Range hood control method and range hood

Abstract

The application provides a range hood control method and a range hood. The range hood control method comprises the following steps: S1: determining first oil fume concentration information of an environment where the range hood is located; obtaining multiple air volume gears of the range hood and initial concentration thresholds corresponding to the multiple air volume gears; S2: determining an initial air volume gear matched by the range hood according to the first oil fume concentration information and the initial concentration thresholds corresponding to the multiple air volume gears; S3: controlling the range hood to work at the initial air volume gear for a first preset time, and then determining second oil fume concentration information of the environment where the range hood is located; S4: dynamically adjusting a threshold range corresponding to the initial air volume gear based on the first oil fume concentration information and the second oil fume concentration information, so as to obtain corrected concentration thresholds corresponding to the multiple air volume gears; and S5: determining a corrected air volume gear matched by the range hood according to the second oil fume concentration information and the corrected concentration thresholds corresponding to the multiple air volume gears. Thus, the convenience of using the range hood and the experience of a user are effectively improved.

Description

Technical Field

[0001] This invention relates to the technical field of range hood control, specifically to a range hood control method and a range hood. Background Technology

[0002] Range hoods have become an indispensable household appliance in people's daily lives.

[0003] Current range hoods typically offer three fan speed settings: low, medium, and high, based on the concentration of cooking fumes. In practice, users usually adjust the setting to the appropriate level based on the environment and their personal experience.

[0004] However, there is a fixed correspondence between the concentration of cooking fumes and the airflow level. The concentration of cooking fumes in the environment where the range hood is located changes dynamically with the cooking process. In actual use, this can easily lead to a mismatch between the actual concentration of cooking fumes and the airflow level. This not only requires the user to frequently switch levels, but also easily results in wasted energy or poor suction and exhaust performance. Summary of the Invention

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a range hood control method is provided, the technical solution of which is as follows.

[0006] The control methods for range hoods include:

[0007] S1: Determine the initial oil fume concentration information of the environment where the range hood is located; obtain multiple airflow levels of the range hood and the initial concentration threshold corresponding to each airflow level;

[0008] S2: Determine the initial airflow level of the range hood based on the first oil fume concentration information and the initial concentration threshold corresponding to each airflow level;

[0009] S3: After controlling the range hood to work at the initial airflow level for a first preset time, determine the second oil fume concentration information of the environment where the range hood is located;

[0010] S4: Based on the first and second oil fume concentration information, dynamically adjust the threshold range corresponding to the initial airflow level to obtain the corrected concentration threshold corresponding to each airflow level.

[0011] S5: Determine the corrected airflow level to match the range hood based on the second oil fume concentration information and the corrected concentration threshold corresponding to each airflow level;

[0012] S6: After controlling the range hood to work at the correct airflow level for the first preset time, update the second oil fume concentration information of the environment where the range hood is located.

[0013] Repeat steps S4 through S6 until the work is finished.

[0014] The range hood control method of the present invention allows the range hood to determine the first oil fume concentration information of the environment and the initial concentration threshold of the first oil fume concentration information. After controlling the range hood to work at the fan speed corresponding to the initial concentration threshold for a certain period of time, the range hood can determine the second oil fume concentration information of the environment again. By comparing the first oil fume concentration information and the second oil fume concentration information, the current smoke extraction efficiency of the range hood can be reflected. Based on the first and second oil fume concentration information, the initial concentration threshold of the range hood can be dynamically adjusted to obtain a corrected concentration threshold. The operating level of the range hood is then adjusted based on this corrected concentration threshold. This allows for dynamic adjustment of the oil fume concentration range in the environment surrounding the range hood, enabling dynamic and real-time adjustment of the exhaust volume. This effectively avoids mismatches between the oil fume concentration and the exhaust volume, preventing energy waste or poor extraction performance. It significantly improves the range hood's extraction effect and efficiency, as well as its practicality. Furthermore, users do not need to frequently manually adjust the range hood's setting when oil fume concentration changes, effectively enhancing the convenience and user experience.

[0015] For example, the threshold range corresponding to the initial airflow level is dynamically adjusted based on the first and second oil fume concentration information to obtain the corrected concentration threshold for each airflow level. Specifically, this includes: determining the relative change value between the first and second oil fume concentration information; determining the initial concentration threshold corresponding to the initial airflow level based on the relative change value using a first or second parameter; and adaptively adjusting the initial concentration thresholds of levels adjacent to the initial airflow level to obtain the corrected concentration threshold for each airflow level. In this way, the relative change value between the first and second oil fume concentration information can be determined, and the corrected concentration threshold for each airflow level can be adjusted based on the relative change value using a first or second parameter. This allows for flexible switching of airflow levels in the range hood, effectively improving its practicality and applicability.

[0016] For example, determining the initial concentration threshold corresponding to the initial airflow level based on the relative change value, using either a first parameter or a second parameter, and adaptively adjusting the initial concentration threshold of adjacent levels, specifically includes: determining whether the relative change value within a second preset time period is not greater than a preset change value; if so, adjusting the initial concentration threshold corresponding to the initial airflow level using the first parameter, and adaptively adjusting the initial concentration threshold of adjacent levels; if not, adjusting the initial concentration threshold corresponding to the initial airflow level using the second parameter, and adaptively adjusting the initial concentration threshold of adjacent levels. In this way, the relative change value between the first and second oil fume concentration information can be determined, and based on the comparison between the relative change value and the preset change value, the range hood can be controlled to operate at different levels. That is, when the relative change value within the second preset time period is less than or equal to the preset change value, the range of the initial concentration threshold can be expanded based on the first parameter to obtain a corrected concentration threshold. Thus, while meeting the range hood's extraction needs, frequent adjustments to the range hood's extraction airflow can be avoided, ensuring overall operational stability. When the relative change value within the second preset time period is greater than the preset change value, the range of the initial concentration threshold can be expanded based on the second parameter to obtain a corrected concentration threshold. In this way, without affecting the range hood's ability to adjust the suction and exhaust volume according to the corrected concentration threshold, it also avoids the range hood frequently adjusting its suction and exhaust volume under small concentration fluctuations. This not only effectively reduces the range hood's energy consumption and extends its service life, but also meets the different suction and exhaust needs of the range hood, effectively improving its practicality and flexibility of use.

