Range hood and control method thereof

Abstract

The application relates to an oil fume extractor and a control method thereof. The oil fume extractor comprises an extractor body, a control module, an inlet fume state detection module and an inlet fume module arranged on the extractor body. The inlet fume state detection module and the inlet fume module are connected to the control module. The inlet fume state detection module is used for detecting the inlet fume state of a target area, generating an inlet fume state detection result and sending the inlet fume state detection result to the control module. The control module is used for controlling the inlet fume module to be in a first working mode or a second working mode according to the inlet fume state detection result. The number of inlet fume inlets of the inlet fume module in the first working mode is less than that in the second working mode. The oil fume extractor can automatically adjust the oil fume suction intensity according to the oil fume state, adaptively absorb the oil fume, enrich the application scene, improve the oil fume absorption efficiency and the oil fume absorption effect, and improve the working reliability of the oil fume extractor.

Description

Technical Field

[0001] This application relates to the field of range hood technology, and in particular to a range hood and its control method. Background Technology

[0002] As people's living standards continue to improve, range hoods have gradually become an indispensable household appliance in the kitchen. Range hoods can remove cooking fumes from the kitchen, which not only purifies the kitchen environment but also benefits human health, and has been widely used.

[0003] Traditional range hoods are typically installed above cooking appliances. When cooking produces fumes, the range hood is turned on, and it uses suction to draw in the fumes. However, cooking conditions vary greatly, and traditional range hoods, with their single operating mode, are prone to issues such as insufficient suction power leading to weak fume extraction, or excessive suction power resulting in wasted resources. They also lack the ability to adapt to different fumes, resulting in low flexibility and unreliable operation. Summary of the Invention

[0004] Therefore, it is necessary to address the issue of low reliability in traditional range hoods by providing a range hood and its control method that can improve operational reliability.

[0005] A range hood includes a range hood body, a control module, and a smoke intake status detection module and a smoke intake module disposed on the range hood body, wherein the smoke intake status detection module and the smoke intake module are both connected to the control module;

[0006] The smoke inlet status detection module is used to detect the smoke inlet status of the target area, generate a smoke inlet status detection result and send it to the control module. The control module is used to control the smoke inlet module to be in a first working mode or a second working mode according to the smoke inlet status detection result. The number of smoke inlets in the first working mode is less than the number of smoke inlets in the second working mode.

[0007] In one embodiment, the smoke inlet module includes a first smoke inlet component and a second smoke inlet component, the first smoke inlet component and the second smoke inlet component having different smoke inlets.

[0008] In one embodiment, the smoke inlet module further includes a first flipping component connected to the control module. Both the first smoke inlet component and the second smoke inlet component are disposed on the first flipping component and rotate based on the first flipping component.

[0009] In one embodiment, the first smoke inlet assembly and the second smoke inlet assembly are foldable.

[0010] In one embodiment, when the smoke inlet module is in the second operating mode, the ideal smoke inlet direction of the first smoke inlet component is perpendicular to the ideal smoke inlet direction of the second smoke inlet component.

[0011] In one embodiment, the second smoke inlet assembly includes a smoke guide assembly, and a first smoke inlet wall and a second smoke inlet wall disposed opposite to each other. The first smoke inlet wall has an opening, and the smoke guide assembly is disposed on the second smoke inlet wall at a position corresponding to the opening of the first smoke inlet wall.

[0012] In the first operating mode, the first smoke inlet wall is located on the side away from the smoke inlet, the second smoke inlet wall is located on the side closer to the smoke inlet, and the smoke guiding component is open; in the second operating mode, the first smoke inlet wall is located on the side closer to the smoke inlet, the second smoke inlet wall is located on the side away from the smoke inlet, and the smoke guiding component is closed.

[0013] In one embodiment, the smoke guiding assembly includes a first smoke guiding plate, a second smoke guiding plate, a second flipping assembly, and a third flipping assembly. The first smoke guiding plate is disposed on the second flipping assembly and rotates based on the second flipping assembly. The second smoke guiding plate is disposed on the third flipping assembly and rotates based on the third flipping assembly. When the first smoke guiding plate and the second smoke guiding plate are parallel, the smoke guiding assembly is in a closed state.

[0014] In one embodiment, the smoke inlet status detection module includes an infrared detection device, and the smoke inlet status detection result includes the height of the cooking appliance;

[0015] The infrared detection device is used to detect the height of the cooking appliance and send the data to the control module. When the height of the cooking appliance is greater than a preset height threshold, the control module controls the smoke inlet module to be in a first working mode.

[0016] In one embodiment, the smoke inlet status detection module includes an oil fume concentration detection device, and the smoke inlet status detection result includes the oil fume concentration;

[0017] The oil fume concentration detection device is used to detect the oil fume concentration and send it to the control module. When the oil fume concentration is greater than a preset concentration threshold, the control module controls the smoke inlet module to enter a second working mode.

[0018] In one embodiment, the smoke inlet status detection module includes an infrared detection device and an oil fume concentration detection device, and the smoke inlet status detection result includes the height of the cooking appliance and the oil fume concentration;

[0019] The infrared detection device is used to detect the height of the cooking appliance and send the data to the control module. The oil fume concentration detection device is used to detect the oil fume concentration and send the data to the control module. The control module is used to control the smoke intake module to be in a first working mode when the height of the cooking appliance is less than or equal to a preset height threshold and the oil fume concentration is less than or equal to a preset concentration threshold. The control module is also used to control the smoke intake module to be in a second working mode when the height of the cooking appliance is less than or equal to the preset height threshold and the oil fume concentration is greater than the preset concentration threshold.

[0020] A method for controlling a range hood includes:

[0021] Obtain the smoke inlet status detection result; the smoke inlet status detection result is obtained by the smoke inlet status detection module after detecting the smoke inlet status of the target area;

[0022] The smoke inlet module is controlled to be in either a first working mode or a second working mode based on the smoke inlet status detection result; wherein, the number of smoke inlets in the smoke inlet module in the first working mode is less than the number of smoke inlets in the smoke inlet module in the second working mode.

[0023] In one embodiment, the smoke intake status detection result includes the height of the cooking appliance, and controlling the smoke intake module to be in a first working mode or a second working mode based on the smoke intake status detection result includes:

[0024] When the height of the cooking appliance is greater than a preset height threshold, the smoke intake module is controlled to be in the first working mode.

