Range hood

Abstract

The utility model discloses a kind of range hood, including range hood main body and flap assembly;Range hood main body has suction panel, and suction panel is equipped with suction port, and the upper edge of suction port has oil guide piece;Flap assembly is arranged at the back side of suction panel, and flap assembly includes driving structure and flap, and driving structure is used to drive flap rotation, so that flap opens or closes suction port, when flap closes suction port, flap has the first face with the upper surface of oil guide piece contact, driving structure has the maximum rotation angle of driving flap rotation to the direction of opening suction port, when flap rotates to the direction of opening suction port to maximum angle, flap has the second face with the back plate of range hood main body contact.The range hood of the utility model can avoid flap excessive rotation and extrude damage oil guide piece or range hood main body, so as to improve the structural stability of range hood.

Description

Technical Field

[0001] This utility model relates to the field of smoke hood technology, specifically to a smoke hood. Background Technology

[0002] Range hoods extract cooking fumes through air inlets, which are normally open, allowing users to see the internal structure and affecting the aesthetics. Current technology uses a flap inside the range hood to open or close the inlet, driven by a motor. The motor is typically configured to stop after a preset travel distance, stopping once the flap has fully opened or closed the inlet. However, if the motor malfunctions and fails to stop in time, the flap may over-rotate, potentially deforming and damaging the internal structure of the range hood. Utility Model Content

[0003] The purpose of this utility model is to provide a range hood that solves the above-mentioned technical problems.

[0004] The range hood proposed in this utility model includes a range hood body and a flap assembly; the range hood body has an air intake panel with an air intake port on the air intake panel and an oil guide on the upper edge of the air intake port; the flap assembly is located on the rear side of the air intake panel and includes a drive structure and a flap; the drive structure is used to drive the flap to rotate so that the flap opens or closes the air intake port; when the flap closes the air intake port, the flap has a first surface in contact with the upper surface of the oil guide; the drive structure has a maximum rotation angle to drive the flap to rotate in the direction of opening the air intake port; when the flap rotates to the maximum angle in the direction of opening the air intake port, the flap has a second surface in contact with the rear plate of the range hood body.

[0005] According to one embodiment of the present invention, the driving structure can drive the flap to open at any angle, and the gap between the flap and the upper edge of the air inlet forms an effective air inlet for the range hood.

[0006] According to one embodiment of the present invention, an air guide ring is provided around the edge of the air intake, the air guide ring is in a constricted shape, the upper edge of the air guide ring is provided with an upward flange, the upward flange is inclined from front to back, and the oil guide is connected to the upward flange.

[0007] According to one embodiment of the present invention, the oil guide includes a connecting plate and an oil guide plate. The connecting plate is connected to the upper flange, and the oil guide plate extends to the rear side of the air intake. The inclination angle of the first surface is adapted to the oil guide plate.

[0008] According to one embodiment of the present invention, the lower edge of the air guide ring is provided with a downward flange, which is inclined downward from front to back, and the flap is provided below the downward flange.

[0009] According to one embodiment of the present invention, a reinforcing plate is provided on the suction panel, and a clearance opening is provided on the reinforcing plate to avoid the suction port. A first extension plate and a second extension plate are provided at the lower edge of the clearance opening. The first extension plate extends to the rear side of the suction port, and the second extension plate is connected to the rear edge of the first extension plate. The second extension plate is inclined from top to bottom and rearward. The flap and the second extension plate are rotatably connected by a hinge.

[0010] According to one embodiment of the present invention, the part of the flap that is aligned with the air intake is arc-shaped, and the upper edge of the flap extends upward to form a first extension. The second extension contacts the oil guide when the flap closes the air intake. The surface of the first extension that contacts the oil guide is the first surface.

[0011] According to one embodiment of the present invention, a second extension and a third extension are sequentially connected to the first extension. The second extension is connected to the first extension and extends backward. The third extension is connected to the rear edge of the second extension and extends forward. The second extension and the third extension form a V-shape. The surface of the third extension that contacts the rear plate of the main body of the smoke hood is the second surface.