[0017] For example, the airflow settings include a first setting, a second setting, and a third setting, which are sequentially progressive and correspond to a first initial threshold, a second initial threshold, and a third initial threshold, respectively. The initial concentration threshold corresponding to the initial airflow setting is adjusted using a first parameter, and the initial concentration thresholds of settings adjacent to the initial airflow setting are adaptively adjusted. Specifically, this includes: when the initial airflow setting is the first setting, increasing the maximum value of the first initial threshold using the first parameter, and using this value as the minimum value of the second initial threshold corresponding to the medium setting; when the initial airflow setting is the second setting, decreasing the minimum value of the second initial threshold using the first parameter, and using this value as the maximum value of the first initial threshold corresponding to the low setting; increasing the maximum value of the second initial threshold using the first parameter, and using this value as the minimum value of the third initial threshold corresponding to the high setting; when the initial airflow setting is the third setting, decreasing the minimum value of the third initial threshold using the first parameter, and using this value as the maximum value of the second initial threshold corresponding to the medium setting. In this way, the initial threshold corresponding to the airflow level and the initial concentration threshold of the adjacent level can be adjusted based on the first parameter to obtain the corrected concentration threshold corresponding to the airflow level. Based on the second oil fume concentration information, the corresponding range in the corrected concentration threshold can be accurately found, and the airflow level can be adjusted in a timely manner so that the suction and exhaust airflow of the oil fume can be adapted to the oil fume concentration of its environment, effectively improving the suction and exhaust effect and efficiency of the range hood.

[0018] For example, the airflow settings include a first setting, a second setting, and a third setting, which are progressively higher and lower, respectively, corresponding to a first initial threshold, a second initial threshold, and a third initial threshold. The initial concentration threshold corresponding to the initial airflow setting is adjusted using a second parameter, and the initial concentration thresholds of settings adjacent to the initial airflow setting are adaptively adjusted. Specifically, this includes: when the initial airflow setting is the first setting, increasing the maximum value of the first initial threshold using the second parameter, and using this value as the minimum value of the second initial threshold corresponding to the medium setting; when the initial airflow setting is the second setting, decreasing the minimum value of the second initial threshold using the second parameter, and using this value as the maximum value of the first initial threshold corresponding to the low setting; increasing the maximum value of the second initial threshold using the first parameter, and using this value as the minimum value of the third initial threshold corresponding to the high setting; when the initial airflow setting is the third setting, decreasing the minimum value of the third initial threshold using the second parameter, and using this value as the maximum value of the second initial threshold corresponding to the medium setting. In this way, the initial threshold corresponding to the airflow level and the initial concentration threshold of the adjacent level can be adjusted based on the second parameter to obtain the corrected concentration threshold corresponding to the airflow level. Based on the second oil fume concentration information, the corresponding range in the corrected concentration threshold can be accurately found, and the airflow level can be adjusted in a timely manner. This way, while the range hood meets the suction and exhaust needs, it can also avoid frequent adjustments to the suction and exhaust airflow of the range hood, effectively improving the overall operational stability of the range hood.

[0019] For example, determining the corrected airflow level for the range hood based on the second oil fume concentration information and the corrected concentration threshold corresponding to each airflow level specifically includes: when the initial airflow level is the first level, comparing the second oil fume concentration information with the corrected concentration threshold corresponding to each airflow level; if the second oil fume concentration information is within the corrected concentration threshold corresponding to the first level, then the corrected airflow level for the range hood is determined to be the first level; if the second oil fume concentration information is not within the corrected concentration threshold corresponding to the first level, then the corrected airflow level for the range hood is determined to be the second level. Thus, when the initial airflow level of the range hood is the first level, the range hood can be controlled to operate at either the first or second level based on the specific range of the second oil fume concentration information within the corrected concentration threshold, thereby adapting the smoke extraction airflow to the oil fume concentration of its environment, effectively improving the smoke extraction effect and efficiency of the range hood.

[0020] For example, determining the corrected airflow level of the range hood based on the second oil fume concentration information and the corrected concentration threshold corresponding to each airflow level specifically includes: when the initial airflow level is the second level, comparing the second oil fume concentration information with the corrected concentration threshold corresponding to each airflow level; if the second oil fume concentration information is at the corrected concentration threshold corresponding to the first level, then the corrected airflow level of the range hood is determined to be the first level; if the second oil fume concentration information is at the corrected concentration threshold corresponding to the second level, then the corrected airflow level of the range hood is determined to be the second level; if the second oil fume concentration information is at the corrected concentration threshold corresponding to the third level, then the corrected airflow level of the range hood is determined to be the third level. In this way, when the initial airflow setting of the range hood is the second setting, the range hood can be flexibly switched between the first, second, and third settings based on the specific range of the second oil fume concentration information within the correction concentration threshold. This allows the range hood's airflow to be adapted to the oil fume concentration of its environment, ensuring both the range hood's suction and exhaust effect and efficiency while reducing its energy consumption.

[0021] For example, determining the corrected airflow level for the range hood based on the second oil fume concentration information and the corrected concentration threshold corresponding to each airflow level specifically includes: when the initial airflow level is the third level, comparing the second oil fume concentration information with the corrected concentration threshold corresponding to each airflow level; if the second oil fume concentration information is within the corrected concentration threshold corresponding to the third level, then the corrected airflow level for the range hood is determined to be the third level; if the second oil fume concentration information is not within the corrected concentration threshold corresponding to the third level, then the corrected airflow level for the range hood is determined to be the second level. Thus, when the initial airflow level of the range hood is the third level, the range hood can be controlled to operate at either the third or second level based on the specific range of the second oil fume concentration information within the corrected concentration threshold, thereby adapting the smoke extraction volume to the oil fume concentration of its environment. This ensures the smoke extraction effect and efficiency of the range hood while also reducing its energy consumption.

[0022] For example, after controlling the range hood to operate at the corrected airflow level for a first preset time, the second oil fume concentration information of the environment where the range hood is located is updated. Specifically, this includes: after controlling the range hood to operate at the corrected airflow level, updating the second oil fume concentration information of the environment where the range hood is located, so as to dynamically adjust the threshold range corresponding to the initial airflow level based on the updated second oil fume concentration information and the first oil fume concentration information. In this way, after the range hood operates at the corrected airflow level for a first preset time, the second oil fume concentration information of the environment where the range hood is located can be periodically determined, and the above steps S4 to S6 can be repeated to determine whether the range hood's current setting can meet the usage requirements, effectively ensuring the accuracy and real-time performance of the range hood control method results.

[0023] For example, determining the first oil fume concentration information of the environment where the range hood is located specifically includes: acquiring multiple oil fume concentration values ​​within a third preset time period, and determining the average of the multiple oil fume concentration values ​​as the first oil fume concentration information; and / or, determining the second oil fume concentration information of the environment where the range hood is located specifically includes: acquiring multiple oil fume concentration values ​​within a fourth preset time period, and determining the average of the multiple oil fume concentration values ​​as the second oil fume concentration information. In this way, multiple oil fume concentration values ​​can be acquired within a preset time period, and the average of the multiple oil fume concentration values ​​can be determined as the first oil fume concentration information or the second oil fume concentration, effectively ensuring the accuracy and objectivity of the acquisition results of the first oil fume concentration information or the second oil fume concentration, thereby ensuring the accuracy of the range hood control method.

[0024] According to another aspect of the present invention, a range hood is also provided, wherein the air volume is adjusted using the range hood control method described above.

[0025] The range hood of the present invention uses the range hood control method described above. Since the range hood control method described above has the beneficial effects described above, the range hood using the range hood control method described above will also necessarily have the beneficial effects described above.