[0025] In one embodiment, the smoke intake status detection result includes the oil fume concentration, and controlling the smoke intake module to be in a first working mode or a second working mode based on the smoke intake status detection result includes:

[0026] When the oil fume concentration is greater than a preset concentration threshold, the smoke inlet module is controlled to enter the second working mode.

[0027] In one embodiment, the smoke intake status detection result includes the height of the cooking appliance and the concentration of cooking fumes. Controlling the smoke intake module to a first working mode or a second working mode based on the smoke intake status detection result includes:

[0028] When the height of the cooking appliance is less than or equal to a preset height threshold and the smoke oil concentration is less than or equal to a preset concentration threshold, the smoke intake module is controlled to be in the first working mode.

[0029] When the height of the cooking appliance is less than or equal to a preset height threshold and the oil fume concentration is greater than a preset concentration threshold, the smoke intake module is controlled to be in the second working mode.

[0030] The aforementioned range hood and its control method include a range hood body, a control module, and a smoke intake status detection module and a smoke intake module installed on the range hood body. Both the smoke intake status detection module and the smoke intake module are connected to the control module. The smoke intake status detection module detects the smoke intake status of a target area, generates a smoke intake status detection result, and sends it to the control module. The control module controls the smoke intake module to operate in a first working mode or a second working mode based on the smoke intake status detection result. In the first working mode, the number of smoke inlets on the smoke intake module is less than the number of smoke inlets on the smoke intake module in the second working mode. The control module switches the working mode of the smoke intake module based on the smoke intake status detection result of the target area detected by the smoke intake status detection module, adjusting the number of smoke inlets on the smoke intake module, thereby adjusting the smoke intake intensity. This allows the range hood to automatically adjust its smoke absorption intensity according to the smoke status, adaptively absorbing smoke, enriching its applicable scenarios, improving smoke absorption efficiency and effect, and enhancing the reliability of the range hood. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a range hood in one embodiment;

[0033] Figure 2 This is a schematic diagram of the range hood in another embodiment;

[0034] Figure 3 This is a structural schematic diagram of the range hood in yet another embodiment;

[0035] Figure 4 This is a schematic diagram of the smoke guiding component in one embodiment;

[0036] Figure 5 This is a flowchart illustrating the control method for a range hood in one embodiment;

[0037] Figure 6 This is a detailed flowchart illustrating the control method for a range hood in one embodiment. Detailed Implementation

[0038] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0040] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0041] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0042] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.

[0043] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0044] In one embodiment, a range hood is provided, such as Figure 1 As shown, the range hood includes a main body, a control module (not shown in the figure), and a smoke intake status detection module 4 and a smoke intake module 1 installed on the main body. Both the smoke intake status detection module 4 and the smoke intake module 1 are connected to the control module. The main body of the range hood is usually positioned above the cooking appliance 2. During cooking, the fumes generated by the cooking appliance 2 rise upwards and are drawn into the main body of the range hood, thus performing the function of fume extraction.

[0045] The smoke intake status detection module 4 detects the smoke intake status of the target area and generates a smoke intake status detection result, which is sent to the control module. The control module controls the smoke intake module 1 to operate in either a first or second working mode based on the smoke intake status detection result. In the first working mode, the number of smoke inlets in the smoke intake module 1 is less than the number of smoke inlets in the second working mode. The control module switches the working mode of the smoke intake module 1 based on the smoke intake status detection result of the target area detected by the smoke intake status detection module 4, adjusting the number of smoke inlets and thus the smoke intake intensity. This allows the range hood to automatically adjust its smoke absorption intensity according to the smoke status, adaptively absorbing smoke, enriching its applicable scenarios, improving smoke absorption efficiency and effect, and enhancing the reliability of the range hood.

[0046] Specifically, the range hood body serves as the supporting structure for the smoke intake status detection module 4 and the smoke intake module 1, both of which are located within the range hood body. The range hood body includes the volute assembly 3, motor, blades, and other inherent components of the range hood, enabling it to extract cooking fumes. Furthermore, the surface of the range hood body typically features switches or a display screen to facilitate user interaction with the range hood.

[0047] The smoke intake status detection module 4 is used to detect the smoke intake status of the target area, which is the detection area of ​​the smoke intake status detection module 4, typically the area between the cooking appliance 2 and the range hood body. The smoke intake status of the target area can characterize the oil fume status in the current cooking scenario and can include various types of parameters, such as oil fume concentration and oil fume range. The type of the smoke intake status detection module 4 is not unique; it only needs to be able to detect the smoke intake status of the target area. The smoke intake status detection module 4 is used to detect the smoke intake status of the target area and generate a smoke intake status detection result, which is then sent to the control module. The smoke intake status detection result, as a quantitative result of the smoke intake status, is sent to the control module and can be used by the control module as a basis for subsequent control.

[0048] As the main control device of the range hood, the control module can control the working status and mode of multiple components in the range hood. For example, the control module can control the range hood to turn on and off, and can also control the working status of the motor, thereby controlling the range hood's speed settings. In this embodiment, after receiving the smoke intake status detection result from the smoke intake status detection module 4, the control module controls the working mode of the smoke intake module 1 according to the smoke intake status detection structure.

[0049] The smoke inlet module 1 is a module used for smoke intake, typically including a smoke inlet channel. A motor inside the range hood drives the blades to rotate, generating suction that draws external fumes into the range hood through the smoke inlet module 1. The control module controls the smoke inlet module 1 to operate in either a first or second working mode based on the smoke intake status detection results. In the first working mode, the number of smoke inlets in the smoke inlet module 1 is less than the number of smoke inlets in the second working mode; that is, the number of smoke inlets actually used in the first working mode is less than the number of smoke inlets actually used in the second working mode. It can be understood that the smoke inlet module 1 has at least two smoke inlets. Furthermore, the different smoke inlets of the smoke inlet module 1 are located in different positions, allowing for the absorption of fumes at different locations.

[0050] Taking the smoke inlet module 1, which includes two smoke inlets, as an example, in the first working mode, the smoke inlet module 1 has one smoke inlet, or it can be understood that the smoke inlet module 1 has one smoke inlet in use. In the second working mode, the smoke inlet module 1 has two smoke inlets, or it can be understood that the smoke inlet module 1 has two smoke inlets in use.

