A method for interaction between range hood and stove

Abstract

This invention discloses a method for interaction between a stove and a range hood. S1: The exhaust fan starts and operates at power P; S2: A height detection module detects the cookware status; if S21: A temperature detection module detects the burner temperature and calculates the rate of temperature change over time to determine the current burner status, thereby controlling the burner and exhaust fan; if S22: A temperature detection module detects the pot lid temperature and calculates the rate of temperature change over time to determine the current burner status, thereby controlling the burner and exhaust fan; if S23: A smoke detection module detects the smoke concentration and adjusts the exhaust fan power based on the smoke concentration, while the temperature detection module detects the cookware temperature and calculates the rate of temperature change over time, and the control module controls the switching valve based on the cookware temperature and the rate of temperature change; if S24: The control module adjusts the exhaust fan power to Pn based on its current power, and after the pot lid is opened, the control module adjusts the exhaust fan power to Pm based on the smoke concentration detected by the smoke detection module.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and more specifically, to a method for interaction between the range hood and the cooktop. Background Technology

[0002] During cooking, the concentration of smoke is highest the moment the pot lid is opened, and this is also the process when fumes easily escape. At this time, it's necessary to increase the power of the range hood's exhaust fan to enhance its smoke extraction capacity, allowing the fumes generated when the lid is lifted to be quickly expelled, effectively preventing escape. However, during cooking, users cannot always increase the range hood's exhaust fan speed before each lid opening. Therefore, fumes easily escape during cooking, polluting the air in the cooking environment and affecting the user's health. Summary of the Invention

[0003] The purpose of this invention is to provide a method for interaction between the range hood and the cooktop, which solves the problems mentioned in the background art.

[0004] This invention is implemented as follows: a method for interaction between a range hood and a cooktop, wherein the range hood has a control module, a height detection module, a temperature detection module, a smoke detection module, a wireless communication module, and an exhaust fan; the cooktop has a switch valve; the temperature detection module detects the temperature of the cookware or the burner of the cooktop and / or the rate of temperature change over time and sends it to the control module; the control module controls the switch valve through the wireless communication module based on the temperature and / or the rate of temperature change detected by the temperature detection module, thereby realizing interaction between the range hood and the cooktop; the interaction method includes:

[0005] S1: The exhaust fan starts and runs at power P;

[0006] S2: Height detection module detects the cookware status.

[0007] If S21: The pot is not placed on the stove, the temperature detection module detects the burner temperature and calculates the rate of temperature change over time to determine the current state of the burner. The control module controls the burner and exhaust fan according to the current state of the burner.

[0008] If S22: The pot is placed on the stove and covered with a lid, the temperature detection module detects the temperature of the lid and calculates the rate of temperature change over time to determine the current state of the burner. The control module controls the burner and exhaust fan according to the current state of the burner.

[0009] If S23: The pot is placed on the stove without a lid, the smoke detection module detects the smoke concentration and adjusts the power of the exhaust fan according to the smoke concentration. At the same time, the temperature detection module detects the pot temperature and calculates the rate of temperature change over time. The control module controls the on / off valve according to the pot temperature and the rate of temperature change.

[0010] If S24: The pot is placed on the stove and the pot lid is in the process of being removed from the pot, the control module adjusts the power of the exhaust fan to Pn according to the existing power of the exhaust fan, and after the pot lid is opened, the control module adjusts the power of the exhaust fan to Pm according to the smoke concentration detected by the smoke detection module.

[0011] Furthermore, if S21: the pot is not placed on the stove, the temperature detection module detects the burner temperature and calculates the rate of temperature change over time to determine the current state of the burner. The control module controls the burner and exhaust fan according to the current state of the burner as follows:

[0012] If the temperature detection module detects the temperature C of the stove in real time and calculates the rate of change of the temperature C over time ΔC, and obtains that C > 0℃ and ΔC < 0, then the exhaust fan will be turned off after running at its current power for a time t1.

[0013] If the temperature detection module detects the temperature C of the stove in real time and calculates the rate of change of temperature C over time ΔC, and obtains that C > 0℃ and ΔC > 0, then after waiting for 10S < T ≤ 45S, if it is still S21, the exhaust fan will be turned off and the switch valve will be closed.

