Range hood control method and range hood

Abstract

The invention relates to the technical field of range hoods, and discloses a range hood control method and a range hood. Under the condition that the range hood is in a standby state, a first sensor is controlled to intermittently operate based on a preset closing duration and a preset operation duration; and if the particulate matter concentration meets the range hood starting logic within the preset operation duration, the range hood is controlled to enter the operation state. When the range hood is in the standby state, the first sensor is controlled to operate intermittently, so that the operation duration of the first sensor is shortened, and the service life of the first sensor is prolonged; meanwhile, whether the starting logic of the range hood is met or not is judged based on the particulate matter concentration detected by the first sensor during operation, whether the range hood enters an operation state or not is controlled, the starting control reliability of the range hood is guaranteed, and false triggering of starting of the range hood is avoided; therefore, it is guaranteed that the first sensor can be normally used for detecting the particulate matter concentration in the using process of the range hood, the starting reliability of the range hood is controlled based on the detected particulate matter concentration, and therefore normal use of the automatic starting function of the range hood is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of tobacco appliance technology, and in particular to a tobacco appliance control method and a tobacco appliance. Background Technology

[0002] To enable intelligent operation of range hoods, various sensors are usually installed in them, such as using a PM2.5 sensor to enable automatic start-up of the range hood.

[0003] However, currently, a fixed PM2.5 concentration value is usually used as the condition for the range hood to start. The range hood will automatically start when the PM2.5 concentration value in the external environment exceeds the set PM2.5 concentration value. However, the range hood is prone to being falsely triggered when the environmental quality is poor. In addition, in order to ensure the rapid response of the range hood, the PM2.5 sensor is often kept in a powered-on state, which greatly shortens the life of the PM2.5 sensor, affects the use of the automatic start function of the range hood, and reduces the reliability of the range hood start control. Summary of the Invention

[0004] The first technical problem solved by this invention is to provide a range hood control method that can improve the service life of the PM2.5 sensor and ensure the normal operation of the range hood's automatic start-up function.

[0005] The second technical problem solved by this invention is to provide a range hood that can improve the service life of the PM2.5 sensor and ensure the normal operation of the range hood's automatic start-up function.

[0006] The first technical problem mentioned above is solved by the following technical solution: A method for controlling a range hood, the method comprising: When the range hood is in standby mode, the first sensor is controlled to run intermittently based on a preset off time and a preset running time. The first sensor is used to detect the concentration of particulate matter in the current environment in real time during operation. If the particulate matter concentration meets the start-up logic of the range hood within the preset running time, the range hood will be controlled to enter the running state.

[0007] Compared with the prior art, the range hood control method of the present invention has the following advantages: when the range hood is in standby mode, the first sensor used to detect particulate matter concentration is controlled to run intermittently, thereby reducing the running time of the first sensor and improving its service life; at the same time, based on the particulate matter concentration detected by the first sensor during operation, it is determined whether the range hood start-up logic is met, and the range hood is controlled to enter the running state, ensuring the reliability of the range hood start-up control and avoiding false triggering of the range hood start-up; thus, it ensures that the first sensor can be used normally to detect particulate matter concentration and the reliability of controlling the range hood start-up based on the detected particulate matter concentration can be guaranteed during the use of the range hood, thereby ensuring the normal use of the range hood's automatic start-up function.

[0008] In one embodiment, the preset runtime includes a first runtime and a second runtime; the range hood activation logic includes: Based on the particulate matter concentration detected during the first running time, the concentration change trend corresponding to the first running time is determined. If the concentration change trend corresponding to the first running time is an upward trend, then control the smoke machine to enter the running state; If the concentration change trend corresponding to the first running time is the second upward trend, then the first sensor is controlled to continue running for the second running time, wherein the rate of increase corresponding to the first upward trend is greater than the rate of increase corresponding to the second upward trend. If the concentration change trend corresponding to the first running time is no upward trend, then control the first sensor to turn off for a preset off time.

[0009] In one embodiment, the first upward trend is: the difference between the particulate matter concentration and the particulate matter concentration benchmark value is greater than a first preset difference, and the rate of change of the particulate matter concentration is greater than a first rate of change. The second upward trend is characterized by particulate matter concentrations exceeding the baseline value and the rate of change of particulate matter concentrations exceeding the second rate of change. The first rate of change is greater than the second rate of change.