[0051] When the smoke intake module 1 is in either the first or second working mode, the number of smoke inlets and the number of inlets actually in use differ, resulting in varying levels of smoke absorption intensity and even different locations for smoke absorption. The control module controls the smoke intake module 1 to operate in either the first or second working mode based on the smoke intake status detection results. It can adjust the working mode of the smoke intake module 1 according to the actual smoke conditions, thereby adjusting the smoke absorption intensity. For example, when there is less smoke, the smoke intake module 1 can be controlled to operate in the first working mode, resulting in a lower smoke absorption intensity and conserving resources. When there is more smoke, the smoke intake module 1 can be controlled to operate in the second working mode, resulting in a higher smoke absorption intensity, ensuring effective smoke absorption and reducing smoke escape.

[0052] The control module of the aforementioned range hood switches the working mode of the smoke intake module 1 based on the smoke intake status detection results of the target area detected by the smoke intake status detection module 4, and adjusts the number of smoke inlets of the smoke intake module 1 to adjust the smoke intake intensity. This allows the range hood to automatically adjust the smoke absorption intensity according to the smoke status, adaptively absorb smoke, enrich the applicable scenarios, improve the smoke absorption efficiency and effect, and improve the working reliability of the range hood.

[0053] In one embodiment, such as Figure 2 As shown, the smoke inlet module 1 includes a first smoke inlet component 14 and a second smoke inlet component 15, and the first smoke inlet component 14 and the second smoke inlet component 15 have different smoke inlets.

[0054] Specifically, the first smoke inlet assembly 14 can operate independently through its smoke inlet, and the second smoke inlet assembly 15 can also operate independently through its smoke inlet. The first smoke inlet assembly 14 can be set in different locations to absorb fumes from different locations, or it can be set in the same location to absorb fumes from the same location. Both the first smoke inlet assembly 14 and the second smoke inlet assembly 15 can be connected to a control module, which can control the operating status of both the first smoke inlet assembly 14 and the second smoke inlet assembly 15.

[0055] When the smoke inlet module 1 includes a first smoke inlet component 14 and a second smoke inlet component 15, since the first smoke inlet component 14 and the second smoke inlet component 15 have different smoke inlets, the operating mode of the smoke inlet module 1 can be controlled by controlling the operating states of the first smoke inlet component 14 and the second smoke inlet component 15. For example, the control module can operate the smoke inlet module 1 in a first operating mode by controlling the first smoke inlet component 14 to operate and the second smoke inlet component 15 to operate. Alternatively, the control module can also operate the smoke inlet module 1 in the first operating mode by controlling the second smoke inlet component 15 to operate and the first smoke inlet component 14 to operate. Furthermore, the control module can also operate the smoke inlet module 1 in a second operating mode by controlling both the first smoke inlet component 14 and the second smoke inlet component 15 to operate.

[0056] Furthermore, the control module can also control the operating mode of the smoke inlet module 1 by controlling the positions of the first smoke inlet assembly 14 and the second smoke inlet assembly 15. For example, the control module can make the smoke inlet module 1 operate in a first operating mode by controlling the overlap of the smoke inlet of the first smoke inlet assembly 14 and the smoke inlet of the second smoke inlet assembly 15. Alternatively, the control module can make the smoke inlet module 1 operate in a second operating mode by controlling the non-overlapping of the smoke inlet of the first smoke inlet assembly 14 and the smoke inlet of the second smoke inlet assembly 15.

[0057] In this embodiment, the smoke inlet module 1 includes a first smoke inlet component 14 and a second smoke inlet component 15, which have different smoke inlets. By controlling the first smoke inlet component 14 and the second smoke inlet component 15, the smoke inlet module 1 can be controlled to be in a first working mode or a second working mode, thus enriching the working modes of the range hood.

[0058] In one embodiment, such as Figure 3 As shown, the smoke inlet module 1 also includes a first flipping component 16 connected to the control module. The first smoke inlet component 14 and the second smoke inlet component 15 are both disposed on the first flipping component 16 and rotate based on the first flipping component 16.

[0059] Specifically, both the first smoke inlet assembly 14 and the second smoke inlet assembly 15 are disposed on the first flipping assembly 16, and can rotate around the first flipping assembly 16 as a rotation axis. Therefore, based on different rotation angles, the first smoke inlet assembly 14 and the second smoke inlet assembly 15 can form different angles. In this embodiment, the angle between the first smoke inlet assembly 14 and the second smoke inlet assembly 15 is any angle value within 0° to 180°, determined according to the structural design of the range hood. When the angle between the first smoke inlet assembly 14 and the second smoke inlet assembly 15 is 0° or close to 0°, it can be considered that the first smoke inlet assembly 14 and the second smoke inlet assembly 15 are approximately parallel. In this case, the smoke inlet of the first smoke inlet assembly 14 and the smoke inlet of the second smoke inlet assembly 15 partially overlap, sharing a common smoke inlet channel, which allows the smoke inlet module 1 to be in a first working mode. When the angle between the first smoke inlet assembly 14 and the second smoke inlet assembly 15 is greater than 0°, oil fumes can be absorbed at different positions, improving the smoke extraction effect.

[0060] The structure of the first flipping component 16 is not unique. For example, the first flipping component 16 includes a first rotating shaft and a first flipping motor. The first smoke inlet component 14 and the second smoke inlet component 15 are both disposed on the first rotating shaft. The first rotating shaft is connected to the first flipping motor. The first smoke inlet component 14 and the second smoke inlet component 15 use the first rotating shaft as a fulcrum and are powered by the first flipping motor under the control of the control module to perform a flipping action.

[0061] In this embodiment, the smoke inlet module 1 further includes a first flipping component 16 connected to the control module. The first smoke inlet component 14 and the second smoke inlet component 15 are both disposed on the first flipping component 16. Based on the rotation of the first flipping component 16, different angles can be formed between the first smoke inlet component 14 and the second smoke inlet component 15. By controlling the first flipping component 16, the smoke inlet module 1 can be in different working modes.

[0062] Furthermore, in one embodiment, the first smoke inlet assembly 14 and the second smoke inlet assembly 15 are foldable. Foldable means that the first smoke inlet assembly 14 and the second smoke inlet assembly 15 serve as two folding sections, capable of being folded or unfolded. When the first smoke inlet assembly 14 and the second smoke inlet assembly 15 are folded, they are approximately parallel to each other, and the smoke inlet ports of the first smoke inlet assembly 14 and the second smoke inlet assembly 15 share a single smoke inlet channel. Figure 1 The position shown allows the smoke intake module 1 to operate in the first working mode. When the first smoke intake component 14 and the second smoke intake component 15 are opened, they can form different angles, such as 90°, which allows the smoke intake module 1 to operate in the second working mode. Thus, the first smoke intake component 14 and the second smoke intake component 15 can draw in oil fumes from different positions, enhancing the oil fume extraction effect.

