A kind of air valve control method, air valve control device, electronic equipment and storage medium

Abstract

The application discloses a kind of air valve control method, air valve control device, electronic equipment and storage medium.The air valve control method includes: determining the working state of range hood, and working state includes open state and closed state;After range hood is adjusted from closed state to open state, first control air valve is adjusted from first angle θ1 to second angle θ2;After delaying first preset time, control air valve is adjusted from second angle θ2 to third angle θ3;Wherein, θ1≤θ2≤θ3.The above scheme can effectively reduce the amount of wind in the central flue that enters the branch flue through the air valve during the opening process of the range hood, thereby reducing the influence of the negative pressure in the central flue on the amount of wind in the branch flue.Avoiding the adaptive reduction of load current when the range hood is just turned on, the misjudgment problem of the air valve control device is improved, the normal smoke exhaust of the range hood is ensured, and the reliability of the range hood is improved.

Description

Technical Field

[0001] This invention relates to the field of kitchen exhaust equipment technology, and in particular to a method for controlling a damper, a damper control device, an electronic device, and a storage medium. Background Technology

[0002] The central range hood system uses a rooftop unit as the exhaust power source for the entire building, creating negative pressure in the central flue and the branch flues entering each household. Each household is equipped with a power distribution valve (or damper), which adjusts the suction power of the kitchen exhaust by changing its opening angle. When the airflow demanded by each household exceeds the airflow provided by the main unit, the fan frequency of the rooftop unit is adjusted to regulate the airflow. The damper controller adjusts the opening angle of the dampers based on their status within each household to achieve balanced airflow. The damper controller detects the range hood's load current to identify the operating level and thus controls the damper angle adjustment.

[0003] With the development of variable frequency technology, variable frequency range hoods have become commonplace in households. Variable frequency range hoods utilize variable frequency control technology, performing closed-loop control based on the motor's current feedback when operating at different speeds. Used in central range hood systems, variable frequency range hoods create negative pressure in the central duct when the main unit is turned on. This negative pressure improves the smoke extraction efficiency of the central duct, but it also exerts external influences on the variable frequency range hood. In actual use, this may cause the damper to close accidentally when the range hood is first turned on, affecting its normal smoke extraction. Summary of the Invention

[0004] In view of this, the present invention provides a method for controlling a damper, a device for controlling a damper, an electronic device, and a storage medium to solve the problem of damper malfunction when a central range hood system is first turned on, and to ensure the normal operation of the range hood.

[0005] In a first aspect, embodiments of the present invention provide a method for controlling a damper in a range hood system. The damper control method includes:

[0006] Determine the working status of the range hood, including the on state and the off state;

[0007] After the range hood is adjusted from the off state to the on state, the air valve is controlled to be adjusted from the first angle θ1 to the second angle θ2;

[0008] After a first preset time delay, the air valve is controlled to adjust from the second angle θ2 to the third angle θ3;

[0009] Where θ1≤θ2≤θ3.

[0010] Optionally, in a possible embodiment, after the range hood is adjusted from a closed state to an open state, controlling the air valve to adjust from a first angle θ1 to a second angle θ2 includes:

[0011] After the range hood is adjusted from the off state to the on state, the air valve is controlled to be adjusted from the first angle θ1 to the fourth angle θ4;

[0012] After a second preset time delay, the air valve is controlled to adjust from the fourth angle θ4 to the second angle θ2;

[0013] Where θ1≤θ4≤θ2.

[0014] Optionally, in a possible embodiment, after delaying the first preset time, controlling the air valve to adjust from the second angle θ2 to the third angle θ3 includes:

[0015] After a third preset time delay, the air valve is controlled to adjust from the second angle θ2 to the fifth angle θ5;

[0016] After a fourth preset time delay, the air valve is controlled to adjust from the fifth angle θ5 to the third angle θ3;

[0017] Wherein, θ2≤θ5≤θ3, and the sum of the third preset time and the fourth preset time is less than or equal to the first preset time.

[0018] Optionally, in possible embodiments, determining the operating state of the range hood includes:

[0019] Obtain the load current of the range hood;

[0020] When the load current is less than a first current threshold, the range hood is determined to be in the off state; when the load current is greater than a second current threshold, the range hood is determined to be in the on state; the first current threshold is less than the second current threshold.

