A range hood

Abstract

The utility model provides an oil fume extractor. The oil fume extractor comprises a wind cabinet assembly and a air inlet adjusting assembly. The upper portion of the wind cabinet assembly is provided with a first air vent. The air inlet adjusting assembly comprises a cylinder and a blade. The cylinder is arranged at the first air vent along the length direction of the cylinder. The blade is arranged on the cylinder to form an air suction inlet on the cylinder. The cylinder and / or the blade are rotatably arranged to adjust the ventilation area of the air suction inlet and the airflow direction through the air suction inlet. The cylinder and / or the blade can be flexibly rotated to adjust the ventilation area of the flow channel formed between the air suction inlet and the first air vent and the airflow direction. The air volume, air speed and direction of the oil fume flowing into the oil fume extractor can be adjusted. The oil fume extractor can be applied to different use scenarios, and the flexibility, practicality and applicability of the oil fume extractor are effectively improved.

Description

Technical Field

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

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. Range hoods can adopt a dual air inlet design, with the lower air inlet drawing out fumes near the cookware, while the upper air inlet provides secondary extraction of rising fumes.

[0003] However, current top air inlets are usually fixed grilles or deflectors, and their air intake area cannot be dynamically adjusted according to the concentration of cooking fumes. Specifically, top air inlets with a fixed air intake area tend to lead to redundant waste of suction power when the concentration of cooking fumes is low, while they tend to lead to insufficient suction power when the concentration of cooking fumes is high, resulting in poor suction and exhaust performance. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a range hood is provided, the technical solution of which is as follows.

[0005] The range hood includes a blower unit and an air vent adjustment assembly. A first air vent is located at the top of the blower unit. The air vent adjustment assembly includes a cylindrical body and blades. The cylindrical body is positioned along its length at the first air vent, and the blades are mounted on the cylindrical body to form an air intake. The cylindrical body and / or the blades are rotatably mounted to adjust the ventilation area of ​​the air intake and the direction of the airflow through it.

[0006] In this utility model of a range hood, the blades in the air vent adjustment component can be mounted on the cylindrical body, thus forming an air intake on the cylindrical body. When the cylindrical body is positioned at the first ventilation opening, the air intake and the first ventilation opening can be correspondingly arranged to form a flow channel for cooking fumes. The cylindrical body and / or the blades can rotate flexibly, allowing the air intake and the first ventilation opening to be staggered. This allows adjustment of the ventilation area and airflow direction of the flow channel formed between the air intake and the first ventilation opening, thereby adjusting the air volume, speed, and direction of the cooking fumes flowing into the range hood. This makes the range hood suitable for various cooking environments. The application scenarios for this feature are as follows: When dealing with low concentrations of cooking fumes, the cross-sectional area of ​​the air intake can be reduced, thereby increasing the airflow velocity as the fumes pass through the intake and allowing the intake to face away from the range hood. This effectively captures overflowing fumes and avoids redundant waste of the range hood's suction power. Conversely, when dealing with high concentrations of cooking fumes, the cross-sectional area of ​​the air intake can be increased, thereby increasing the airflow volume as the fumes pass through the intake and allowing the intake to face the fumes. This enables rapid extraction of fumes, effectively ensuring the range hood's extraction performance and enhancing its flexibility, practicality, and applicability.

[0007] For example, the vent adjustment assembly further includes a drive component, the output end of which is connected to the cylinder body, and the drive component drives the cylinder body to rotate; and / or, the output end of the drive component is connected to the blades, and the drive component drives the blades to rotate. In this way, the drive component can drive the cylinder body and / or the blades to rotate, thereby adjusting the cross-sectional area of ​​the air intake vent connected to the first ventilation opening of the air handling unit assembly, as well as the direction of the airflow through the air intake vent. This ensures that the air intake vent can be flexibly adjusted, while also effectively improving the automation level of the range hood and enhancing the user experience and convenience.

[0008] For example, the cylinder has an arc-shaped portion exposed to the blower assembly and facing downwards, with at least some blades disposed on the arc-shaped portion. This allows the formed air intake to face the cooktop below the range hood, ensuring that when cooking with the cooktop, the generated fumes can flow into the blower assembly through the air intake via the shortest path, effectively guaranteeing the range hood's extraction performance.

[0009] For example, the cylinder is rotatably positioned at the first vent, and the blades are fixedly mounted on the cylinder. Driven by the cylinder, the blades adjust the ventilation area of ​​the air intake and the direction of the airflow through it. In this way, the cylinder can drive the blades to rotate synchronously, thus ensuring flexible adjustment of the air intake while simplifying the structure of the air intake adjustment component and reducing its manufacturing difficulty and cost. Furthermore, during the rotation of the cylinder, the fan assembly can periodically block the air intake, generating intermittent vortices that effectively enhance the smog entrainment effect, further improving the range hood's extraction efficiency.