[0010] In one embodiment, after controlling the first sensor to continue operating for a second running period, the method further includes: Based on the particulate matter concentration detected during the second running time, the concentration change trend corresponding to the second running time is determined; If the concentration change trend corresponding to the second running time is the third upward trend, then control the smoke machine to enter the running state; If the concentration change trend corresponding to the second running time is not the third upward trend, then control the first sensor to turn off for a preset off time.

[0011] In one embodiment, the third upward trend is: the difference between the particulate matter concentration and the particulate matter concentration benchmark value is greater than the second preset difference, and the rate of change of particulate matter concentration is greater than the third rate of change.

[0012] In one embodiment, the method further includes: If the concentration change trend corresponding to the first running time is the second upward trend, then the particulate matter concentration baseline value is updated based on the particulate matter concentration detected within the first running time.

[0013] In one embodiment, the method further includes: If the concentration change trend corresponding to the second running time is not the third upward trend, then the particulate matter concentration baseline value is updated based on the particulate matter concentration detected during the second running time.

[0014] In one embodiment, after the range hood is put into operation, the following steps are also included: Control the second sensor to detect the real-time smoke concentration in the current environment; Based on the real-time smoke concentration, determine and adjust the airflow of the smoke hood.

[0015] In one embodiment, determining and adjusting the airflow of the smoke hood based on real-time smoke concentration includes: Based on the preset correspondence between smoke concentration and range hood air volume, determine the baseline value of range hood air volume corresponding to the real-time smoke concentration; Based on the rate of change of real-time smoke concentration within a preset time period, the baseline value of the range hood air volume is corrected to obtain the range hood air volume.

[0016] In one embodiment, the range hood airflow reference value is corrected based on the rate of change of real-time smoke concentration over a preset time period to obtain the range hood airflow, including: If the rate of change of smoke concentration within a preset time period is greater than the fourth rate of change, the smoke hood air volume base value is increased by the smoke hood air volume correction value to obtain the smoke hood air volume; If the rate of change of smoke concentration within a preset time period is less than the fifth rate of change, the range hood air volume base value is reduced by the range hood air volume correction value to obtain the range hood air volume.

[0017] In one embodiment, after the range hood is put into operation, the following steps are also included: If the difference between the particulate matter concentration benchmark value and the detected particulate matter concentration is greater than the third preset difference value, and the smoke concentration is less than the smoke concentration threshold, the smoke hood will be controlled to enter standby mode. Update the particulate matter concentration baseline based on the detected particulate matter concentration.

[0018] The second technical problem mentioned above is solved by the following technical solution: A range hood includes a controller for performing the range hood control method described in any embodiment. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic flowchart of a smoke hood control method provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the process for adjusting the air volume of a range hood in a range hood control method provided in an embodiment of the present invention. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0023] To achieve intelligent operation of range hoods, various sensors are typically installed, such as PM2.5 sensors to enable automatic start-up. However, currently, a fixed PM2.5 concentration value is usually used as the criterion for start-up. The range hood automatically turns on when the ambient PM2.5 concentration exceeds the set value. But this can easily trigger the range hood falsely in poor air quality. Furthermore, to ensure a rapid response, the PM2.5 sensor is often kept powered on continuously, significantly shortening its lifespan and affecting the usability of the automatic start-up function, thus reducing the reliability of the range hood's start-up control.

[0024] Furthermore, in related technologies, the range hood is usually controlled to operate at a low speed when the oil fume concentration is low and at a high speed when the oil fume concentration is high. However, when the oil fume concentration changes abruptly, the range hood speed cannot be adjusted in time to follow the change in oil fume concentration. Moreover, at this time, the data detected by the oil fume sensor fluctuates greatly, which further affects the accuracy of the range hood speed adjustment.

