Range hood

Abstract

The utility model discloses a range hood which comprises a range hood body, a baffle assembly, a movable panel, an air collection box and an oil guide plate. The range hood main body is provided with an air suction panel, and an air suction opening is formed in the air suction panel; the baffle assembly is connected to the front side of the air suction panel and shields part of the air suction opening, an avoiding groove is formed in the baffle assembly, and the projection of the avoiding groove to the air suction panel always falls into the air suction opening; the movable panel is slidably connected to the front side of the baffle assembly, shields the baffle assembly and is used for opening or shielding the exhaust opening, and the part, exposed out of the baffle assembly and the rear side of the movable panel, of the exhaust opening forms an effective exhaust opening. The air collecting box is arranged in the range hood body and located on the rear side of the air suction panel. An air collecting opening corresponding to the air suction opening is formed in the air collecting box. The oil guide plate is arranged on the rear side wall face of the movable panel, the oil outlet end of the oil guide plate extends to the portion, located below the air collecting box, of the rear side of the air suction panel through the receding groove, and when the movable panel moves on the front side of the air suction panel, the oil guide plate slides in the receding groove. According to the utility model, oil drops can be prevented from overflowing.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and specifically, to a range hood. Background Art

[0002] The range hood includes a housing which encloses a suction opening of the range hood and an exhaust air duct. An exhaust fan is provided in the exhaust air duct. When the range hood is working, the exhaust fan starts and forms a negative pressure area at the suction opening of the range hood. The cooking fumes generated by the user flow towards the negative pressure area, and then enter the exhaust air duct from the suction opening of the range hood under the action of the exhaust fan and are finally discharged. In the related art, an adjustable panel is provided to adjust the air intake area of the suction opening to adapt to different amounts of cooking fumes and the power of the exhaust fan. However, the cooking fumes inhaled from the suction opening will converge into oil droplets on the back of the adjustable panel, and the oil droplets flow downward along the adjustable panel under the action of gravity and are likely to overflow from the gap between the adjustable panel and the panel of the range hood, affecting the user experience. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a range hood, which is used to solve the above technical problems.

[0004] A range hood includes a range hood main body, a baffle assembly, an adjustable panel, an air collecting box and an oil guiding plate;

[0005] The range hood main body has a suction panel with a suction opening provided thereon; the baffle assembly is connected to the front side of the suction panel and blocks part of the suction opening. An avoidance groove is provided on the baffle assembly, and the projection of the avoidance groove on the suction panel always falls within the suction opening; the adjustable panel is slidably connected to the front side of the baffle assembly and blocks the baffle assembly, and is used to open or block the suction opening. The part of the suction opening exposed from the rear sides of the baffle assembly and the adjustable panel forms an effective suction opening; the air collecting box is provided in the range hood main body and is located at the rear side of the suction panel. An air collecting opening corresponding to the suction opening is provided on the air collecting box; the oil guiding plate is provided on the rear side wall surface of the adjustable panel, and the oil outlet end of the oil guiding plate extends through the avoidance groove to the part below the air collecting box at the rear side of the suction panel. When the adjustable panel moves on the front side of the suction panel, the oil guiding plate slides in the avoidance groove.

[0006] According to an embodiment of the utility model, the baffle assembly includes a movable baffle and a fixed baffle. An upper notch is provided at the upper edge of the movable baffle, and the avoidance groove is provided on the movable baffle. A lower notch is provided at the lower edge of the fixed baffle. When the movable baffle and the fixed baffle are butted, the upper notch and the lower notch enclose a long strip-shaped opening, and the part of the long strip-shaped opening aligned with the suction opening forms a normally open suction opening.

[0007] According to an embodiment of the utility model, the movable baffle is slidably connected to the front side of the suction panel, and it can move downward along with the adjustable panel after the adjustable panel opens the normally open suction opening. The part of the suction opening located between the upper notch and the lower notch constitutes the effective suction opening.