[0012] According to one embodiment of the present invention, the drive structure includes a drive motor, a first connecting rod, and a second connecting rod. The drive motor is located on the rear side of the suction panel. The output end of the drive motor is connected to the first connecting rod. The first connecting rod is connected to the input end of the second connecting rod. A connecting seat is provided on the flip plate. The output end of the second connecting rod is connected to the connecting seat.

[0013] According to one embodiment of the present invention, a motor cover is provided on the rear side of the suction panel, and the drive motor is located inside the motor cover.

[0014] Compared with the prior art, the smoke hood of this utility model has the following advantages:

[0015] The range hood of this utility model has a drive structure located on the back of the suction panel that can drive a flap to rotate, so that the flap can close or open the air intake on the suction panel. By closing the air intake through the flap, the user cannot see the internal structure of the range hood through the air intake, thus ensuring the overall aesthetics of the range hood. At the same time, the drive structure can open the flap to any angle, changing the size of the effective air inlet of the range hood formed by the gap between the flap and the upper edge of the air intake, thereby adjusting the air volume, controlling the amount of oil fumes drawn in and out, and adapting to different amounts and flow conditions of oil fumes.

[0016] Furthermore, the drive structure is electrically connected to the main control module of the range hood. The main control module can control the power supply to or off of the drive structure and can also detect the operating current of the drive structure. When the first side of the flap contacts the oil guide and when the second side of the flap contacts the main body of the range hood, if the drive structure does not stop running in time and continues to drive the flap to rotate, the flap will continue to rotate and will be subject to the resistance caused by the oil guide and the main body of the range hood. This resistance will be transmitted to the drive structure, at which time the drive structure will generate an impedance current. After the main control module detects the change in the current of the drive structure, it will forcibly cut off the power to the drive structure to stop the flap from rotating. This can prevent the flap from rotating excessively and squeezing and damaging the oil guide or the main body of the range hood, thereby improving the structural stability of the range hood. Attached Figure Description

[0017] Figure 1 This is a structural cross-sectional view of the smoke hood of this utility model;

[0018] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0019] Figure 3 This is a structural cross-sectional view of another embodiment of the smoke hood of this utility model;

[0020] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0021] Figure 5 This is a schematic diagram of the structure of the flap assembly and the suction panel in this utility model;

[0022] Figure 6 for Figure 5 A magnified view of a section at point C.

[0023] In the diagram: 1. Main body of the range hood, 11. Suction panel, 111. Suction outlet, 112. Air guide ring, 113. Upper flange, 114. Lower flange, 12. Oil guide component, 121. Connecting plate, 122. Oil guide plate, 13. Reinforcing plate, 131. First extension plate, 132. Second extension plate, 14. Hinge, 2. Flip plate assembly, 21. Drive structure, 211. Drive motor, 212. First connecting rod, 213. Second connecting rod, 214. Connecting seat, 215. Motor cover, 22. Flip plate, a. First side, b. Second side.

[0024] The implementation and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] To further understand the content, features, and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0029] This utility model discloses a smoke hood. Please refer to [link / reference]. Figures 1 to 6 The range hood proposed in this utility model includes a range hood body 1 and a flap assembly 2. The range hood body 1 has a suction panel 11, on which a suction port 111 is provided, and an oil guide 12 is provided on the upper edge of the suction port 111. The flap assembly 2 is located on the rear side of the suction panel 11. The flap assembly 2 includes a drive structure 21 and a flap 22. The drive structure 21 is used to drive the flap 22 to rotate so that the flap 22 opens or closes the suction port 111. When the flap 22 closes the suction port 111, the flap 22 has a first surface a that contacts the upper surface of the oil guide 12. The drive structure 21 has a maximum rotation angle that drives the flap 22 to rotate in the direction of opening the suction port 111. When the flap 22 rotates to the maximum angle in the direction of opening the suction port 111, the flap 22 has a second surface b that contacts the rear plate of the range hood body 1.