[0014] Furthermore, if S22: the pot is placed on the stove and covered with a lid, the temperature detection module detects the temperature of the lid and calculates the rate of temperature change over time to determine the current state of the burner. The control module controls the burner and exhaust fan according to the current state of the burner as follows:

[0015] If the temperature detection module detects the temperature C of the pot lid in real time and calculates the rate of change of the temperature C over time ΔC, and finds that C ≤ 50℃ and ΔC < 0, and the duration is greater than t2, then the exhaust fan will be turned off.

[0016] If the temperature detection module detects the temperature C of the pot lid in real time and calculates the rate of change of the temperature C over time ΔC, and finds that C > 50℃, ΔC < 0, and the duration is greater than t3, then the exhaust fan will continue to run at its current power until C ≤ 50℃ and then shut down.

[0017] If the temperature detection module detects the temperature C of the pot lid in real time and calculates the rate of change of the temperature C over time ΔC, and obtains that C > 0℃ and ΔC > 0, then the exhaust fan will maintain its current power operation.

[0018] Furthermore, if S23: the cookware is placed on the stove without a lid, the smoke detection module detects the smoke concentration and adjusts the power of the exhaust fan according to the smoke concentration. At the same time, the temperature detection module detects the cookware temperature and calculates the rate of temperature change over time. According to the method of controlling the burner based on the cookware temperature and the rate of temperature change, if the temperature detection module detects that the cookware temperature C≥Cmax and ΔC>0, the control module issues a cookware dry burning warning and closes the switch valve.

[0019] Furthermore, if S24: the pot is placed on the stove and the lid is in the process of being removed from the pot, the control module adjusts the power of the exhaust fan to Pn according to the existing power of the exhaust fan as follows:

[0020] If P = Pmin, the control module will increase the power of the exhaust fan to P1;

[0021] If P = P1, the control module will increase the power of the exhaust fan to P2;

[0022] If P≥P2, the control module keeps the exhaust fan running at its current power, where Pmin<P1<P2≤Pmax.

[0023] Furthermore, if S24: the pot is placed on the stove and the lid is in the process of being removed from the pot, the control module adjusts the power of the exhaust fan to Pn according to the existing power of the exhaust fan as follows:

[0024] If P < Pmax, the control module will increase the power of the exhaust fan to Pmax;

[0025] If P = Pmax, the control module keeps the exhaust fan running at its current power.

[0026] Furthermore, in S24, after the pot lid is opened, the control module adjusts the power of the exhaust fan to Pm based on the smoke concentration detected by the smoke detection module as follows:

[0027] If the smoke concentration C detected by the smoke detection module is less than or equal to C1, the exhaust fan will continue to operate at its current power Pn.

[0028] If the smoke concentration detected by the smoke detection module is C1 < C ≤ C2, and Pn = P1, the control module will adjust the power of the exhaust fan to P2;

[0029] If the smoke concentration detected by the smoke detection module is C1<C≤C2 and Pn≥P2, the control module keeps the exhaust fan running at its current power.

[0030] If the smoke concentration C detected by the smoke detection module is greater than C2 and Pn is less than Pmax, the control module will adjust the power of the exhaust fan to Pmax.

[0031] If the smoke concentration C detected by the smoke detection module is greater than C2 and Pn = Pmax, the control module keeps the exhaust fan running at its current power Pn.

[0032] P1 < P2 < Pmax.

[0033] Furthermore, if the smoke concentration C detected by the smoke detection module is less than or equal to C1, the exhaust fan will operate at power Pn.

[0034] When Pn = P1, the control module keeps the exhaust fan running at its current power Pn.

[0035] When Pn > P1, the control module keeps the exhaust fan running at its current power for t4, and then reduces the power of the exhaust fan to P1.

[0036] Furthermore, during the cooking process, the control module records the Pm value after the first transition from S24 to S23. Within the same cooking cycle, if the height detection module detects the transition from S22 to S24 again, it directly adjusts the power of the exhaust fan to Pm.

