Air volume control method, device and equipment of range hood and storage medium

Abstract

The invention belongs to the technical field of household appliance control, and particularly relates to an air volume control method, device and equipment of a range hood and a storage medium. The purpose of the invention is to solve the problem of low accuracy of air volume adjustment in the prior art. The method comprises the steps that according to a target range hood gear and the back pressure of the range hood, the range hood is controlled to operate according to the corresponding first air volume. Then, according to multiple first oil smoke concentrations in the cooking environment, first oil smoke concentration gears corresponding to the multiple first oil smoke concentrations are determined; finally, the air volume of the range hood is adjusted according to the second air volume corresponding to the first oil smoke concentration gear. Wherein the target range hood gear is the range hood gear selected by the user on the range hood. According to the technical scheme, the accuracy of air volume adjustment is effectively improved.

Description

Technical Field

[0001] Embodiments of the present disclosure belong to the technical field of household appliance control, and particularly relate to a method, device, equipment and storage medium for controlling the air volume of a range hood. Background Art

[0002] In modern household kitchens, range hoods play an important role among kitchen appliances because they can exhaust a large amount of oil fumes generated during cooking, improve the air quality in the kitchen, and reduce the deposition of oil fumes.

[0003] Currently, a gear button is provided on the control panel of the range hood. The gear button can be a push type, a touch type or a rotary type. Users can manually adjust the gear button according to the actual oil fumes generated during cooking to adjust the range hood gear and thus adjust the air volume of the range hood.

[0004] However, the existing air volume adjustment method has the problem of low accuracy. Summary of the Invention

[0005] To solve the above problems in the prior art, that is, to solve the problem of low accuracy in air volume adjustment in the prior art, embodiments of the present disclosure provide a method, device, equipment and storage medium for controlling the air volume of a range hood.

[0006] In a first aspect, embodiments of the present disclosure provide a method for controlling the air volume of a range hood, including:

[0007] Controlling the range hood to operate according to a corresponding first air volume according to a target range hood gear and the back pressure of the range hood, where the target range hood gear is the range hood gear selected by the user on the range hood;

[0008] Determining a first oil fume concentration gear corresponding to the plurality of first oil fume concentrations in the cooking environment;

[0009] Adjusting the air volume of the range hood according to a second air volume corresponding to the first oil fume concentration gear.

[0010] In a possible design, adjusting the air volume of the range hood according to a second air volume corresponding to the first oil fume concentration gear includes:

[0011] Adjusting the air volume of the range hood from the first air volume to the second air volume.

[0012] In a possible design, the method further includes:

[0013] Starting timing and obtaining a first cumulative duration;

[0014] Determine second oil fume concentration levels corresponding to multiple second oil fume concentrations in the cooking environment;

[0015] If the first cumulative duration obtained by timing is less than the first preset duration, and the second oil fume concentration level is greater than the first oil fume concentration level, then adjust the air volume of the range hood from the second air volume to the third air volume corresponding to the second oil fume concentration level; wherein, the oil fume concentration level is correlated with the air volume;

[0016] If the first cumulative duration is less than the first preset duration, and the second oil fume concentration level is equal to the first oil fume concentration level, then start timing again and obtain the first cumulative duration again;

[0017] If the first cumulative duration is equal to or greater than the first preset duration, then adjust the air volume of the range hood from the second air volume to the first air volume.

[0018] In a possible design, when the first oil fume concentration level is the highest oil fume concentration level of the range hood, after the step of if the first cumulative duration is equal to or greater than the first preset duration, then adjust the air volume of the range hood from the second air volume to the first air volume, the method further includes:

[0019] Start timing and obtain a second cumulative duration;

[0020] Determine third oil fume concentration levels corresponding to multiple third oil fume concentrations in the cooking environment;

[0021] If the second cumulative duration obtained by timing is less than the second preset duration, and the third oil fume concentration level is equal to the first oil fume concentration level, then start timing again;

[0022] If the second cumulative duration is equal to or greater than the second preset duration, then adjust the air volume of the range hood from the first air volume to the fourth air volume corresponding to the third oil fume concentration level.

[0023] In a possible design, the step of determining the first oil fume concentration levels corresponding to the multiple first oil fume concentrations in the cooking environment includes:

[0024] Subtract the background noise from each first oil fume concentration to obtain a fourth oil fume concentration;

[0025] Determine the first oil fume concentration levels according to the multiple fourth oil fume concentrations and the oil fume concentration intervals corresponding to each oil fume concentration level.

[0026] In a possible design, determining a first oil fume concentration level based on multiple fourth oil fume concentrations and the oil fume concentration range corresponding to each oil fume concentration level includes:

[0027] After the number of fourth oil fume concentrations reaches a first preset quantity, determining the average value of the first preset quantity of fourth oil fume concentrations as the fifth oil fume concentration;

[0028] After the number of fifth oil fume concentrations reaches a second preset quantity, for the oil fume concentration range corresponding to each oil fume concentration level, determining the target number of the second preset quantity of fifth oil fume concentrations that fall within the oil fume concentration range;

[0029] Determining the oil fume concentration level with the highest rank among the oil fume concentration levels where the target number is greater than a third preset quantity as the first oil fume concentration level.

[0030] In a second aspect, an air volume control device for a range hood provided by an embodiment of the present disclosure includes:

[0031] A control module, configured to control the range hood to operate at a corresponding first air volume according to a target range hood level and the back pressure of the range hood, where the target range hood level is the range hood level selected by a user on the range hood;

[0032] A determination module, configured to determine a first oil fume concentration level corresponding to the multiple first oil fume concentrations in a cooking environment;

[0033] An adjustment module, configured to adjust the air volume of the range hood according to a second air volume corresponding to the first oil fume concentration level.