[0030] In this embodiment, the air intake 111 passes through the air intake panel 11 and extends laterally. During the operation of the range hood, the air intake 111 faces the user side so that the air intake 111 can promptly draw in the cooking fumes.

[0031] During cooking, the drive mechanism 21 drives the flap 22 to rotate, opening the air intake 111 and allowing cooking fumes to be drawn into the range hood. When cooking is finished, the drive mechanism 21 drives the flap 22 to rotate in the opposite direction, closing the air intake 111. This prevents the user from seeing the internal structure of the range hood through the air intake 111, maintaining the overall aesthetics of the range hood. Furthermore, closing the air intake 111 when the range hood is not in use prevents insects and other foreign objects from entering and affecting its operation, thus improving the protection of the internal structure. The side of the flap 22 facing the user can also be cleaned to keep it clean.

[0032] The oil guide 12 is used to receive the oil falling from above the air intake 111 to prevent the oil from dripping out of the range hood. After the oil drips onto the oil guide 12, the oil guide 12 can make the oil continue to flow along a path away from the air intake 111, so that the oil can eventually avoid the air intake 111 and flow to the oil cup at the bottom of the range hood.

[0033] The flap assembly 22 is installed below the lower edge of the air intake 111. When the flap 22 closes the air intake 111, the first surface a of the flap 22 abuts against the upper surface of the oil guide 12. When the flap 22 rotates to its maximum rotation angle in the direction of opening the air intake 111, the second surface b of the flap 22 abuts against the rear plate of the range hood body 1. The drive structure 21 is electrically connected to the main control module of the range hood. The main control module can control the drive structure 21 to be powered on or off, to rotate forward or backward, and to detect the operating current of the drive structure 21. When the first surface a of the flap 22 contacts the oil guide 12, and when the second surface b of the flap 22 contacts the main body 1 of the range hood, if the drive structure 21 does not stop operating in time and continues to drive the flap 22 to rotate, the flap 22 will continue to rotate and will be subject to resistance caused by the oil guide 12 and the main body 1 of the range hood. This resistance will be transmitted to the drive structure 21, at which time an impedance current will be generated in the drive structure 21. After the main control module detects the change in current in the drive structure 21, it will forcibly cut off the power to the drive structure 21 to stop the flap 22 from rotating. Thus, the excessive rotation of the flap 22 can be avoided from squeezing and damaging the oil guide 12 or the main body 1 of the range hood, thereby improving the structural stability of the range hood. The range hood of this utility model, such as Figure 1 and Figure 2 As shown, the drive structure 21 can drive the flap 22 to open at any angle, and the gap between the flap 22 and the upper edge of the air intake 111 forms the effective air intake of the smoke hood.

[0034] During cooking, the drive structure 21 drives the flap 22 to rotate, opening the air intake 111. During this process, the drive structure 21 controls the rotation angle of the flap 22, correspondingly changing the size of the effective air intake formed between the flap 22 and the upper edge of the air intake 111. This adjusts the airflow and controls the amount of smoke extracted, adapting to different smoke generation and flow conditions. For example, when the smoke generation is high, the effective air intake area can be appropriately increased to improve smoke extraction efficiency. Simultaneously, the noise generated during smoke extraction is controlled. Obviously, a larger extraction volume per unit time results in relatively higher noise levels, and a smaller extraction volume per unit time results in relatively lower noise levels. This satisfies both the user's requirements for airflow and noise control, improving the comfort of using the range hood.

[0035] The rotating mounting end of the flap 22 is its lower end, and the distance between its rotating mounting axis and the lower edge of the air intake 111 remains constant. This reduces the flow of oil fumes through the gap between the lower end of the flap 22 and the lower edge of the air intake 111 when the air intake 111 is opened by rotating the flap 22. Furthermore, during the suction and exhaust process, the flap 22 tilts backward from its lower end to its upper end. This tilted flap 22 guides the oil fumes. When oil fumes from the front of the suction panel 11 are drawn into the air intake 111, the flap 22 blocks and guides the oil fumes entering the air intake 111, preventing them from impacting the wall and guiding them upward into the purification chamber of the range hood.