[0037] Furthermore, in step S2, the method for the height detection module to detect the status of the cookware is as follows: the threshold values ​​of the height detection module are set to h1, h2, h3, h4 and h5, respectively, where h1 > h2 > h3 > h4 > h5;

[0038] When the height value h detected by the height detection module satisfies: h = h1, the cookware is not placed on the stove.

[0039] When the height value h detected by the height detection module satisfies: h3≤h≤h2, the pot is placed on the stove and the lid is not on the pot.

[0040] When the height value h detected by the height detection module satisfies: h5<h≤h4, the pot is placed on the stove and covered with a lid.

[0041] When the height value h detected by the height detection module satisfies: h≤h5, the pot lid is in the process of moving from being placed on the pot to being removed from the pot.

[0042] Compared with existing technologies, the stove-range ventilation method provided by this invention can not only detect whether the pot lid is open, but also automatically adjust the operating power of the exhaust fan based on the detection results of the smoke detection module and the set control program at the moment the lid is opened. This allows for the rapid removal of oil fumes generated when the lid is opened, effectively preventing the escape of oil fumes caused by the lid being open, improving the user experience and protecting the user's health. Other advantages of this invention are described in the following description. Attached Figure Description

[0043] Figure 1 This is a block diagram of the electrical control structure of the range hood and stove in an embodiment of the present invention;

[0044] Figure 2 This is a flowchart of the stove-range ventilation interaction method described in an embodiment of the present invention;

[0045] Figure 3 This is a flowchart of the method for adjusting the smoke exhaust fan when S24 is described in an embodiment of the present invention. Detailed Implementation

[0046] The following drawings disclose several embodiments of the present invention. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0047] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0048] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed by this invention.

[0049] To further understand the content, features, and effects of this invention, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0050] Example 1

[0051] This embodiment provides a range hood and a cooktop, such as Figure 1As shown, the range hood includes a control module, a height detection module, a temperature detection module, a smoke detection module, a wireless communication module, and an exhaust fan. The control module includes the main control board and an MCU chip mounted on it. Two height and two temperature detection modules are positioned on each side, aligned with the two burners of the cooktop. The height detection module uses an ultrasonic ranging sensor, and the temperature detection module uses an infrared temperature sensor. The smoke detection module uses a smoke sensor to detect the concentration of cooking fumes. The wireless communication module includes a Bluetooth chip. The cooktop has a wireless communication module and a switch valve. The cooktop wireless communication module uses a Bluetooth chip and can communicate with the range hood wireless communication module via Bluetooth signals.

[0052] The height detection module is used to detect the status of the cookware and send the status to the control module. The temperature detection module is used to detect the temperature of the cookware or the burner of the stove and / or the rate of temperature change over time, and send the detection data to the control module. The control module controls the switch valve through the wireless communication module based on the cookware status monitored by the height detection module and the temperature and / or the rate of temperature change detected by the temperature detection module, so as to realize the interaction between the range hood and the stove.

[0053] In addition, the control module also controls the operating power of the exhaust fan based on the temperature and / or temperature change rate detected by the temperature detection module and the oil fume concentration monitored by the smoke detection module.

[0054] The height detection module detects four states of the cookware: S21, S22, S23, and S24. S21 indicates that the cookware is not placed on the stove; S22 indicates that the cookware is placed on the stove and covered with a lid; S23 indicates that the cookware is placed on the stove and not covered with a lid; and S24 indicates that the cookware is placed on the stove and the lid is in the process of being removed from the cookware.

[0055] The height detection module detects the cookware status as follows: Threshold values ​​for the height detection module are set as h1, h2, h3, h4, and h5, where h1 > h2 > h3 > h4 > h5. When the height value h detected by the height detection module satisfies h = h1, the cookware is not placed on the stove, which is step S21. When the height value h detected by the height detection module satisfies h3 ≤ h ≤ h2, the cookware is placed on the stove without a lid, which is step S23. Note that the detection of cookware status may differ for flat-bottomed and round-bottomed pans. When the height value h detected by the height detection module satisfies h5 < h ≤ h4, the cookware is placed on the stove with a lid, which is step S22. When the height value h detected by the height detection module satisfies h ≤ h5, the lid is in the process of being removed from the cookware, which is step S24.