[0034] In a possible design, the adjustment module is specifically configured to:

[0035] Adjust the air volume of the range hood from the first air volume to the second air volume.

[0036] In a possible design, the air volume control device of the range hood further includes:

[0037] A timing module, configured to start timing and obtain a first cumulative duration;

[0038] The determination module is further configured to determine a second oil fume concentration level corresponding to multiple second oil fume concentrations in a cooking environment;

[0039] The adjustment module is further configured to, if the first cumulative duration obtained by timing is less than the first preset duration and the second oil fume concentration level is greater than the first oil fume concentration level, adjust the air volume of the range hood from the second air volume to the third air volume corresponding to the second oil fume concentration level; wherein, the oil fume concentration level is correlated with the air volume.

[0040] The timing module is further configured to, if the first cumulative duration is less than the first preset duration and the second oil fume concentration level is equal to the first oil fume concentration level, restart timing and re-obtain the first cumulative duration.

[0041] The adjustment module is further configured to, if the first cumulative duration is equal to or greater than the first preset duration, adjust the air volume of the range hood from the second air volume to the first air volume.

[0042] In a possible design, when the first oil fume concentration level is the highest oil fume concentration level of the range hood, after the step of, if the first cumulative duration is equal to or greater than the first preset duration, adjusting the air volume of the range hood from the second air volume to the first air volume, the timing module is further configured to start timing and obtain a second cumulative duration.

[0043] The determination module is further configured to determine third oil fume concentration levels corresponding to multiple third oil fume concentrations in the cooking environment.

[0044] The timing module is further configured to, if the second cumulative duration obtained by timing is less than the second preset duration and the third oil fume concentration level is equal to the first oil fume concentration level, restart timing.

[0045] The adjustment module is further configured to, if the second cumulative duration is equal to or greater than the second preset duration, adjust the air volume of the range hood from the first air volume to the fourth air volume corresponding to the third oil fume concentration level.

[0046] In a possible design, the determination module is specifically configured to:

[0047] Subtract the background noise from each first oil fume concentration to obtain a fourth oil fume concentration;

[0048] Determine the first oil fume concentration level according to multiple fourth oil fume concentrations and the oil fume concentration interval corresponding to each oil fume concentration level.

[0049] In a possible design, the determination module is specifically configured to:

[0050] After the number of fourth oil fume concentrations reaches the first preset quantity, determine the average value of the first preset quantity of fourth oil fume concentrations as the fifth oil fume concentration.

[0051] After the number of fifth oil fume concentrations reaches the second preset quantity, for each oil fume concentration range corresponding to an oil fume concentration level, determine the target number of the second preset quantity of fifth oil fume concentrations that fall within the oil fume concentration range;

[0052] Among the oil fume concentration levels where the target number is greater than the third preset quantity, determine the oil fume concentration level with the highest rank as the first oil fume concentration level.

[0053] In a third aspect, an embodiment of the present disclosure provides an electronic device, including: a processor, a memory, and computer program instructions stored on the memory and executable on the processor. When the processor executes the computer program instructions, it is used to implement the methods provided by the first aspect and all possible designs.

[0054] In a fourth aspect, an embodiment of the present disclosure may provide a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the methods provided by the first aspect and all possible designs.

[0055] In a fifth aspect, an embodiment of the present disclosure provides a computer program product, including a computer program. When the computer program is executed by a processor, it is used to implement the methods provided by the first aspect and all possible designs.

[0056] Those skilled in the art can understand that for the air volume control method, device, equipment, and storage medium of the range hood provided by the embodiments of the present disclosure, in this method, according to the target range hood level and the back pressure of the range hood, control the range hood to operate according to the corresponding first air volume. Then, according to multiple first oil fume concentrations in the cooking environment, determine the first oil fume concentration levels corresponding to the multiple first oil fume concentrations. Finally, adjust the air volume of the range hood according to the second air volume corresponding to the first oil fume concentration level. Among them, the target range hood level is the range hood level selected by the user on the range hood. In this technical solution, after the user selects the target range hood level, determine the first air volume in combination with the back pressure of the range hood, and when controlling the range hood to operate at the first air volume, adjust the air volume of the range hood again by detecting multiple first oil fume concentrations in the user's cooking environment. Through the above two adjustment processes, the accuracy of air volume adjustment is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0058] Figure 1Schematic flowchart of the first embodiment of the air volume control method for the range hood provided by the embodiments of the present disclosure;

[0059] Figure 2 Schematic structural diagram of the oil fume concentration detection module provided by the embodiments of the present disclosure;

[0060] Figure 3 Schematic flowchart of the second embodiment of the air volume control method for the range hood provided by the embodiments of the present disclosure;

[0061] Figure 4 Schematic flowchart of the third embodiment of the air volume control method for the range hood provided by the embodiments of the present disclosure;

[0062] Figure 5 Schematic flowchart of the fourth embodiment of the air volume control method for the range hood provided by the embodiments of the present disclosure;

[0063] Figure 6 Schematic flowchart of the fifth embodiment of the air volume control method for the range hood provided by the embodiments of the present disclosure;

[0064] Figure 7 Schematic structural diagram of the air volume control device for the range hood provided by the embodiments of the present disclosure;

[0065] Figure 8 Schematic structural diagram of the electronic device provided by the embodiments of the present disclosure.