[0025] To address the aforementioned technical problems, this invention provides a range hood control method. When the range hood is in standby mode, this method controls a first sensor to operate intermittently based on a preset off time and a preset running time. During operation, the first sensor detects the concentration of particulate matter in the current environment in real time. If the particulate matter concentration meets the range hood's start-up logic within the preset running time, the range hood is controlled to enter the running state. Controlling the first sensor to detect particulate matter concentration to operate intermittently while the range hood is in standby mode reduces the sensor's running time and extends its lifespan. Simultaneously, based on the particulate matter concentration detected by the first sensor during operation, it determines whether the range hood's start-up logic is met, controlling whether the range hood enters the running state, ensuring the reliability of the range hood's start-up control and avoiding false triggering. This ensures that the first sensor can reliably detect particulate matter concentration and control the range hood's start-up based on the detected particulate matter concentration during use, thus guaranteeing the normal operation of the range hood's automatic start-up function.

[0026] The following is combined Figures 1 to 2 The following describes embodiments of the present invention.

[0027] According to an embodiment of the present invention, a method for controlling a smoke hood is provided. Figure 1 This is a flowchart illustrating a smoke hood control method provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the method may include the following steps: Step S101: When the range hood is in standby mode, control the first sensor to run intermittently based on a preset off time and a preset running time.

[0028] In this embodiment of the invention, the standby state of the range hood refers to the state where the range hood is powered on but not started. The first sensor is used to detect the concentration of particulate matter in the current environment in real time during operation. The first sensor can be any sensor capable of detecting particulate matter concentration, such as a PM2.5 sensor. When the range hood is in standby state, the first sensor is controlled to operate intermittently based on a preset off time and a preset running time, thereby avoiding the first sensor from being continuously powered on and thus extending its service life.

[0029] In this embodiment of the invention, the preset shutdown time is a fixed preset duration. The preset running time is dynamically adjusted based on the particulate matter concentration detected in real time by the first sensor. When an upward trend in the particulate matter concentration is detected, the running time of the first sensor is extended to avoid the inability to identify the upward trend in particulate matter concentration in time due to the intermittent operation of the first sensor based on a fixed duration, thus causing the opportunity to turn on the range hood to be missed.

[0030] Step S102: If the particulate matter concentration meets the smoke hood start-up logic within the preset running time, control the smoke hood to enter the running state.

[0031] In this embodiment of the invention, the range hood activation logic is used to determine whether the detected particulate matter concentration change trend meets the particulate matter concentration change trend requirement corresponding to the activation of the range hood, so as to determine whether to activate the range hood. If the particulate matter concentration meets the range hood activation logic within a preset running time, the range hood is controlled to enter the running state, and the fan is started to perform smoke extraction operation.

[0032] In one embodiment, the preset running time includes a first running time and a second running time. During the operation of the first sensor, the first sensor is controlled to run for the first running time. Based on the particulate matter concentration detected within the first running time, it is determined whether to control the first sensor to continue running or whether to turn on the smoke hood.

[0033] Specifically, the range hood's start-up logic includes: determining the concentration change trend corresponding to the first running time based on the detected particulate matter concentration within the first running time. The concentration change trend corresponding to the first running time is used to characterize the change trend of the detected particulate matter concentration within the first running time. Based on different concentration change trends corresponding to the first running time, it can be divided into the following three cases: Scenario 1: If the concentration change trend corresponding to the first running time is an upward trend, then the range hood is controlled to enter the operating state. Here, the upward trend indicates that the detected particulate matter concentration rises rapidly within the first running time. If the concentration change trend corresponding to the first running time is an upward trend, it means that the particulate matter content in the environment is rising rapidly, which can be considered as a large amount of cooking fumes being generated in the environment. Since the user is currently cooking, the range hood is controlled to start operating.

[0034] The second scenario: If the concentration change trend corresponding to the first running time is a second upward trend, then the first sensor is controlled to continue running for the second running time. Here, the second upward trend indicates that the detected particulate matter concentration is rising slowly within the first running time, and the rate of increase corresponding to the first upward trend is greater than the rate of increase corresponding to the second upward trend. If the concentration change trend corresponding to the first running time is a second upward trend, it indicates that the particulate matter concentration in the environment is rising slowly. This could be due to the slow diffusion of cooking fumes at the beginning of cooking, or it could be due to poor ambient air quality. Therefore, the first sensor is controlled to continue running for the second running time to further determine the specific cause of the increase in particulate matter concentration. This avoids directly controlling the range hood to start operating when an increase in particulate matter concentration is detected, which could lead to false triggering of the range hood. It also avoids directly controlling the first sensor to shut down when an increase in particulate matter concentration is detected, which would prevent timely identification of the upward trend in particulate matter concentration and cause the range hood to miss its start-up opportunity, thereby improving the reliability of the range hood's automatic start-up function.