[0056] In some exemplary embodiments, the range hood wireless communication module includes not only a Bluetooth chip but also a WiFi chip. The WiFi chip can be used to communicate with a server, transmitting data from the range hood and cooktop to the server. The range hood wireless communication module can connect to a range hood control app installed on a smartphone or control terminal via Bluetooth or WiFi signals. Through the range hood control app, users can view various technical parameters of the range hood and set and modify h1, h2, h3, h4, and h5 parameters.

[0057] In some exemplary embodiments, the cooktop also includes a cooktop control module, with the cooktop wireless communication module and the switch valve both electrically connected to the cooktop control module. The range hood control module communicates with the cooktop control module through the range hood wireless communication module and the cooktop wireless communication module.

[0058] In some exemplary embodiments, the range hood also includes an alarm module electrically connected to the range hood's control module. Alternatively, the range hood's control module may have an alarm unit. The alarm module and alarm unit can be used for fault alarms in the range hood and cooktop, as well as for dry-burning alarms in the cooktop. The alarm module and alarm unit can be audible alarm modules, such as horns. The alarm module can also be an audible and visual alarm module, including a horn installed inside the range hood housing and an alarm light on the range hood's control panel.

[0059] Example 2

[0060] This embodiment provides a method for interaction between the range hood and the cooktop. This method is used with the range hood and cooktop provided in Embodiment 1, such as... Figure 2 As shown, the method for interaction between the range hood and the stove includes the following steps:

[0061] S1: The exhaust fan starts and runs at power P.

[0062] S2: The height detection module detects the status of the cookware. There are four possible cookware statuses: S21, S22, S23, and S24. S21 indicates that the cookware is not placed on the stove. S22 indicates that the cookware is placed on the stove and covered with a lid. S23 indicates that the cookware is placed on the stove and uncovered. S24 indicates that the cookware is placed on the stove and the lid is in the process of being removed from the cookware.

[0063] S21: The temperature detection module detects the burner head temperature and calculates the rate of temperature change over time to determine the current state of the burner head. The smoke exhaust fan control module controls the burner head and the exhaust fan based on the current state of the burner head. The specific method is as follows:

[0064] If the temperature detection module detects the temperature C of the stove in real time and calculates the rate of change of temperature C over time ΔC, and the result is: C > 0℃, ΔC < 0, then the exhaust fan will maintain its current power operation for a time t1 before shutting off. For example, a delayed shutdown after the stove is turned off falls into this category. t1 can be preset by the manufacturer or a recommended time range can be provided by the manufacturer, and the user can choose the recommended time range, which can be 30S-60S.

[0065] If the temperature detection module monitors the stove's temperature C in real time and calculates the rate of change of C over time ΔC, and finds that C > 0℃ and ΔC > 0, then after waiting 10S < T ≤ 45S, if the temperature remains below 21℃, the exhaust fan will be turned off, and the valve will be closed. This applies to situations where a pot has been moved away from the stove for a period of time before being placed back on it. To prevent the stove from continuously burning, the exhaust fan and stove will both be turned off, resulting in greater energy savings.

[0066] S22: The temperature detection module detects the pot lid temperature and calculates the rate of temperature change over time to determine the current state of the burner. The control module controls the burner and exhaust fan based on the current burner state. The specific method is as follows:

[0067] If the temperature detection module monitors the pot lid's temperature C in real time and calculates the rate of change of temperature C over time ΔC, and finds that C ≤ 50℃ and ΔC < 0, and the duration is greater than t2, then the exhaust fan will shut off. This includes the state after a delayed shutdown following the initial heat is turned off. t2 can be preset by the manufacturer, or the manufacturer can provide a recommended time range for the user to choose from. t2 can be the same as or different from t1.

[0068] If the temperature detection module monitors the pot lid's temperature C in real time and calculates the rate of change of temperature C over time ΔC, and finds that C > 50℃, ΔC < 0, and the duration is greater than t3, then the exhaust fan will maintain its current power until C ≤ 50℃ and then shut down. T3 can be preset by the manufacturer, or the manufacturer can provide a recommended time range, which the user can select themselves. T3 can be the same as or different from t1 and t2.