[0066] Through the above-mentioned drawings, the specific embodiments of the present disclosure have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present disclosure in any way, but to illustrate the concept of the present disclosure to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0067] First of all, those skilled in the art should understand that these implementation manners are only used to explain the technical principles of the present disclosure and are not intended to limit the protection scope of the present disclosure. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0068] Secondly, it should be noted that in the description of the embodiments of the present disclosure, the terms indicating the direction or positional relationship such as "inside" and "outside" are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present disclosure.

[0069] In addition, it should be noted that in the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0070] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are some but not all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0071] Before introducing the embodiments of the present disclosure, first, the application background of the embodiments of the present disclosure will be explained:

[0072] In modern household kitchens, range hoods play an important role. Range hoods can exhaust a large amount of oil fumes generated during cooking, improve the air quality in the kitchen, protect the physical health of family members, reduce the deposition of oil fumes, ensure the comfort and cleanliness of the kitchen environment. At the same time, range hoods can significantly reduce the accumulation of grease in the cooking area, reduce the fire hazard, and improve the safety of the kitchen.

[0073] In actual applications, the amount of oil fumes generated in different cooking scenarios is different. For example, the amount of oil fumes generated during stewing is small, while the amount of oil fumes generated during stir-frying is large. Therefore, during actual use, it is necessary to adjust the speed setting of the range hood according to the amount of oil fumes in the cooking environment.

[0074] Currently, speed setting buttons are provided on the control panel of the range hood. The speed setting buttons can be push-button type, touch-control type, or rotary type. Users can manually adjust the speed setting buttons according to the actual oil fumes generated during cooking to adjust the speed setting of the range hood and thus adjust the air volume of the range hood.

[0075] However, in the above method, the air volume corresponding to each speed setting of the range hood is pre-configured by relevant staff before the range hood leaves the factory. However, during the actual use of the range hood, the installation environment has a great influence on the air volume requirement. Only adjusting the air volume according to the speed setting of the range hood selected by the user has the problem of low adjustment accuracy.

[0076] In view of the above problems, the inventor found during the research on the range hood that under the same oil fume concentration, different back pressures result in different air volume requirements for the range hood. Therefore, after the user selects the range hood gear, the air volume of the range hood at this range hood gear can be adjusted according to the back pressure of the range hood, thereby improving the accuracy of air volume adjustment.

[0077] Next, the technical solutions of the present disclosure will be described in detail through specific embodiments.

[0078] It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0079] Figure 1 It is a schematic flowchart of the first embodiment of the air volume control method for the range hood provided by the embodiments of the present disclosure. As Figure 1 shown, the air volume control method of the range hood may include the following steps:

[0080] S11. According to the target range hood gear and the back pressure of the range hood, control the range hood to operate according to the corresponding first air volume.

[0081] The execution subject of the embodiments of the present disclosure is an electronic device, which may be a terminal device, such as a mobile phone, a tablet computer, a laptop computer, etc., may be a server, or may be a range hood. In practical applications, whether the electronic device is specifically a terminal device, a server, or a range hood can be determined according to the actual situation, and the present disclosure does not specifically limit this.

[0082] In this step, the electronic device and the range hood can communicate in a wired or wireless manner to obtain relevant information of the range hood. When the user is cooking, the user can manually select the target range hood gear required on the range hood, that is, the target range hood gear is the range hood gear selected by the user on the range hood. The electronic device obtains the target range hood gear through communication interaction with the range hood.

[0083] In a possible implementation manner, a mapping relationship among the range hood gear, the back pressure range, and the air volume gear is pre-stored in the electronic device, and the corresponding air volume gear can be determined from the above mapping relationship according to the target range hood gear and the back pressure of the range hood, and then the air volume corresponding to this air volume gear is determined.

[0084] Exemplarily, the mapping relationship among the range hood gear, the back pressure range, and the air volume gear can be exemplarily described by Table 1.

[0085] Table 1

[0086] In a possible implementation, when the target range hood gear determined by the user for the first time is stewing, the 8th gear can be determined as the air volume gear corresponding to stewing, and the range hood can be controlled to operate at the 8th gear air volume; when the target range hood gear determined by the user for the first time is intelligent air, the 12th gear can be determined as the air volume gear corresponding to intelligent air, and the range hood can be controlled to operate at the 12th gear air volume; when the target range hood gear determined by the user for the first time is stir-frying, the 14th gear can be determined as the air volume gear corresponding to stir-frying, and the range hood can be controlled to operate at the 14th gear air volume. After that, during the operation, the back pressure of the range hood can be collected, and the air volume gear can be adjusted in combination with the target range hood gear.

[0087] Optionally, the air volume gears corresponding to the above-mentioned range hood gears can be stored, and the air volume gear stored last time can be called during the next cooking.

[0088] It should be understood that different air volume gears correspond to different air volumes.

[0089] S12. Determine the first oil fume concentration gears corresponding to multiple first oil fume concentrations in the cooking environment.

[0090] In this step, an oil fume concentration detection module is provided at the volute of the range hood for collecting the oil fume concentration generated during the user's cooking process. The specific structure of the oil fume concentration detection module can be as Figure 2 shown.

[0091] Figure 2 It is a schematic structural diagram of the oil fume concentration detection module provided by an embodiment of the present disclosure. As Figure 2 shown, the oil fume concentration detection module includes: a connection line 101, a rear cover 102, a metal shielding cover 103, a printed circuit board (PCBA) 104, an infrared emitter 105, an infrared receiver 106, a main structural member 107, a convex lens 108, a light-transmitting hole bracket 109, a protective lens 110, a light guide bracket 111, an oil-proof grille 112, an oil-proof grille 113, and a fixed base 114.

