Range hood

Abstract

The utility model relates to the field of kitchen appliances, and discloses a range hood. The range hood comprises a shell, a turning plate mechanism and a limiting mechanism, the turning plate mechanism is used for closing or opening a smoke inlet in the shell and comprises a first turning plate assembly and a second turning plate assembly located below the first turning plate assembly, and the first turning plate assembly is rotationally connected with the shell; the limiting structure is arranged on the shell, and the second turning plate assembly moves along the limiting structure; the second turning plate assembly is turned outwards earlier than the first turning plate assembly, so that the turning plate mechanism has a semi-open state that only the second turning plate assembly is opened; the second turning plate assembly can drive the first turning plate assembly to turn outwards together, so that the turning plate mechanism has a full-open state that the first turning plate assembly and the second turning plate assembly are both opened, and in the full-open state, the opening angle of the second turning plate assembly is equal to the opening angle of the first turning plate assembly. According to the range hood, the second turning plate assembly and the first turning plate assembly are opened in sequence, and the adaptability to different use working conditions is improved.

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] Range hoods are widely used electrical appliances in kitchens to remove cooking fumes. A typical range hood consists of a housing and a flap assembly. The housing has a smoke inlet. When the range hood is not in use, the flap assembly is closed, blocking the smoke inlet. When the range hood is in operation, the flap assembly flips outward, opening the smoke inlet, thus effectively trapping the smoke.

[0003] As people's living standards and demands for quality of life improve, they have higher requirements for the smoke extraction effect of range hoods. At the same time, they hope that range hoods can adapt their functions to the specific use cases, so that the needs for smoke extraction effect, energy saving, convenience, and appearance can be balanced accordingly.

[0004] To meet the above requirements, range hoods with multiple flaps have been introduced to the market. The flap assembly includes a first flap and a second flap. The first flap and the second flap flip outwards simultaneously, and the final outward flip angle is the same. Its smoke collection area is fixed, which cannot adapt to various usage scenarios and affects the user experience.

[0005] Therefore, there is an urgent need for a range hood to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this utility model is to provide a range hood that can open the second flap assembly and the first flap assembly in sequence to adapt to different working conditions.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A range hood, comprising:

[0009] The casing has a smoke inlet.

[0010] A flap mechanism for closing or opening the smoke inlet, the flap mechanism including a first flap assembly and a second flap assembly disposed below the first flap assembly, the first flap assembly being rotatably connected to the housing; and...

[0011] A limiting structure is provided on the housing, and the second flap assembly moves along the limiting structure;

[0012] The second flap assembly flips outward before the first flap assembly, and the first flap assembly remains stationary while the second flap assembly flips, so that the flap mechanism has a half-open state where only the second flap assembly is open; the second flap assembly can drive the first flap assembly to flip outward together, so that the flap mechanism has a fully open state where both the first and second flap assemblies are open, and in the fully open state, the opening angle of the second flap assembly is equal to the opening angle of the first flap assembly.

[0013] As a preferred technical solution for the above-mentioned range hood, the range hood further includes a drive assembly, the output end of which is connected to the second flap assembly, and a locking mechanism is provided between the second flap assembly and the first flap assembly, so that the second flap assembly can drive the first flap assembly to flip together through the locking mechanism.

[0014] As a preferred technical solution for the above-mentioned range hood, the locking mechanism includes a socket disposed on one of the first flap assembly and the second flap assembly, and a pin disposed on the other of the first flap assembly and the second flap assembly. In the half-open state, the pin can be inserted and engaged with the socket to lock the first flap assembly and the second flap assembly.

[0015] As a preferred technical solution for the above-mentioned range hood, the socket is disposed at one end of the first flap assembly and the second flap assembly closer to the other, and the latch is disposed at one end of the other flap assembly closer to the first flap assembly and the second flap assembly.

[0016] As a preferred technical solution for the above-mentioned range hood, the first flap assembly includes a first flap and a first side baffle fixedly connected to the first flap, the second flap assembly includes a second flap and a second side baffle fixedly connected to the second flap, and the first flap is rotatably connected to the housing; the output end of the drive assembly is connected to the second side baffle, the socket is disposed on one of the first flap and the first side baffle, and the pin is disposed on one of the second flap and the second side baffle; or, the socket is disposed on one of the second flap and the second side baffle, and the pin is disposed on one of the first flap and the first side baffle.