[0010] For example, the blades include first blades and second blades of different sizes, which are spaced apart on opposite sides of the cylinder. Thus, first blades and second blades of different sizes can be combined to form air intakes with different cross-sectional areas, thereby increasing the diversity of the formed air intakes. Furthermore, the first blades and second blades can be spaced apart on opposite sides of the cylinder to avoid the inability to accurately control the cross-sectional area of ​​the air intake and the first ventilation opening of the air handling unit when the cylinder rotates, which would otherwise prevent precise control of the airflow volume, velocity, or direction of the airflow through the air intake regulating component. This effectively improves the accuracy of the air intake regulating component's control.

[0011] For example, the cross-sectional area of ​​the first blade is smaller than that of the second blade, and the cylinder is rotatably configured to connect at least a portion of the first blade and / or at least a portion of the second blade to the first vent. In this way, the cylinder can rotatably connect at least a portion of the first blade and / or at least a portion of the second blade to the first vent of the air handling unit assembly, allowing for flexible adjustment of the air intake cross-sectional area according to different usage scenarios and needs, effectively improving the practicality and flexibility of the range hood.

[0012] For example, there are multiple first blades arranged in rows and columns on the cylinder; and / or, there are multiple second blades arranged in rows and columns on the cylinder. In this way, multiple first blades and / or multiple second blades can be arranged in rows and columns on the cylinder, thereby realizing the multi-directional and multi-angle suction and exhaust of oil fumes by the range hood, effectively ensuring the range and efficiency of the range hood in suction and exhausting oil fumes.

[0013] For example, the cylinder is fixedly installed at the first ventilation opening, and the blades are rotatably installed on the cylinder. When the blades rotate, they adjust the ventilation area of ​​the air intake and the direction of the airflow through the air intake. In this way, by controlling the opening and closing angle of the blades, the ventilation area of ​​the air intake and the direction of the airflow through the air intake can be adjusted, effectively reducing the structure of the air intake adjustment component and further reducing the manufacturing difficulty and cost of the air intake adjustment component.

[0014] For example, the blades include multiple fan-shaped sections movably mounted on the cylindrical body, with air intakes formed between adjacent fan-shaped sections. The fan-shaped sections rotatably adjust the ventilation area of ​​the air intakes and the direction of airflow through them. In this way, multiple fan-shaped sections can be movably mounted on the cylindrical body, and air intakes for the flow of cooking fumes can be formed between adjacent fan-shaped sections. By adjusting the opening and closing of the fan-shaped sections or the opening and closing angle between adjacent fan-shaped sections, the cross-sectional area of ​​the air intakes can be adjusted, thus adapting the range hood to different usage scenarios and needs, effectively improving the flexibility, practicality, and applicability of the range hood.

[0015] For example, the range hood also includes a sensing element and a control element. The sensing element is used to sense the concentration of cooking fumes outside the fan housing assembly. The sensing element and the drive element are electrically connected to the control element. The control element acquires the cooking fume concentration information sensed by the sensing element and sends control commands to the drive element to adjust the ventilation area of ​​the air intake and the direction of airflow through the air intake. In this way, the control element enables linkage control between the sensing element and the range hood, thereby adjusting the cross-sectional area of ​​the air intake and the airflow direction in real time according to the dynamic changes of cooking fumes. This not only achieves real-time and flexible adjustment of the air intake but also ensures a balance between the energy efficiency and exhaust efficiency of the range hood. Furthermore, through automated control of the range hood, the steps of manually adjusting the air intake can be reduced, effectively improving the automation level of the range hood.

[0016] For example, the fan unit is constructed in an inverted L-shape. A first vent is located at the top of the inverted L-shaped fan unit, near the front, while a second vent is located at the bottom. This design prevents cooking fumes from easily escaping and spreading to the user's face due to airflow diffusion or external environmental interference (such as human activity or cross-ventilation in the kitchen). The first vent, located near the front, effectively absorbs and exhausts these escaped fumes, preventing further spillage and improving the user experience. Furthermore, the first and second vents can be positioned at different heights, achieving stratified fume capture and extraction, further enhancing the range hood's extraction effect and efficiency.