[0021] After the range hood is switched from the off state to the on state, and before the air valve is adjusted from the first angle θ1 to the second angle θ2, the following steps are included:

[0022] When the load current changes from the first current threshold to the second current threshold, it is determined that the range hood is adjusted from the off state to the on state.

[0023] Optionally, in a possible embodiment, determining that the range hood is adjusted from the off state to the on state when the load current changes from the first current threshold to the second current threshold includes:

[0024] After detecting that the load current changes from the first current threshold to the second current threshold and is maintained at the second current threshold for a first duration, it is determined that the range hood is adjusted from the off state to the on state.

[0025] Optionally, in possible embodiments, the range hood system further includes a main controller;

[0026] After the range hood is switched from the off state to the on state, and after the air valve is adjusted from the first angle θ1 to the second angle θ2, the following steps are also included:

[0027] The third angle θ3 is obtained by the main controller based on the number of range hoods in the range hood system that are turned on.

[0028] Optionally, in a possible embodiment, 0.5 ≤ θ2 / θ3 ≤ 0.7.

[0029] Secondly, embodiments of the present invention also provide a damper control device for executing the damper control method provided in any embodiment of the present invention, the damper control device comprising:

[0030] The working status determination module is used to determine the working status of the range hood, which includes an on state and an off state;

[0031] The air valve control module is used to control the air valve to adjust from a first angle θ1 to a second angle θ2 after the range hood is adjusted from a closed state to an open state, and after a first preset time delay, control the air valve to adjust from the second angle θ2 to a third angle θ3.

[0032] Where θ1≤θ2≤θ3.

[0033] Thirdly, embodiments of the present invention also provide an electronic device, comprising:

[0034] One or more processors;

[0035] Storage device for storing one or more programs;

[0036] When the one or more programs are executed by the one or more processors, the one or more processors implement the air valve control method provided in any embodiment of the present invention.

[0037] Fourthly, embodiments of the present invention also provide a readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the damper control method provided in any embodiment of the present invention.

[0038] The air valve control method provided by this invention first determines the working state of the range hood, including an on state and a off state. After the range hood is adjusted from the off state to the on state, the air valve is first controlled to adjust from a first angle θ1 to a second angle θ2. After a first preset time delay, the air valve is then controlled to adjust from the second angle θ2 to a third angle θ3; wherein θ1≤θ2≤θ3. Using this scheme, the air volume entering the branch flues through the air valve in the central flue during the range hood's operation can be effectively reduced, thereby weakening the impact of the negative pressure in the central flue on the air volume in the branch flues. This avoids the adaptive reduction of load current when the range hood is first turned on, improves the misjudgment problem of the air valve control device, ensures normal smoke exhaust from the range hood, and improves the reliability of the range hood. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of a range hood system provided in an embodiment of the present invention;

[0040] Figure 2 This is a timing diagram for damper control in related technologies;

[0041] Figure 3 A flowchart of a damper control method provided in an embodiment of the present invention;

[0042] Figure 4 A timing diagram for air valve control provided in an embodiment of the present invention;

[0043] Figure 5 A flowchart of another air valve control method provided in an embodiment of the present invention;

[0044] Figure 6 for Figure 5 The control timing diagram of the damper control method shown is as follows;

[0045] Figure 7 A flowchart of another air valve control method provided in an embodiment of the present invention;

[0046] Figure 8 for Figure 7 The control timing diagram of the damper control method shown is as follows;

[0047] Figure 9 This is a control logic diagram of a damper control method provided in an embodiment of the present invention;

[0048] Figure 10 This is a schematic diagram of the structure of a damper control device provided in an embodiment of the present invention. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0050] Figure 1 This is a schematic diagram of a range hood system provided in an embodiment of the present invention, with reference to... Figure 1 The range hood system (i.e., the central range hood system) includes a main unit 1 located on the roof and terminal components 2 in each user's home. The main unit 1 includes a fan 10 and a main controller 11. The fan 10 is located at the outlet of the central flue 3, and the fan 10 can be controlled by frequency conversion via the main controller 11. The terminal components 2 include air valves 20, range hoods 21, and air valve control devices 22 (i.e., air valve controllers 22) located in each user's home. The air valves 20 are located in branch flues 4, and the main controller 11 and the air valve control device 22 communicate wirelessly or via wired connection.