[0026] The advantages and features of the present invention will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0027] The following figures are included as part of this invention for understanding its principles. The figures illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the figures,

[0028] Figure 1 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 1 ;

[0029] Figure 2 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 2 ;

[0030] Figure 3 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 3 ;

[0031] Figure 4 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 4 ;

[0032] Figure 5 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 5 ;

[0033] Figure 6 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 6 ;

[0034] Figure 7 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 7 ;

[0035] Figure 8 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 8 ;

[0036] Figure 9 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 9 ;

[0037] Figure 10A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 ;

[0038] Figure 11 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 one;

[0039] Figure 12 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 two;

[0040] Figure 13 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 three;

[0041] Figure 14 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 Four;

[0042] Figure 15 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 five;

[0043] Figure 16 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 six;

[0044] Figure 17 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 seven;

[0045] Figure 18 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 eight;

[0046] Figure 19 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 Nine;

[0047] Figure 20 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 2 ten. Detailed Implementation

[0048] In the following description, numerous details are provided to enable a thorough understanding of the invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the invention, and that the invention can be practiced without one or more of these details. Furthermore, to avoid obscuring the invention, some technical features well-known in the art have not been described in detail.

[0049] To fully understand the embodiments of the present invention, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below; however, in addition to these detailed descriptions, the present invention may have other embodiments.

[0050] To at least partially solve the aforementioned technical problems, according to one aspect of this application, a range hood control method is provided. This range hood control method can dynamically adjust the initial concentration threshold of the range hood to obtain a corrected concentration threshold, and control the extraction and exhaust of cooking fumes based on a second smoke volume corresponding to the corrected concentration threshold.

[0051] Figure 1 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 1 .like Figure 1 As shown, the range hood control method includes steps S1 to S6.

[0052] S1: Determine the initial oil fume concentration information of the environment where the range hood is located; obtain multiple airflow settings of the range hood and the initial concentration threshold corresponding to each airflow setting.

[0053] Specifically, the range hood can be equipped with a sensor that can be used to sense the concentration of cooking fumes in the environment in real time. This sensor can be a PM2.5 sensor or an organic matter concentration sensor, etc., and this application does not specifically limit its application to this.

[0054] The aforementioned first oil fume concentration information can specifically be expressed as the percentage of oil fume in the air detected by the sensor when the range hood is not extracting or exhausting oil fumes. For example, the first oil fume concentration information can be 25%, 50%, 60%, 80%, etc.

[0055] The aforementioned range hood may have multiple airflow levels. For example, the multiple airflow levels may specifically include a first level, a second level, and a third level that are sequentially progressive. The initial concentration threshold corresponding to the first level may be 0%-30%, the initial concentration threshold corresponding to the second level may be 30%-60%, and the initial concentration threshold corresponding to the third level may be 60%-100%.

[0056] S2: Based on the first oil fume concentration information and the initial concentration threshold corresponding to each airflow level, determine the initial airflow level to match the range hood.

[0057] For example, if the first oil fume concentration information is 25%, the range hood can operate at the first setting because it falls within the initial concentration threshold corresponding to the first setting. Similarly, if the first oil fume concentration information is 45%, the range hood can operate at the second setting. If the first oil fume concentration information is 70%, the range hood can operate at the third setting.

[0058] S3: After controlling the range hood to operate at the initial airflow level for a first preset time, determine the second oil fume concentration information of the environment where the range hood is located.

[0059] The aforementioned first preset time can be 5 seconds, 10 seconds, or 15 seconds, etc., and this application does not make a specific limitation in this regard.

[0060] The aforementioned second oil fume concentration information can be specifically expressed as the percentage of oil fumes in the air detected by the sensor after the range hood has been operating for a first preset time.

[0061] It is understandable that the second oil fume concentration information may be the same as, higher than, or lower than the first oil fume concentration information. For example, after the range hood has extracted a certain amount of oil fume, the second oil fume concentration information may be lower than the first oil fume concentration information. However, when the oil fume in the environment where the range hood is located increases, and the range hood cannot extract the oil fume in time with the first extraction capacity, resulting in oil fume accumulation, the second oil fume concentration information may be higher than the first oil fume concentration information.

[0062] S4: Based on the first and second oil fume concentration information, dynamically adjust the threshold range corresponding to the initial airflow level to obtain the corrected concentration threshold corresponding to each airflow level.

[0063] The change between the first and second oil fume concentration information can be compared and determined. This change can reflect the current suction and exhaust effect and efficiency of the range hood. By using this change, the concentration range of the range hood can be determined under the condition of meeting the usage requirements. That is, by adjusting the two endpoint values ​​of the initial concentration threshold, the corrected concentration threshold corresponding to each air volume level can be obtained.

[0064] For example, taking the initial concentration threshold corresponding to the first setting as 0%-30% as an example, the initial concentration threshold corresponding to the first setting can be adjusted to 0%-33% based on the first and second oil fume concentration information to obtain the corrected concentration threshold corresponding to the first setting. Similarly, the initial concentration thresholds corresponding to the second and third settings can also be adjusted to their corresponding corrected concentration thresholds.

[0065] S5: Based on the second oil fume concentration information and the correction concentration threshold corresponding to each airflow level, determine the corrected airflow level to match the range hood.

[0066] For example, if the second oil fume concentration information is 32%, since 32% is within the corrected concentration threshold corresponding to the first setting, the range hood can switch from the second setting to the first setting. It is understood that the first, second, and third settings can be distinguished by different rotation speeds of the range hood or different cross-sectional areas of the smoke inlet.

[0067] S6: After controlling the range hood to operate at the correct airflow level for the first preset time, update the second oil fume concentration information of the environment where the range hood is located.

[0068] After the range hood has been operating at the corrected airflow setting for the first preset time, the second oil fume concentration information of the range hood can be updated again to determine whether the range hood setting needs to be adjusted. This allows the range hood to adjust the setting in a timely manner to meet the current oil fume concentration, effectively ensuring the range hood's suction and exhaust performance.

[0069] Repeat steps S4 through S6 until the work is finished.

[0070] The range hood control method of the present invention allows the range hood to determine the first oil fume concentration information of the environment and the initial concentration threshold of the first oil fume concentration information. After controlling the range hood to work at the fan speed corresponding to the initial concentration threshold for a certain period of time, the range hood can determine the second oil fume concentration information of the environment again. By comparing the first oil fume concentration information and the second oil fume concentration information, the current smoke extraction efficiency of the range hood can be reflected. Based on the first and second oil fume concentration information, the initial concentration threshold of the range hood can be dynamically adjusted to obtain a corrected concentration threshold. The operating level of the range hood is then adjusted based on this corrected concentration threshold. This allows for dynamic adjustment of the oil fume concentration range in the environment surrounding the range hood, enabling dynamic and real-time adjustment of the exhaust volume. This effectively avoids mismatches between the oil fume concentration and the exhaust volume, preventing energy waste or poor extraction performance. It significantly improves the range hood's extraction effect and efficiency, as well as its practicality. Furthermore, users do not need to frequently manually adjust the range hood's setting when oil fume concentration changes, effectively enhancing the convenience and user experience.