[0017] For example, the range hood also includes a driver and a flap baffle. The driver is connected to the flap baffle, which is positioned at the second vent. The driver drives the flap baffle to rotate relative to the second vent, adjusting the ventilation area of ​​the second vent and the direction of airflow through it. Thus, the flap baffle can rotate relative to the second vent, allowing for flexible adjustment of the cross-sectional area of ​​the second vent and the direction of airflow, making the range hood suitable for different usage scenarios and needs. Furthermore, the driver can open or close the flap baffle, simplifying the structure, reducing manufacturing costs, and enabling automated adjustment, thus saving manpower.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0019] The above and other objects, features, and advantages of this utility model will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this utility model and form part of the specification. They are used together with the embodiments of this utility model to explain the utility model and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0020] Figure 1 A cross-sectional view of a range hood according to an exemplary embodiment of the present invention is shown;

[0021] Figure 2 A bottom view of a range hood according to an exemplary embodiment of the present invention is shown;

[0022] Figure 3A front view of an air vent regulating assembly according to an exemplary embodiment of the present invention is shown;

[0023] Figure 4 A perspective view of an air vent adjustment assembly according to an exemplary embodiment of the present invention is shown;

[0024] Figure 5 A cross-sectional view of an air vent regulating assembly according to an exemplary embodiment of the present invention is shown;

[0025] Figure 6 It shows Figure 1 Local magnification corresponding to point I in the middle Figure 1 (The range hood is in low mode);

[0026] Figure 7 It shows Figure 1 Local magnification corresponding to point I in the middle Figure 2 (The range hood is set to medium speed).

[0027] Figure 8 It shows Figure 1 Local magnification corresponding to point I in the middle Figure 3 (The range hood is in high-speed mode);

[0028] Figure 9 A cross-sectional view of a range hood according to another exemplary embodiment of the present invention is shown;

[0029] Figure 10 A perspective view of an air vent adjustment assembly according to another exemplary embodiment of the present invention is shown;

[0030] Figure 11 A front view of an air vent regulating assembly according to another exemplary embodiment of the present invention is shown;

[0031] Figure 12 A cross-sectional view of an air vent regulating assembly according to another exemplary embodiment of the present invention is shown;

[0032] Figure 13 It shows Figure 9 Local magnification corresponding to point II in the middle Figure 1 (The range hood is in low mode);

[0033] Figure 14 It shows Figure 9 Local magnification corresponding to point II in the middle Figure 2 (The range hood is set to medium speed).

[0034] Figure 15 It shows Figure 9 Local magnification corresponding to point II in the middle Figure 3(The range hood is in high-speed mode);

[0035] Figure 16 It shows Figure 1 Local magnification corresponding to point III Figure 1 ;

[0036] Figure 17 It shows Figure 1 Local magnification corresponding to point III Figure 2 .

[0037] The components indicated by the reference numerals in the figures are as follows:

[0038] 1. Air handling unit assembly; 11. First ventilation opening; 12. Second ventilation opening; 13. Exhaust outlet; 14. Fan; 2. Air outlet adjustment assembly; 21. Cylinder body; 211. Arc-shaped section; 212. Open side; 22. Blade; 221. First blade; 222. Second blade; 223. Fan body; 2231. First fan body; 2232. Second fan body; 2233. Third fan body; 23. Air intake; 24. Drive unit; 3. Sensor; 4. Driver; 5. Flip baffle. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model more apparent, exemplary embodiments according to this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments of this utility model. It should be understood that this utility model is not limited to the exemplary embodiments described herein. Based on the embodiments of this utility model described herein, all other embodiments obtained by those skilled in the art without inventive effort should fall within the protection scope of this utility model.

[0040] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0041] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0042] One embodiment of this utility model provides a range hood that can adjust the airflow volume, speed, and direction of the fumes entering the air handling unit 1, thus making the range hood suitable for different usage scenarios. The following will provide a detailed description of an embodiment of this utility model of a range hood with reference to the accompanying drawings.

[0043] like Figure 1 , Figure 2 and Figure 9 As shown, the range hood includes a blower assembly 1 and an air vent adjustment assembly 2. A first ventilation opening 11 is provided at the upper part of the blower assembly 1. The air vent adjustment assembly 2 includes a cylindrical body 21 and blades 22. The cylindrical body 21 is positioned along its length at the first ventilation opening 11, and the blades 22 are disposed on the cylindrical body 21 to form an air intake 23. The cylindrical body 21 and / or the blades 22 are rotatably configured to adjust the ventilation area of ​​the air intake 23 and the direction of the airflow passing through it.

[0044] A fan 14 can be installed inside the air handling unit 1 of the range hood. When the fan 14 rotates, it can create negative pressure inside the air handling unit 1. Under the action of negative pressure, the oil fumes from the external environment can flow into the air handling unit 1 through the air outlet regulating component 2 installed at the first ventilation port 11 of the air handling unit 1, and then be discharged through the exhaust port 13 of the air handling unit 1.