[0008] According to an embodiment of the present utility model, a groove is provided on the air suction panel, the air suction port is arranged in the groove, a fixed baffle is arranged in the groove and above the air suction port, and a movable baffle is slidably connected in the groove.

[0009] According to an embodiment of the present utility model, an elastic support member is provided at the bottom of the groove, the elastic support member supports the movable baffle from the lower end of the movable baffle, and when the movable baffle slides downward along the groove, the elastic support member is compressed.

[0010] According to an embodiment of the present utility model, the oil guide plate includes a connecting section and an oil guiding section, the connecting section is connected to the inner side wall surface of the movable panel, the leading edge of the oil guiding section is connected to the lower edge of the connecting section, and the oil guiding section passes through the avoidance groove and extends to the rear side of the baffle assembly.

[0011] According to an embodiment of the present utility model, a force applying portion is provided on the portion of the oil guiding section that is aligned with the lower edge of the avoidance groove. When the normally open air suction port is opened, the force applying portion acts on the lower edge of the avoidance groove. When the movable panel continues to move downward, the force applying portion synchronously drives the movable baffle to move downward to adjust the size of the effective air suction port. When the area of the effective air suction port is larger than the area of the normally open air suction port and it is necessary to reduce the size of the effective air suction port, the movable panel moves upward, and the elastic support member drives the movable baffle to move upward.

[0012] According to an embodiment of the present utility model, a driving device is further included, and the driving device is used to drive the movable panel to move, or to drive the movable baffle and the movable panel to move simultaneously after the normally open air suction port is opened so that the size of the effective air suction port changes.

[0013] According to an embodiment of the present utility model, a guiding groove is provided on the air suction panel, the driving device includes a driving component, a guiding component and a first connecting member. The guiding component is arranged on the rear side wall surface of the air suction panel, the driving component is arranged on the rear side wall surface of the air suction panel, and its output end is connected to the first connecting member for driving the first connecting member to slide along the guiding component. A second connecting member is provided on the movable panel, the second connecting member is slidably connected in the guiding groove, and the second connecting member passes through the guiding groove and is connected to the first connecting member.

[0014] According to an embodiment of the present utility model, the driving component includes a driving motor and a driving gear. The driving motor is arranged on the rear side wall surface of the air suction panel, and its output end is connected to the driving gear. The guiding component includes a guiding slide seat, a guiding rack and a slider. The guiding slide seat is arranged on the rear side wall surface of the air suction panel, the slider is slidably connected to the slide seat, the guiding rack is fixedly connected to the slider, the driving gear meshes with the guiding rack, and the first connecting member is connected to the slider.

[0015] Compared with the prior art, the range hood of the present utility model has the following advantages:

[0016] For the range hood of the present utility model, an oil guide plate is provided on the rear side wall surface of the movable panel. The oil guide plate can guide the oil formed on the rear side wall surface of the movable panel during the oil fume exhaust process into the main body of the range hood through the air suction port, preventing the oil from dripping from the rear side wall surface of the movable panel to the outside of the main body of the range hood. And after the oil guide plate acts on the baffle assembly, if the movable panel continues to move downward, the oil guide plate will apply a downward force to the baffle assembly, causing the baffle assembly to continue to open the air suction port, and the effective air suction area can be adjusted. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the range hood of the present utility model;

[0018] Figure 2 is a schematic structural diagram of another embodiment of the range hood of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the range hood of the present utility model after removing the movable panel;

[0020] Figure 4 is an exploded view of the structure of the range hood of the present utility model;

[0021] Figure 5 is a cross-sectional view of the structure of the range hood of the present utility model;

[0022] Figure 6 is a schematic structural diagram of the movable panel in the present utility model;

[0023] Figure 7 is a schematic diagram of the installation position and structure of the driving device on the air suction panel in the present utility model;

[0024] Figure 8 is Figure 7 a partial enlarged view of part A in

[0025] In the figure: 1. Main body of the range hood; 11. Air suction panel; 111. Air suction port; 112. Groove; 113. Guide groove; 12. Elastic support member; 2. Baffle assembly; 21. Movable baffle; 211. Avoidance groove; 22. Fixed baffle; 3. Movable panel; 31. Second connecting member; 4. Air collecting box; 41. Air collecting port; 5. Oil guide plate; 51. Connecting section; 52. Oil guiding section; 53. Force applying part; 6. Driving device; 61. Driving assembly; 611. Driving motor; 612. Driving gear; 62. Guide assembly; 621. Guide sliding seat; 622. Guide rack; 623. Slide block; 63. First connecting member.