[0092] Among them, the convex lens 108 is installed on the optical path where the infrared receiver 106 and the infrared emitter 105 are located, helping to concentrate and focus the infrared rays emitted by the infrared emitter 105, making it easier to be received by the infrared receiver 106, thereby improving the accuracy of smoke concentration recognition for smoke particles with a smaller diameter or a smaller number.

[0093] Among them, the infrared receiver 106 and the infrared emitter 105 are soldered on the PCBA 104, and the luminous intensity of the infrared emitter 105 is configured as the target luminous intensity, which is the luminous intensity allowed by a larger infrared emitter 105, so as to improve the recognition rate of the infrared receiver 106 for the infrared signal emitted by the infrared emitter 105.

[0094] Among them, the metal shielding cover 103 is arranged on the back of the PCBA 104, strengthening the electromagnetic interference shielding and improving the receiving sensitivity.

[0095] In a possible implementation manner, multiple oil fume concentration levels are pre-configured in the electronic device, and each oil fume concentration level corresponds to a different oil fume concentration range. The first oil fume concentration levels corresponding to the multiple first oil fume concentrations can be determined according to the oil fume concentration ranges corresponding to each first oil fume concentration.

[0096] It should be understood that the specific implementation process and principle of this step can refer to Figure 3 the relevant content of the illustrated embodiment, which will not be elaborated here.

[0097] S13. Adjust the air volume of the range hood according to the second air volume corresponding to the first oil fume concentration level.

[0098] In this step, after determining the second air volume, if the first air volume is different from the second air volume, it means that the air volume of the range hood needs to be adjusted at this time.

[0099] In a specific implementation manner, the air volume of the range hood is adjusted from the first air volume to the second air volume.

[0100] Further, in order to prevent frequent air volume adjustment from affecting the user's cooking experience, after adjusting the air volume of the range hood from the first air volume to the second air volume, it is also necessary to maintain the current air volume (i.e., the second air volume) for a period of time.

[0101] In a specific implementation manner, after adjusting the air volume of the range hood from the first air volume to the second air volume, the air volume control method of the range hood may further include the following steps:

[0102] Step 1. Start timing and obtain the first cumulative duration.

[0103] Step 2. Determine the second oil fume concentration levels corresponding to the multiple second oil fume concentrations according to the multiple second oil fume concentrations in the cooking environment.

[0104] During the timing process, continuously obtain the multiple second oil fume concentrations in the cooking environment, so as to re-determine the new oil fume concentration level, that is, the second oil fume concentration level.

[0105] It should be understood that the implementation method of step 2 is the same as the implementation principle and method of determining the first oil fume concentration gear corresponding to multiple first oil fume concentrations in the cooking environment in S12, and will not be elaborated here.

[0106] Step 3.1: If the first cumulative duration obtained by timing is less than the first preset duration, and the second oil fume concentration gear is greater than the first oil fume concentration gear, then adjust the air volume of the range hood from the second air volume to the third air volume corresponding to the second oil fume concentration gear.

[0107] Among them, the oil fume concentration gear is correlated with the air volume.

[0108] In step 3.1, since the second oil fume concentration gear is greater than the first oil fume concentration gear, it indicates that the oil fume concentration is relatively high at this time, and a larger air volume is required to exhaust. In practical applications, between solving the problem of smoke exhaust and solving the problem of gear skipping, the priority of the problem of smoke exhaust is higher. Therefore, it is necessary to control the range hood to adjust to the third air volume to meet the emission requirements of the oil fume.

[0109] Step 3.2: If the first cumulative duration is less than the first preset duration, and the second oil fume concentration gear is equal to the first oil fume concentration gear, then start timing again and obtain the first cumulative duration again.

[0110] In step 3.2, the purpose of timing is to control the range hood to continuously operate at the current air volume (i.e., the second air volume) for a period of time to avoid repeatedly adjusting the air volume and affecting the user's cooking. When the second oil fume concentration gear is equal to the first oil fume concentration gear, it indicates that the oil fume concentration has not changed at this time, and the air volume required by the range hood is still the second air volume. Therefore, it is necessary to start timing again to ensure that the range hood continuously operates at the second air volume for a relatively long period of time.

[0111] Step 3.3: If the first cumulative duration is equal to or greater than the first preset duration, then adjust the air volume of the range hood from the second air volume to the first air volume.

[0112] In step 3.3, when the range hood does not determine a new higher air volume within the first cumulative duration and has run for a relatively long time, the air volume of the range hood can be restored to the initial first air volume.

[0113] When the first oil fume concentration gear is the highest oil fume concentration gear of the range hood, since the air volume of the first oil fume concentration gear is relatively large, compared with other oil fume concentration gears, the impact of frequently adjusting the air volume on the user is greater. Therefore, when the first oil fume concentration gear is the highest oil fume concentration gear of the range hood, and when the first cumulative duration is equal to or greater than the first preset duration, after adjusting the air volume of the range hood from the second air volume to the first air volume, the air volume control method of this range hood may further include the following steps:

[0114] Step A: Start timing and obtain the second cumulative duration.

[0115] Step B: Determine the third oil fume concentration levels corresponding to multiple third oil fume concentrations in the cooking environment.

[0116] During the timing process, continuously obtain multiple third oil fume concentrations in the cooking environment, so as to re-determine the new oil fume concentration level, that is, the third oil fume concentration level.

[0117] It should be understood that the implementation method of Step B is the same as the implementation principle and method of determining the first oil fume concentration levels corresponding to multiple first oil fume concentrations in S12, and will not be elaborated here.