[0045] The blades 22 can be elongated, and can be positioned along the length of the cylinder 21. When the cylinder 21 is positioned at the first vent 11, the suction port 23 and the first vent 11 of the air handling unit 1 can be correspondingly positioned to form a flow channel for the fumes. The fumes can flow into the air handling unit 1 sequentially through the first vent 11 and the suction port 23. An open side 212 can be formed on the side of the cylinder 21 away from the blades 22. After the fumes flow into the suction port 23 through the first vent 11, they can flow into the air handling unit 1 through the open side 212 of the cylinder 21. The cylinder 21 and / or the blades 22 can rotate flexibly, allowing the suction port 23 and the first vent 11 to be staggered. This allows adjustment of the ventilation area and airflow direction of the flow channel formed between the suction port 23 and the first vent 11, thereby adjusting the volume, velocity, and direction of the fumes flowing into the air handling unit 1.

[0046] By adjusting the cross-sectional area of ​​the air intake 23, the range hood can be adapted to different usage scenarios or needs. For example, when the concentration of cooking fumes is high, the cross-sectional area of ​​the air intake 23 can be increased to provide a larger exhaust airflow and ensure effective fume extraction. When the concentration of cooking fumes is low, the cross-sectional area of ​​the air intake 23 can be decreased to provide a larger exhaust velocity to extract lighter amounts of fumes. Furthermore, a larger exhaust velocity can create a negative pressure barrier in localized areas of the range hood to prevent the fumes from spreading outwards.

[0047] In this utility model of a range hood, the blades 22 in the vent adjustment assembly 2 can be mounted on the cylinder 21, thereby forming an air intake 23 on the cylinder 21. When the cylinder 21 is positioned at the first ventilation opening 11, the air intake 23 and the first ventilation opening 11 can be correspondingly arranged to form a flow channel for cooking fumes. The cylinder 21 and / or the blades 22 can rotate flexibly, allowing the air intake 23 and the first ventilation opening 11 to be staggered. This allows adjustment of the ventilation area and airflow direction of the flow channel formed between the air intake 23 and the first ventilation opening 11, thereby adjusting the airflow volume, speed, and direction of the cooking fumes flowing into the range hood. The range hood is suitable for different usage scenarios. When the concentration of cooking fumes is low, the cross-sectional area of ​​the air intake 23 can be reduced, thereby increasing the air velocity of the fumes flowing through the air intake 23 and allowing the air intake 23 to be oriented towards the area away from the range hood, thus capturing the overflowing fumes and effectively avoiding redundant waste of the range hood's suction power. When the concentration of cooking fumes is high, the cross-sectional area of ​​the air intake 23 can be increased, thereby increasing the air volume of the fumes flowing through the air intake 23 and allowing the air intake 23 to be oriented towards the fumes, thus quickly sucking and exhausting the fumes, effectively ensuring the range hood's suction and exhaust performance, and thus improving the range hood's flexibility, practicality, and applicability.

[0048] In some embodiments, such as Figure 2 As shown, the air outlet adjustment assembly 2 also includes a drive component 24, the output end of which is connected to the cylinder 21, and the drive component 24 drives the cylinder 21 to rotate; and / or, the output end of the drive component 24 is connected to the blade 22, and the drive component 24 drives the blade 22 to rotate.

[0049] The drive component 24 can be located beside and connected to the cylinder 21, or it can be located beside and connected to the blade 22. The drive component 24 can drive the cylinder 21 and / or the blade 22 to rotate, thereby flexibly adjusting the cross-sectional area of ​​the suction port 23, and thus adjusting the airflow volume or velocity entering the air handling unit 1. It can also flexibly adjust the airflow direction through the suction port 23 to extract and exhaust fumes from different directions. It is understood that the smaller the cross-sectional area of ​​the suction port 23, the smaller the airflow volume and the greater the airflow velocity. Conversely, the larger the cross-sectional area of ​​the suction port 23, the greater the airflow volume and the lower the airflow velocity.

[0050] In embodiments not shown, the cylinder 21 and / or blades 22 can also be rotated manually to reduce the manufacturing cost of the range hood.

[0051] In the above embodiments, the driving component 24 can drive the cylinder 21 and / or the blades 22 to rotate, so as to adjust the cross-sectional area of ​​the air intake 23 connected to the first ventilation port 11 of the air handling unit 1, as well as the airflow direction through the air intake 23. In this way, while ensuring that the air intake 23 can be flexibly adjusted, the automation level of the range hood is effectively improved, and the user experience and convenience are enhanced.

[0052] In some embodiments, such as Figures 3 to 5 As shown, the cylinder 21 has an arc-shaped portion 211 exposed to the air handling unit 1 and facing downwards, and at least some blades 22 are disposed on the arc-shaped portion 211.

[0053] In the above embodiment, the cylinder 21 may have an arc-shaped portion 211 exposed to the air handling unit 1 and facing downwards, and at least a portion of the blades 22 may be disposed on the arc-shaped portion 211, so that the formed air intake 23 can face the stove below the range hood, so that when cooking food with the stove, the generated fumes can flow into the air handling unit 1 through the air intake 23 through the shortest path, effectively ensuring the suction and exhaust effect of the range hood.