[0063] In this embodiment, the first smoke inlet assembly 14 and the second smoke inlet assembly 15 are foldable. Based on this structure, the smoke inlet module 1 can be controlled to be in the first working mode or the second working mode by controlling the position of the first smoke inlet assembly 14 and the second smoke inlet assembly 15, thereby realizing automatic adjustment of the smoke extraction intensity of the range hood.

[0064] In one embodiment, when the smoke intake module 1 is in the second operating mode, the ideal smoke intake direction of the first smoke intake component 14 is perpendicular to the ideal smoke intake direction of the second smoke intake component 15. The ideal smoke intake direction is determined based on the structure of the first and second smoke intake components 14 and 15. For example, when the first smoke intake component 14 is parallel to the cooktop, its ideal smoke intake direction is perpendicular to the cooktop. When the second smoke intake component 15 is perpendicular to the cooktop, its ideal smoke intake direction is parallel to the cooktop. If the second smoke intake component 15 is parallel to a wall, its ideal smoke intake direction is perpendicular to the wall.

[0065] When the ideal smoke intake direction of the first smoke intake component 14 is perpendicular to the ideal smoke intake direction of the second smoke intake component 15, the first smoke intake component 14 and the second smoke intake component 15 can respectively draw in oil fumes from above the stove and the side of the stove, which can reduce the escape of oil fumes. In addition, the space between the first smoke intake component 14 and the second smoke intake component 15 is not easy to block oil fumes, further improving the oil fume absorption effect.

[0066] In one embodiment, the second smoke inlet assembly 15 includes a smoke guide assembly and a first smoke inlet wall and a second smoke inlet wall disposed opposite to each other. The first smoke inlet wall has an opening, and the smoke guide assembly is disposed on the second smoke inlet wall at a position corresponding to the opening of the first smoke inlet wall. In the first operating mode, the smoke inlet module 1 has the first smoke inlet wall located on the side away from the smoke inlet and the second smoke inlet wall located on the side closer to the smoke inlet, and the smoke guide assembly is open. In the second operating mode, the smoke inlet module 1 has the first smoke inlet wall located on the side closer to the smoke inlet and the second smoke inlet wall located on the side away from the smoke inlet, and the smoke guide assembly is closed.

[0067] The smoke guide assembly can be connected to a control module, which controls its opening and closing. When the smoke guide assembly is open, the opening on the first smoke inlet wall and the location of the smoke guide assembly on the second smoke inlet wall are connected, forming a smoke passage. In the first working mode, the smoke inlet module 1 is located on the side away from the smoke inlet, and the second smoke inlet wall is located on the side closer to the smoke inlet. When the smoke guide assembly is open, the opening on the first smoke inlet wall, the opened smoke guide assembly on the second smoke inlet wall, and the smoke inlet of the first smoke inlet assembly 14 are all connected, forming a smoke inlet passage. The fumes generated by the cooking appliance 2 pass sequentially through the opening on the first smoke inlet wall, the opened smoke guide assembly on the second smoke inlet wall, and the smoke inlet of the first smoke inlet assembly 14 to reach the range hood body.

[0068] When the smoke guiding assembly is closed, the second smoke inlet wall is closed and cannot allow fumes to pass through. Fumes can enter the channel formed between the first and second smoke inlet walls through the opening on the first smoke inlet wall. In the second operating mode, part of the fumes from the smoke inlet module 1 are drawn into the range hood body through the first smoke inlet assembly 14, and the other part is drawn into the body through the second smoke inlet assembly 15. The fumes drawn in through the second smoke inlet assembly 15 first enter the channel formed between the first and second smoke inlet walls through the opening on the first smoke inlet wall, and then are drawn into the range hood body.

[0069] In this embodiment, the second smoke inlet assembly 15 includes a smoke guide assembly, and a first smoke inlet wall and a second smoke inlet wall disposed opposite to each other. The first smoke inlet wall has an opening, and the smoke guide assembly is disposed on the second smoke inlet wall at a position corresponding to the opening of the first smoke inlet wall. Based on this structure, the smoke extraction channel can be adjusted by controlling the opening or closing state of the smoke guide assembly, making it more convenient to control the working state of the range hood.

[0070] In one embodiment, such as Figure 4 As shown, the smoke guiding assembly includes a first smoke guiding plate 44, a second smoke guiding plate 45, a second flipping assembly, and a third flipping assembly. The first smoke guiding plate 44 is disposed on the second flipping assembly and rotates based on the rotation of the second flipping assembly. The second smoke guiding plate 45 is disposed on the third flipping assembly and rotates based on the rotation of the third flipping assembly. When the first smoke guiding plate 44 and the second smoke guiding plate 45 are parallel, the smoke guiding assembly is in the closed state.

[0071] Specifically, the first smoke guide plate 44 is disposed on the second flipping assembly and can rotate around the second flipping assembly as a rotation axis. The second smoke guide plate 45 is disposed on the third flipping assembly and can rotate around the third flipping assembly as a rotation axis. Therefore, based on the different rotation angles of the first smoke guide plate 44 and the second smoke guide plate 45, the first smoke guide plate 44 and the second smoke guide plate 45 can be parallel or form different angles. When the first smoke guide plate 44 and the second smoke guide plate 45 are parallel, the first smoke guide plate 44 and the second smoke guide plate 45 are closed, the smoke guiding assembly is in a closed state, and basically no oil fumes can pass through. When the first smoke guide plate 44 and the second smoke guide plate 45 are not parallel, such as... Figure 4 As shown, there is an opening between the first smoke guide plate 44 and the second smoke guide plate 45, and the smoke guide assembly is in the open state, allowing oil fumes to pass through.

[0072] The structures of the second and third flip components are not unique; for example, as shown below... Figure 4As shown, the second flipping assembly includes a second rotating shaft 41 and a second flipping motor 42, and the third flipping assembly includes a third rotating shaft 46 and a third flipping motor 47. A first smoke guide plate 44 is disposed on the second rotating shaft 41, which is connected to the second flipping motor 42. A second smoke guide plate 45 is disposed on the third rotating shaft 46, which is connected to the third flipping motor 47. Both the second flipping motor 42 and the third flipping motor 47 can be connected to a control module. The first smoke guide plate 44, with the second rotating shaft 41 as its fulcrum, is flipped under the control of the control module and powered by the second flipping motor 42. The second smoke guide plate 45, with the third rotating shaft 46 as its fulcrum, is flipped under the control of the control module and powered by the third flipping motor 47.