[0069] If the temperature detection module detects the temperature C of the pot lid in real time and calculates the rate of change of temperature C over time ΔC, and obtains that C > 0℃ and ΔC > 0, then the exhaust fan will maintain its current power operation. This is the case when cooking is in progress.

[0070] S23: The smoke detection module detects the smoke concentration and adjusts the power of the exhaust fan accordingly. Simultaneously, the temperature detection module detects the cookware temperature and calculates the rate of temperature change over time. The control module controls the switching valve based on the cookware temperature and the rate of temperature change. If the temperature detection module detects a cookware temperature C ≥ Cmax and ΔC > 0, the control module controls the alarm module or its alarm unit to issue a cookware dry-burning warning signal and closes the switching valve.

[0071] S24: The control module adjusts the power of the exhaust fan to Pn based on the existing power of the exhaust fan, and after the pot lid is opened, the control module adjusts the power of the exhaust fan to Pm based on the smoke concentration detected by the smoke detection module.

[0072] In some exemplary embodiments, the control module of the smoke exhaust fan is preset with a first power threshold P1 and a second power threshold P2, where Pmin < P1 < P2 ≤ Pmax. For example... Figure 3 As shown, the control module adjusts the power of the smoke exhaust fan to Pn based on the existing power of the smoke exhaust fan as follows:

[0073] If P = Pmin, the control module will increase the power of the exhaust fan to P1.

[0074] If P = P1, the control module will increase the power of the exhaust fan to P2.

[0075] If P ≥ P2, the control module maintains the current power output of the exhaust fan or increases its power to Pmax. In other words, before the exhaust fan's power reaches P2, the power is increased incrementally, one level at a time. When the exhaust fan's power equals P2 and P2 < Pmax, and an increase in power is needed, the exhaust fan is directly increased to Pmax. When the exhaust fan's power equals P2 and P2 = Pmax, the exhaust fan maintains its current power output.

[0076] In some exemplary embodiments, the control module adjusts the power of the smoke exhaust fan to Pn based on the existing power of the smoke exhaust fan as follows:

[0077] If P < Pmax, the control module will increase the power of the exhaust fan to Pmax.

[0078] If P = Pmax, the control module keeps the exhaust fan running at its current power. This method applies when both burners are used simultaneously. In other words, whenever it's necessary to increase the exhaust fan's power, if the exhaust fan's power is not equal to Pmax, the power is directly increased to Pmax; if the exhaust fan's power equals Pmax, it continues to run at its current power.

[0079] In some exemplary embodiments, the method by which the control module of the smoke hood adjusts the power of the exhaust fan to Pm based on the smoke concentration detected by the smoke detection module is as follows:

[0080] If the smoke concentration detected by the smoke detection module is C1 < C ≤ C2, and Pn = P1, the control module adjusts the power of the exhaust fan to P2. When the smoke concentration C < C1, the oil fume concentration is relatively small, and the exhaust fan can meet the requirement of sucking up the oil fume by running at a low power of P1. When the smoke concentration C1 < C ≤ C2, P1 is no longer sufficient to suck up the smoke in time. At this time, the power of the exhaust fan needs to be increased to P2 in order to suck up and discharge the oil fume in time.

[0081] If the smoke concentration detected by the smoke detection module is C1 < C ≤ C2, and Pn ≥ P2, the control module keeps the exhaust fan running at its current power. When the smoke concentration is C1 < C ≤ C2, the exhaust fan operates at power P2 to promptly extract and discharge the fumes. If, at this smoke concentration, the exhaust fan's power Pn ≥ P2, the exhaust fan continues to operate at its current power. This state may occur after the pot lid is open and the smoke has stabilized. At the moment the pot lid is opened, the smoke concentration causes the exhaust fan's power to increase to Pn ≥ P2. After the smoke stabilizes and C1 < C ≤ C2, the exhaust fan will continue to operate at this power.

[0082] If the smoke detection module detects a smoke concentration C > C2 and Pn < Pmax, the control module adjusts the power of the exhaust fan to Pmax. When the smoke concentration C > C2, the oil fume concentration is relatively high. In this case, if the operating power of the exhaust fan Pn < Pmax, the control module adjusts the power of the exhaust fan to Pmax, so that the exhaust fan can promptly draw in and expel the oil fume to ensure the air quality of the user's cooking environment.