[0054] In some embodiments, such as Figures 3 to 5 As shown, the cylinder 21 is rotatably mounted at the first ventilation port 11, and the blades 22 are fixedly mounted on the cylinder 21. The blades 22 adjust the ventilation area of ​​the air intake 23 and the direction of the airflow through the air intake 23 under the drive of the cylinder 21.

[0055] The driving component 24 can drive the cylinder 21 to rotate clockwise or counterclockwise, thereby causing the blades 22 on the cylinder 21 to rotate accordingly. It can be understood that the blades 22 can specifically be through holes formed on the cylinder 21. During the rotation of the cylinder 21, some or all of the blades 22 can be connected to the first ventilation port 11 of the air handling unit 1, thereby flexibly adjusting the ventilation area of ​​the air intake 23 and the airflow direction through the air intake 23.

[0056] In the above embodiment, the cylinder 21 can drive the blades 22 to rotate synchronously, thereby ensuring flexible adjustment of the air intake 23 while simplifying the structure of the air intake adjustment component 2 and reducing its manufacturing difficulty and cost. Furthermore, during the rotation of the cylinder 21, the air handling unit 1 can periodically block the air intake 23, generating intermittent vortices that effectively enhance the smog entrainment effect and further improve the range hood's extraction efficiency.

[0057] In some embodiments, such as Figures 3 to 5 As shown, the blade 22 includes a first blade 221 and a second blade 222 of different sizes, and the first blade 221 and the second blade 222 are arranged at intervals on opposite sides of the cylinder 21.

[0058] The first blade 221 and the second blade 222 can be elongated, and the elongated first blade 221 and the second blade 222 can be arranged at intervals on opposite sides of the arc-shaped portion 211.

[0059] The first blade 221 and the second blade 222 can have different ventilation areas (i.e., cross-sectional areas). The drive unit 24 can drive the cylinder 21 to rotate so that the first blade 221 or the second blade 222, or both the first blade 221 and the second blade 222, are connected to the first ventilation port 11 of the air handling unit 1, so that the air intake port 23 can have different cross-sectional areas.

[0060] In the above embodiments, first blades 221 and second blades 222 of different sizes can be combined to form air inlets 23 with different cross-sectional areas, thereby increasing the diversity of the formed air inlets 23. Furthermore, the first blades 221 and second blades 222 can be spaced apart on opposite sides of the cylinder 21 to avoid the inability to accurately control the cross-sectional area of ​​the air inlet 23 and the first ventilation opening 11 of the air handling unit 1 due to the close distance between the first blades 221 and second blades 222 when the cylinder 21 rotates. This would prevent the precise control of the airflow volume, speed, or direction of the airflow through the air outlet regulating component 2, effectively improving the accuracy of the air outlet regulating component 2.

[0061] In some embodiments, such as Figures 3 to 5As shown, the cross-sectional area of ​​the first blade 221 is smaller than that of the second blade 222, and the cylinder 21 is used to rotatably connect at least a portion of the first blade 221 and / or at least a portion of the second blade 222 to the first vent 11.

[0062] For example, a range hood may have a low-speed mode, a medium-speed mode, and a high-speed mode. Figure 6 As shown, in low-speed mode, the first blade 221 of the range hood can be connected to the first vent 11 of the air handling unit 1, allowing fumes to flow into the cylinder 21 via the first blade 221, and then into the air handling unit 1 through the open side 212 of the cylinder 21. Figure 7 As shown, in the medium-speed mode of the range hood, the first blade 221 and part of the second blade 222 can be connected to the first vent 11 of the air handling unit 1. Oil fumes can flow into the cylinder 21 through the first blade 221 and part of the second blade 222, and then into the air handling unit 1 through the open side 212 of the cylinder 21. Figure 8 As shown, in high-end mode, the first blade 221 and all the second blades 222 of the range hood can be connected to the first vent 11 of the air handling unit 1. Cooking fumes can flow into the cylinder 21 via the first blade 221 and the second blades 222, and then into the air handling unit 1 through the open side 212 of the cylinder 21. It can be understood that the direction of the arrows in the diagram specifically represents the flow path of the cooking fumes.

[0063] In the above embodiment, the cylinder 21 can be rotatably connected to at least part of the first blade 221 and / or at least part of the second blade 222 with the first vent 11 of the air handling unit 1. This allows the cross-sectional area of ​​the air intake 23 to be flexibly adjusted according to different usage scenarios and needs, effectively improving the practicality and flexibility of the range hood.

[0064] In some embodiments, such as Figure 3 and Figure 4 As shown, there are multiple first blades 221, which are arranged in rows and columns on the cylinder 21; and / or, there are multiple second blades 222, which are arranged in rows and columns on the cylinder 21.