[0036] The rotation angle of the flap 22 can be any angle within the range of 0°-90°, specifically 0°, 10°, 20°, 30°, 40°, 45°, 50°, 60°, 65°, and 70°. When the rotation angle is 0°, the flap 22 is parallel to the back of the suction panel 11, and the flap 22 closes the suction port 111; when the rotation angle of the flap 22 is 90°, the flap 22 is perpendicular to the back of the suction panel 11, and the suction port 111 is at its maximum open angle.

[0037] The smoke hood of this utility model, such as Figures 1 to 6 As shown, an air guide ring 112 is provided around the edge of the air intake 111. The air guide ring 112 is constricted. An upper flange 113 is provided on the upper edge of the air guide ring 112. The upper flange 113 is inclined upward from front to back. The oil guide 12 is connected to the upper flange 113.

[0038] During cooking, when the fumes are extracted, they enter through the air intake 111 and flow into the annular opening structure formed by the guide ring 112. The flow area of ​​the guide ring 112 gradually narrows from the side adjacent to the air intake 111 to the side away from the air intake 111. This narrowing structure of the guide ring 112 increases the flow velocity of the fumes passing through the air intake 111. As the fumes pass through the narrowing opening, the cross-sectional area decreases, and the flow velocity increases accordingly, which helps improve the transmission efficiency of the fumes within the system and reduces the residence time of the fumes near the air intake 111. The upturned edge 113 allows for the fixed connection of the oil guide component 12, thereby improving the installation stability of the oil guide component 12.

[0039] The smoke hood of this utility model, such as Figures 1 to 6 As shown, the oil guiding component 12 includes a connecting plate 121 and an oil guiding plate 122. The connecting plate 121 is connected to the upper flange 113, and the oil guiding plate 122 extends towards the rear side of the air intake 111. The inclination angle of the first surface a is adapted to the oil guiding plate 122. The oil guiding plate 122 can guide the oil flowing through the oil guiding component 12 towards the rear side of the air intake 111, so that the oil can form a certain distance with the air intake 111 as it falls towards the bottom of the range hood body 1, further preventing the oil from dripping out of the air intake 111. The inclination angle of the first surface a is adapted to the oil guiding plate 122, so that when the flap 22 closes the air intake 111, the contact area between the first surface a and the oil guiding plate 122 can be increased, thereby improving the closing effect of the flap 22 on the air intake 111 and reducing the interaction pressure between the first surface a and the oil guiding plate 122, so as to avoid the flap 22 and the oil guiding plate 122 from easily deforming after repeated contact.

[0040] The smoke hood of this utility model, such as Figures 1 to 6 As shown, the lower edge of the air guide ring 112 is provided with a downward-curved edge 114, which is inclined downward from front to back. The flap 22 is located below the downward-curved edge 114. The upper flange 113 and the lower flange 114 combine on the upper and lower sides of the air intake 111 to form a flared structure. This flared structure can guide and diffuse the oil fumes flowing out of the air guide ring 112. When the oil fumes pass through the flared structure, the space increases, which can reduce the flow velocity of the oil fumes to a certain extent, making the airflow more stable and reducing airflow fluctuations and turbulence.

[0041] The smoke hood of this utility model, such as Figures 1 to 6As shown, the suction panel 11 is provided with a reinforcing plate 13, and the reinforcing plate 13 has a clearance opening to avoid the suction port 111. The lower edge of the clearance opening is provided with a first extension plate 131 and a second extension plate 132. The first extension plate 131 extends to the rear side of the suction port 111, and the second extension plate 132 is connected to the rear edge of the first extension plate 131. The second extension plate 132 is inclined from top to bottom and rearward. The flap 22 is rotatably connected to the second extension plate 132 by a hinge 14. The reinforcing plate 13 is connected to the rear side of the suction panel 11 and can strengthen the part of the suction panel 11 around the suction port 111, preventing the suction panel 11 from easily deforming, so that the suction area has sufficient structural strength to support the flap assembly 2. The first extension plate 131 connects the lower edge of the clearance opening to the second extension plate 132. A part of the hinge 14 is connected to the second extension plate 132 and another part is connected to the flap 22. Thus, the force generated when the flap 22 moves can be transmitted to the reinforcing plate 13, so that the reinforcing plate 13 can effectively support the movement of the flap 22.