[0051] Figure 2 This is a timing diagram for the damper control in related technologies. In these technologies, when there is a need for smoke extraction in a user's home, the range hood is turned on. The damper control device detects the range hood's activation at time t1' and controls the damper to open directly to the target angle (e.g., 90°). At time t2', the damper is fully open to the target angle. The main unit 1 and range hood 21 in the range hood system are turned on synchronously. As described in the background art, after the main unit 1 is turned on, a negative pressure is formed in the central flue 3 and the branch flue 4. This may cause airflow from the central flue 3 to enter the branch flue 4, causing airflow disturbance to the range hood 21 in the branch flue 4. If the negative pressure causes a reduction in the airflow sensed by the range hood 21, it may lead to adaptive airflow adjustment by the range hood 21, such as reducing the load current. The damper control device 22 adjusts the opening angle of the damper 20 according to the current operating status of the range hood 21. A sudden decrease in the load current of the range hood 21 may cause the damper control device 22 to mistakenly determine that the range hood 21 is currently off, and thus control the damper 20 to close. This results in the damper 20 in the branch flue 4 being closed when the range hood 21 is on, preventing the fumes from being discharged normally. This not only affects the fume extraction but may also cause the range hood to malfunction, impacting the user experience.

[0052] To address the aforementioned problems, this invention provides a method for controlling a damper located in a branch flue of a range hood system, thereby improving the problem of damper malfunction that may occur when the range hood is first turned on. Figure 3 A flowchart of a damper control method provided in an embodiment of the present invention is shown below. Figure 3 The methods for controlling the air valve include:

[0053] S110. Determine the working status of the range hood, which includes the on and off states.

[0054] Specifically, the air valve control device can first identify the current working status of the range hood, that is, whether the range hood is currently in the off state or in the on state.

[0055] This invention does not limit the method for determining the operating status of a range hood; those skilled in the art can configure it according to actual needs. For example, the operating status of a range hood can be determined by detecting its current setting and / or its load current.

[0056] S120. After the range hood is adjusted from the off state to the on state, the control valve is adjusted from the first angle θ1 to the second angle θ2.

[0057] Furthermore, when the range hood is detected to be adjusted from the off state to the on state, it indicates that the range hood is about to start. In other words, the process after adjusting from the off state to the on state corresponds to the process when the range hood is just turned on.

[0058] Unlike related technologies where the air valve control device directly opens the air valve to the target angle when the range hood is turned on, in this embodiment, the air valve can be first adjusted from a first angle θ1 to a second angle θ2. The first angle θ1 can be understood as the opening angle of the air valve when the range hood is in the off state, for example, the first angle θ1 can be 0°; the second angle θ2 can be a smaller angle between the first angle θ1 and the target angle (i.e., the third angle θ3), for example, it can be 30°, 40° or 60°, but is not limited to this.

[0059] For example, in a possible embodiment, 0.5 ≤ θ2 / θ3 ≤ 0.7, that is, the second angle θ2 can be at least 0.5 times the third angle θ3, and at most 0.7 times the third angle θ3. Controlling the second angle θ2 to meet this requirement ensures that the range hood can still exhaust smoke smoothly without producing obvious whistling noise.

[0060] Of course, in other embodiments not shown, those skilled in the art can set the specific value of the second angle θ2 according to actual needs.

[0061] By controlling the air damper to open to a smaller angle (second angle θ2), the amount of air entering the branch flues from the central flue can be effectively reduced, thereby weakening the impact of the negative pressure in the central flue on the air volume in the branch flues. This avoids the adaptive reduction of load current when the range hood is first turned on, ensuring that the load current remains within the normal range when the range hood is turned on, improving the misjudgment problem of the air damper control device, and enhancing the reliability of the range hood.

[0062] S130. After a first preset time delay, the control valve is adjusted from the second angle θ2 to the third angle θ3.

[0063] Furthermore, the controllable damper can be maintained at the second angle θ2 for a first preset time, so that the air volume in the branch flue remains in a stable state. After delaying the first preset time and waiting for the air volume to stabilize, the opening angle of the damper is adjusted from the second angle θ2 to the third angle θ3; the third angle θ3 can be 90°, but is not limited to this. Wherein, θ1≤θ2≤θ3, that is, the second angle θ2 is located between the first angle θ1 and the third angle θ3.

[0064] Figure 4 A timing diagram for damper control provided in an embodiment of the present invention, such as... Figure 4 As shown, after the range hood is detected to be turned on at time t1, the control valve is opened. Since the adjustment of the valve angle may take a certain amount of time, the valve is opened to the second angle θ2 at time t2. Then the control valve is maintained at the second angle θ2 for the first preset time T1. At time t3, the control valve is opened from the second angle θ2. At time t4, the valve is opened to the third angle θ3.