[0073] In this embodiment, the smoke guiding assembly includes a first smoke guiding plate 44, a second smoke guiding plate 45, a second flipping assembly, and a third flipping assembly. The first smoke guiding plate 44 is disposed on the second flipping assembly. Based on the rotation of the second flipping assembly, the second smoke guiding plate 45 is disposed on the third flipping assembly. Based on the rotation of the third flipping assembly, when the first smoke guiding plate 44 and the second smoke guiding plate 45 are parallel, the smoke guiding assembly is in a closed state. Therefore, the positions of the first smoke guiding plate 44 and the second smoke guiding plate 45 can be adjusted by the second flipping assembly and the third flipping assembly, thereby controlling the opening and closing state of the smoke guiding assembly, which is convenient.

[0074] In one embodiment, the smoke intake status detection module 4 includes an infrared detection device, and the smoke intake status detection result includes the height of the cooking appliance 2. The infrared detection device is used to detect the height of the cooking appliance 2 and send it to the control module. When the height of the cooking appliance 2 is greater than a preset height threshold, the control module controls the smoke intake module 1 to be in a first working mode.

[0075] The height of the cooking appliance 2 can represent the concentration of cooking fumes. The higher the cooking appliance 2 is, the closer the distance between the cooking appliance 2 and the range hood body, which can be considered as a higher concentration of cooking fumes. Conversely, the lower the cooking appliance 2 is, the farther the distance between the cooking appliance 2 and the range hood body, which can be considered as a lower concentration of cooking fumes and a more dispersed cooking fume.

[0076] An infrared detection device is installed on the range hood body, specifically on the side of the range hood body closest to the cooking appliance 2. It can detect the distance between the cooking appliance 2 and the range hood body, as well as the distance between the stove and the range hood body. Based on these distances, the height of the cooking appliance 2 is determined. The infrared detection device can also directly detect the height of the cooking appliance 2. After detecting the height of the cooking appliance 2, the infrared detection device sends the result to the control module. The control module compares the height of the cooking appliance 2 with a preset height threshold. If the height of the cooking appliance 2 is greater than the preset height threshold, it is considered that the height of the cooking appliance 2 is relatively high, the oil fumes are more concentrated, and they can reach the range hood body more quickly with less oil fume dispersion. In this case, the control module controls the smoke intake module 1 to operate in the first working mode, achieving a good smoke extraction effect even with a lower smoke extraction intensity. It is understood that when the height of the cooking appliance 2 is less than or equal to a preset height threshold, it is considered that the cooking appliance 2 is relatively far from the range hood body, and some oil fumes may escape. In this case, the working mode of the range hood module can be adjusted in conjunction with other parameters, such as adjusting the working mode of the range hood module based on the oil fume concentration. Alternatively, in this case, the range hood module can be directly controlled to be in a second working mode, increasing the number of smoke inlets and increasing the smoke absorption intensity to enhance the absorption effect of oil fumes. In addition, in other embodiments, the smoke inlet status detection module 4 can also be other types of devices, as long as those skilled in the art believe it is feasible.

[0077] In this embodiment, the smoke intake status detection module 4 includes an infrared detection device, and the smoke intake status detection result includes the height of the cooking appliance 2. The infrared detection device is used to detect the height of the cooking appliance 2 and send it to the control module. When the height of the cooking appliance 2 is greater than a preset height threshold, the control module controls the smoke intake module 1 to be in a first working mode. Adjusting the working mode of the smoke intake module 1 according to the height of the cooking appliance 2 can make the smoke extraction intensity more consistent with the actual situation, ensuring the smoke extraction effect while also saving resources.

[0078] In one embodiment, the smoke inlet status detection module 4 includes an oil fume concentration detection device, and the smoke inlet status detection result includes the oil fume concentration. The oil fume concentration detection device is used to detect the oil fume concentration and send it to the control module. When the oil fume concentration is greater than a preset concentration threshold, the control module controls the smoke inlet module 1 to enter a second working mode.

[0079] The fume concentration detection device is installed on the range hood body, specifically on the side of the range hood body closest to the cooking appliance 2. The fume concentration detection device detects the fume concentration and sends the data to the control module. The control module compares the fume concentration with a preset concentration threshold. When the fume concentration is greater than the preset concentration threshold, it is considered that the fume concentration is high and there is a lot of fume. At this time, the control module controls the fume intake module 1 to be in a second working mode, using more fume inlets to absorb the fume and enhance the fume absorption intensity. It can be understood that when the fume concentration is less than or equal to the preset concentration threshold, it is considered that the fume concentration is low and there is less fume. At this time, the control module can adjust the working mode of the fume intake module 1 in conjunction with other parameters, such as adjusting the working mode based on the height of the cooking appliance 2. Alternatively, when the fume concentration is less than or equal to the preset concentration threshold, the control module can also directly control the fume intake module 1 to be in a first working mode, using fewer fume inlets to absorb the fume, in order to save energy.

[0080] In addition, in other embodiments, the smoke inlet status detection module 4 can be other types of devices, as long as those skilled in the art believe it is feasible.

[0081] In this embodiment, the smoke intake status detection module 4 includes an oil fume concentration detection device, and the detection result includes the oil fume concentration. The oil fume concentration detection device is used to detect the oil fume concentration and send it to the control module. When the oil fume concentration is greater than a preset concentration threshold, the control module controls the smoke intake module 1 to enter a second working mode. Adjusting the working mode of the smoke intake module 1 according to the oil fume concentration can make the oil fume extraction intensity more consistent with the actual situation, ensuring the oil fume extraction effect while also saving resources.

[0082] In one embodiment, the smoke intake status detection module 4 includes an infrared detection device and an oil fume concentration detection device. The smoke intake status detection results include the height of the cooking appliance 2 and the oil fume concentration. The infrared detection device detects the height of the cooking appliance 2 and sends the data to the control module. The oil fume concentration detection device detects the oil fume concentration and sends the data to the control module. The control module controls the smoke intake module 1 to operate in a first working mode when the height of the cooking appliance 2 is less than or equal to a preset height threshold and the oil fume concentration is less than or equal to a preset concentration threshold. The control module also controls the smoke intake module 1 to operate in a second working mode when the height of the cooking appliance 2 is less than or equal to the preset height threshold and the oil fume concentration is greater than the preset concentration threshold.