[0071] In some embodiments, Figure 2 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 2 .like Figure 2As shown, step S4: dynamically adjust the threshold range corresponding to the initial airflow level based on the first oil fume concentration information and the second oil fume concentration information to obtain the corrected concentration threshold corresponding to each airflow level, specifically including steps S7 and S8.

[0072] Step S7: Determine the relative change between the first oil fume concentration information and the second oil fume concentration information.

[0073] The aforementioned relative change value can be determined specifically by the difference between the first oil fume concentration information and the second oil fume concentration information.

[0074] The actual resistance coefficient can be determined using the following formula:

[0075] D = |Aa|;

[0076] Where D is the relative change value, A is the second oil fume concentration information, and a is the first oil fume concentration information.

[0077] Step S8: Based on the relative change value, determine the initial concentration threshold corresponding to the initial airflow level by adjusting the first parameter or the second parameter, and adaptively adjust the initial concentration threshold of the levels adjacent to the initial airflow level to obtain the corrected concentration threshold corresponding to each airflow level.

[0078] The first and second parameters mentioned above can be represented by specific change values. Taking the first parameter as 5% as an example, the initial concentration threshold corresponding to the first setting (0%-30%) can be adjusted to 0%-35% to obtain the corrected concentration threshold corresponding to the first setting. Simultaneously, the corrected concentration threshold corresponding to the second setting adjacent to the first setting can be adjusted to 35%-60%. Similarly, the initial airflow setting and the settings adjacent to the initial airflow setting can also be adjusted according to the second parameter, which will not be elaborated further here. Of course, this application does not specifically limit the magnitude of the first and second parameters; that is, the first and second parameters can be the same or different.

[0079] In the above embodiments, the relative change value between the first oil fume concentration information and the second oil fume concentration information can be determined, and the correction concentration threshold corresponding to each air volume level can be adjusted according to the relative change value using the first parameter or the second parameter. This allows the range hood to flexibly switch air volume levels, effectively improving the practicality and applicability of the range hood.

[0080] In some embodiments, Figure 3 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 3 .like Figure 3As shown, step S8: Based on the relative change value, determine the initial concentration threshold corresponding to the initial air volume setting by adjusting the first parameter or the second parameter, and adaptively adjust the initial concentration threshold of the setting adjacent to the initial air volume setting, specifically including steps S9 to S11.

[0081] Step S9: Determine whether the relative change value within the second preset time period is not greater than the preset change value.

[0082] The relative change value can be determined multiple times within a second preset time period, and each relative change value can be judged to ensure that it does not exceed the preset change value, thus ensuring the objectivity and accuracy of the concentration change in the environment where the range hood is located. When the relative change value within the second preset time period does not exceed the preset change value, it can be said that the oil fume concentration in the environment where the range hood is located is relatively stable. When the relative change value within the second preset time period exceeds the preset change value, it can be said that the oil fume concentration in the environment where the range hood is located fluctuates significantly.

[0083] The specific values ​​of the aforementioned second preset time and preset change value can be determined according to the actual usage. Specifically, the second preset time can be 5 seconds, 6 seconds, 7 seconds, 8 seconds, etc., and the preset change value can be 2%, 3%, 4%, 5%, etc. This application does not make specific limitations on these.

[0084] For example, with a preset change value of 3% and a second preset time of 8 seconds, the preset change value corresponding to 8 seconds can be determined within 10 seconds, and it can be determined whether the 8 relative change values ​​are not greater than 3% respectively.

[0085] Step S10: If yes, adjust the initial concentration threshold corresponding to the initial airflow level with the first parameter, and adaptively adjust the initial concentration threshold of the levels adjacent to the initial airflow level.

[0086] For example, when the first parameter can be 5% and the initial concentration threshold corresponding to the second setting is 30%-60%, if the relative change value within the second preset time is less than or equal to the preset change value, it indicates that the oil fume concentration in the environment where the range hood is currently located is relatively stable. At this time, the range of the left endpoint of the initial concentration threshold can be adjusted from 30% to 25%, and the range of the right endpoint of the initial concentration threshold can be adjusted from 60% to 65%, that is, the corrected concentration threshold is 25%-65%. By expanding the initial concentration threshold of the range hood to the corrected concentration threshold, the range hood can meet the suction and exhaust needs while avoiding frequent adjustments to the suction and exhaust air volume, thereby avoiding frequent adjustments to the range hood's speed or different cross-sectional areas of the suction inlet. This reduces the energy consumption of the range hood and also extends its service life. At the same time, the corrected concentration threshold corresponding to the first setting adjacent to the second setting can be adjusted to 0%-25%, and the corrected concentration threshold corresponding to the third setting adjacent to the second setting can be adjusted to 65%-100%.

[0087] Step S11: If not, adjust the initial concentration threshold corresponding to the initial airflow level with the second parameter, and adaptively adjust the initial concentration threshold of the levels adjacent to the initial airflow level.

[0088] For example, when the second parameter can be 2% and the initial concentration threshold corresponding to the second setting is 30%-60%, if the relative change value within the second preset time is greater than or equal to the preset change value, it indicates that the oil fume concentration in the environment where the range hood is currently located is fluctuating significantly. It may be necessary to adjust the range hood's suction and exhaust volume to meet usage needs. The range of the left endpoint of the initial concentration threshold can be adjusted from 30% to 28%, and the range of the right endpoint of the initial concentration threshold can be adjusted from 60% to 62%, i.e., the corrected concentration threshold is 28%-62%. By expanding the initial concentration threshold of the range hood to a corrected concentration threshold, while not affecting the range hood's ability to adjust its suction and exhaust volume according to the corrected concentration threshold, it also avoids frequent adjustments to the range hood's suction and exhaust volume under small concentration fluctuations. This avoids frequent adjustments to the range hood's rotation speed or different cross-sectional areas of the smoke inlet, thus reducing energy consumption and extending the range hood's lifespan. At the same time, the correction concentration threshold corresponding to the first gear adjacent to the second gear can be adjusted to 0%-28%, and the correction concentration threshold corresponding to the third gear adjacent to the second gear can be adjusted to 62%-100%.

[0089] In the above embodiments, the relative change value between the first and second oil fume concentration information can be determined based on the first and second oil fume concentration information. Based on the comparison between the relative change value and a preset change value, the range hood can be controlled to operate at different speeds. Specifically, when the relative change value is less than or equal to the preset change value within a second preset time period, the range of the initial concentration threshold can be expanded based on the first parameter to obtain a corrected concentration threshold. This ensures that the range hood meets its suction and exhaust needs while avoiding frequent adjustments to its suction and exhaust airflow, thus guaranteeing overall operational stability. When the relative change value is greater than the preset change value within the second preset time period, the range of the initial concentration threshold can be expanded based on the second parameter to obtain a corrected concentration threshold. This ensures that the range hood can adjust its suction and exhaust airflow according to the corrected concentration threshold without affecting its ability to do so. It also avoids frequent adjustments to the suction and exhaust airflow under slight concentration fluctuations. This effectively reduces the range hood's energy consumption, extends its service life, and meets different suction and exhaust needs, effectively improving the range hood's practicality and flexibility.