[0017] As a preferred technical solution for the above-mentioned range hood, the limiting structure includes two slide rails, which are respectively disposed on both sides of the second side baffle, and the extending direction of the slide rails is the same as at least part of the movement trajectory of the second side baffle.

[0018] As a preferred technical solution for the above-mentioned range hood, the locking mechanism further includes a position detection unit, which is used to detect the relative position of the second flap assembly and the first flap assembly.

[0019] As a preferred technical solution for the above-mentioned range hood, the position detection unit is disposed at the end of the first flap assembly near the second flap assembly.

[0020] As a preferred technical solution for the above-mentioned range hood, the range hood further includes a tensioning member, one end of which is connected to the housing and the other end of which is connected to the first flap assembly; during the process of the flap mechanism changing from the closed state to the half-open state, the tensioning member can keep the first flap assembly stationary; during the process of the flap mechanism changing from the half-open state to the fully open state, the force of the driving component is greater than the tensioning force of the tensioning member, so that the second flap assembly drives the first flap assembly to flip outward.

[0021] As a preferred technical solution for the above-mentioned range hood, the tensioning component is a tension spring, an electromagnet, or a micro switch.

[0022] The beneficial effects of this utility model are:

[0023] This utility model discloses a range hood comprising a housing, a flap mechanism, and a limiting structure. The housing has a smoke inlet. The flap mechanism, used to close or open the smoke inlet, includes a first flap assembly and a second flap assembly located below it. The first flap assembly is rotatably connected to the housing. The limiting structure is located on the housing, and the second flap assembly moves along the limiting structure. The second flap assembly flips outward before the first flap assembly, and the first flap assembly remains stationary while the second flap assembly flips, thus creating a half-open state where only the second flap assembly is open. The second flap assembly can also drive the first flap assembly to flip outward together, creating a fully open state where both the first and second flap assemblies are open. In the fully open state, the opening angle of the second flap assembly is equal to the opening angle of the first flap assembly. This utility model allows for the sequential opening of the second and first flap assemblies to adapt to different smoke concentrations and overall machine settings, improving the range hood's adaptability to different operating conditions and increasing user satisfaction. Attached Figure Description

[0024] Figure 1 This is a cross-sectional structural diagram of the range hood in the closed state according to a specific embodiment of the present utility model;

[0025] Figure 2 This is a cross-sectional structural diagram of the range hood in a semi-open state according to a specific embodiment of the present utility model;

[0026] Figure 3 This is a cross-sectional structural diagram of the range hood in its fully open state according to a specific embodiment of the present utility model;

[0027] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0028] Figure 5 This is a flowchart of the control method for the flap mechanism of the range hood provided in a specific embodiment of this utility model.

[0029] In the picture:

[0030] 1. Housing; 2. Drive assembly; 3. Locking mechanism; 4. First flap; 5. First side baffle; 6. Second flap; 7. Second side baffle; 8. Position detection unit; 9. Slide rail; 10. Tensioner; 11. Hinge; 12. Fume concentration sensor; 301. Socket; 302. Pin; 303. Spring. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] like Figures 1 to 4As shown, this embodiment provides a range hood, which includes a housing 11, a flip-up mechanism, and a limiting structure. The housing 11 has a smoke inlet. The flip-up mechanism is used to close or open the smoke inlet and includes a first flip-up assembly and a second flip-up assembly. The second flip-up assembly is located below the first flip-up assembly, and the first flip-up assembly is rotatably connected to the housing 11. The limiting structure is located on the housing 11, and the second flip-up assembly moves along the limiting structure. The second flip-up assembly flips outward before the first flip-up assembly, and the first flip-up assembly remains stationary while the second flip-up assembly flips, so that the flip-up mechanism has a half-open state where only the second flip-up assembly is open. The second flip-up assembly can drive the first flip-up assembly to flip outward together, so that the flip-up mechanism has a fully open state where both the first and second flip-up assemblies are open. In the fully open state, the opening angle of the second flip-up assembly is equal to the opening angle of the first flip-up assembly. In this embodiment, the smoke inlet faces forward. It should be noted that in this embodiment, the descriptions of front, back, left, right, up, and down directions are all relative to the user when the range hood is in use.