[0083] Specifically, the control module first compares the height of the cooking appliance 2 with a preset height threshold. When the height of the cooking appliance 2 is greater than the preset height threshold, the smoke intake module 1 is controlled to operate in the first working mode. When the height of the cooking appliance 2 is less than or equal to the preset height threshold, the working mode of the smoke intake module 1 is further adjusted based on the oil fume concentration. When the height of the cooking appliance 2 is less than or equal to the preset height threshold, and the oil fume concentration is less than or equal to the preset concentration threshold, considering that the distance between the cooking appliance 2 and the range hood body is relatively far, but the oil fume concentration is low, the smoke intake module 1 is controlled to operate in the first working mode, absorbing oil fumes at a lower intensity. When the height of the cooking appliance 2 is less than or equal to the preset height threshold, and the oil fume concentration is greater than the preset concentration threshold, considering that the distance between the cooking appliance 2 and the range hood body is relatively far, and the oil fume concentration is high, the smoke intake module 1 is controlled to operate in the second working mode, absorbing oil fumes at a higher intensity to improve the oil fume absorption effect.

[0084] In this embodiment, the smoke intake status detection module 4 includes an infrared detection device and an oil fume concentration detection device. The smoke intake status detection results include the height of the cooking appliance 2 and the oil fume concentration. The infrared detection device detects the height of the cooking appliance 2 and sends the data to the control module. The oil fume concentration detection device detects the oil fume concentration and sends the data to the control module. The control module controls the smoke intake module 1 to operate in a first working mode when the height of the cooking appliance 2 is less than or equal to a preset height threshold and the oil fume concentration is less than or equal to a preset concentration threshold. The control module also controls the smoke intake module 1 to operate in a second working mode when the height of the cooking appliance 2 is less than or equal to the preset height threshold and the oil fume concentration is greater than the preset concentration threshold. By adjusting the working mode of the smoke intake module 1 in conjunction with the height of the cooking appliance 2 and the oil fume concentration, the smoke extraction intensity can be made more consistent with the actual situation, ensuring the smoke extraction effect while also saving resources.

[0085] In one embodiment, a control method for a range hood is provided. This method can be implemented based on the range hoods described in the above embodiments and executed by the control module of the range hood. Alternatively, it can be implemented based on a server or similar platform. The following description uses the example of the control method being executed by the control module of the range hood. Figure 5 As shown, the control method for a range hood includes the following steps:

[0086] Step 502: Obtain the smoke inlet status detection results.

[0087] The smoke intake status detection result is obtained by the smoke intake status detection module 4 after detecting the smoke intake status of the target area. The smoke intake status detection module 4 is used to detect the smoke intake status of the target area, which is typically the area between the cooking appliance 2 and the range hood body. The smoke intake status of the target area characterizes the oil fume status in the current cooking scenario and can include various types of parameters, such as oil fume concentration and oil fume range. The type of smoke intake status detection module 4 is not unique; it only needs to be able to detect the smoke intake status of the target area. The smoke intake status detection module 4 detects the smoke intake status of the target area and generates a smoke intake status detection result, which is then sent to the control module. The smoke intake status detection result, as a quantitative result of the smoke intake status, is sent to the control module and can be used by the control module as a basis for subsequent control.

[0088] Step 504: Control the smoke inlet module to either the first working mode or the second working mode based on the smoke inlet status detection result.

[0089] In this embodiment, the number of smoke inlets in the smoke inlet module 1 in the first operating mode is less than the number of smoke inlets in the second operating mode. The control module, as the main control device of the range hood, can control the operating status and mode of multiple components within the range hood. For example, the control module can control the range hood's on / off state, and also control the motor's operating state, thereby controlling the range hood's speed settings. In this embodiment, after receiving the smoke inlet status detection result from the smoke inlet status detection module 4, the control module controls the operating mode of the smoke inlet module 1 according to the smoke inlet status detection structure.

[0090] The smoke inlet module 1 is a module used for smoke intake, typically including a smoke inlet channel. A motor inside the range hood drives the blades to rotate, generating suction that draws external fumes into the range hood through the smoke inlet module 1. The control module controls the smoke inlet module 1 to operate in either a first or second working mode based on the smoke intake status detection results. In the first working mode, the number of smoke inlets in the smoke inlet module 1 is less than the number of smoke inlets in the second working mode; that is, the number of smoke inlets actually used in the first working mode is less than the number of smoke inlets actually used in the second working mode. It can be understood that the smoke inlet module 1 has at least two smoke inlets. Furthermore, the different smoke inlets of the smoke inlet module 1 are located in different positions, allowing for the absorption of fumes at different locations.

[0091] Taking the smoke inlet module 1, which includes two smoke inlets, as an example, in the first working mode, the smoke inlet module 1 has one smoke inlet, or it can be understood that the smoke inlet module 1 has one smoke inlet in use. In the second working mode, the smoke inlet module 1 has two smoke inlets, or it can be understood that the smoke inlet module 1 has two smoke inlets in use.

[0092] When the smoke intake module 1 is in either the first or second working mode, the number of smoke inlets and the number of inlets actually in use differ, resulting in varying levels of smoke absorption intensity and even different locations for smoke absorption. The control module controls the smoke intake module 1 to operate in either the first or second working mode based on the smoke intake status detection results. It can adjust the working mode of the smoke intake module 1 according to the actual smoke conditions, thereby adjusting the smoke absorption intensity. For example, when there is less smoke, the smoke intake module 1 can be controlled to operate in the first working mode, resulting in a lower smoke absorption intensity and conserving resources. When there is more smoke, the smoke intake module 1 can be controlled to operate in the second working mode, resulting in a higher smoke absorption intensity, ensuring effective smoke absorption and reducing smoke escape.

[0093] In one embodiment, the smoke intake status detection result includes the height of the cooking appliance 2, and step 504 includes: when the height of the cooking appliance 2 is greater than a preset height threshold, controlling the smoke intake module 1 to be in a first working mode.

[0094] The height of the cooking appliance 2 can represent the concentration of cooking fumes. The higher the cooking appliance 2 is, the closer the distance between the cooking appliance 2 and the range hood body, which can be considered as a higher concentration of cooking fumes. Conversely, the lower the cooking appliance 2 is, the farther the distance between the cooking appliance 2 and the range hood body, which can be considered as a lower concentration of cooking fumes and a more dispersed cooking fume.

