driving the smoke collection plate 1 to unfold. At this time, a certain distance is maintained between the top of the smoke collection plate 1 and the housing assembly 8, ensuring that the smoke collection plate 1 can open smoothly and cover the appropriate area. At the same time, the air guide plate 2 is connected to the housing assembly 8 through the rotating connection part 3, and automatically adjusts its posture according to the angle change of the smoke collection plate 1, thereby more effectively guiding the rising fumes into the smoke collection chamber.

[0060] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0061] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" 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 the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0062] In this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A range hood, characterized in that, include: The housing assembly (8) and the air guide and smoke collection assembly are provided with an air inlet. The air guide and smoke collection assembly is movably disposed at the air inlet to open / close the air inlet. The air guide and smoke collection assembly includes a smoke collection plate (1) and an air guide plate (2). The upper part of the smoke collection plate (1) is movably connected to the housing assembly (8), and the air guide plate (2) is connected between the housing assembly (8) and the smoke collection plate (1) and internally covers the movable connection between the two. The upper part of the air guide plate (2) is rotatably connected to the housing assembly (8), and the lower part of the air guide plate (2) is slidably connected to the back of the smoke collection plate (1). When the smoke collection plate (1) opens or closes the air inlet, the lower part of the air guide plate (2) slides along the back of the smoke collection plate (1).

2. A range hood according to claim 1, characterized in that, Also includes: The slide panel (51) and two slide side plates (52); The bottom end of the sliding panel (51) is fixedly connected to the back of the smoke collection plate (1); The top of the slide panel (51) and the back of the smoke collection plate (1) are kept at a distance; The two slide side plates (52) are respectively disposed on both sides of the slide panel (51) and are fixedly connected to the back of the smoke collection plate (1); The slide panel (51) and the two slide side plates (52) together form a top-opening slide (5) for sliding connection with the lower part of the air guide plate (2).

3. A range hood according to claim 2, characterized in that, The slide panel (51) includes a flat plate (511) and an inclined plate (512) connected to each other; The flat plate (511) is parallel to the smoke collection plate (1) and maintains a distance from it; The end of the inclined panel (512) away from the flat panel (511) is fixedly connected to the back of the smoke collection plate (1).

4. A range hood according to claim 2, characterized in that, It also includes a guide block (6), which is disposed in the slide groove (5) and fixedly connected to the back of the smoke collecting plate (1). The side surface of the guide block (6) facing away from the smoke collecting plate (1) is in contact with the air guide plate (2). And / or, the guide block (6) is disposed near the opening end of the groove (5).

5. A range hood according to claim 4, characterized in that, The side surface of the guide block (6) facing away from the smoke collection plate (1) is an arc-shaped guide surface; The arc-shaped guide causes the thickness of the guide block (6) to gradually decrease from the opening end of the groove (5) to the bottom end.

6. A range hood according to claim 1, characterized in that, The air guide plate (2) has an arc-shaped structure with the center protruding downwards; the arc-shaped structure is used to improve airflow guidance.

7. A range hood according to claim 1, characterized in that, The upper part of the air guide plate (2) is provided with a rotating connection part (3), which includes a left rotating shaft part (31) and a right rotating shaft part (32); The left rotating shaft (31) and the right rotating shaft (32) are respectively disposed on both sides of the top of the air guide plate (2); The left-turning shaft (31) and the air guide plate (2), and / or the right-turning shaft (32) and the air guide plate (2) are connected by a detachable connection.

8. A range hood according to claim 7, characterized in that, An adjustment installation structure is provided on at least one side of the top of the air guide plate (2); The adjustable mounting structure is used for detachable connection with the left rotating shaft (31) and / or the right rotating shaft (32), and allows the mounting position of the left rotating shaft (31) and / or the right rotating shaft (32) to be adjusted within a certain range.

9. A range hood according to claim 7, characterized in that, The back of the smoke collection plate (1) is provided with a drive mechanism connection part (4), and the housing assembly (8) is provided with a drive assembly (9). The output end of the drive assembly (9) is connected to the drive mechanism connection part (4). The air guide plate (2) is rotatably connected to the housing assembly (8) through the rotating connection part (3) and is located below the drive assembly (9).

10. A range hood according to claim 9, characterized in that, When the smoke-collecting plate (1) is unfolded, a preset distance is formed between the top of the smoke-collecting plate (1) and the housing assembly (8).

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