[0090] In some embodiments, Figure 4 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 4 .like Figure 4 As shown, the airflow levels include a first level, a second level, and a third level, which are progressively advanced and correspond to the first initial threshold, the second initial threshold, and the third initial threshold, respectively. Step S10: Adjust the initial concentration threshold corresponding to the initial airflow level with the first parameter, and adaptively adjust the initial concentration threshold of the level adjacent to the initial airflow level. Specifically, this includes steps S12 to S14.

[0091] The first initial threshold, the second initial threshold, and the third initial threshold can be represented as different concentration ranges in the initial concentration threshold of the range hood. For example, the first initial threshold can be 0%-30%, the second initial threshold can be 30%-60%, and the third initial threshold can be 60%-100%.

[0092] The concentration correction threshold can include a first correction threshold, a second correction threshold, and a third correction threshold that are progressively adjusted. The first initial threshold of the first level can be adjusted by the first parameter to obtain the first correction threshold of the first level. Similarly, the second initial threshold of the second level can be adjusted by the first parameter to obtain the second correction threshold of the second level. The third initial threshold of the third level can be adjusted by the first parameter to obtain the third correction threshold of the third level.

[0093] The low setting corresponds to the first gear, the medium setting to the second gear, and the high setting to the third gear. It's understandable that the airflow increases sequentially from the first to the third gear.

[0094] Step S12: When the initial airflow level is the first level, increase the maximum value of the first initial threshold by the first parameter, and use this value as the minimum value of the second initial threshold corresponding to the middle level.

[0095] For example, when the first parameter is 5%, the maximum value of the first initial threshold of 30% can be increased to 35%, and the resulting first correction threshold is 0%-35%, and the second correction threshold of the second level is 35%-60%. It can be understood that the third initial threshold of the third level has not changed, so the third correction threshold of the third level is still 60%-100%.

[0096] Step S13: When the initial airflow level is the second level, decrease the minimum value of the second initial threshold with the first parameter, and use this value as the maximum value of the first initial threshold corresponding to the low level; increase the maximum value of the second initial threshold with the first parameter, and use this value as the minimum value of the third initial threshold corresponding to the high level.

[0097] For example, when the first parameter is 5%, the minimum value of the second initial threshold of 30% can be reduced to 25%, and the maximum value of the second initial threshold of 60% can be increased to 65%. The resulting second corrected threshold is 25%-65%, and the corresponding first corrected threshold is 0%-25%, and the third corrected threshold is 65%-100%.

[0098] Step S14: When the initial airflow level is the third level, reduce the minimum value of the third initial threshold by the first parameter, and use this value as the maximum value of the second initial threshold corresponding to the middle level.

[0099] For example, when the first parameter is 5%, the minimum value of the third initial threshold can be reduced from 60% to 55%, and the resulting third corrected threshold is 55%-100%. Correspondingly, the second corrected threshold is 30%-55%. It can be understood that the first initial threshold of the first gear has not changed, so the first corrected threshold of the first gear is still 0%-30%.

[0100] In the above embodiments, the initial threshold corresponding to the airflow level and the initial concentration threshold of the adjacent level can be adjusted based on the first parameter to obtain the corrected concentration threshold corresponding to the airflow level. Based on the second oil fume concentration information, the corresponding range in the corrected concentration threshold can be accurately found, and the airflow level can be adjusted in a timely manner so that the suction and exhaust airflow of the oil fume can be adapted to the oil fume concentration of its environment, effectively improving the suction and exhaust effect and efficiency of the range hood.

[0101] In some embodiments, Figure 5A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 5 .like Figure 5 As shown, the airflow levels include a first level, a second level, and a third level that are progressively advanced, corresponding to a first initial threshold, a second initial threshold, and a third initial threshold, respectively. Step S11: Adjust the initial concentration threshold corresponding to the initial airflow level with the second parameter, and adaptively adjust the initial concentration threshold of the level adjacent to the initial airflow level, specifically including steps S15 to S17.

[0102] The corrected concentration threshold can include a first corrected threshold, a second corrected threshold, and a third corrected threshold that are progressively adjusted. The first initial threshold of the first level can be adjusted by the second parameter to obtain the first corrected threshold of the first level. Similarly, the second initial threshold of the second level can be adjusted by the second parameter to obtain the second corrected threshold of the second level. The third initial threshold of the third level can be adjusted by the second parameter to obtain the third corrected threshold of the third level.

[0103] The low setting corresponds to the first gear, the medium setting to the second gear, and the high setting to the third gear. It's understandable that the airflow increases sequentially from the first to the third gear.

[0104] Step S15: When the initial airflow level is the first level, increase the maximum value of the first initial threshold by the second parameter, and use this value as the minimum value of the second initial threshold corresponding to the middle level.

[0105] Specifically, Figure 6 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 6 , Figure 18 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 8. For example Figure 6 and Figure 18 As shown, step S15 includes sub-steps S151 to S153. Sub-step S151: Increase the maximum value of the first initial threshold according to the second parameter. Sub-step S152: Increase the minimum value of the second initial threshold according to the second parameter. Sub-step S153: Maintain the endpoint value of the third initial threshold. For example, when the second parameter is 2%, the maximum value of the first initial threshold can be increased from 30% to 32%, resulting in a first corrected threshold of 0%-32%, and a second corrected threshold of 32%-60% for the second tier. It can be understood that the third initial threshold for the third tier remains unchanged, so the third corrected threshold for the third tier is still 60%-100%.

[0106] Step S16: When the initial airflow level is the second level, decrease the minimum value of the second initial threshold with the second parameter, and use this value as the maximum value of the first initial threshold corresponding to the low level; increase the maximum value of the second initial threshold with the first parameter, and use this value as the minimum value of the third initial threshold corresponding to the high level.

[0107] Specifically, Figure 7 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 7 , Figure 19 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 9. For example Figure 7 and Figure 19 As shown, step S16 includes sub-steps S161 to S163. Sub-step S161: Decrease the maximum value of the first initial threshold according to the second parameter. Sub-step S162: Decrease the minimum value of the second initial threshold according to the second parameter, and increase the maximum value of the second initial threshold. Sub-step S163: Increase the minimum value of the third initial threshold according to the second parameter. For example, taking the second parameter as 2%, the minimum value of the second initial threshold can be reduced from 30% to 28%, and the maximum value of the second initial threshold can be increased from 60% to 62%, resulting in a second corrected threshold of 28%-62%, and correspondingly, a first corrected threshold of 0%-28% and a third corrected threshold of 62%-100%.

[0108] Step S17: When the initial airflow level is the third level, reduce the minimum value of the third initial threshold by the second parameter, and use this value as the maximum value of the second initial threshold corresponding to the middle level.