[0042] The smoke hood of this utility model, such as Figure 1 and Figure 2 As shown, the portion of the flap 22 aligned with the air intake 111 is arc-shaped. A first extension extends upward from the upper edge of the flap 22, and a second extension contacts the oil guide 12 when the flap 22 closes the air intake 111. The surface of the first extension contacting the oil guide 12 is the first surface a. When the rotation angle of the flap 22 in the direction of opening the air intake 111 is small, even if the air intake 111 is open, a portion of the flap 22 remains aligned with the air intake 111. In this case, the fumes flowing into the air intake 111 will first hit the flap 22 and then turn upwards. The arc-shaped portion of the flap 22 aligned with the air intake 111 allows the fumes to hit the flap 22 and turn more smoothly, reducing flow rate loss during the turning process and ensuring the flow rate of the fumes after passing through the air intake 111.

[0043] The smoke hood of this utility model, such as Figure 3 and Figure 4 As shown, a second extension and a third extension are connected sequentially to the first extension. The second extension is connected to the first extension and extends backward. The third extension is connected to the rear edge of the second extension and extends forward. The second extension and the third extension form a V-shape. The surface of the third extension that contacts the rear plate of the main body 1 of the smoke machine is the second surface b.

[0044] The third extension increases the contact area between the flap 22 and the rear plate of the range hood body 1, preventing the flap 22 from squeezing and scratching the rear plate of the range hood body 1. The second and third extensions form a V-shape, creating a certain deformation space between the third and second extensions. When the third extension contacts the rear plate of the range hood body 1, the reaction force exerted by the range hood body 1 on the third extension can be buffered through this deformation space, thereby reducing the impact force on both the flap 22 and the rear plate of the range hood body 1, and improving the structural stability of the flap assembly 2 and the range hood body 1.

[0045] The smoke hood of this utility model, such as Figure 5 As shown, the drive structure 21 includes a drive motor 211, a first connecting rod 212, and a second connecting rod 213. The drive motor 211 is located on the rear side of the suction panel 11. The output end of the drive motor 211 is connected to the first connecting rod 212. The first connecting rod 212 is connected to the input end of the second connecting rod 213. A connecting seat 214 is provided on the flap 22. The output end of the second connecting rod 213 is connected to the connecting seat 214.

[0046] During cooking, the drive motor 211 is activated, driving the first connecting rod 212 to rotate. The rotating first connecting rod 212 pulls the second connecting rod 213 to move, which in turn pulls the flap 22 to rotate, thus opening or closing the air intake 111. During control, the drive motor 211 allows the flap 22 to rotate at any angle, enabling the air intake 111 to be adjusted at any angle to meet the needs of airflow and noise control.

[0047] The connecting seat 214 is installed in the middle of the back of the flap 22 so that under the drive of the drive structure 21, the flap 22 is subjected to balanced force, and the flap 22 rotates at the same time, so as to open or close the air inlet 111 at the same time.

[0048] Both ends of the second connecting rod 213 are rotatably connected to the first connecting rod 212 and the connecting seat 214 respectively via connecting shafts. One end of the connecting seat 214 can be fixedly connected to the flap 22 with screws, and the other end can be rotatably connected to the second connecting rod 213 via a connecting shaft.