[0038] In this embodiment, the range hood allows the second flap assembly and the first flap assembly to open sequentially. The half-open state, where only the second flap assembly is open, is suitable for situations with low oil fume concentration and the entire machine operating at a low speed. The fully open state, where both the first and second flap assemblies are open, is suitable for situations with high oil fume concentration and the entire machine operating at a high speed. Therefore, this range hood can adapt to different oil fume concentrations and machine speeds, improving its adaptability to different operating conditions and increasing user satisfaction.

[0039] The range hood also includes a drive assembly 22, which is located inside the housing 11. The output end of the drive assembly 22 is connected to the second flap assembly. A locking mechanism 3 is provided between the second flap assembly and the first flap assembly. During the outward flipping of the second flap assembly, the second flap assembly can drive the first flap assembly to flip together through the locking mechanism 3.

[0040] In this embodiment, the first and second flap assemblies of the range hood are separate structures with no connection between them. By setting a locking mechanism 3 between the second and first flap assemblies, the second and first flap assemblies can be opened sequentially to adapt to different oil fume concentrations and overall machine settings. This improves the adaptability of the range hood to different working conditions. Compared with the complex transmission structure in the prior art, the structure is simple, easy to disassemble and maintain, occupies little space, and has high user satisfaction.

[0041] like Figure 4As shown, the locking mechanism 3 includes a socket 301 disposed on one of the first flip-plate assembly and the second flip-plate assembly, and a pin 302 disposed on the other of the first flip-plate assembly and the second flip-plate assembly. During the outward flipping of the second flip-plate assembly, the pin 302 can engage with the socket 301 to lock the first flip-plate assembly and the second flip-plate assembly, thereby realizing the synchronous flipping of the first flip-plate assembly and the second flip-plate assembly in the future.

[0042] In this embodiment, during the outward flipping of the second flip assembly, when the second flip assembly flips to be directly below the first flip assembly, the pin 302 of the electromagnetic lock extends and inserts into the socket 301, locking the second flip assembly and the first flip assembly. Subsequently, the drive assembly 2 continues to drive the second flip assembly to rotate, causing the first flip assembly to rotate together.

[0043] The socket 301 is located at the end of one of the first and second flap assemblies closer to the other, and the pin 302 is located at the end of the other flap assembly closer to one of them. This configuration allows the socket 301 and pin 302 to be positioned closest to each other, thereby shortening the extension stroke of the pin 302, reducing the difficulty of aligning the pin 302 and the socket 301, and increasing the operating speed of the locking mechanism 3. In this embodiment, the socket 301 is located at the end of the first flap assembly closer to the second flap assembly, i.e., the socket 301 is located at the bottom of the first flap assembly, and the pin 302 is located at the end of the second flap assembly closer to the first flap assembly, i.e., the pin 302 is located at the top of the second flap assembly. In other feasible embodiments, the positions of the pin 302 and the socket 301 can be interchanged.

[0044] More specifically, the locking mechanism 3 also includes a mounting base and a spring 303. The spring 303 is disposed in the mounting base, with one end connected to the mounting base and the other end connected to the pin 302, for providing the pin 302 with the power to extend outward.

[0045] In this embodiment, the first flap assembly includes a first flap 4 and a first side baffle 5 fixedly connected to the first flap 4, and the second flap assembly includes a second flap 6 and a second side baffle 7 fixedly connected to the second flap 6. The first flap 4 is rotatably connected to the housing 1. The output end of the drive assembly 2 is connected to the second side baffle 7. The first side baffle 5 and the second side baffle 7 are both arranged on the left and / or right side of the range hood, that is, the first side baffle 5 is arranged perpendicular to the first flap 4, and the second side baffle 7 is arranged perpendicular to the second flap 6.

[0046] A socket 301 is disposed on either the first flap 4 or the first side baffle 5, and a pin 302 is disposed on either the second flap 6 or the second side baffle 7. To prevent interference between the locking mechanism 3 and either the first side baffle 5 or the second side baffle 7, in this embodiment, the socket 301 is disposed on the first flap 4, specifically on its inner side, and the pin 302 is disposed on the second flap 6, specifically on its inner side. When the second flap 6 is flipped to be directly below the first flap 4, i.e., when the second flap 6 and the first flap 4 are collinear in the vertical direction, the pin 302 is inserted into the socket 301, thereby locking the second flap 6 and the first flap 4. Of course, when the socket 301 is disposed on the first side baffle 5, or the pin 302 is disposed on the second side baffle 7, to avoid interference and affect the normal movement of the flap mechanism, the first side baffle 5 or the second side baffle 7 can be designed in a way that avoids interference.