[0109] Specifically, Figure 8 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 8 , Figure 20 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 2 10. For example Figure 8 and Figure 20 As shown, step S17 includes sub-steps S171 to S173. Sub-step S171: Maintain the endpoint value of the first initial threshold. Sub-step S172: Reduce the maximum value of the second initial threshold according to the second parameter. Sub-step S173: Reduce the minimum value of the third initial threshold according to the second parameter. For example, when the second parameter is 2%, the minimum value of the third initial threshold can be reduced from 60% to 58%, resulting in a third corrected threshold of 58%-100%, and correspondingly, the second corrected threshold can be adjusted to 30%-58%. It can be understood that the first initial threshold of the first level has not changed, so the first corrected threshold of the first level is still 0%-30%.

[0110] In the above embodiments, the initial threshold corresponding to the airflow level and the initial concentration threshold of the adjacent level can be adjusted based on the second parameter to obtain the corrected concentration threshold corresponding to the airflow level. Based on the second oil fume concentration information, the corresponding range in the corrected concentration threshold can be accurately found, and the airflow level can be adjusted in a timely manner. In this way, while the range hood meets the suction and exhaust needs, it can also avoid frequent adjustments to the suction and exhaust airflow of the range hood, effectively improving the overall operational stability of the range hood.

[0111] In some embodiments, Figure 9 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 9 .like Figure 9 As shown, step S5: Determine the corrected airflow level to match the range hood based on the second oil fume concentration information and the corrected concentration threshold corresponding to each airflow level, specifically including steps S18 and S19.

[0112] Step S18: When the initial airflow level is the first level, compare the second oil fume concentration information with the correction concentration threshold corresponding to each airflow level.

[0113] When the range hood is operating at the first setting, it can be determined that the second oil fume concentration information is within one of the three thresholds: the first correction threshold, the second correction threshold, and the third correction threshold.

[0114] Step S19: If the second oil fume concentration information is at the correction concentration threshold corresponding to the first level, then the correction airflow level matched with the range hood is determined to be the first level; if the second oil fume concentration information is not at the correction concentration threshold corresponding to the first level, then the correction airflow level matched with the range hood is determined to be the second level.

[0115] Specifically, Figure 10 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 .like Figure 10 and Figure 18 As shown, step S19 may include sub-steps S191 to S193. Sub-step S191: If the second oil fume concentration information is within the first correction threshold corresponding to the first setting, control the range hood to operate at the first setting. Sub-step S192: If the second oil fume concentration information is within the second correction threshold corresponding to the second setting, control the range hood to operate at the second setting. Sub-step S193: If the second oil fume concentration information is within the third correction threshold corresponding to the third setting, control the range hood to operate at the third setting.

[0116] In the above embodiments, when the initial airflow setting of the range hood is the first setting, the range hood can be controlled to operate at the first setting or the second setting based on the specific range of the second oil fume concentration information within the correction concentration threshold. This allows the airflow of the range hood to be adapted to the oil fume concentration of its environment, effectively improving the range hood's suction and exhaust effect and efficiency.

[0117] In some embodiments, Figure 11 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 1. For example Figure 11 and Figure 18 As shown, if the second oil fume concentration information is within the first correction threshold corresponding to the first setting, and the range hood is operating at the first setting, the range hood control method further includes steps S24 to S26. Step S24: Determine whether the second oil fume concentration is within the first correction threshold within a fifth preset time period. Step S25: If yes, control the range hood to operate at the second setting. Step S26: Otherwise, control the range hood to operate at the first setting.

[0118] The aforementioned fifth preset time can specifically be 3 seconds, 5 seconds, 7 seconds, etc. For example, taking a fifth preset time of 5 seconds, if the second oil fume concentration information is not within the first correction threshold for 5 consecutive seconds, it can be determined that the oil fume concentration in the environment where the range hood is located is continuously increasing. Conversely, if the second oil fume concentration information is within the first correction threshold for 5 consecutive seconds, it can be determined that the oil fume concentration in the environment where the range hood is located is relatively stable or decreasing. This allows for prediction of whether the oil fume concentration in the environment where the range hood is located has an increasing trend. Based on this trend, the range hood's airflow can be adjusted accordingly, avoiding the lag in adjusting the range hood's airflow and effectively improving the practicality and flexibility of the range hood control method.

[0119] In some embodiments, Figure 12 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 2. For example Figure 12 As shown, step S5: Determine the corrected airflow level to match the range hood based on the second oil fume concentration information and the corrected concentration threshold corresponding to each airflow level, specifically including steps S20 and S21.

[0120] Step S20: When the initial airflow level is the second level, compare the second oil fume concentration information with the correction concentration threshold corresponding to each airflow level.

[0121] When the range hood is operating at the second setting, it can be determined that the second oil fume concentration information is within one of the three thresholds: the first correction threshold, the second correction threshold, and the third correction threshold.

[0122] Step S21: If the second oil fume concentration information is at the correction concentration threshold corresponding to the first level, then the correction airflow level matched with the range hood is determined to be the first level; if the second oil fume concentration information is at the correction concentration threshold corresponding to the second level, then the correction airflow level matched with the range hood is determined to be the second level; if the second oil fume concentration information is at the correction concentration threshold corresponding to the third level, then the correction airflow level matched with the range hood is determined to be the third level.

[0123] Specifically, Figure 13 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 Three. For example... Figure 13 and Figure 19 As shown, step S21 may include sub-steps S211 to S213. Sub-step S211: If the second oil fume concentration information is within the first correction threshold corresponding to the first setting, control the range hood to operate at the first setting. Sub-step S212: If the second oil fume concentration information is within the second correction threshold corresponding to the second setting, control the range hood to operate at the second setting. Sub-step S213: If the second oil fume concentration information is within the third correction threshold corresponding to the third setting, control the range hood to operate at the third setting.

[0124] In the above embodiments, when the initial airflow setting of the range hood is the second setting, the range hood can be flexibly switched between the first, second, and third settings based on the specific range of the second oil fume concentration information within the correction concentration threshold. This allows the range hood's suction and exhaust airflow to be adapted to the oil fume concentration of its environment, ensuring the range hood's suction and exhaust effect and efficiency while also reducing its energy consumption.

[0125] In some embodiments, Figure 14 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 IV. For example Figure 14 and Figure 19 As shown, if the second oil fume concentration information is within the second correction threshold corresponding to the second setting, and the range hood is operating at the second setting, the range hood control method further includes steps S27 to S29. Step S27: Determine whether the second oil fume concentration is within the first correction threshold within a sixth preset time period; if so, control the range hood to operate at the first setting. Step S28: Determine whether the second oil fume concentration is within the second correction threshold within a sixth preset time period; if so, control the range hood to operate at the second setting. Step S29: Determine whether the second oil fume concentration is within the third correction threshold within a sixth preset time period; if so, control the range hood to operate at the third setting.