[0065] The specific value of the first preset time is not limited in this embodiment of the invention, and those skilled in the art can set it according to actual needs.

[0066] In addition, in possible embodiments, the air valve can be controlled to open at a lower rate (lower than the opening rate of the air valve in the related art), which can also reduce the impact of the negative pressure in the central flue. This embodiment of the present invention will not elaborate on or limit this setting.

[0067] The air valve control method provided by this invention first determines the working state of the range hood, including an on state and a off state. After the range hood is adjusted from the off state to the on state, the air valve is first controlled to adjust from a first angle θ1 to a second angle θ2. After a first preset time delay, the air valve is then controlled to adjust from the second angle θ2 to a third angle θ3; wherein θ1≤θ2≤θ3. Using this scheme, the air volume entering the branch flues through the air valve in the central flue during the range hood's operation can be effectively reduced, thereby weakening the impact of the negative pressure in the central flue on the air volume in the branch flues. This avoids the adaptive reduction of load current when the range hood is first turned on, improves the misjudgment problem of the air valve control device, ensures normal smoke exhaust from the range hood, and improves the reliability of the range hood.

[0068] Optionally, as described above, the main idea of ​​the present invention is to sequentially control the air valve to open to the third angle θ3 (target angle) after detecting that the range hood is turned on. The above embodiment exemplarily shows opening the valve to the third angle θ3 after a first preset time at the second angle θ2, that is, adjusting the air valve to the third angle θ3 in two steps, but is not limited to this. In other embodiments, multiple pre-opening angles may be included between the first angle θ1 and the third angle θ3, adjusting the air valve to the third angle θ3 multiple times.

[0069] For example, in one possible embodiment, S120 in the above embodiment, after the range hood is adjusted from the off state to the on state, the control valve is adjusted from the first angle θ1 to the second angle θ2, which can be refined as follows: after the range hood is adjusted from the off state to the on state, the control valve is adjusted from the first angle θ1 to the fourth angle θ4; after a second preset time delay, the control valve is adjusted from the fourth angle θ4 to the second angle θ2; wherein, θ1≤θ4≤θ2.

[0070] Please refer to Figure 5 , Figure 5 A flowchart of another air valve control method provided in an embodiment of the present invention is shown below. Figure 5 The air valve control method includes:

[0071] S210. Determine the working status of the range hood, which includes the on and off states.

[0072] The specific implementation method of this step is the same as S110 in the above embodiment, and will not be repeated here.

[0073] S220. After the range hood is adjusted from the off state to the on state, the control valve is adjusted from the first angle θ1 to the fourth angle θ4.

[0074] Specifically, the air valve can be controlled to adjust from the first angle θ1 to the fourth angle θ4. The fourth angle θ4 can be an angle between the first angle θ1 and the second angle θ2, for example, an angle slightly larger than the first angle θ1. The specific value is not limited.

[0075] S230, after a second preset time delay, the control valve is adjusted from the fourth angle θ4 to the second angle θ2.

[0076] Furthermore, the controllable damper can be maintained at the fourth angle θ4 for a second preset time, so that the air volume in the branch flue remains in a stable state. After the second preset time is delayed and the air volume stabilizes, the opening angle of the damper is adjusted from the fourth angle θ4 to the second angle θ2.

[0077] S240. After a first preset time delay, the control valve is adjusted from the second angle θ2 to the third angle θ3.

[0078] The specific implementation method in this step is the same as S130 in the above embodiment, and will not be repeated here.

[0079] Figure 6 for Figure 5 The control timing diagram of the damper control method shown is as follows: Figure 6As shown, after the range hood is detected to be turned on at time t1, the control valve opens. At time t2, the control valve opens to the fourth angle θ4. Then, the control valve maintains the fourth angle θ4 for a second preset time T2. At time t3, the control valve continues to open from the fourth angle θ4. At time t4, the control valve opens to the second angle θ2. The control valve maintains the second angle θ2 for a first preset time T1. At time t5, the control valve continues to open from the second angle θ2. At time t6, the valve opens to the third angle θ3.