[0047] Of course, in other feasible embodiments, the socket 301 can be disposed on either the second flap 6 or the second side baffle 7, and the pin 302 can be disposed on either the first flap 4 or the first side baffle 5. The specific structural configuration is similar to that described above, and will not be repeated here.

[0048] Regarding the shape selection of the first side baffle 5, in this embodiment, the first side baffle 5 can be, but is not limited to, a fan-shaped structure. The rotation center of the first side baffle 5 coincides with the rotation center of the first flap 4, ensuring the structural connection strength and smooth and consistent rotation of the first flap 4 and the first side baffle 5.

[0049] Regarding the shape selection of the second side baffle 7, in this embodiment, the second side baffle 7 can be, but is not limited to, a fan-shaped ring structure, and the rotation center of the second side baffle 7 coincides with the rotation center of the second flap 6.

[0050] The first flap 4 includes a first flap body and a first decorative panel, with the first decorative panel covering the outer surface of the first flap body. The first flap body can be made of sheet metal with good strength, thus ensuring the overall structural strength of the first flap 4. The first decorative panel can be made of glass, which is not only aesthetically pleasing but also easy to clean. Optionally, the first flap body and the first decorative panel can be fixed together by adhesive bonding.

[0051] Similarly, the second flap 6 includes a second flap body and a second decorative panel, with the second decorative panel covering the outer surface of the second flap body. The second flap body can be made of sheet metal with good strength, thus ensuring the overall structural strength of the second flap 6. The second decorative panel can be made of glass, which is not only aesthetically pleasing but also easy to clean. Optionally, the second flap body and the second decorative panel can be fixed together by adhesive bonding.

[0052] In this embodiment, the first flap assembly is connected to the housing 1 via a hinge 11 to achieve the flipping motion of the first flap assembly. Specifically, the first flap body and the first side baffle 5 are respectively connected to the hinge 11. The connection method of the hinge 11 is simple in structure, low in cost, and easy to implement.

[0053] When the flap mechanism is opened, the drive assembly 2 drives the second flap 6 to flip outward via the second side baffle 7. The second flap 6 rotates a certain angle to a half-open state, such as... Figure 2 As shown; at this time, the second flap 6 is located directly below the first flap 4, and the pin 302 of the locking mechanism 3 extends into the socket 301, locking the second flap 6 and the first flap 4; the drive assembly 2 continues to push the second side baffle 7 to rotate, and the second flap 6 and the first flap 4 together flip outward until they are fully open, as shown. Figure 3 As shown.

[0054] The half-open state corresponds to low oil fume concentration. In this state, the negative pressure area outside the smoke inlet is smaller, resulting in slightly weaker smoke extraction. This corresponds to the low setting of the range hood, making it suitable for cooking with minimal oil fumes. The fully open state corresponds to high oil fume concentration. In this state, the negative pressure area outside the smoke inlet is largest, resulting in the best smoke extraction. This corresponds to the high setting or stir-fry setting of the range hood, making it suitable for cooking with heavy oil fumes. By setting a locking mechanism 3 between the first and second flap components, the second flap 6 and the first flap 4 can be flipped open sequentially, thus adapting to different oil fume concentrations and overall machine settings, improving the range hood's adaptability to different operating conditions.

[0055] The locking mechanism 3 in this embodiment also includes a position detection unit 8. The position detection unit 8 is used to detect the relative position of the second flap assembly and the first flap assembly, so as to accurately lock the first flap 4 and the second flap 6. The position detection unit 8 can be, but is not limited to, a positioning accuracy sensor, to detect whether the second flap 6 has flipped into place, that is, whether the second flap 6 is located directly below the first flap 4, so as to more accurately control the action of the locking mechanism 3.

[0056] In accordance with the above structure, the position detection unit 8 is located at the end of the first flap assembly near the second flap assembly. Specifically, the position detection unit 8 is located at the bottom of the first flap 4, enabling it to quickly and accurately detect the position of the second flap 6.