[0065] The aforementioned plurality of first blades 221 and / or plurality of second blades 222 can have different orientations. For example, the orientation of the plurality of first blades 221 and / or plurality of second blades 222 can be perpendicular to the rotation axis of the cylinder 21, or it can be inclined at 45 degrees to the rotation axis. In this way, it can adapt to the direction of oil fume injection in different cooking scenarios (such as stir-frying, steaming, etc.) and achieve all-round oil fume extraction.

[0066] In the above embodiments, multiple first blades 221 and / or multiple second blades 222 can be arranged in rows and columns on the cylinder 21, thereby realizing the range hood's multi-directional and multi-angle suction and exhaust of oil fumes, effectively ensuring the range and efficiency of the range hood's suction and exhaust of oil fumes.

[0067] In some embodiments, such as Figures 9 to 15 As shown, the cylinder 21 is fixedly installed at the first ventilation port 11, and the blades 22 are rotatably installed on the cylinder 21. When the blades 22 rotate, they adjust the ventilation area of ​​the air intake 23 and the direction of the airflow through the air intake 23.

[0068] It is understood that the blade 22 can specifically be a fan body 223 rotatably connected to the cylinder 21. The blade 22 can be elongated, and the elongated blade 22 can cooperate with the cylinder 21 to form an air intake 23.

[0069] In the above embodiments, by controlling the opening and closing angle of the blades 22, the ventilation area of ​​the air inlet 23 and the airflow direction through the air inlet 23 can be adjusted, effectively reducing the structure of the air outlet adjustment component 2 and further reducing the manufacturing difficulty and cost of the air outlet adjustment component 2.

[0070] In some embodiments, such as Figures 10 to 15 As shown, the blade 22 includes multiple fan bodies 223 movably disposed on the cylinder 21. An air intake 23 is formed between adjacent fan bodies 223. The fan bodies 223 rotatably adjust the ventilation area of ​​the air intake 23 and the airflow direction through the air intake 23.

[0071] Multiple fan bodies 223 can be movably mounted on the cylinder 21 and driven to rotate independently by a drive member 24. There can be one drive member 24, which can drive multiple fan bodies 223 to rotate through a transmission structure. This transmission structure can be one or a combination of the following: gear transmission structure, belt transmission structure. Of course, there can also be multiple drive members 24, each corresponding to one fan body 223. This application does not specifically limit the number of drive members 24.

[0072] The aforementioned multiple fan bodies 223 may include at least a first fan body 2231, a second fan body 2232, and a third fan body 2233, with one end of each of the three fan bodies 2231, 2232, and 2233 connected to the drive unit 24 along their length. The range hood may have low, medium, and high speed modes. For example... Figure 10As shown, in low-speed mode, the second fan 2232 can be in the open state, while the first fan 2231 and the third fan 2233 can be in the closed state. The fumes can flow into the cylinder 21 through both sides of the first fan 2231, and then into the air handling unit 1 through the open side 212 of the cylinder 21. Figure 11 As shown, in the medium-speed mode of the range hood, the second fan body 2232 and the third fan body 2233 can be in the open state, while the first fan body 2231 can be in the closed state. The fumes can flow into the cylinder 21 through both sides of the second fan body 2232 and the third fan body 2233, and then into the air handling unit 1 through the open side 212 of the cylinder 21. Figure 12 As shown, in high-end mode, the first fan body 2231, the second fan body 2232, and the third fan body 2233 can all be open. Cooking fumes can flow into the cylinder 21 through both sides of the first fan body 2231, the second fan body 2232, and the third fan body 2233, and then into the air handling unit 1 through the open side 212 of the cylinder 21. It can be understood that the direction of the arrows in the diagram specifically represents the flow path of the cooking fumes. By controlling the opening and closing of the first fan body 2231, the second fan body 2232, and the third fan body 2233, or the opening angle between adjacent fan bodies 223, the cross-sectional area of ​​the air intake vent 23 can be flexibly adjusted, making the range hood suitable for different usage scenarios and needs, effectively improving the practicality and flexibility of the range hood.

[0073] In the above embodiment, multiple fan bodies 223 can be movably disposed on the cylinder 21, and air inlets 23 for allowing oil fumes to flow can be formed between adjacent fan bodies 223. By adjusting the opening and closing of the fan bodies 223 or the opening and closing angle between adjacent fan bodies 223, the cross-sectional area of ​​the air inlets 23 can be adjusted, so that the range hood can be adapted to different usage scenarios and needs, effectively improving the flexibility, practicality and applicability of the range hood.

[0074] In some embodiments, such as Figure 1 , Figures 6 to 12 As shown, the range hood also includes a sensing element 3 and a control element. The sensing element 3 is used to sense the oil fume concentration information outside the air handling unit 1. The sensing element 3 and the drive element 24 are electrically connected to the control element. The control element obtains the oil fume concentration information sensed by the sensing element 3 and sends control commands to the drive element 24 to adjust the ventilation area of ​​the air intake 23 and the airflow direction through the air intake 23.