[0095] The height of cooking appliance 2 can be detected by an infrared detection device. This device is installed on the range hood body, specifically on the side of the range hood body closest to cooking appliance 2. It can detect the distance between cooking appliance 2 and the range hood body, as well as the distance between the stovetop and the range hood body. Based on these distances, the height of cooking appliance 2 is determined. Alternatively, the infrared detection device can directly detect the height of cooking appliance 2. After detecting the height of cooking appliance 2, the infrared detection device sends the result to the control module. The control module compares the height of cooking appliance 2 with a preset height threshold. If the height of cooking appliance 2 is greater than the preset height threshold, it is considered that the height of cooking appliance 2 is relatively high, the fumes are more concentrated, and they can reach the range hood body more quickly with less fumes escaping. In this case, the control module controls the smoke intake module 1 to operate in the first working mode, achieving a good smoke extraction effect even with a lower smoke extraction intensity.

[0096] It is understood that when the height of the cooking appliance 2 is less than or equal to a preset height threshold, it is considered that the cooking appliance 2 is relatively far from the range hood body, and some oil fumes may escape. In this case, the working mode of the range hood module can be adjusted in conjunction with other parameters, such as adjusting the working mode of the range hood module based on the oil fume concentration. Alternatively, in this case, the range hood module can be directly controlled to be in a second working mode, increasing the number of smoke inlets and increasing the smoke absorption intensity to enhance the absorption effect of oil fumes. In addition, in other embodiments, the smoke inlet status detection module 4 can also be other types of devices, as long as those skilled in the art believe it is feasible.

[0097] In one embodiment, the smoke intake status detection result includes the oil fume concentration, and step 504 includes: when the oil fume concentration is greater than a preset concentration threshold, controlling the smoke intake module 1 to be in a second working mode.

[0098] The concentration of cooking fumes can be detected by a fume concentration detection device. This device is located on the range hood body, specifically on the side closest to the cooking appliance 2. The fume concentration detection device detects the fume concentration and sends the data to the control module. The control module compares the fume concentration with a preset concentration threshold. When the fume concentration is greater than the preset threshold, it is considered high, indicating a large amount of cooking fumes. In this case, the control module controls the fume intake module 1 to operate in a second mode, using a larger number of intake vents to enhance fume absorption. Conversely, when the fume concentration is less than or equal to the preset threshold, it is considered low, indicating less cooking fumes. In this case, the control module can adjust the operating mode of the fume intake module 1 based on other parameters, such as the height of the cooking appliance 2. Alternatively, when the fume concentration is less than or equal to the preset threshold, the control module can directly control the fume intake module 1 to operate in a first mode, using a smaller number of intake vents to save energy.

[0099] In one embodiment, the smoke intake status detection result includes the height of the cooking appliance 2 and the oil fume concentration. Step 504 includes: when the height of the cooking appliance 2 is less than or equal to a preset height threshold and the oil fume concentration is less than or equal to a preset concentration threshold, controlling the smoke intake module 1 to be in a first working mode; when the height of the cooking appliance 2 is less than or equal to the preset height threshold and the oil fume concentration is greater than the preset concentration threshold, controlling the smoke intake module 1 to be in a second working mode.

[0100] Specifically, the control module first compares the height of the cooking appliance 2 with a preset height threshold. When the height of the cooking appliance 2 is greater than the preset height threshold, the smoke intake module 1 is controlled to operate in the first working mode. When the height of the cooking appliance 2 is less than or equal to the preset height threshold, the working mode of the smoke intake module 1 is further adjusted based on the oil fume concentration. When the height of the cooking appliance 2 is less than or equal to the preset height threshold, and the oil fume concentration is less than or equal to the preset concentration threshold, considering that the distance between the cooking appliance 2 and the range hood body is relatively far, but the oil fume concentration is low, the smoke intake module 1 is controlled to operate in the first working mode, absorbing oil fumes at a lower intensity. When the height of the cooking appliance 2 is less than or equal to the preset height threshold, and the oil fume concentration is greater than the preset concentration threshold, considering that the distance between the cooking appliance 2 and the range hood body is relatively far, and the oil fume concentration is high, the smoke intake module 1 is controlled to operate in the second working mode, absorbing oil fumes at a higher intensity to improve the oil fume absorption effect.

[0101] To better understand the above embodiments, a detailed explanation is provided below with reference to a specific embodiment. In one embodiment, a range hood design structure that can automatically change the shape of the smoke inlet is proposed. The smoke inlet component is modularized, and the smoke inlet rotates according to the cooking situation or user selection, thereby increasing the number of smoke inlets closer to the stove, which is more conducive to the absorption of oil fumes, prevents oil fumes from escaping, and improves the user experience.

[0102] Specifically, such as Figure 1-4 As shown, the range hood includes a range hood body, a control module, a smoke inlet status detection module, and a smoke inlet module 1. The range hood body includes a volute assembly 3. The smoke inlet status detection module includes an infrared detection device 12 and a smoke concentration detection device 13. The smoke inlet module includes a first smoke inlet assembly, a second smoke inlet assembly, and a first tilting assembly. The first tilting assembly includes a first rotating shaft 52 and a first tilting motor 51. The second smoke inlet assembly includes a smoke guide assembly and a first smoke inlet wall and a second smoke inlet wall arranged opposite to each other. The smoke guide assembly includes a first smoke guide plate 44, a second smoke guide plate 45, a second tilting assembly, and a third tilting assembly. The second tilting assembly includes a second rotating shaft 41 and a second tilting motor 42. The third tilting assembly includes a third rotating shaft 46 and a third tilting motor 47.

[0103] In its initial state, the smoke inlet module 1 is located directly below the range hood. One or more infrared detection devices 12 and oil fume concentration detection devices 13 are installed on the range hood body. The smoke guiding assembly includes a first smoke guide plate 44 and a second smoke guide plate 45. The infrared detection devices 12 and oil fume concentration detection devices 13 face downwards towards the cooking appliance 2 (also known as a pot), and are used to detect the height of the cooking appliance and the concentration of oil fumes generated above it.

[0104] The first flipping assembly includes a first rotating shaft 52 and a first flipping motor 51. The second smoke inlet assembly uses the first rotating shaft 52 as a fulcrum and is powered by the first flipping motor 51 to perform a flipping action.