[0080] Figure 5 In the embodiment shown, the air valve is further controlled to stay at a certain angle between the first angle θ1 and the second angle θ2 for a second preset time, and the air valve is adjusted to the third angle θ3 in three steps. This can further improve the stability of the air volume in the branch flue and further ensure that the load current of the range hood is maintained within the normal range.

[0081] Optionally, in this embodiment, when the first angle θ1 is 0° and the third angle θ3 is 90°, the fourth angle θ4 can be 30° and the second angle θ2 can be 60°, so that the adjustment of the opening angle of the air valve is more uniform.

[0082] In different embodiments, the values ​​of each pre-opening angle (such as the second angle θ2 and the fourth angle θ4) may be different, and the corresponding time spent at the pre-opening angle (such as the first preset time and the second preset time) may also be different. The second angle θ2 and the first preset time are not fixed values ​​and can be adjusted according to the actual scheme.

[0083] For example, in another possible embodiment, the above embodiment S130, after delaying the first preset time, controls the air valve to adjust from the second angle θ2 to the third angle θ3, can be refined as follows: after delaying the third preset time, controls the air valve to adjust from the second angle θ2 to the fifth angle θ5; after delaying the fourth preset time, controls the air valve to adjust from the fifth angle θ5 to the third angle θ3; wherein, θ2≤θ5≤θ3.

[0084] Please refer to Figure 7 , Figure 7 A flowchart of another damper control method provided in an embodiment of the present invention is shown below. Figure 7 The air valve control method includes:

[0085] S310. Determine the working status of the range hood, which includes the on and off states.

[0086] The specific implementation method of this step is the same as S110 in the above embodiment, and will not be repeated here.

[0087] S320. After the range hood is adjusted from the off state to the on state, the control valve is adjusted from the first angle θ1 to the second angle θ2.

[0088] The specific implementation method of this step is the same as S120 in the above embodiment, and will not be repeated here.

[0089] S330, after a third preset time delay, the control valve is adjusted from the second angle θ2 to the fifth angle θ5.

[0090] Specifically, the air valve can be controlled to maintain a third preset time at the second angle θ2, and after the third preset time is delayed, the opening angle of the air valve can be adjusted from the second angle θ2 to the fifth angle θ5 after the air volume stabilizes.

[0091] The fifth angle θ5 can be an angle between the second angle θ2 and the third angle θ3. For example, the fifth angle θ5 is an angle that is slightly larger than the second angle θ2.

[0092] S340, After a fourth preset time delay, the control valve is adjusted from the fifth angle θ5 to the third angle θ3;

[0093] Furthermore, the controllable damper can maintain the fourth preset time at the fifth angle θ5, delay the fourth preset time, and after the air volume stabilizes, adjust the opening angle of the damper from the fifth angle θ5 to the third angle θ3.

[0094] Specifically, this embodiment is similar to the one described above. Figure 5 The illustrated embodiments are similar, both involving adjusting the damper to the third angle θ3 in three stages. The difference lies in... Figure 5 In the illustrated embodiment, the air valve is first adjusted to an angle less than the second angle θ2, then adjusted to the second angle θ2, and finally adjusted to the third angle θ3. In this embodiment, the air valve is first adjusted to the second angle θ2, then adjusted to an angle slightly greater than the second angle θ2, and finally adjusted to the third angle θ3.

[0095] In this configuration, when the first angle θ1 is 0° and the third angle θ3 is 90°, the second angle θ2 can be 30° and the fifth angle θ5 can be 60°, making the adjustment of the damper opening angle more uniform.

[0096] Furthermore, it is understood that the air valve requires at least a first preset time to move from the second angle θ2 to the third angle θ3. In this embodiment, this is equivalent to controlling the air valve to open from the second angle θ2 to the fifth angle θ5 and then adjust it from the fifth angle θ5 to the third angle θ3 within the first preset time. Therefore, the sum of the third preset time and the fourth preset time should be less than or equal to the first preset time. If the time required for the air valve to adjust between the two angles is not considered, the sum of the third preset time and the fourth preset time can be equal to the first preset time; if the time required for the air valve to adjust between the two angles is considered, the sum of the third preset time and the fourth preset time should be less than the first preset time.

[0097] Figure 8 for Figure 7 The control timing diagram of the damper control method shown is as follows: Figure 7 As shown, after the range hood is detected to be turned on at time t1, the control valve opens. At time t2, the control valve opens to the second angle θ2. Then, the control valve maintains the second angle θ2 for a third preset time T3. At time t3, the control valve continues to open from the second angle θ2. At time t4, the valve opens to the fifth angle θ5. The control valve maintains the fifth angle θ5 for a fourth preset time T4. At time t5, the control valve continues to open from the fifth angle θ5. At time t6, the valve opens to the third angle θ3.