[0057] Since there is no connecting structure between the second flap assembly and the first flap assembly, the range hood also includes a limiting structure to ensure the structural stability and reliable movement of the second flap assembly. This limiting structure is mounted on the housing 1 and constrains the movement trajectory of the second flap assembly, allowing it to move along the limiting structure. By setting the limiting structure, the uniqueness of the movement trajectory of the second flap 6 before it locks with the first flap 4 can be guaranteed, ensuring the stability of the movement of the second flap 6 before it opens to the half-open state, thereby ensuring the reliability of the flap mechanism's movement.

[0058] The limiting structure in this embodiment includes two slide rails 9, which are respectively disposed on both sides of the second side baffle 7, and the extending direction of the slide rails 9 is the same as at least part of the movement trajectory of the second side baffle 7. The space formed between the two slide rails 9 is used to constrain the movement trajectory of the second side baffle 7. When the second side baffle 7 moves, it moves along the two slide rails 9, which greatly improves the stability and reliability of the movement. The extension length of the slide rails 9 is preferably sufficient to constrain the second side baffle 7 from the closed state to the half-open state. After the second flap assembly is locked with the first flap assembly, the second side baffle 7 disengages from the slide rails 9, and the constraint of the limiting structure is not required.

[0059] The range hood in this embodiment also includes a tensioning member 10. One end of the tensioning member 10 is connected to the housing 1, and the other end is connected to the first flap assembly. The tensioning member 10 exerts a certain tensioning force on the first flap assembly. To improve the timeliness of the movement of the first flap assembly, the tensioning member 10 in this embodiment is directly connected to the first flap 4. During the process of the flap mechanism changing from the closed state to the half-open state, the tensioning member 10 always tensions the first flap 4. This tensioning force is greater than the driving force of the drive assembly 2, so the first flap 4 remains stationary, and only the second flap 6 flips outward. During the process of the flap mechanism changing from the half-open state to the fully open state, after the second flap 6 and the first flap 4 are locked by the locking mechanism 3, and the force transmitted by the drive assembly 2 to the first flap 4 through the locking mechanism 3 is greater than the constraint force of the tensioning member 10 on the first flap 4, the first flap 4 will then follow the second flap 6 and flip outward until it reaches the fully open state. When the flap mechanism is closed from the fully open state, the tensioning member 10 provides a restoring force to the first flap assembly, which can increase the speed at which the first flap assembly flips inward, accelerate the closing process of the flap mechanism, and also tighten the first flap assembly in the closed state to ensure that there is no gap between the first flap assembly and the housing 1, which improves the appearance and prevents dust and fumes from entering the interior of the housing 1.

[0060] Specifically, the tensioning element 10 can be, but is not limited to, a tension spring, an electromagnet, or a micro switch. In this embodiment, the tensioning element 10 is an electromagnet.

[0061] The drive component 2 in this embodiment can be a push rod motor, a linear output cylinder, or a linear output motor, etc. A push rod motor is preferred in this embodiment because it has low noise, low energy consumption, and high thrust during use. It should be noted that all mechanisms capable of linear drive are within the scope of protection of this application.

[0062] In this embodiment, an oil fume concentration sensor 12 is provided on the outer wall of the housing 1 below the second flap 6. The oil fume concentration sensor is used to detect the oil fume concentration. By providing the oil fume concentration sensor 12, the opening state of the flap mechanism and the overall machine speed can be controlled according to the oil fume concentration. Specifically, a decorative panel is also provided on the outer wall of the housing 1 below the second flap 6. The decorative panel is made of glass, and the oil fume concentration sensor 12 is installed on the glass, near the lower end of the range hood.

[0063] This embodiment also provides a control method for the flap mechanism of a range hood, such as... Figure 5 As shown, the specific steps include:

[0064] S1. Read the first oil fume concentration value of the oil fume concentration sensor 12;

[0065] S2. Determine whether the first oil fume concentration value is greater than the first preset value. If so, the fan is switched to the low gear, and the drive component 2 drives the second flap 6 to flip outward to the half-open state.