[0026] The realization and advantages of the functions of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0027] The following will disclose multiple embodiments of the present utility model with diagrams. For the sake of clear illustration, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present utility model. That is to say, in some embodiments of the present utility model, these practical details are not necessary. In addition, for the purpose of simplifying the diagrams, some conventional structures and components will be illustrated in a simple schematic manner in the diagrams.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0029] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the order or sequence, nor are they used to limit the present utility model. They are merely used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] To further understand the content, features and effects of the present utility model, the following embodiments are exemplified and described in detail with reference to the attached drawings as follows:

[0031] The present utility model discloses a range hood. Please refer to Figures 1 to 5, including a range hood main body 1, a baffle assembly 2, a movable panel 3, an air collecting box 4, and an oil guiding plate 5; the range hood main body 1 has an air suction panel 11, and an air suction opening 111 is provided on the air suction panel 11; the baffle assembly 2 is connected to the front side of the air suction panel 11 and blocks part of the air suction opening 111, and an avoidance groove 211 is formed on the baffle assembly 2, and the projection of the avoidance groove 211 on the air suction panel 11 always falls into the air suction opening 111; the movable panel 3 is slidably connected to the front side of the baffle assembly 2 and blocks the baffle assembly 2, and is used to open or block the air suction opening 111, and the part of the air suction opening 111 exposed from the rear sides of the baffle assembly 2 and the movable panel 3 forms an effective air suction opening; the air collecting box 4 is arranged in the range hood main body 1 and is located at the rear side of the air suction panel 11, and an air collecting opening 41 corresponding to the air suction opening 111 is provided on the air collecting box 4; the oil guiding plate 5 is arranged on the rear side wall surface of the movable panel 3, and the oil outlet end of the oil guiding plate 5 extends through the avoidance groove 211 to the part below the air collecting box 4 at the rear side of the air suction panel 11. When the movable panel 3 moves in front of the air suction panel 11, the oil guiding plate 5 slides in the avoidance groove 211. For the range hood of the present utility model, the movable panel 3 can open the air suction opening 111. When the movable panel 3 opens the air suction opening and the oil guiding plate 5 is located above the baffle assembly 2, the part of the air suction opening 111 not blocked by the baffle assembly 2 and exposed from the rear side of the movable panel 3 is the effective air suction opening. When the oil guiding plate 5 is located above the movable baffle 2, at this time, when the movable panel 3 continues to move downward, the oil guiding plate 5 will move downward along with the movable panel 3 and apply a downward force to the baffle assembly 2, and the baffle assembly 2 moves downward. At this time, the area of the effective air suction opening increases.

[0032] For the range hood of the present utility model, an avoidance groove 211 is provided on the baffle assembly 2. The avoidance groove 211 is used to avoid the oil guiding plate 5. The oil guiding plate 5 passes through the avoidance groove 211 and the air suction opening 111 and extends into the interior of the range hood main body 1. When the oil and smoke generated on the rear side wall surface of the movable panel 3 drops onto the oil guiding plate 5, the oil guiding plate 5 can guide the oil into the range hood main body 1.

[0033] In this embodiment, the movable panel 3 can slide up and down along the air suction panel 11. The position where the movable panel 3 opens the air suction opening 111 is below the position where it closes the air suction opening 111. That is to say, the movable panel 3 is always located below the effective air suction opening; therefore, the oil guiding plate 5 arranged on the rear wall surface of the movable panel 3 is also always located below the effective air suction opening.