[0035] The third scenario: If the concentration change trend corresponding to the first running time is not upward, then the first sensor is controlled to shut down for a preset shutdown time. Here, "no upward trend" indicates that the detected particulate matter concentration remains unchanged or shows a downward trend within the first running time. If the concentration change trend corresponding to the first running time is not upward, it indicates that the user is not cooking at this time. Therefore, the first sensor is controlled to shut down for a preset shutdown time to extend the lifespan of the first sensor.

[0036] In one specific embodiment, the first upward trend is defined as follows: the difference between the particulate matter concentration and the particulate matter concentration benchmark value is greater than a first preset difference, and the rate of change of the particulate matter concentration is greater than a first rate of change; the second upward trend is defined as follows: the particulate matter concentration is greater than the particulate matter concentration benchmark value, and the rate of change of the particulate matter concentration is greater than a second rate of change. The particulate matter concentration benchmark value is used to characterize the particulate matter concentration under the current environmental background, i.e., the particulate matter concentration corresponding to the current air quality, and the first rate of change is greater than the second rate of change.

[0037] In one specific embodiment, the first preset difference is 50 ug / m³, the first rate of change is a set value greater than zero, and the second rate of change is zero.

[0038] In one embodiment, under the second scenario described above, after controlling the first sensor to continue operating for a second operating period, the concentration change trend corresponding to the second operating period is determined based on the particulate matter concentration detected during that period. This trend is then used to further determine the cause of the increased particulate matter concentration, thereby determining whether to control the range hood to start. Specifically, if the concentration change trend corresponding to the second operating period is a third upward trend, the range hood is controlled to enter operating mode; if the concentration change trend corresponding to the second operating period is not a third upward trend, the first sensor is controlled to shut down for a preset shutdown time. The third upward trend is defined as follows: the difference between the particulate matter concentration and the particulate matter concentration benchmark value is greater than a second preset difference, and the rate of change of the particulate matter concentration is greater than a third rate of change.

[0039] In a specific embodiment, the first upward trend and the third upward trend can adopt the same judgment criteria, that is, the second preset difference is 50ug / m³, and the third rate of change is equal to the first rate of change, both of which are set to a value greater than zero.

[0040] In one specific embodiment, the duration of the first running time and the duration of the preset time can be equal. In this case, the first upward trend corresponding to the first running time is the same as the third upward trend corresponding to the second running time.

[0041] In one embodiment, after the smoke hood enters standby mode, the first sensor is controlled to run for a third running period, and the average value of the particulate matter concentration detected within the first three running periods is used as the particulate matter concentration benchmark value.

[0042] In one embodiment, if the concentration change trend corresponding to the first running time is a second upward trend, the particulate matter concentration baseline value is updated based on the particulate matter concentration detected within the first running time. Specifically, the average value of the particulate matter concentration detected within the first running time is used as the new particulate matter concentration baseline value to update the particulate matter concentration baseline value.

[0043] In one embodiment, if the concentration change trend corresponding to the second running time is not the third upward trend, the particulate matter concentration baseline value is updated based on the particulate matter concentration detected during the second running time. Specifically, the average value of the particulate matter concentration detected during the second running time is used as the new particulate matter concentration baseline value to update the particulate matter concentration baseline value.

[0044] In one embodiment, to improve the accuracy of the range hood's speed adjustment, after the range hood enters the operating state, the present invention further includes steps related to adjusting the range hood's airflow. Specifically, Figure 2 This is a schematic diagram of the process for adjusting the air volume of a range hood in an embodiment of the present invention. Figure 2As shown, after the range hood enters the operating state, the following steps may also be included: Step S201: Control the second sensor to detect the real-time smoke concentration of the current environment.

[0045] In this embodiment of the invention, after the range hood enters the operating state, a second sensor is controlled to operate to detect the real-time smoke concentration of the current environment, thereby detecting the current oil fume condition of the environment. The second sensor can be an oil fume sensor, which operates continuously while the range hood is running.

[0046] Step S202: Determine and adjust the airflow of the smoke hood based on the real-time smoke concentration.