[0126] The aforementioned sixth preset time can specifically be 3 seconds, 5 seconds, 7 seconds, etc. For example, taking a sixth preset time of 5 seconds, if the second oil fume concentration information is within the first correction threshold for 5 consecutive seconds, it can be determined that the oil fume concentration in the environment where the range hood is located is continuously decreasing. If the second oil fume concentration information is within the second correction threshold for 5 consecutive seconds, it can be determined that the oil fume concentration in the environment where the range hood is located is relatively stable. If the second oil fume concentration information is within the third correction threshold for 5 consecutive seconds, it can be determined that the oil fume concentration in the environment where the range hood is located is continuously increasing. This allows for prediction of whether the oil fume concentration in the environment where the range hood is located has a trend of increasing or decreasing. Based on this trend, the range hood's airflow can be adjusted accordingly, avoiding the lag in adjusting the range hood's airflow and effectively improving the practicality and flexibility of the range hood control method.

[0127] In some embodiments, Figure 15 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 5. For example Figure 15 As shown, step S5: Determine the corrected airflow level to match the range hood based on the second oil fume concentration information and the corrected concentration threshold corresponding to each airflow level, specifically including steps S22 and S23.

[0128] Step S22: When the initial airflow level is the third level, compare the second oil fume concentration information with the correction concentration threshold corresponding to each airflow level.

[0129] When the range hood is operating at the third setting, it can be determined that the second oil fume concentration information is within one of the three correction thresholds: the first correction threshold, the second correction threshold, and the third correction threshold.

[0130] Step S23: If the second oil fume concentration information is at the correction concentration threshold corresponding to the third level, then the correction airflow level matched with the range hood is determined to be the third level; if the second oil fume concentration information is not at the correction concentration threshold corresponding to the third level, then the correction airflow level matched with the range hood is determined to be the second level.

[0131] Specifically, Figure 16 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 6. For example Figure 16 and Figure 20As shown, step S23 may include sub-steps S231 to S233. Sub-step S231: If the second oil fume concentration information is within the first correction threshold corresponding to the first setting, control the range hood to operate at the first setting. Sub-step S232: If the second oil fume concentration information is within the second correction threshold corresponding to the second setting, control the range hood to operate at the second setting. Sub-step S233: If the second oil fume concentration information is within the third correction threshold corresponding to the third setting, control the range hood to operate at the third setting.

[0132] In the above embodiments, when the initial airflow setting of the range hood is the third setting, the range hood can be controlled to operate at the third or second setting based on the specific range of the second oil fume concentration information within the correction concentration threshold. This allows the range hood's suction and exhaust airflow to be adapted to the oil fume concentration of its environment, ensuring the range hood's suction and exhaust effect and efficiency while also reducing its energy consumption.

[0133] In some embodiments, Figure 17 A schematic flowchart of a range hood control method according to an embodiment of the present invention is shown. Figure 10 7. For example Figure 17 and Figure 20 As shown, if the second oil fume concentration information is within the third correction threshold corresponding to the third setting, and the range hood is operating at the third setting, the range hood control method further includes steps S30 to S32. Step S30: Determine whether the second oil fume concentration is within the third correction threshold within a seventh preset time period. Step S31: If yes, control the range hood to operate at the second setting. Step S32: Otherwise, control the range hood to continue operating at the third setting.

[0134] The aforementioned seventh preset time can specifically be 3 seconds, 5 seconds, 7 seconds, etc. For example, taking a seventh preset time of 5 seconds, if the second oil fume concentration information is not within the third correction threshold for 5 consecutive seconds, it can be determined that the oil fume concentration in the environment where the range hood is located is continuously decreasing. Conversely, if the second oil fume concentration information is within the third correction threshold for 5 consecutive seconds, it can be determined that the oil fume concentration in the environment where the range hood is located is relatively stable or is continuously increasing. This allows for prediction of whether the oil fume concentration in the environment where the range hood is located has a decreasing trend. Based on this trend, the range hood's airflow can be adjusted accordingly, avoiding the lag in adjusting the range hood's airflow and effectively improving the practicality and flexibility of the range hood control method.

[0135] In some embodiments, step S6: after controlling the range hood to operate at the corrected airflow level for a first preset time, updating the second oil fume concentration information of the environment where the range hood is located, specifically includes: after controlling the range hood to operate at the corrected airflow level, updating the second oil fume concentration information of the environment where the range hood is located, so as to dynamically adjust the threshold range corresponding to the initial airflow level based on the updated second oil fume concentration information and the first oil fume concentration information.

[0136] In the above embodiments, after the range hood has been operating at the corrected airflow setting for a first preset time, the second oil fume concentration information of the environment where the range hood is located can be periodically determined, and the above steps S4 to S6 can be repeated to determine whether the setting of the range hood can meet the current usage requirements, effectively ensuring the accuracy and real-time performance of the range hood control method results.

[0137] In some embodiments, determining the first oil fume concentration information of the environment where the range hood is located specifically includes: acquiring multiple oil fume concentration values ​​within a third preset time period, and determining the average value of the multiple oil fume concentration values ​​as the first oil fume concentration information; and / or, determining the second oil fume concentration information of the environment where the range hood is located specifically includes: acquiring multiple oil fume concentration values ​​within a fourth preset time period, and determining the average value of the multiple oil fume concentration values ​​as the second oil fume concentration information.

[0138] The aforementioned third preset time can specifically be 3 seconds, 5 seconds, 10 seconds, etc. For example, taking a third preset time of 5 seconds, five oil fume concentration values ​​can be obtained within 5 seconds, and the average of these five values ​​can be determined as the first oil fume concentration information. Similarly, the second oil fume concentration information can be determined in the same way as the first oil fume concentration information, and will not be elaborated further here. It is understood that the fourth preset time and the third preset time can be the same or different, and this application does not specifically limit this.

[0139] In the above embodiments, multiple oil fume concentration values ​​can be acquired within a preset time period, and the average value of the multiple oil fume concentration values ​​is determined as the first oil fume concentration information or the second oil fume concentration, which effectively ensures the accuracy and objectivity of the acquisition results of the first oil fume concentration information or the second oil fume concentration, thereby ensuring the accuracy of the range hood control method.

[0140] According to another aspect of the present invention, a range hood is also provided, wherein the air volume is adjusted using the range hood control method described above.

[0141] The range hood of the present invention uses the range hood control method described above. Since the range hood control method described above has the beneficial effects described above, the range hood using the range hood control method described above will also necessarily have the beneficial effects described above.