[0098] Optionally, those skilled in the art will understand that the load current of a range hood varies depending on its operating state. When the range hood is off, the load current should be close to or equal to 0; when the range hood is on, the load current should be greater than 0. Furthermore, the load current should gradually increase as the range hood's speed setting increases. Based on this, in this invention, the damper control device can be electrically connected to the range hood, and the damper control device determines the operating state of the range hood based on its load current.

[0099] For example, determining the operating state of a range hood may include: acquiring the load current of the range hood; determining that the range hood is in a closed state when the load current is less than a first current threshold, and determining that the range hood is in an open state when the load current is greater than a second current threshold; the first current threshold is less than the second current threshold; before adjusting the control valve from a first angle θ1 to a second angle θ2 after the range hood is adjusted from a closed state to an open state, this includes: determining that the range hood is adjusted from a closed state to an open state when the load current changes from the first current threshold to the second current threshold.

[0100] Specifically, in this embodiment of the invention, the air valve control device can detect the load current of the range hood in real time. When the detected load current is less than a first current threshold, it is determined that the range hood is in a closed state. The first current threshold can be understood as a lower current limit, for example, a value close to 0. When the detected load current is greater than a second current threshold, it is determined that the range hood is in a turned-on state. The second current threshold can be understood as an upper current limit, and its specific value is not limited.

[0101] The first and second current thresholds can be obtained through actual testing. The load current magnitudes corresponding to the range hood's on and off states are pre-detected and recorded to determine the first and second current thresholds. The specific determination methods and numerical values ​​of the first and second current thresholds are not elaborated or limited in this invention.

[0102] Furthermore, when the load current is detected to rise from the first current threshold to the second current threshold, it can be considered that the range hood has changed from the off state to the on state, and then the subsequent process of adjusting the air valve angle is executed.

[0103] Since the load current can reflect the working status of the range hood relatively accurately, in this embodiment, the load current of the range hood is used to determine whether to adjust the opening angle of the air valve, which can ensure that the air valve is opened to the third angle θ3 in turn when the range hood is first turned on.

[0104] Alternatively, due to external interference, the operating current of the range hood may experience brief fluctuations. For example, when the user has not turned on the range hood, external interference may cause a brief increase in the load current of the range hood. If this process is still interpreted as the range hood being turned on, a misjudgment will occur.

[0105] In view of this, in this embodiment of the invention, determining that the range hood is adjusted from the off state to the on state when the load current is detected to change from the first current threshold to the second current threshold may include: after detecting that the load current changes from the first current threshold to the second current threshold and maintaining the second current threshold for a first time, determining that the range hood is adjusted from the off state to the on state.

[0106] Specifically, in this embodiment, in addition to the load current meeting the conditions for the range hood to turn on, a further determination condition of the duration of the second current threshold maintenance can be added. Only when the load current changes from the first current threshold to the second current threshold, and the load current remains below the second current threshold for a first duration, is the range hood determined to have changed from an off state to an on state. This avoids the problem of the damper control device misjudging the range hood's status due to brief fluctuations in the load current.

[0107] You can continue to refer to this. Figure 4 , Figure 4 The load current change is represented by a bold black line. At time t0, the load current is detected to change from the first current threshold I1 to the second current threshold I2 and is maintained at the second current threshold I2 for a first time T5. At time t1, it is determined that the range hood is turned on and the air valve is controlled to open. At time t2, the air valve is opened to the second angle θ2. Then, the air valve is controlled to maintain the first preset time T1 at the second angle θ2. At time t3, the air valve is controlled to open from the second angle θ2. At time t4, the valve is opened to the third angle θ3.

[0108] Optionally, as described in the above embodiments, the range hood system may further include a main controller; after the range hood is adjusted from the off state to the on state, and the control valve is adjusted from the first angle θ1 to the second angle θ2, the system may further include: obtaining a third angle θ3 determined and issued by the main controller based on the number of range hoods in the range hood system.

[0109] Specifically, once the air valve control device in a user's home determines that the corresponding range hood is turned on, it can report the range hood's on status. The main controller determines the number of range hoods in the system that are in the on status based on the reported range hood on status from each air valve control device. Then, it calls the power distribution algorithm to calculate the third angle θ3 of each air valve opening and broadcasts the third angle θ3 to each air valve control device.