[0034] According to an embodiment of the present utility model, please refer to Figures 1 to 4, the baffle assembly 2 includes a movable baffle 21 and a fixed baffle 22. The upper edge of the movable baffle 21 is provided with an upper notch, and an avoidance groove 211 is arranged on the movable baffle 21. The lower edge of the fixed baffle 22 is provided with a lower notch. When the movable baffle 21 is docked with the fixed baffle 22, the upper notch and the lower notch enclose a long strip-shaped opening, and the part of the long strip-shaped opening aligned with the air suction port 111 forms a normally open air suction port. When the oil guide plate 5 is located above the movable baffle 21, the movable panel 3 moves downward, and the movable baffle 21 and the fixed baffle 22 are in a docked state. At this time, when the movable panel 3 moves downward, only the normally open air suction port can be opened. And when the normally open air suction port is fully opened, the oil guide plate 5 moves above the movable baffle 21. Continuing to move the movable panel 3 downward, the oil guide plate 5 moves downward with the movable panel 3 and presses the movable baffle 21 downward, increasing the air suction area of the effective air suction port.

[0035] According to an embodiment of the present invention, please refer to Figure 3 , a groove 112 is provided on the air suction panel 11, the air suction port 111 is arranged in the groove 112, the fixed baffle 22 is arranged in the groove 112 and is located above the air suction port 111, and the movable baffle 21 is slidably connected in the groove 112. After the fixed baffle 22 and the movable baffle 21 are connected to the air suction panel 11, the front side wall surfaces of the movable baffle 21 and the fixed baffle 22 are just in the same plane as other parts of the air suction panel 11.

[0036] According to an embodiment of the present invention, please refer to Figure 2 , an elastic support member 12 is provided at the bottom of the groove 112. The elastic support member 12 supports the movable baffle 21 from the lower end of the movable baffle 21. When the movable baffle 21 slides downward along the groove 112, the elastic support member 12 is compressed. The elastic support member 12 can elastically deform when the movable baffle 21 is close to the bottom of the groove 112 to play a buffering role, preventing the movable baffle 21 from directly hitting the bottom of the groove 112 and making noise or causing damage. If the driving force for driving the movable baffle 21 to move downward is removed, the elastic support member 12 can recover its deformation and drive the movable baffle 21 to reset upward through the elastic force, so that there is no need to additionally apply a reset driving force to the movable baffle 21 to reduce the energy consumption required for the movable baffle 21 to reset upward.

[0037] According to an embodiment of the present invention, please refer to Figure 5 and Figure 6, the oil guiding plate 5 includes a connecting section 51 and an oil guiding section 52. The connecting section 51 is connected to the inner wall surface of the movable panel 3. The leading edge of the oil guiding section 52 is connected to the lower edge of the connecting section 51. The oil guiding section 52 extends through the avoidance groove 211 and reaches the rear side of the baffle assembly 2. When the oil fume enters the air collecting box 4 through the air suction opening 111, the oil liquid formed on the inner wall surface of the movable panel 3 will flow along the inner wall surface of the movable panel 3 and be received by the oil guiding section 52, and then flow along the oil guiding section 52 and be introduced into the interior of the range hood main body 1.

[0038] According to an embodiment of the present invention, please refer to Figure 5 and Figure 6 , a force applying portion 53 is provided on the portion of the oil guiding section 52 that is aligned with the lower edge of the avoidance groove 211. When the normally open air suction opening is opened, the force applying portion 53 acts on the lower edge of the avoidance groove 211. When the movable panel 3 continues to move downward, the force applying portion 53 synchronously drives the movable baffle 21 to move downward to adjust the size of the effective air suction opening. When the area of the effective air suction opening is larger than the area of the normally open air suction opening and it is necessary to reduce the size of the effective air suction opening, the movable panel 3 moves upward, and the elastic support member 12 drives the movable baffle 21 to move upward.