[0118] Step C.1: If the second cumulative duration obtained by timing is less than the second preset duration and the third oil fume concentration level is equal to the first oil fume concentration level, start timing again.

[0119] It should be understood that the implementation method of Step C.1 can refer to the implementation principle and process in Step 3.2, and will not be elaborated here.

[0120] Step C.2: If the second cumulative duration is equal to or greater than the second preset duration, adjust the air volume of the range hood from the first air volume to the fourth air volume corresponding to the third oil fume concentration level.

[0121] After the second cumulative duration is equal to or greater than the second preset duration, at this time, the range hood has maintained the current air volume for a long time, and the air volume of the range hood can be re-adjusted according to the determined third oil fume concentration level.

[0122] Exemplarily, the above first preset duration and second preset duration can be preset according to actual needs, such as 30 seconds, 40 seconds, 50 seconds, etc., and the embodiments of the present disclosure do not specifically limit this.

[0123] The air volume control method of the range hood provided by the embodiment of the present disclosure controls the range hood to operate at a corresponding first air volume according to the target range hood gear and the back pressure of the range hood. Then, according to multiple first oil fume concentrations in the cooking environment, the first oil fume concentration gears corresponding to the multiple first oil fume concentrations are determined. Finally, the air volume of the range hood is adjusted according to the second air volume corresponding to the first oil fume concentration gear. Wherein, the target range hood gear is the range hood gear selected by the user on the range hood. In this technical solution, after the user selects the target range hood gear, the first air volume is determined in combination with the back pressure of the range hood, and when controlling the range hood to operate at the first air volume, the air volume of the range hood is adjusted again by detecting multiple first oil fume concentrations in the user's cooking environment. Through the above two adjustment processes, the accuracy of air volume adjustment is effectively improved.

[0124] Based on any of the above embodiments, S12 will be explained below. Figure 3 It is a schematic flowchart of the second embodiment of the air volume control method of the range hood provided by the embodiment of the present disclosure. As Figure 3 shown, the air volume control method of the range hood includes the following steps:

[0125] S31. Subtract the background noise from each first oil fume concentration to obtain the fourth oil fume concentration.

[0126] In this step, the background noise can be determined before the range hood is turned on, that is, the background noise is the oil fume concentration in the environment. Subtracting the background noise from the first oil fume concentration to reduce the influence of the environment on the value of the first oil fume concentration.

[0127] S32. Determine the first oil fume concentration gear according to multiple fourth oil fume concentrations and the oil fume concentration intervals corresponding to each oil fume concentration gear.

[0128] In a possible implementation manner, after the number of fourth oil fume concentrations reaches the first preset quantity, the average value of the first preset quantity of fourth oil fume concentrations is determined as the fifth oil fume concentration. Then, after the number of fifth oil fume concentrations reaches the second preset quantity, for the oil fume concentration intervals corresponding to each oil fume concentration gear, determine the target number of the second preset quantity of fifth oil fume concentrations that are within the oil fume concentration interval. Finally, among the oil fume concentration gears with the target number greater than the third preset quantity, the oil fume concentration gear with the highest level is determined as the first oil fume concentration gear.

[0129] It should be understood that the above first preset quantity, second preset quantity, third preset quantity, and target number can all be determined according to actual situations, and no specific limitations are imposed thereon.

[0130] Exemplarily, five fourth oil fume concentrations are filtered by moving average to obtain the fifth oil fume concentration. Then, 20 fifth oil fume concentrations are saved in the form of a queue, where the first in is the first out. For the oil fume concentration range corresponding to each oil fume concentration level, if more than 12 fifth oil fume concentrations are within this oil fume concentration range, then this oil fume concentration range is determined as the target oil fume concentration level. Finally, the highest level among the target oil fume concentration levels is determined as the first oil fume concentration level.

[0131] Optionally, in some embodiments, before the range hood is turned on, it is also necessary to determine the background noise after the range hood is turned on.

[0132] Method 1:

[0133] After detecting that the shutdown duration of the range hood meets the third preset duration, multiple first initial oil fume concentrations collected by the oil fume concentration detection module are obtained. Then, based on the multiple first initial oil fume concentrations collected by the oil fume concentration detection module and the background noise when the range hood was last turned on, the background noise after the range hood is turned on is determined.

[0134] In Method 1, the electronic device is equipped with an Electrically Erasable Programmable Read Only Memory (EEPROM). Exemplarily, after the range hood is turned off (the signal is sent by the whole machine) for 2 hours, data (the first initial oil fume concentration) is continuously collected for 1 minute, and the background noise after the range hood is turned on is calculated by means of first-order lag filtering. Exemplarily, the background noise after the range hood is turned on can be calculated by the following method:

[0135] The background noise after the range hood is turned on = the first initial oil fume concentration × 0.1 + the background noise when the range hood was last turned on × 0.9

[0136] It should be understood that if the above background noise collection conditions are not met, the background noise when the range hood was last turned on is directly used as the background noise after this turn-on. The background noise collection condition is that the range hood has been turned off for 2 hours.

[0137] Method 2:

[0138] After detecting that the range hood is powered on and is not in the working state within the fourth preset duration after power-on, multiple second initial oil fume concentrations collected by the oil fume concentration detection module are obtained. Then, the average value of the multiple second initial oil fume concentrations collected by the oil fume concentration detection module is determined as the background noise after the range hood is turned on; after detecting that the range hood is powered on and is in the working state within the fourth preset duration after power-on, the preset background noise is determined as the background noise after the range hood is turned on.