[0110] The damper control device receives the third angle θ3 from the main controller, and then controls the damper to adjust from the first angle θ1 to the third angle θ3 sequentially. The process of the damper control device reporting the range hood's on / off status can be performed before or after the damper angle is adjusted to the second angle θ2. This embodiment of the invention does not limit this, as long as the damper control device can receive the third angle θ3 broadcast by the main controller before controlling the damper to adjust from the second angle θ2 to the third angle θ3.

[0111] Those skilled in the art can configure the method by which the main controller calculates the third angle θ3 according to actual needs, and this invention will not elaborate on or limit this.

[0112] Figure 9 This is a control logic diagram of a damper control method provided in an embodiment of the present invention, combined with... Figure 9 The following is an overall introduction to the air valve control method of the present invention. First, it is determined whether the range hood has been adjusted from the off state to the on state. After the range hood is turned on, the air valve can be controlled to adjust from the first angle θ1 to the second angle θ2. Then, the on state of the range hood is reported to the main controller. Further, when the third angle θ3 is received from the main controller, the air valve is controlled to open from the second angle θ2 to the third angle θ3 after a first preset time delay, until the range hood is turned off.

[0113] Based on the same concept, embodiments of the present invention also provide a damper control device for executing the damper control method provided in any embodiment of the present invention. Figure 10 This is a schematic diagram of a damper control device provided in an embodiment of the present invention, with reference to... Figure 10 The damper control device 22 includes:

[0114] The working status judgment module 100 is used to determine the working status of the range hood 21, which includes the on state and the off state.

[0115] The air valve control module 200 is used to control the air valve 20 to adjust from the first angle θ1 to the second angle θ2 after the range hood 21 is adjusted from the closed state to the open state, and after a first preset time delay, control the air valve 20 to adjust from the second angle θ2 to the third angle θ3; wherein, θ1≤θ2≤θ3.

[0116] The damper control device provided by this invention can effectively reduce the amount of air entering the branch flues through the damper in the central flue during the operation of the range hood, thereby reducing the impact of the negative pressure in the central flue on the air volume in the branch flues. It avoids the adaptive reduction of load current when the range hood is first turned on, improves the misjudgment problem of the damper control device, ensures normal smoke exhaust from the range hood, and enhances the reliability of the range hood.

[0117] Optionally, in a possible embodiment, the damper control module 200 can also be used to control the damper 20 to adjust from the first angle θ1 to the fourth angle θ4 after the range hood 21 is adjusted from the closed state to the open state, and after a second preset time delay, control the damper 20 to adjust from the fourth angle θ4 to the second angle θ2; wherein, θ1≤θ4≤θ2.

[0118] Optionally, in a possible embodiment, the air valve control module 200 can also be used to control the air valve 20 to adjust from the second angle θ2 to the fifth angle θ5 after a third preset time delay, and to control the air valve 20 to adjust from the fifth angle θ5 to the third angle θ3 after a fourth preset time delay; wherein, θ2≤θ5≤θ3, and the sum of the third preset time and the fourth preset time is less than or equal to the first preset time.

[0119] Optionally, in a possible embodiment, the working state determination module 100 may include a current acquisition unit 110 and a working state determination unit 120. The current acquisition unit 110 is used to acquire the load current of the range hood 21; the working state determination unit 120 is used to determine that the range hood 21 is in a closed state when the load current is less than a first current threshold, and to determine that the range hood 21 is in a turned-on state when the load current is greater than a second current threshold; the first current threshold is less than the second current threshold.

[0120] The working status judgment unit 120 can also be used to determine that the range hood 21 is adjusted from the off state to the on state when the load current changes from the first current threshold to the second current threshold.

[0121] Optionally, in a possible embodiment, the working state determination unit 120 may also be used to determine that the range hood 21 is adjusted from the off state to the on state after detecting that the load current changes from the first current threshold to the second current threshold and maintains the second current threshold for a first time.

[0122] Optionally, in possible embodiments, the damper control device 22 may further include a communication module 300, which is used to interact with the main controller in the range hood system, report the working status of the range hood 21, and obtain the third angle θ3 determined and issued by the main controller based on the number of range hoods 21 in the range hood system.

[0123] Optionally, the damper control device 22 may also include a power module 400 for supplying power to the various modules within the damper control device 22.