[0075] The above-mentioned sensing element 3 can be located on the outer side wall of the air cabinet assembly 1 and arranged close to the first ventilation opening 11. The sensing element 3 can monitor the oil fume concentration in the environment where the range hood is located in real time and generate oil fume concentration information, the control element can acquire the oil fume concentration information and control the driving element 24 to operate according to the oil fume concentration information, so that the driving element 24 can drive the cylinder 21 and / or the vane 22 to rotate, thereby adjusting the cross-sectional area and the airflow direction of the suction opening 23. Specifically, the range hood can have corresponding oil fume concentration intervals respectively in low-grade mode, medium-grade mode and high-grade mode, and the control element can judge the oil fume concentration interval where the acquired oil fume concentration information falls into and the air volume mode of the range hood according to the acquired oil fume concentration information, and then control the driving element 24 to drive the cylinder 21 and / or the vane 22 to rotate to corresponding angles, thereby realizing the adjustment of the suction opening 23.

[0076] The above-mentioned sensing element 3 can specifically be a PM2.5 sensor or an organic matter concentration sensor, which is not specifically limited in the present application.

[0077] It should be noted that the control element can be constructed by electronic components such as timers, comparators, registers and digital logic circuits, or implemented by processor chips such as single-chip microcomputers, microprocessors, programmable logic controllers (PLC), digital signal processors (DSP), field programmable gate arrays (FPGA), programmable logic arrays (PLA), application specific integrated circuits (ASIC) and their peripheral circuits.

[0078] In the above embodiment, the linkage control between the sensing element 3 and the range hood can be realized through the control element, so that the cross-sectional area and the airflow direction of the suction opening 23 can be adjusted in real time according to the dynamic change of oil fume, which not only realizes real-time and flexible adjustment of the suction opening 23, but also ensures the balance between the energy efficiency and the suction and discharge efficiency of the range hood. Moreover, through automatic control of the range hood, the steps of manually adjusting the suction opening 23 can be reduced, and the automation level of the range hood is effectively improved.

[0079] In some embodiments, as Figure 1 , Figure 2 and Figure 9 shown, the air cabinet assembly 1 is configured in an inverted L shape, the first ventilation opening 11 is arranged at the upper part of the inverted L-shaped air cabinet assembly 1 and close to the front side, and a second ventilation opening 12 is further arranged at the lower part of the inverted L-shaped air cabinet assembly 1.

[0080] The first ventilation opening 11 can be specifically arranged on the horizontal part of the inverted L-shaped air cabinet assembly 1 and close to the front side, and the above-mentioned close to the front side can be specifically understood as the side of the horizontal part close to a user. The second ventilation opening 12 can be specifically arranged on the vertical part of the inverted L-shaped air cabinet assembly 1.

[0081] When the fan 14 inside the air handling unit 1 is operating, the cooking fumes from the surrounding environment can flow into the air handling unit 1 through the first vent 11 and the second vent 12, and then be discharged through the exhaust vent 13 of the air handling unit 1. The height of the first vent 11 can be higher than the height of the second vent 12. Specifically, the height of the first vent 11 can be above the cookware to absorb and exhaust the outward-spreading cooking fumes. The height of the second vent 12 can correspond to the height of the cookware to absorb and exhaust the cooking fumes generated during cooking.

[0082] In the above embodiments, during the rising process, cooking fumes can easily escape and spread to the user's facial area due to airflow diffusion or interference from the external environment (such as human activity, cross airflow in the kitchen, etc.). Therefore, the first vent located near the front can absorb and exhaust the cooking fumes that have escaped and spread to the user's facial area, not only preventing further overflow of cooking fumes but also effectively improving the user experience. Furthermore, the first vent 11 and the second vent 12 can be set at different heights, thereby achieving layered capture and extraction of cooking fumes, further improving the range hood's extraction effect and efficiency.

[0083] In some embodiments, such as Figure 16 and Figure 17 As shown, the range hood also includes a driver 4 and a flap baffle 5. The driver 4 is connected to the flap baffle 5. The flap baffle 5 is located at the second vent 12. The driver 4 drives the flap baffle 5 to rotate relative to the second vent 12 to adjust the ventilation area of ​​the second vent 12 and the direction of the airflow through the second vent 12.

[0084] Specifically, the actuator 4 can be connected to the flap baffle 5 via at least two connected rods. The actuator 4 can be a motor, etc. When there are two rods, one rod can be connected to the actuator 4 and the other rod can be connected to the flap baffle 5. The actuator 4 can be installed on the back plate of the air handling unit 1, and the rods can be connected to the middle of the flap baffle 5 to ensure the stability of the rotation of the entire flap baffle 5. The actuator 4 can drive the two rods to pull the flap baffle 5 to rotate inward toward the air handling unit 1 to open the second vent 12, and the actuator 4 can also drive the two rods to push the flap baffle 5 to rotate outward to close the second vent 12.