[0066] S3. Read the second oil fume concentration value of oil fume concentration sensor 12;

[0067] S4. Determine whether the second oil fume concentration value is greater than the second preset value. If so, the locking mechanism 3 is activated to lock the second flap 6 and the first flap 4. The driving component 2 drives the second flap 6 and the first flap 4 to flip outward together to the fully open state.

[0068] S5. Determine whether the second oil fume concentration value is greater than the third preset value. If yes, switch the fan to the stir-fry mode; otherwise, switch the fan to the high-power mode.

[0069] The control method of the above-mentioned flap mechanism uses the oil fume concentration sensor 12 to monitor the oil fume concentration and control the opening of the first flap 4 and the second flap 6, as well as the range hood speed, to adapt to different working conditions, improve the intelligence of the range hood, and thus enhance user satisfaction.

[0070] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, based on the concept of this utility model, there will be changes in the specific implementation methods and application scope. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A range hood, characterized in that, include: The housing (1) is provided with a smoke inlet; A flap mechanism is used to close or open the smoke inlet. The flap mechanism includes a first flap assembly and a second flap assembly disposed below the first flap assembly. The first flap assembly is rotatably connected to the housing (1). as well as, A limiting structure is provided on the housing (1), and the second flap assembly moves along the limiting structure; The second flap assembly flips outward before the first flap assembly, and the first flap assembly remains stationary while the second flap assembly flips, so that the flap mechanism has a half-open state where only the second flap assembly is open; the second flap assembly can drive the first flap assembly to flip outward together, so that the flap mechanism has a fully open state where both the first and second flap assemblies are open, and in the fully open state, the opening angle of the second flap assembly is equal to the opening angle of the first flap assembly.

2. The range hood as described in claim 1, characterized in that, The range hood also includes: The drive component (2) is connected to the output end of the second flip plate component. A locking mechanism (3) is provided between the second flip plate component and the first flip plate component. The second flip plate component can drive the first flip plate component to flip together through the locking mechanism (3).

3. The range hood as described in claim 2, characterized in that, The locking mechanism (3) includes a socket (301) disposed on one of the first flap assembly and the second flap assembly, and a pin (302) disposed on the other of the first flap assembly and the second flap assembly. In the half-open state, the pin (302) can be inserted and engaged with the socket (301) to lock the first flap assembly and the second flap assembly.

4. The range hood as described in claim 3, characterized in that, The socket (301) is located at one end of the first flap assembly and the second flap assembly closer to the other, and the pin (302) is located at one end of the other flap assembly closer to the other.

5. The range hood as described in claim 3, characterized in that, The first flap assembly includes a first flap (4) and a first side baffle (5) fixedly connected to the first flap (4). The second flap assembly includes a second flap (6) and a second side baffle (7) fixedly connected to the second flap (6). The first flap (4) is rotatably connected to the housing (1). The output end of the drive assembly (2) is connected to the second side baffle (7). The socket (301) is disposed on one of the first flap (4) and the first side baffle (5). The pin (302) is disposed on one of the second flap (6) and the second side baffle (7). Alternatively, the socket (301) is disposed on one of the second flap (6) and the second side baffle (7). The pin (302) is disposed on one of the first flap (4) and the first side baffle (5).

6. The range hood as described in claim 5, characterized in that, The limiting structure includes two slide rails (9), which are respectively disposed on both sides of the second side baffle (7), and the extension direction of the slide rails (9) is the same as at least part of the movement trajectory of the second side baffle (7).

7. The range hood as described in claim 2, characterized in that, The locking mechanism (3) further includes a position detection unit (8), which is used to detect the relative position of the second flap assembly and the first flap assembly.

8. The range hood as described in claim 7, characterized in that, The position detection unit (8) is located at the end of the first flap assembly near the second flap assembly.

9. The range hood according to any one of claims 2-8, characterized in that, The range hood also includes a tensioning member (10), one end of which is connected to the housing (1) and the other end is connected to the first flap assembly; During the process of the flip mechanism changing from the closed state to the half-open state, the tensioning member (10) can keep the first flip assembly stationary; during the process of the flip mechanism changing from the half-open state to the fully open state, the force of the driving component (2) is greater than the tensioning force of the tensioning member (10), so that the second flip assembly drives the first flip assembly to flip outward.

10. The range hood as described in claim 9, characterized in that, The tensioning element (10) is a tension spring, an electromagnet, or a micro switch.

Images