[0039] The opening process of the air suction opening 111 includes a first stage and a second stage. In the first stage, the movable panel 3 moves a first preset stroke and the movable baffle 21 does not move. At this time, the air intake area of the effective air suction opening is the area of the normally open air suction opening, and the force applying portion 53 does not contact the movable baffle 21. When the normally open air suction opening is fully opened, the force applying portion 53 contacts the lower edge of the avoidance groove 211 of the movable baffle 21. When entering the second stage, when the movable panel 3 moves downward, the force applying portion 53 acts on the lower edge of the avoidance groove 211 and causes the movable baffle 21 to move downward, and the area of the air suction opening 211 above the movable baffle 21 becomes larger. At this time, the air intake area of the effective air suction opening is the air intake area of the normally open air suction opening + the increased air intake area of the air suction opening 111 in the second stage, so as to increase the air intake area of the effective air suction opening.

[0040] When the user is performing a cooking operation, if the speed of oil fume generation during the cooking process is relatively fast and the amount of oil fume generated is also relatively large, the process of the movable panel 3 opening the air suction port 111 only needs to proceed to the first stage, that is, the movable panel 3 only needs to open the normally open air suction port. At this time, since the air suction area of the effective air suction port is relatively small and is narrow and long strip-shaped, after the exhaust fan of the range hood is started, a relatively large negative pressure can be formed at the narrow and long strip-shaped air suction port 111. The oil fume generated during the user's cooking process will flow towards the narrow and long strip-shaped air suction port 111 and be sucked into the exhaust air duct of the range hood under the action of the negative pressure. When the oil fume passes through the narrow and long strip-shaped air suction port 111, the wind speed is relatively large, and it can quickly enter the exhaust air duct and be discharged by the exhaust fan, so that the oil fume generated during the user's cooking process can be quickly sucked into the exhaust air duct by the narrow and long strip-shaped air suction port 111, and the air in the user's cooking space can be quickly purified.

[0041] If the speed of oil fume generation during the cooking process is relatively slow and the amount of oil fume generated is also relatively small, the power of the exhaust fan of the range hood can be reduced. At this time, the process of the movable panel 3 opening the air suction port 111 needs to proceed to the second stage, that is, the movable panel 3 and the movable baffle 21 move together to increase the air intake area of the effective air suction port. In this way, the wind resistance when the oil fume passes through the air suction port 111 can be reduced, while ensuring that the range hood has a good purification effect on the oil fume generated during the cooking process, the noise at the air suction port 111 is reduced.

[0042] In the second stage of the movable panel 3 opening the air suction port 111, when the movable panel 3 continues to move downward, the force application part 53 will push the movable baffle 21 to move together. Thus, in the second stage, the movable baffle 21 can be driven by the movable panel 3, that is, only the movable panel 3 needs to continue to move, without driving the movable baffle 21, so as to simplify the driving mode of the movable baffle 21. If the movable panel 3 moves upward, that is, the driving force for driving the movable baffle 21 to move downward is removed, the elastic support member 12 can recover its deformation and drive the movable baffle 21 to reset upward through the elastic force, so that there is no need to additionally apply a reset driving force to the movable baffle 21 to reduce the energy consumption required for the movable baffle 21 to reset upward.

[0043] According to an embodiment of the present invention, please refer to Figure 7 and Figure 8 , the range hood further includes a driving device 6, and the driving device 6 is used to drive the movable panel 3 to move, or drive the movable baffle 21 and the movable panel 3 to move simultaneously after the normally open air suction port is opened so as to change the size of the effective air suction port. Both the first stage and the second stage of the movable panel 3 opening the air suction port 111 are driven by the driving device 6. In this way, the automatic operation of the movable panel 3 can be realized, and it is convenient for the range hood to control the movement process of the movable panel 3 by controlling the operation of the driving device 6.