[0085] Of course, in embodiments not shown, the actuator 4 can also be located outside the air handling unit assembly 1. The actuator 4 can drive two connecting rods to pull the flap baffle 5 to rotate outward to open the second vent 12. The actuator 4 can also drive two connecting rods to push the flap baffle 5 to rotate inward to close the second vent 12, so as to be suitable for different usage scenarios.

[0086] In the above embodiment, the flap baffle 5 can rotate relative to the second vent 12, thereby flexibly adjusting the cross-sectional area of ​​the second vent 12 and the direction of airflow through the second vent 12, so that the range hood can be adapted to different usage scenarios and needs. Furthermore, the actuator 4 can drive the flap baffle 5 to open or close, which not only simplifies the structure and reduces manufacturing costs, but also achieves automated adjustment, saving manpower.

[0087] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above exemplary embodiments are merely illustrative and are not intended to limit the scope of the invention. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as claimed in the appended claims.

[0088] For ease of description, the term "connection" may be used herein to describe the relationship between one or more elements or features shown in the figure and other elements or features. It should be understood that "connection" may include direct connections or indirect connections via other elements or features, and this document is intended to encompass all such cases.

[0089] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0090] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0091] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A range hood, characterized in that, include: A blower assembly, wherein a first ventilation opening is provided on the upper part of the blower assembly; as well as An air vent adjustment assembly includes a cylinder and blades. The cylinder is disposed at the first ventilation opening along its length, and the blades are disposed on the cylinder to form an air intake on the cylinder. The cylinder and / or the blades are rotatably configured to adjust the ventilation area of ​​the air intake and the direction of the airflow through the air intake.

2. The range hood according to claim 1, characterized in that, The air outlet adjustment assembly further includes a drive component, the output end of which is connected to the cylinder body, and the drive component drives the cylinder body to rotate; and / or, the output end of the drive component is connected to the blades, and the drive component drives the blades to rotate.

3. The range hood according to claim 1, characterized in that, The cylinder has an arc-shaped portion exposed to the air handling unit and facing downwards, and at least a portion of the blades are disposed on the arc-shaped portion.

4. The range hood according to claim 1, characterized in that, The cylinder is rotatably mounted at the first ventilation opening, and the blades are fixedly mounted on the cylinder. The blades adjust the ventilation area of ​​the air intake and the direction of the airflow through the air intake under the action of the cylinder.

5. The range hood according to claim 4, characterized in that, The blades include a first blade and a second blade of different sizes, and the first blade and the second blade are spaced apart on opposite sides of the cylinder.

6. The range hood according to claim 5, characterized in that, The cross-sectional area of ​​the first blade is smaller than that of the second blade, and the cylinder is used to rotatably connect at least a portion of the first blade and / or at least a portion of the second blade to the first vent.

7. The range hood according to claim 6, characterized in that, The first blade is a plurality of blades, which are arranged in rows and columns on the cylinder; and / or, the second blade is a plurality of blades, which are arranged in rows and columns on the cylinder.

8. The range hood according to claim 1, characterized in that, The cylinder is fixedly installed at the first ventilation opening, and the blades are rotatably installed on the cylinder. When the blades rotate, they adjust the ventilation area of ​​the air intake and the direction of the airflow through the air intake.

9. The range hood according to claim 8, characterized in that, The blades include multiple fan bodies movably disposed on the cylinder body, and the air intake is formed between adjacent fan bodies. The fan bodies rotatably adjust the ventilation area of ​​the air intake and the direction of the airflow through the air intake.

10. The range hood according to claim 2, characterized in that, The range hood also includes a sensing element and a control element. The sensing element is used to sense the concentration of oil fumes outside the fan housing assembly. The sensing element and the drive element are electrically connected to the control element. The control element acquires the oil fume concentration information sensed by the sensing element and sends control commands to the drive element to adjust the ventilation area of ​​the air intake and the direction of the airflow through the air intake.

11. The range hood according to claim 1, characterized in that, The air handling unit is constructed in an inverted L-shape. The first ventilation opening is located on the upper part of the inverted L-shaped air handling unit and is close to the front side. A second ventilation opening is also provided on the lower part of the inverted L-shaped air handling unit.

12. The range hood according to claim 11, characterized in that, The range hood also includes a driver and a flap baffle. The driver is connected to the flap baffle, which is located at the second vent. The driver drives the flap baffle to rotate relative to the second vent to adjust the ventilation area of ​​the second vent and the direction of the airflow through the second vent.

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