[0142] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0143] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0144] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0145] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0146] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, those skilled in the art will understand that the present invention is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of the present invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for controlling a range hood, characterized in that, include: S1: Determine the initial oil fume concentration information of the environment where the range hood is located; Obtain multiple airflow settings of the range hood and the initial concentration threshold corresponding to each airflow setting; S2: Determine the initial airflow level of the range hood based on the first oil fume concentration information and the initial concentration threshold corresponding to each airflow level; S3: After controlling the range hood to work at the initial airflow level for a first preset time, determine the second oil fume concentration information of the environment where the range hood is located; S4: Based on the first oil fume concentration information and the second oil fume concentration information, dynamically adjust the threshold range corresponding to the initial airflow level to obtain the corrected concentration threshold corresponding to each airflow level. S5: Determine the corrected airflow level to match the range hood based on the second oil fume concentration information and the corrected concentration threshold corresponding to each airflow level; S6: After controlling the range hood to operate at the corrected airflow level for the first preset time, update the second oil fume concentration information of the environment where the range hood is located; Repeat steps S4 through S6 until the work is finished.

2. The range hood control method according to claim 1, characterized in that, The step of dynamically adjusting the threshold range corresponding to the initial airflow level based on the first and second oil fume concentration information to obtain the corrected concentration threshold for each airflow level specifically includes: Determine the relative change between the first oil fume concentration information and the second oil fume concentration information; Based on the relative change value, the initial concentration threshold corresponding to the initial airflow level is determined by adjusting the first parameter or the second parameter, and the initial concentration threshold of the level adjacent to the initial airflow level is adaptively adjusted to obtain the corrected concentration threshold corresponding to each airflow level.

3. The range hood control method according to claim 2, characterized in that, The step of determining the initial concentration threshold corresponding to the initial airflow level based on the relative change value using a first parameter or a second parameter, and adaptively adjusting the initial concentration threshold of the levels adjacent to the initial airflow level, specifically includes: Determine whether the relative change value within the second preset time period is not greater than a preset change value; If so, adjust the initial concentration threshold corresponding to the initial airflow level with the first parameter, and adaptively adjust the initial concentration threshold of the level adjacent to the initial airflow level. If not, adjust the initial concentration threshold corresponding to the initial airflow setting using the second parameter, and adaptively adjust the initial concentration threshold of the settings adjacent to the initial airflow setting.

4. The range hood control method according to claim 3, characterized in that, The airflow settings include a first setting, a second setting, and a third setting, which are sequentially progressive and correspond to a first initial threshold, a second initial threshold, and a third initial threshold, respectively. The step of adjusting the initial concentration threshold corresponding to the initial airflow setting using the first parameter, and adaptively adjusting the initial concentration threshold of settings adjacent to the initial airflow setting, specifically includes: When the initial airflow setting is the first setting, the first parameter is increased by the maximum value of the first initial threshold, and this value is used as the minimum value of the second initial threshold corresponding to the medium setting. When the initial airflow level is the second level, the minimum value of the second initial threshold is reduced by the first parameter, and this value is used as the maximum value of the first initial threshold corresponding to the low level; the maximum value of the second initial threshold is increased by the first parameter, and this value is used as the minimum value of the third initial threshold corresponding to the high level. When the initial airflow setting is the third setting, the minimum value of the third initial threshold is reduced by the first parameter, and this value is used as the maximum value of the second initial threshold corresponding to the middle setting.

5. The range hood control method according to claim 3, characterized in that, The airflow settings include a first setting, a second setting, and a third setting, which are sequentially progressive and correspond to a first initial threshold, a second initial threshold, and a third initial threshold, respectively. The initial concentration threshold corresponding to the initial airflow setting is adjusted using the second parameter, and the initial concentration thresholds of settings adjacent to the initial airflow setting are adaptively adjusted. Specifically, this includes: When the initial airflow level is the first level, the maximum value of the first initial threshold is increased by the second parameter, and this value is used as the minimum value of the second initial threshold corresponding to the medium level. When the initial airflow level is the second level, the minimum value of the second initial threshold is reduced by the second parameter, and this value is used as the maximum value of the first initial threshold corresponding to the low level; the maximum value of the second initial threshold is increased by the first parameter, and this value is used as the minimum value of the third initial threshold corresponding to the high level. When the initial airflow setting is the third setting, the minimum value of the third initial threshold is reduced by the second parameter, and this value is used as the maximum value of the second initial threshold corresponding to the medium setting.

6. The range hood control method according to claim 4, characterized in that, Based on the second oil fume concentration information and the correction concentration threshold corresponding to each airflow level, the corrected airflow level matched to the range hood is determined, specifically including: When the initial airflow level is the first level, compare the second oil fume concentration information with the correction concentration threshold corresponding to each airflow level; If the second oil fume concentration information is within the correction concentration threshold corresponding to the first setting, then the correction airflow setting matched by the range hood is determined to be the first setting; if the second oil fume concentration information is not within the correction concentration threshold corresponding to the first setting, then the correction airflow setting matched by the range hood is determined to be the second setting.

7. The range hood control method according to claim 4, characterized in that, Based on the second oil fume concentration information and the correction concentration threshold corresponding to each airflow level, the specific methods for determining the corrected airflow level matched to the range hood include: When the initial airflow level is the second level, compare the second oil fume concentration information with the correction concentration threshold corresponding to each airflow level; If the second oil fume concentration information is at the correction concentration threshold corresponding to the first setting, then the correction airflow setting matched by the range hood is determined to be the first setting. If the second oil fume concentration information is at the correction concentration threshold corresponding to the second setting, then the correction airflow setting matched by the range hood is determined to be the second setting. If the second oil fume concentration information is at the correction concentration threshold corresponding to the third setting, then the correction airflow setting matched by the range hood is determined to be the third setting.

8. The range hood control method according to claim 4, characterized in that, Based on the second oil fume concentration information and the correction concentration threshold corresponding to each airflow level, the specific methods for determining the corrected airflow level matched to the range hood include: When the initial airflow level is the third level, compare the second oil fume concentration information with the correction concentration threshold corresponding to each airflow level; If the second oil fume concentration information is within the correction concentration threshold corresponding to the third level, then the correction airflow level matched with the range hood is determined to be the third level; if the second oil fume concentration information is not within the correction concentration threshold corresponding to the third level, then the correction airflow level matched with the range hood is determined to be the second level.

9. The range hood control method according to claim 1, characterized in that, After the range hood is controlled to operate at the corrected airflow level for the first preset time, the second oil fume concentration information of the environment where the range hood is located is updated, specifically including: After controlling the range hood to operate at the corrected airflow level, the second oil fume concentration information of the environment where the range hood is located is updated, so as to dynamically adjust the threshold range corresponding to the initial airflow level based on the updated second oil fume concentration information and the first oil fume concentration information.

10. The range hood control method according to claim 1, characterized in that, The determination of the first oil fume concentration information of the environment where the range hood is located specifically includes: acquiring multiple oil fume concentration values ​​within a third preset time period, and determining the average value of the multiple oil fume concentration values ​​as the first oil fume concentration information; and / or, Determining the second oil fume concentration information of the environment where the range hood is located specifically includes: acquiring multiple oil fume concentration values ​​within a fourth preset time period, and determining the average value of the multiple oil fume concentration values ​​as the second oil fume concentration information.

11. A range hood, characterized in that, The air volume is adjusted using the range hood control method as described in any one of claims 1-10.

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