[0083] If the smoke concentration C detected by the smoke detection module is greater than C2 and Pn = Pmax, the control module keeps the exhaust fan running at its current power Pn, that is, at its maximum power Pmax.

[0084] Different smoke concentrations correspond to different exhaust fan power, which can effectively extract oil fumes and avoid wasting the exhaust fan's power.

[0085] If the smoke concentration C detected by the smoke detection module is less than or equal to C1, the exhaust fan will operate at power Pn.

[0086] When Pn = P1, the control module keeps the exhaust fan running at its current power Pn. When the smoke concentration C ≤ C1, the oil fume concentration is relatively low, and the exhaust fan can effectively draw in and discharge the oil fume by running at P1. If Pn is too high, the exhaust fan's power will be wasted.

[0087] When Pn > P1, the control module keeps the exhaust fan running at its current power for t4, then reduces the exhaust fan's power to P1. At the moment the pot lid is opened, the smoke concentration causes the exhaust fan's power to increase to Pn > P1. After the smoke stabilizes and C ≤ C1, the exhaust fan continues to run at power Pn for t4. Once the smoke concentration stabilizes and C ≤ C1, the exhaust fan's power is reduced to P1, thus avoiding wasting its power.

[0088] In some exemplary embodiments, the range hood control module records the Pm value after the first transition from S24 to S23. Within the same cooking cycle, if the height detection module detects another transition from S22 to S24, it directly adjusts the power of the exhaust fan to Pm. The same cooking cycle refers to the process of cooking the same ingredient, where the state of oil fume generation is similar each time the lid is lifted. The previous exhaust fan power Pm value can be directly recorded, and the previously recorded Pm value can be used in the next operation. This not only simplifies the control steps but also helps prevent oil fume escape.

[0089] In summary, the stove-and-fume interaction method provided by this invention can not only detect whether the pot lid is open, but also automatically adjust the operating power of the exhaust fan based on the detection results of the smoke detection module and the set control program at the moment the pot lid is opened. This can quickly exhaust the oil fumes generated at the moment the pot lid is opened, effectively preventing the problem of oil fume escape caused by the pot lid being opened, improving the user experience and protecting the user's health.

[0090] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for smoke stove interaction, the method comprising: The smoke machine has a control module, a height detection module, a temperature detection module, a smoke detection module, a wireless communication module and a smoke exhaust fan, and the cooktop has a switch valve, the temperature detection module detects the temperature of the pot or the burner of the cooktop and / or the temperature change rate over time and sends it to the control module, the control module controls the switch valve through the wireless communication module according to the temperature or / and temperature change rate detected by the temperature detection module, to realize the interaction between the smoke machine and the cooktop, and the interaction method comprises: ​ S1: the smoke exhaust fan starts and runs at a power P; S2: the height detection module detects the state of the pot: If S21: the pot is not placed on the cooktop, the temperature detection module detects the temperature of the burner and calculates the temperature change rate over time to determine the current state of the burner, and the control module controls the burner and the smoke exhaust fan according to the current state of the burner; If S22: the pot is placed on the cooktop and covered with a pot cover, the temperature detection module detects the temperature of the pot cover and calculates the temperature change rate over time to determine the current state of the burner, and the control module controls the burner and the smoke exhaust fan according to the current state of the burner; If S23: the pot is placed on the cooktop and not covered with a pot cover, the smoke detection module detects the smoke concentration, and adjusts the power of the smoke exhaust fan according to the smoke concentration, while the temperature detection module detects the temperature of the pot and calculates the temperature change rate over time, and the control module controls the switch valve according to the temperature of the pot and the temperature change rate; If S24: the pot is placed on the cooktop and the pot cover is in the process of being covered on the pot to being moved away from the pot, the control module adjusts the power of the smoke exhaust fan to Pn according to the existing power of the smoke exhaust fan, and the method is: If P=Pmin, the control module increases the power of the smoke exhaust fan to P1; If P=P1, the control module increases the power of the smoke exhaust fan to P2; If P≥P2, the control module keeps the smoke exhaust fan running at the existing power, wherein Pmin Or If P If P=Pmax, the control module keeps the smoke exhaust fan running at the existing power; After the pot cover is opened, the control module adjusts the power of the smoke exhaust fan to Pm according to the smoke concentration detected by the smoke detection module, and the method is: If the smoke concentration C detected by the smoke detection module is ≤C1, the smoke exhaust fan keeps running at the existing power Pn; If the smoke concentration C detected by the smoke detection module is C1 If the smoke concentration C detected by the smoke detection module is C1 If the smoke concentration C detected by the smoke detection module is >C2 and Pn If the smoke concentration C detected by the smoke detection module is >C2 and Pn P1 If the smoke concentration C detected by the smoke detection module is ≤C1, the smoke exhaust fan runs at a power Pn: When Pn=P1, the control module keeps the exhaust fan running at the existing power Pn; When Pn>P1, the control module keeps the exhaust fan running at the existing power for t4, and then reduces the power of the exhaust fan to P1; In the cooking process, the control module records the value of Pm after entering S23 from S24 for the first time. In the same cooking cycle, if the height detection module detects again that it enters S24 from S22, the power of the exhaust fan is directly adjusted to Pm.