[0124] The air valve control device provided in the embodiments of the present invention includes all the technical features and corresponding beneficial effects of the air valve control method provided in any embodiment of the present invention, which will not be repeated here.

[0125] This invention also provides a range hood system (such as...) Figure 1 As shown, it includes a host 1 and a terminal component 2. The host 1 includes a fan 10 and a main controller 11. The terminal component 2 includes a damper 20, a range hood 21, and a damper control device 22 provided in any embodiment of the present invention.

[0126] The present invention also provides an electronic device, including a processor and a memory, wherein the memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the damper control method provided in any embodiment of the present invention.

[0127] The processor may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed through integrated logic circuits in the processor's hardware or through software instructions. The processor can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The memory may include high-speed random access memory (RAM) and may also include non-volatile memory, such as at least one disk storage device.

[0128] The present invention also provides a computer-readable storage medium storing computer-executable instructions. When these computer-executable instructions are invoked and executed by a processor, they cause the processor to implement the damper control method provided in any embodiment of the present invention. Specific implementation details can be found in the method embodiments, and will not be repeated here.

[0129] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for controlling an air valve, characterized in that, A method for controlling a damper in a range hood system includes: Determine the working status of the range hood, including the on state and the off state; After the range hood is adjusted from the off state to the on state, the air valve is controlled to be adjusted from the first angle θ1 to the second angle θ2; After a first preset time delay, the air valve is controlled to adjust from the second angle θ2 to the third angle θ3; Where θ1≤θ2≤θ3; Determine the operating status of the range hood, including: Obtain the load current of the range hood; When the load current is less than a first current threshold, the range hood is determined to be in the off state; when the load current is greater than a second current threshold, the range hood is determined to be in the on state; the first current threshold is less than the second current threshold. After the range hood is switched from the off state to the on state, and before the air valve is adjusted from the first angle θ1 to the second angle θ2, the following steps are included: When the load current changes from the first current threshold to the second current threshold, it is determined that the range hood is adjusted from the off state to the on state; When the load current is detected to change from the first current threshold to the second current threshold, determining that the range hood is adjusted from the off state to the on state includes: After detecting that the load current changes from the first current threshold to the second current threshold and is maintained at the second current threshold for a first duration, it is determined that the range hood is adjusted from the off state to the on state.

2. The air valve control method according to claim 1, characterized in that, After the range hood is switched from a closed state to an open state, controlling the air valve to adjust from a first angle θ1 to a second angle θ2 includes: After the range hood is adjusted from the off state to the on state, the air valve is controlled to be adjusted from the first angle θ1 to the fourth angle θ4; After a second preset time delay, the air valve is controlled to adjust from the fourth angle θ4 to the second angle θ2; Where θ1≤θ4≤θ2.

3. The air valve control method according to claim 1, characterized in that, After delaying the first preset time, controlling the air valve to adjust from the second angle θ2 to the third angle θ3 includes: After a third preset time delay, the air valve is controlled to adjust from the second angle θ2 to the fifth angle θ5; After a fourth preset time delay, the air valve is controlled to adjust from the fifth angle θ5 to the third angle θ3; Wherein, θ2≤θ5≤θ3, and the sum of the third preset time and the fourth preset time is less than or equal to the first preset time.

4. The air valve control method according to any one of claims 1 to 3, characterized in that, The range hood system also includes a main controller; After the range hood is switched from the off state to the on state, and after the air valve is adjusted from the first angle θ1 to the second angle θ2, the following steps are also included: The third angle θ3 is obtained by the main controller based on the number of range hoods in the range hood system that are turned on.

5. The air valve control method according to claim 1, characterized in that, 0.5≤θ2 / θ3≤0.

7.

6. A damper control device, characterized in that, For performing the damper control method according to any one of claims 1 to 5, the damper control device comprises: The working status determination module is used to determine the working status of the range hood, which includes an on state and an off state; The air valve control module is used to control the air valve to adjust from a first angle θ1 to a second angle θ2 after the range hood is adjusted from a closed state to an open state, and after a first preset time delay, control the air valve to adjust from the second angle θ2 to a third angle θ3. Where θ1≤θ2≤θ3.

7. An electronic device, characterized in that, include: One or more processors; Storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the damper control method as described in any one of claims 1 to 5.

8. A readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the air valve control method as described in any one of claims 1 to 5.

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