[0049] The smoke hood of this utility model, such as Figure 5 As shown, a motor cover 215 is provided on the rear side of the suction panel 11, and the drive motor 211 is located inside the motor cover 215. The motor cover 215 can hide and protect the motor, preventing oil and fumes from easily adhering to the motor and affecting its operation, thereby ensuring the motor's operating performance.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements 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 range hood body (1) has a suction panel (11) and a suction port (111) on the suction panel (11). The upper edge of the suction port (111) has an oil guide (12). Flip plate assembly (2), the flip plate assembly (2) is located on the rear side of the air intake panel (11), the flip plate assembly (2) includes a drive structure (21) and a flip plate (22), the drive structure (21) is used to drive the flip plate (22) to rotate so that the flip plate (22) opens or closes the air intake (111), when the flip plate (22) closes the air intake (111), the flip plate (22) has a first surface (a) that contacts the upper surface of the oil guide (12), the drive structure (21) has a maximum rotation angle that drives the flip plate (22) to rotate in the direction of opening the air intake (111), when the flip plate (22) rotates to the maximum angle in the direction of opening the air intake (111), the flip plate (22) has a second surface (b) that contacts the rear plate of the main body of the range hood (1).

2. The range hood according to claim 1, characterized in that, The drive structure (21) can drive the flap (22) to open at any angle, and the gap between the flap (22) and the upper edge of the air inlet (111) forms an effective air inlet for the smoke machine.

3. The smoke hood according to claim 1, characterized in that, The air intake (111) has an air guide ring (112) around its edge. The air guide ring (112) is constricted. The upper edge of the air guide ring (112) has an upper flange (113). The upper flange (113) is inclined upward from front to back. The oil guide (12) is connected to the upper flange (113).

4. The range hood according to claim 3, characterized in that, The oil guide (12) includes a connecting plate (121) and an oil guide plate (122). The connecting plate (121) is connected to the upper flange (113). The oil guide plate (122) extends to the rear side of the air intake (111). The tilt angle of the first surface (a) is adapted to the oil guide plate (122).

5. The range hood according to claim 3, characterized in that, The lower edge of the air guide ring (112) is provided with a lower flange (114), which is inclined downward from front to back, and the flap (22) is located below the lower flange (114).

6. The range hood according to claim 1, characterized in that, The suction panel (11) is provided with a reinforcing plate (13), and the reinforcing plate (13) is provided with a clearance opening to avoid the suction port (111). The lower edge of the clearance opening is provided with a first extension plate (131) and a second extension plate (132). The first extension plate (131) extends to the rear side of the suction port (111), and the second extension plate (132) is connected to the rear edge of the first extension plate (131). The second extension plate (132) is inclined from top to bottom and rearward. The flap (22) and the second extension plate (132) are rotatably connected by a hinge (14).

7. The smoke hood according to claim 1, characterized in that, The portion of the flap (22) that is aligned with the air intake (111) is arc-shaped. The upper edge of the flap (22) extends upward with a first extension portion. When the flap (22) closes the air intake (111), the first extension portion contacts the oil guide (12). The surface of the first extension portion that contacts the oil guide (12) is the first surface (a).

8. The range hood according to claim 7, characterized in that, The first extension is connected in sequence with a second extension and a third extension. The second extension is connected to the first extension. The second extension extends backward. The third extension is connected to the rear edge of the second extension. The third extension extends forward. The second extension and the third extension form a V-shape. The surface of the third extension that contacts the rear plate of the main body (1) of the smoke machine is the second surface (b).

9. The range hood according to claim 1, characterized in that, The drive structure (21) includes a drive motor (211), a first connecting rod (212), and a second connecting rod (213). The drive motor (211) is located on the rear side of the suction panel (11). The output end of the drive motor (211) is connected to the first connecting rod (212). The first connecting rod (212) is connected to the input end of the second connecting rod (213). The flap (22) is provided with a connecting seat (214). The output end of the second connecting rod (213) is connected to the connecting seat (214).

10. The range hood according to claim 9, characterized in that, The rear side of the suction panel (11) is provided with a motor cover (215), and the drive motor (211) is located inside the motor cover (215).

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