[0139] In Method 2, the electronic device does not deploy an EEPROM. Wait for 3 seconds each time it is powered on. If the range hood is not in the working state, collect the second initial oil fume concentration in the subsequent 5s, and take the average value as the background noise after the range hood is turned on; if the range hood is turned on during the 5s process, use the preset background noise as the background noise after the range hood is turned on.

[0140] Exemplarily, the preset background noise can be 50.

[0141] In this embodiment, when the electronic device deploys an EEPROM, the first initial oil fume concentration can be collected and the background noise can be determined after the range hood is turned off for a period of time. Since the shutdown time is long, it can be ensured that the first initial oil fume concentration collected at this time is the oil fume concentration in the environment, thus ensuring higher accuracy in determining the background noise. When the electronic device deploys an EEPROM, the background noise can be determined after the range hood is powered on.

[0142] In summary, the prior art does not have the ability to accurately sense smoke, that is, it can only judge whether there is oil fume, and cannot achieve accurate sensing of the oil fume concentration. Therefore, when combined with the flue resistance to judge and control the wind speed gear of the range hood, it is relatively rough and does not really conform to the user's working conditions. That is, when the wind speed gear should be reduced, it is not judged sufficiently and still runs at a higher wind speed, resulting in energy waste and a high noise experience; when a certain amount of oil fume is generated, it cannot be judged and the gear cannot be increased in time to increase the wind speed, resulting in oil fume escape.

[0143] In this technical solution, the gear of the range hood is adjusted through the back pressure of the range hood and the target range hood gear determined by the user; at the same time, the gear of the range hood is adjusted again according to the oil fume concentration in the cooking environment. By combining the two, it is controlled from multiple angles of "suction" and "exhaust", which is closer to the user's working conditions;

[0144] Based on the range hood air volume control method shown in any of the above embodiments, the process of adjusting the range hood air volume will be explained through several specific examples next.

[0145] Figure 4 It is a schematic flowchart of the third embodiment of the range hood air volume control method provided by the embodiments of the present disclosure. As Figure 4 shown, the range hood air volume control method includes the following steps:

[0146] S41. Control the range hood to operate at the air volume corresponding to the target range hood gear.

[0147] S42. Collect multiple first oil fume concentrations during the cooking process. When the first oil fume concentration gear determined according to the multiple first oil fume concentrations is the stir-fry gear, control the range hood to operate at the air volume corresponding to the stir-fry gear.

[0148] S43. Start timing.

[0149] S44. During the timing process, collect multiple second oil fume concentrations during the cooking process. When the second oil fume concentration level determined based on the multiple second oil fume concentrations is the stir-fry level, then restart the timing and execute S43.

[0150] S45. When the second oil fume concentration level determined based on the multiple second oil fume concentrations is other oil fume concentration levels, continue the timing.

[0151] S46. After the timing reaches 30 seconds, control the range hood to operate at the air volume corresponding to the target range hood level.

[0152] S47. Start timing.

[0153] S48. During the timing process, collect multiple third oil fume concentrations during the cooking process. When the third oil fume concentration level determined based on the multiple third oil fume concentrations is the stir-fry level or the stir-fry with light sauce level, then restart the timing and execute S47.

[0154] S49. When the third oil fume concentration level determined based on the multiple third oil fume concentrations is other oil fume concentration levels, continue the timing.

[0155] S410. After the timing reaches 30 seconds, restart the execution of S41.

[0156] Figure 5 This is the schematic flowchart of the fourth embodiment of the air volume control method of the range hood provided by the present disclosure. As Figure 5 shown, as Figure 5 shown, the air volume control method of this range hood includes the following steps:

[0157] S51. Control the range hood to operate at the air volume corresponding to the target range hood level.

[0158] S52. Collect multiple first oil fume concentrations during the cooking process. When the first oil fume concentration level determined based on the multiple first oil fume concentrations is the stir-fry with light sauce level, control the range hood to operate at the air volume corresponding to the stir-fry with light sauce level.

[0159] S53. Start timing.

[0160] S54. During the timing process, collect multiple second oil fume concentrations during the cooking process. When the second oil fume concentration level determined based on the multiple second oil fume concentrations is the stir-fry with light sauce level, then restart the timing and execute S53.

[0161] S55. When the second oil fume concentration level determined based on the multiple second oil fume concentrations is the stir-fry level, control the range hood to operate at the air volume corresponding to the stir-fry level.

[0162] S56. If the second oil fume concentration range determined based on multiple second oil fume concentrations is other than the above-mentioned ranges, continue timing.

[0163] S57. After the timing reaches 30 seconds, re - execute S51.

[0164] Figure 6 This is a schematic flowchart of the fifth embodiment of the air volume control method for the range hood provided by the present disclosure. As Figure 6 shown, as Figure 6 shown, the air volume control method for the range hood includes the following steps:

[0165] S61. Control the range hood to operate at the air volume corresponding to the target range hood setting.

[0166] S62. Collect multiple first oil fume concentrations during the cooking process. When the first oil fume concentration range determined based on the multiple first oil fume concentrations is the stewing range or the smokeless range, control the range hood to operate at the air volume corresponding to the stewing range or the smokeless range.

[0167] S63. Collect multiple second oil fume concentrations during the cooking process. When the second oil fume concentration range determined based on the multiple second oil fume concentrations is the stir - frying range, control the range hood to operate at the air volume corresponding to the stir - frying range.

[0168] S64. When the second oil fume concentration range determined based on the multiple second oil fume concentrations is the high - heat stir - frying range, control the range hood to operate at the air volume corresponding to the high - heat stir - frying range.