[0047] In this embodiment of the invention, the air volume of the range hood is determined and adjusted based on the real-time smoke concentration detected by the second sensor. The determination and adjustment of the air volume of the range hood can be achieved by determining and adjusting the fan speed of the range hood.

[0048] In one embodiment, a pre-established correspondence between smoke concentration and range hood airflow is constructed, that is, a correspondence between smoke concentration and range hood fan speed. Based on this correspondence, the range hood airflow is determined and adjusted. Specifically, when determining and adjusting the range hood airflow, a baseline value for the range hood airflow corresponding to the real-time smoke concentration is determined based on the pre-established correspondence between smoke concentration and range hood airflow. This baseline value is then corrected based on the rate of change of the real-time smoke concentration over a pre-established time period to obtain the range hood airflow. This correction is made based on the baseline value for the range hood airflow determined by the pre-established correspondence, thereby achieving rapid adjustment of the range hood airflow while ensuring the accuracy of the airflow adjustment. The rate of change of the real-time smoke concentration over the pre-established time period refers to the rate of change of the smoke concentration over the pre-established time period preceding the current moment when the real-time smoke concentration is detected.

[0049] In one embodiment, the baseline value of the range hood's airflow is corrected based on the different rates of change of real-time smoke concentration within a preset time period. Several scenarios exist: In the first scenario, if the rate of change of smoke concentration within a preset time period is greater than the fourth rate of change, the range hood airflow base value is increased by a correction value to obtain the range hood airflow. The fourth rate of change is a positive value. If the rate of change of smoke concentration within the preset time period is greater than the fourth rate of change, it indicates that the smoke concentration is rising rapidly. Therefore, the range hood airflow correction value can be increased based on the base value to quickly increase the airflow, thus promptly following changes in smoke concentration and absorbing smoke in a timely manner, preventing smoke leakage.

[0050] In the second scenario, if the rate of change of smoke concentration within a preset time period is less than the fifth rate of change, the range hood airflow base value is reduced by the range hood airflow correction value to obtain the range hood airflow. Here, the fifth rate of change is a value less than zero. If the rate of change of smoke concentration within the preset time period is less than the fifth rate of change, it indicates that the smoke concentration is decreasing rapidly. Therefore, the range hood airflow correction value can be reduced from the range hood airflow base value to quickly decrease the range hood airflow, thus promptly following changes in oil fume concentration and ensuring the accuracy of range hood airflow adjustment.

[0051] In one embodiment, when correcting the baseline value of the range hood air volume, if the corrected range hood air volume reaches a threshold value, such as the maximum or minimum air volume setting, then the threshold value is taken as the final range hood air volume.

[0052] In one embodiment, after the range hood is put into operation, the first sensor remains operational to continue detecting particulate matter concentration, thereby determining when to shut down the range hood. Specifically, if the difference between the particulate matter concentration benchmark value and the detected particulate matter concentration is greater than a third preset difference, and the smoke concentration is less than a smoke concentration threshold, the range hood is put into standby mode. In the correspondence between smoke concentration and range hood airflow, the smoke concentration threshold corresponds to the minimum value of the range hood airflow. Simultaneously, based on the detected particulate matter concentration, the particulate matter concentration benchmark value is updated in real time.

[0053] In one specific embodiment, the third preset difference can be 10ug / m³.

[0054] The range hood control method provided in this invention controls a first sensor for detecting particulate matter concentration to operate intermittently when the range hood is in standby mode, thereby reducing the operating time of the first sensor and improving its service life. Simultaneously, based on the particulate matter concentration detected by the first sensor during operation, it determines whether the range hood's start-up logic is met, controlling whether the range hood enters the operating state, ensuring the reliability of the range hood start-up control and avoiding false triggering of the range hood start-up. This ensures that the first sensor can reliably detect particulate matter concentration and control the range hood start-up based on the detected particulate matter concentration during range hood use, thus guaranteeing the normal operation of the range hood's automatic start-up function.

[0055] According to an embodiment of the present invention, in another aspect, a range hood is also provided, including a controller for executing the range hood control method described in any embodiment.