[0044] According to an embodiment of the present utility model, please refer to Figure 7 and Figure 8 . A guiding groove 113 is provided on the air suction panel 11. The driving device 6 includes a driving assembly 61, a guiding assembly 62 and a first connecting member 63. The guiding assembly 62 is arranged on the rear side wall surface of the air suction panel 11, and the driving assembly 61 is arranged on the rear side wall surface of the air suction panel 11. Its output end is connected to the first connecting member 63 for driving the first connecting member 63 to slide along the guiding assembly 62. A second connecting member 31 is provided on the movable panel 3. The second connecting member 31 is slidably connected in the guiding groove 113. The second connecting member 31 passes through the guiding groove 113 and is connected to the first connecting member 63. The driving assembly 61 drives the movable panel 3 through the first connecting member 63 and the second connecting member 31. The guiding assembly 62 guides the sliding process of the first connecting member 63, and the guiding groove 113 guides the guiding process of the second connecting member 31. In this way, it can be ensured that the movable panel 3 can move within a preset sliding track, preventing the movable panel 3 from shifting, so as to improve the movement stability of the movable panel 3.

[0045] According to an embodiment of the present utility model, please refer to Figure 7 and Figure 8 . The driving assembly 61 includes a driving motor 611 and a driving gear 612. The driving motor 611 is arranged on the rear side wall surface of the air suction panel 11, and its output end is connected to the driving gear 612. The guiding assembly 62 includes a guiding slide base 621, a guiding rack 622 and a slider 623. The guiding slide base 621 is arranged on the rear side wall surface of the air suction panel 11. The slider 623 is slidably connected to the slide base. The guiding rack 622 is fixedly connected to the slider 623. The driving gear 612 meshes with the guiding rack 622, and the first connecting member 63 is connected to the slider 623. When the output end of the driving motor 611 rotates, it can drive the guiding rack 622 to move linearly through the driving gear 612, thereby driving the slider 623 to slide along the slide base. In this way, the specific driving mode of the driving assembly 61 for the movable panel 3 can be simplified, and the guiding effect of the guiding assembly 62 can be improved.

[0046] In the range hood of the present utility model, an oil guiding plate 5 is arranged on the rear side wall surface of the movable panel 3. The oil guiding plate 5 can guide the oil formed on the rear side wall surface of the movable panel 3 during the oil fume exhaust process into the range hood main body through the air suction port 111, avoiding the oil from dripping from the rear side wall surface of the movable panel 3 to the outside of the range hood main body. And after the oil guiding plate 5 acts on the baffle assembly 2, if the movable panel 3 continues to move downward, the oil guiding plate 5 will apply a downward force to the baffle assembly 2, so that the movable baffle assembly 2 continues to open the air suction port 111, and the effective air suction area can be adjusted.

[0047] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, or improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A range hood, characterized in that: include: A range hood body (1) having an air suction panel (11), wherein the air suction panel (11) is provided with an air suction port (111); a baffle assembly (2) connected to the front side of the air suction panel (11) and shielding a portion of the air suction port (111); a avoidance groove (211) is provided on the baffle assembly (2); a projection of the avoidance groove (211) onto the air suction panel (11) always falls within the air suction port (111); a movable panel (3) which is slidably connected to the front side of the baffle assembly (2) and covers the baffle assembly (2), and is used to open or cover the air suction port (111); the air suction port (111) is formed by a portion exposed from the rear side of the baffle assembly (2) and the movable panel (3) to form an effective air suction port; An air collecting box (4) is arranged in the range hood body (1) and is located at the rear side of the air suction panel (11); the air collecting box (4) is provided with an air collecting port (41) corresponding to the air suction port (111); An oil guide plate (5) is arranged on the rear wall surface of the movable panel (3), and the oil outlet end of the oil guide plate (5) extends through the avoidance groove (211) to the rear side of the air suction panel (11) and the part below the air collecting box (4). When the movable panel (3) moves in front of the air suction panel (11), the oil guide plate (5) slides in the avoidance groove (211).