[0169] After the range hood is turned on, if the currently determined first oil fume concentration range is the stir - frying range or the high - heat stir - frying range, jump out of the back - pressure judgment logic (that is, at this time, the air volume is not determined in combination with the back - pressure), and continue to judge the air volume according to the back - pressure range until it drops to the initial air volume (that is, the first air volume). That is, the priority of judging the air volume according to the oil fume concentration is higher than that of judging the air volume according to the back - pressure. As the oil fume concentration increases, the air volume is increased to quickly suck it clean, while the back - pressure is more based on the basic flue conditions of the user's home. After a single judgment, the basic air volume is set to ensure that the exhaust resistance can be overcome.

[0170] The following is an embodiment of the device of the present disclosure, which can be used to execute the method embodiment of the present disclosure. For the details not disclosed in the embodiment of the device of the present disclosure, please refer to the method embodiment of the present disclosure.

[0171] Figure 7 This is a schematic structural diagram of the air volume control device for the range hood provided by the present disclosure. As Figure 7 shown, the air volume control device 70 for the range hood includes:

[0172] A control module 71, configured to control the range hood to operate at a corresponding first air volume according to the target range hood speed and the back pressure of the range hood, where the target range hood speed is the range hood speed selected by the user on the range hood.

[0173] A determination module 72, configured to determine first oil fume concentration levels corresponding to multiple first oil fume concentrations in the cooking environment.

[0174] An adjustment module 73, configured to adjust the air volume of the range hood according to a second air volume corresponding to the first oil fume concentration level.

[0175] In a possible design, the adjustment module 73 is specifically configured to:

[0176] Adjust the air volume of the range hood from the first air volume to the second air volume.

[0177] In a possible design, the air volume control device 70 of the range hood further includes:

[0178] A timing module, configured to start timing and obtain a first cumulative duration.

[0179] The determination module 72 is further configured to determine second oil fume concentration levels corresponding to multiple second oil fume concentrations in the cooking environment.

[0180] The adjustment module 73 is further configured to, if the first cumulative duration obtained by timing is less than a first preset duration and the second oil fume concentration level is greater than the first oil fume concentration level, adjust the air volume of the range hood from the second air volume to a third air volume corresponding to the second oil fume concentration level. Wherein, the oil fume concentration level is correlated with the air volume.

[0181] The timing module is further configured to, if the first cumulative duration is less than the first preset duration and the second oil fume concentration level is equal to the first oil fume concentration level, restart timing and obtain a new first cumulative duration.

[0182] The adjustment module 73 is further configured to, if the first cumulative duration is equal to or greater than the first preset duration, adjust the air volume of the range hood from the second air volume to the first air volume.

[0183] In a possible design, when the first oil fume concentration level is the highest oil fume concentration level of the range hood, after adjusting the air volume of the range hood from the second air volume to the first air volume if the first cumulative duration is equal to or greater than the first preset duration, the timing module is further configured to start timing and obtain a second cumulative duration.

[0184] The determination module 72 is further configured to determine third oil fume concentration levels corresponding to multiple third oil fume concentrations in the cooking environment.

[0185] The timing module is further configured to restart timing if the second cumulative duration obtained by timing is less than the second preset duration and the third oil fume concentration level is equal to the first oil fume concentration level.

[0186] The adjustment module 73 is further configured to adjust the air volume of the range hood from the first air volume to the fourth air volume corresponding to the third oil fume concentration level if the second cumulative duration is equal to or greater than the second preset duration.

[0187] In a possible design, the determination module 72 is specifically configured to:

[0188] Subtract the background noise from each first oil fume concentration to obtain the fourth oil fume concentration.

[0189] Determine the first oil fume concentration level according to the multiple fourth oil fume concentrations and the oil fume concentration intervals corresponding to each oil fume concentration level.

[0190] In a possible design, the determination module 72 is specifically configured to:

[0191] After the number of the fourth oil fume concentrations reaches the first preset quantity, determine the average value of the first preset quantity of the fourth oil fume concentrations as the fifth oil fume concentration.

[0192] After the number of the fifth oil fume concentrations reaches the second preset quantity, for each oil fume concentration interval corresponding to each oil fume concentration level, determine the target number of the fifth oil fume concentrations within the oil fume concentration interval among the second preset quantity of the fifth oil fume concentrations.

[0193] Determine the oil fume concentration level with the highest rank among the oil fume concentration levels where the target number is greater than the third preset quantity as the first oil fume concentration level.

[0194] The air volume control device of the range hood provided by the embodiments of the present disclosure can be used to execute the air volume control method of the range hood in any of the above embodiments, and its implementation principle and technical effects are similar, which will not be elaborated here.

[0195] It should be noted that it should be understood that the division of each module of the above device is only a logical function division. In actual implementation, it can be fully or partially integrated into a physical entity, or physically separated. And these modules can all be implemented in the form of software called by a processing element; they can also all be implemented in the form of hardware; or some modules can be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. In addition, all or part of these modules can be integrated together or independently implemented. The processing element mentioned here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed by the hardware integrated logic circuit or software-form instructions in the processor element.

[0196] Figure 8 The structural schematic diagram of the electronic device provided by the embodiments of the present disclosure. As Figure 8 shown, the electronic device may include: a processor 81, a memory 82, and computer program instructions stored on the memory 82 and executable on the processor 81. When the processor 81 executes the computer program instructions, the air volume control method of the range hood provided in any of the foregoing embodiments is implemented.

[0197] Optionally, the electronic device may further include an interface for interacting with other devices.