[0056] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0057] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A method for controlling a smoke hood, characterized in that, The method includes: When the range hood is in standby mode, the first sensor is controlled to run intermittently based on a preset off time and a preset running time. The first sensor is used to detect the concentration of particulate matter in the current environment in real time during operation. If the particulate matter concentration meets the smoke hood activation logic within the preset operating time, the smoke hood will be controlled to enter the operating state.

2. The method according to claim 1, characterized in that, The preset runtime includes a first runtime and a second runtime; the range hood activation logic includes: Based on the particulate matter concentration detected during the first running time, determine the concentration change trend corresponding to the first running time; If the concentration change trend corresponding to the first running time is an upward trend, then the smoke machine is controlled to enter the running state; If the concentration change trend corresponding to the first running time is a second upward trend, then the first sensor is controlled to continue running for the second running time, wherein the rate of increase corresponding to the first upward trend is greater than the rate of increase corresponding to the second upward trend. If the concentration change trend corresponding to the first running time is not upward, then control the first sensor to turn off for the preset off time.

3. The method according to claim 2, characterized in that, The first upward trend is defined as follows: the difference between the particulate matter concentration and the particulate matter concentration benchmark value is greater than a first preset difference, and the rate of change of the particulate matter concentration is greater than a first rate of change. The second upward trend is defined as follows: the particulate matter concentration is greater than the particulate matter concentration benchmark value, and the rate of change of the particulate matter concentration is greater than the second rate of change. Wherein, the first rate of change is greater than the second rate of change.

4. The method according to claim 2, characterized in that, After controlling the first sensor to continue operating for the second running time, the method further includes: Based on the particulate matter concentration detected during the second running time, determine the concentration change trend corresponding to the second running time; If the concentration change trend corresponding to the second running time is a third upward trend, then the smoke machine is controlled to enter the running state; If the concentration change trend corresponding to the second running time is not the third upward trend, then control the first sensor to turn off the preset off time.

5. The method according to claim 4, characterized in that, The third upward trend is defined as follows: the difference between the particulate matter concentration and the particulate matter concentration benchmark value is greater than the second preset difference, and the rate of change of the particulate matter concentration is greater than the third rate of change.

6. The method according to claim 2, characterized in that, The method further includes: If the concentration change trend corresponding to the first running time is the second upward trend, then the particulate matter concentration baseline value is updated based on the particulate matter concentration detected within the first running time.

7. The method according to claim 4, characterized in that, The method further includes: If the concentration change trend corresponding to the second running time is not the third upward trend, then the particulate matter concentration baseline value is updated based on the particulate matter concentration detected within the second running time.

8. The method according to claim 1, characterized in that, After the control of the smoke hood to enter the operating state is completed, the method further includes: Control the second sensor to detect the real-time smoke concentration in the current environment; Based on the real-time smoke concentration, the airflow of the smoke hood is determined and adjusted.

9. The method according to claim 8, characterized in that, The step of determining and adjusting the airflow of the smoke hood based on the real-time smoke concentration includes: Based on the preset correspondence between smoke concentration and range hood airflow, a baseline value for range hood airflow corresponding to the real-time smoke concentration is determined. Based on the rate of change of the real-time smoke concentration within a preset time period, the baseline value of the range hood air volume is corrected to obtain the range hood air volume.

10. The method according to claim 9, characterized in that, The step of correcting the baseline value of the range hood airflow based on the rate of change of the real-time smoke concentration within a preset time period to obtain the range hood airflow includes: If the rate of change of the smoke concentration within the preset time period is greater than the fourth rate of change, the smoke hood air volume base value is increased by the smoke hood air volume correction value to obtain the smoke hood air volume; If the rate of change of the smoke concentration within the preset time period is less than the fifth rate of change, the smoke hood airflow reference value is reduced by the smoke hood airflow correction value to obtain the smoke hood airflow.

11. The method according to any one of claims 1-10, characterized in that, After the control of the smoke hood to enter the operating state is completed, the method further includes: If the difference between the particulate matter concentration benchmark value and the detected particulate matter concentration is greater than a third preset difference value, and the smoke concentration is less than the smoke concentration threshold, the smoke hood is controlled to enter standby mode. The particulate matter concentration baseline value is updated based on the detected particulate matter concentration.

12. A range hood, characterized in that, Includes a controller for performing the smoke hood control method according to any one of claims 1-11.

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