2. The range hood according to claim 1, characterized in that: The baffle assembly (2) comprises a movable baffle (21) and a fixed baffle (22); an upper notch is provided on the upper edge of the movable baffle (21); the avoidance groove (211) is provided on the movable baffle (21); a lower notch is provided on the lower edge of the fixed baffle (22); when the movable baffle (21) is butt-jointed with the fixed baffle (22), the upper notch and the lower notch enclose a long strip opening; a portion of the long strip opening aligned with the air suction port (111) forms a normally open air suction port.

3. The range hood according to claim 2, characterized in that: The movable baffle (21) is slidably connected to the front side of the air suction panel (11), and can move downward along with the movable panel (3) after the movable panel (3) opens the normally open air suction port. The portion of the air suction port (111) between the upper notch and the lower notch constitutes an effective air suction port.

4. The range hood according to claim 3, characterized in that: The air suction panel (11) is provided with a groove (112), the air suction port (111) is provided in the groove (112), the fixed baffle (22) is provided in the groove (112) and is located above the air suction port (111), and the movable baffle (21) is slidably connected in the groove (112).

5. The range hood according to claim 4, characterized in that: An elastic support member (12) is provided at the bottom of the groove (112), and the elastic support member (12) supports the movable baffle (21) from the lower end of the movable baffle (21); when the movable baffle (21) slides downward along the groove (112), the elastic support member (12) is compressed.

6. The range hood according to claim 5, characterized in that: The oil guide plate (5) comprises a connecting section (51) and an oil guide section (52); the connecting section (51) is connected to the inner wall surface of the movable panel (3); the front edge of the oil guide section (52) is connected to the lower edge of the connecting section (51); the oil guide section (52) passes through the avoidance groove (211) and extends into the rear side of the baffle assembly (2).

7. The range hood according to claim 6, characterized in that: A force-applying portion (53) is provided on a portion of the oil guide section (52) aligned with the lower edge of the avoidance groove (211); when the normally open air suction port is opened, the force-applying portion (53) acts on the lower edge of the avoidance groove (211); when the movable panel (3) continues to move downward, the force-applying portion (53) synchronously drives the movable baffle (21) to move downward, so as to adjust the size of the effective air suction port; when the area of ​​the effective air suction port is larger than the area of ​​the normally open air suction port and the size of the effective air suction port needs to be reduced, the movable panel (3) moves upward, and the elastic support member (12) drives the movable baffle (21) to move upward.

8. The range hood according to claim 3, characterized in that: It also comprises a driving device (6), the driving device (6) being used to drive the movable panel (3) to move, or to drive the movable baffle (21) and the movable panel (3) to move simultaneously after the normally open air suction port is opened, so as to change the size of the effective air suction port.

9. The range hood according to claim 8, characterized in that: The air suction panel (11) is provided with a guide groove (113), and the driving device (6) comprises a driving component (61), a guide component (62) and a first connecting member (63). The guide component (62) is provided on the rear wall of the air suction panel (11). The driving component (61) is provided on the rear wall of the air suction panel (11), and its output end is connected to the first connecting member (63) for driving the first connecting member (63) to slide along the guide component (62). The movable panel (3) is provided with a second connecting member (31), and the second connecting member (31) is slidably connected in the guide groove (113). The second connecting member (31) passes through the guide groove (113) and is connected to the first connecting member (63).

10. The range hood according to claim 9, characterized in that: The driving assembly (61) comprises a driving motor (611) and a driving gear (612); the driving motor (611) is arranged on the rear wall of the air suction panel (11); and an output end of the driving motor (611) is connected to the driving gear (612); the guiding assembly (62) comprises a guiding slide (621), a guiding rack (622) and a sliding block (623); the guiding slide (621) is arranged on the rear wall of the air suction panel (11); the sliding block (623) is slidably connected to the slide (421); the guiding rack (622) is fixedly connected to the sliding block (623); the driving gear (612) is meshed with the guiding rack (622); and the first connecting member (63) is connected to the sliding block (623).

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