[0105] The smoke guiding assembly includes a bearing 43, a first smoke guiding plate 44, a second smoke guiding plate 45, a second tilting assembly, and a third tilting assembly. The second tilting assembly includes a second rotating shaft 41 and a second tilting motor 42, and the third tilting assembly includes a third rotating shaft 46 and a third tilting motor 47. The first smoke guiding plate 44 is tilted around the second rotating shaft 41, powered by the second tilting motor 42. The second smoke guiding plate 45 is tilted around the third rotating shaft 46, powered by the third tilting motor 47.

[0106] like Figure 6 As shown, the control method of the range hood includes the following steps: When the range hood is turned on, the infrared detection device 12 first detects the height of the pot below the range hood. When the pot is a tall steamer or similar item, and its height exceeds the preset height threshold H, the smoke intake module does not operate. The second smoke intake component folds down with the first smoke intake component, and the second smoke intake component does not move. The guide plate of the second smoke intake component is opened. At this time, the taller pot is closer to the upper smoke intake, which is more conducive to the absorption of oil fumes. When the height of the pot is less than H, the oil fume concentration detection device is activated. When the concentration at the smoke intake is less than the preset concentration threshold A, the smoke intake module does not operate. When the oil fume concentration is greater than A, the second smoke intake component is rotated 90°, and the guide plate of the second smoke intake component is kept closed. At this time, there are two smoke intakes, one above (first smoke intake component) and one below (second smoke intake component). The lower smoke intake is closer to the pot. The lower smoke intake absorbs the main oil fumes, while the upper smoke intake absorbs the escaping oil fumes, achieving ultimate absorption of oil fumes and preventing escape.

[0107] This application proposes a range hood design with an automatically changing smoke inlet shape. This solves the problem of smoke escape during complex cooking processes with high smoke volumes, as well as user fatigue due to a monotonous overall design. By modularizing the smoke inlet component, the smoke inlet rotates according to cooking conditions or user selection, thereby increasing the number of smoke inlets closer to the cooktop, which is more conducive to smoke absorption, prevents smoke escape, and improves the user experience.

[0108] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0109] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0110] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A range hood, characterized in that, The system includes a range hood body, a control module, and a smoke inlet status detection module and a smoke inlet module disposed on the range hood body. Both the smoke inlet status detection module and the smoke inlet module are connected to the control module. The smoke inlet module includes a first smoke inlet component, a second smoke inlet component, and a first flip component connected to the control module. The first smoke inlet component and the second smoke inlet component have different smoke inlets. Both the first smoke inlet component and the second smoke inlet component are disposed on the first flip component and rotate based on the first flip component. The smoke intake status detection module is used to detect the smoke intake status of the target area, generate a smoke intake status detection result and send it to the control module. The smoke intake status detection result includes the height of the cooking utensils and the concentration of oil fumes. The control module is used to control the smoke intake module to be in a first working mode when the height of the cooking appliance is greater than a preset height threshold; to control the smoke intake module to be in a first working mode when the height of the cooking appliance is less than or equal to the preset height threshold and the oil fume concentration is less than or equal to a preset concentration threshold; and to control the smoke intake module to be in a second working mode when the height of the cooking appliance is less than or equal to the preset height threshold and the oil fume concentration is greater than the preset concentration threshold; wherein, the number of smoke inlets in the smoke intake module in the first working mode is less than the number of smoke inlets in the smoke intake module in the second working mode.

2. The range hood according to claim 1, characterized in that, The first smoke inlet assembly and the second smoke inlet assembly are foldable.

3. The range hood according to claim 1, characterized in that, In the second working mode, the ideal smoke inlet direction of the first smoke inlet component is perpendicular to the ideal smoke inlet direction of the second smoke inlet component.

4. The range hood according to claim 1, characterized in that, The second smoke inlet assembly includes a smoke guide assembly, and a first smoke inlet wall and a second smoke inlet wall disposed opposite to each other. The first smoke inlet wall has an opening, and the smoke guide assembly is disposed on the second smoke inlet wall at a position corresponding to the opening of the first smoke inlet wall. In the first operating mode, the first smoke inlet wall is located on the side away from the smoke inlet, the second smoke inlet wall is located on the side closer to the smoke inlet, and the smoke guiding component is open; in the second operating mode, the first smoke inlet wall is located on the side closer to the smoke inlet, the second smoke inlet wall is located on the side away from the smoke inlet, and the smoke guiding component is closed.

5. The range hood according to claim 4, characterized in that, The smoke guiding assembly includes a first smoke guiding plate, a second smoke guiding plate, a second flipping assembly, and a third flipping assembly. The first smoke guiding plate is disposed on the second flipping assembly and rotates based on the second flipping assembly. The second smoke guiding plate is disposed on the third flipping assembly and rotates based on the third flipping assembly. When the first smoke guiding plate and the second smoke guiding plate are parallel, the smoke guiding assembly is in a closed state.

6. The range hood according to claim 1, characterized in that, The smoke inlet detection module includes an infrared detection device, which is used to detect the height of the cooking appliance and send the data to the control module.

7. The range hood according to claim 1, characterized in that, The smoke inlet status detection module includes an oil fume concentration detection device; The oil fume concentration detection device is used to detect the oil fume concentration and send the data to the control module.

8. A control method for a range hood, characterized in that, The range hood includes a range hood body, a control module, and a smoke inlet status detection module and a smoke inlet module disposed on the range hood body. Both the smoke inlet status detection module and the smoke inlet module are connected to the control module. The smoke inlet module includes a first smoke inlet component, a second smoke inlet component, and a first tilting component connected to the control module. The first smoke inlet component and the second smoke inlet component have different smoke inlets. Both the first smoke inlet component and the second smoke inlet component are disposed on the first tilting component and rotate based on the first tilting component. The method includes: Obtain the smoke intake status detection result; the smoke intake status detection result is obtained by the smoke intake status detection module after detecting the smoke intake status of the target area, and the smoke intake status detection result includes the height of the cooking utensils and the oil fume concentration; When the height of the cooking appliance is greater than a preset height threshold, the smoke intake module is controlled to be in a first working mode; When the height of the cooking appliance is less than or equal to a preset height threshold and the oil fume concentration is less than or equal to a preset concentration threshold, the smoke intake module is controlled to be in the first working mode. When the height of the cooking appliance is less than or equal to a preset height threshold and the oil fume concentration is greater than a preset concentration threshold, the smoke intake module is controlled to be in the second working mode. In the first working mode, the number of smoke inlets of the smoke inlet module is less than the number of smoke inlets of the smoke inlet module in the second working mode.

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