2. The smoke stove interaction method of claim 1, wherein, If S21: the pot is not placed on the stove, the temperature detection module detects the temperature of the stove head and calculates the rate of change of the temperature with time to determine the current state of the stove head. The control module controls the method of the stove head and the exhaust fan according to the current state of the stove head: If: the temperature detection module detects the temperature C of the stove in real time and calculates the rate of change of the temperature C with time, C>0℃ and ΔC<0, the exhaust fan is kept running for t1 and then turned off. If: the temperature detection module detects the temperature C of the stove in real time and calculates the rate of change of the temperature C with time, C>0℃ and ΔC>0, the exhaust fan is kept running for 10S<T≤45S. If S21 still exists, the exhaust fan is turned off and the switch valve is closed. 3.The smoke-stove interaction method of claim 1, wherein, If S22: the pot is placed on the stove and covered with a pot cover, the temperature detection module detects the temperature of the pot cover and calculates the rate of change of the temperature with time to determine the current state of the stove head. The control module controls the method of the stove head and the exhaust fan according to the current state of the stove head: If: the temperature detection module detects the temperature C of the pot cover in real time and calculates the rate of change of the temperature C with time, C≤50℃ and ΔC<0, and the duration is greater than t2, the exhaust fan is turned off. If: the temperature detection module detects the temperature C of the pot cover in real time and calculates the rate of change of the temperature C with time, C>50℃ and ΔC<0, and the duration is greater than t3, the exhaust fan is kept running at the existing power until C≤50℃ and then turned off. If: the temperature detection module detects the temperature C of the pot cover in real time and calculates the rate of change of the temperature C with time, C>0℃ and ΔC>0, the exhaust fan is kept running at the existing power. 4.The smoke-stove interaction method of claim 1, wherein, If S23: the pot is placed on the stove and not covered with a pot cover, the smoke detection module detects the smoke concentration and adjusts the power of the exhaust fan according to the smoke concentration, and the temperature detection module detects the temperature of the pot and calculates the rate of change of the temperature with time. In the method of controlling the stove head according to the temperature of the pot and the rate of change of the temperature, if the temperature detection module detects that the temperature of the pot C≥Cmax and ΔC>0, the control module issues a pot dry burning warning and closes the switch valve. 5.The smoke-stove interaction method of claim 1, wherein, In step S2, the height detection module detects the state of the pot by setting the threshold values of the height detection module as h1, h2, h3, h4 and h5, h1>h2>h3>h4>h5; When the height value h detected by the height detection module satisfies: h=h1, the pot is not placed on the stove; When the height value h detected by the height detection module satisfies: h3≤h≤h2, the pot is placed on the stove and not covered with a pot cover; When the height value h detected by the height detection module satisfies: h5 < h ≤ h4, the pot is placed on the stove and covered with a pot cover; When the height value h detected by the height detection module satisfies: h ≤ h5, the pot cover is in the process from being covered on the pot to being moved away from the pot.

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