[0198] Optionally, the above-mentioned components of the electronic device may be connected through a system bus.

[0199] The memory 82 may be a separate storage unit or an integrated storage unit in the processor. The number of processors is one or more.

[0200] It should be understood that the processor 81 may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the present disclosure may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0201] The system bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The system bus may be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, only a thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The memory may include a random access memory (RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory.

[0202] All or part of the steps of the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a readable memory. When the program is executed, it executes the steps of the above method embodiments; and the foregoing memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state drive, magnetic tape, floppy disk, optical disc, and any combination thereof.

[0203] The electronic device provided by the embodiments of the present disclosure can be used to execute the air volume control method of the range hood provided by any of the above method embodiments, and its implementation principle and technical effects are similar, which will not be elaborated here.

[0204] The embodiments of the present disclosure provide a computer-readable storage medium, in which computer instructions are stored. When the computer instructions run on a computer, the computer is enabled to execute the air volume control method of the range hood.

[0205] The above computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory, electrically erasable programmable read-only memory, erasable programmable read-only memory, programmable read-only memory, read-only memory, magnetic memory, flash memory, magnetic disk or optical disc. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0206] Optionally, the readable storage medium is coupled to the processor, so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in the device.

[0207] The embodiments of the present disclosure further provide a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium, and when the at least one processor executes the computer program, the air volume control method of the range hood can be implemented.

[0208] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A method for controlling the air volume of an oil fume extractor, characterized in that, Including: Controlling the range hood to operate at a corresponding first air volume according to the target range hood gear and the back pressure of the range hood, where the target range hood gear is the range hood gear selected by the user on the range hood; Determining a first oil fume concentration gear corresponding to the plurality of first oil fume concentrations in the cooking environment; Adjusting the air volume of the range hood according to the second air volume corresponding to the first oil fume concentration gear.

2. The method according to claim 1, wherein The adjusting the air volume of the range hood according to the second air volume corresponding to the first oil fume concentration gear includes: Adjusting the air volume of the range hood from the first air volume to the second air volume.

3. The method according to claim 2, characterized in that The method further includes: Starting to time and obtaining a first cumulative duration; Determining a second oil fume concentration gear corresponding to the plurality of second oil fume concentrations in the cooking environment; If the first cumulative duration obtained by timing is less than a first preset duration and the second oil fume concentration gear is greater than the first oil fume concentration gear, then adjusting the air volume of the range hood from the second air volume to a third air volume corresponding to the second oil fume concentration gear; wherein, the oil fume concentration gear is correlated with the air volume; If the first cumulative duration is less than the first preset duration and the second oil fume concentration gear is equal to the first oil fume concentration gear, then start timing again and obtain a first cumulative duration again; If the first cumulative duration is equal to or greater than the first preset duration, then adjusting the air volume of the range hood from the second air volume to the first air volume.

4. The method according to claim 3, characterized in that, When the first oil fume concentration gear is the highest oil fume concentration gear of the range hood, after the step of if the first cumulative duration is equal to or greater than the first preset duration, then adjusting the air volume of the range hood from the second air volume to the first air volume, the method further includes: Starting to time and obtaining a second cumulative duration; Determining a third oil fume concentration gear corresponding to the plurality of third oil fume concentrations in the cooking environment; If the second cumulative duration obtained by timing is less than a second preset duration and the third oil fume concentration gear is equal to the first oil fume concentration gear, then start timing again; If the second cumulative duration is equal to or greater than the second preset duration, then adjusting the air volume of the range hood from the first air volume to a fourth air volume corresponding to the third oil fume concentration gear.

5. The method according to any one of claims 1 to 4, characterized in that, The determining the first oil fume concentration gear corresponding to the plurality of first oil fume concentrations in the cooking environment includes: Subtracting the background noise from each first oil fume concentration to obtain a fourth oil fume concentration; Determining the first oil fume concentration gear according to the plurality of fourth oil fume concentrations and the oil fume concentration range corresponding to each oil fume concentration gear.

6. The method according to claim 5, wherein The determining the first oil fume concentration gear according to the plurality of fourth oil fume concentrations and the oil fume concentration range corresponding to each oil fume concentration gear includes: After the number of the fourth oil fume concentrations reaches a first preset quantity, determining the average value of the first preset quantity of fourth oil fume concentrations as a fifth oil fume concentration; After the number of the fifth oil fume concentrations reaches the second preset quantity, for each oil fume concentration range corresponding to an oil fume concentration level, determine the target quantity of the second preset quantity of the fifth oil fume concentrations that are within the oil fume concentration range; Among the oil fume concentration levels where the target quantity is greater than the third preset quantity, determine the oil fume concentration level with the highest level as the first oil fume concentration level.

7. An air volume control device for a range hood, characterized in that, Including: A control module, configured to control the range hood to operate according to a corresponding first air volume according to the target range hood level and the back pressure of the range hood, where the target range hood level is the range hood level selected by the user on the range hood; A determination module, configured to determine the first oil fume concentration levels corresponding to the plurality of first oil fume concentrations according to the plurality of first oil fume concentrations in the cooking environment; An adjustment module, configured to adjust the air volume of the range hood according to a second air volume corresponding to the first oil fume concentration level.

8. An electronic device, comprising: A processor, a memory, and computer program instructions stored on the memory and executable on the processor, wherein the processor, when executing the computer program instructions, is configured to implement the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, Computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by the processor, they are configured to implement the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, The computer program, when executed by the processor, is configured to implement the method according to any one of claims 1 to 6.

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