Intelligent control method and system of extractor hood and extractor hood

Abstract

The invention relates to an intelligent control method and system of a range hood and the range hood. The intelligent control method of the extractor hood comprises the following steps: constructing an oil smoke rising three-dimensional model based on oil smoke data collected by a sensor assembly of the extractor hood; transversely segmenting the lampblack rising three-dimensional model into a plurality of lampblack three-dimensional bodies in the vertical direction to obtain the volume of each lampblack three-dimensional body; based on the relation between the rotating speed of a motor of the range hood and a preset volume gear, sequentially determining a range hood gear and delay adjustment time corresponding to each lampblack three-dimensional body; and dynamically adjusting the operation gear of the range hood to the range hood gear corresponding to each oil fume three-dimensional body after the delay adjustment time corresponding to each oil fume three-dimensional body is sequentially spaced, so that the operation gear of the range hood can be always matched with the range hood gear corresponding to each oil fume three-dimensional body.

Description

Technical Field

[0001] This application relates to the field of smart kitchen technology, and in particular to a smart control method and system for a range hood and a range hood itself. Background Technology

[0002] As people's living standards improve, range hoods have become an indispensable appliance in the kitchen. They are usually installed above the kitchen stove and can extract the fumes generated during cooking, thereby purifying the kitchen environment and improving people's comfort while cooking.

[0003] However, most range hoods currently operate at fixed speeds to extract cooking fumes: if the current speed is low but the amount of fumes is high, fumes may escape; if the current speed is high but the amount of fumes is low, although the fumes are extracted normally, the high speed will bring high noise, which will seriously affect the user's cooking experience.

[0004] In addition, although some range hoods can determine the total amount of oil fumes through oil fume sensors or particle scanners at the smoke collection chamber, and adjust the fan speed by comparing the current oil fume removal rate, these range hoods still have problems with inaccurate oil fume measurement and / or delayed speed adjustment because the oil fume sensors or particle scanners always measure the current oil fume concentration at the smoke collection chamber for speed adjustment. Summary of the Invention

[0005] In view of the above-mentioned existing technology, an intelligent control method and system for a range hood is provided, as well as the range hood itself. This method can accurately detect the current amount of cooking fumes and dynamically adjust the range hood settings according to the real-time amount of cooking fumes, so as to provide users with the best noise experience while ensuring that the cooking fumes are completely extracted.

[0006] According to one aspect of this application, an intelligent control method for a range hood is provided, comprising the steps of: constructing a three-dimensional model of rising oil fumes based on oil fume data collected by the sensor components of the range hood; horizontally dividing the three-dimensional model of rising oil fumes into multiple three-dimensional oil fume volumes along the vertical direction to obtain the volume of each three-dimensional oil fume volume; determining the range hood speed and delay adjustment time corresponding to each three-dimensional oil fume volume in sequence based on the motor speed of the range hood and a preset volume level relationship; and dynamically adjusting the operating speed of the range hood to the range hood speed corresponding to each three-dimensional oil fume volume after sequentially pausing at intervals corresponding to the delay adjustment time of each three-dimensional oil fume volume, so that the operating speed of the range hood can always match the range hood speed corresponding to each three-dimensional oil fume volume.

[0007] In one embodiment of this application, in the step of horizontally dividing the three-dimensional model of rising oil fumes into multiple three-dimensional oil fume bodies along the vertical direction to obtain the volume of each three-dimensional oil fume body: the three-dimensional model of rising oil fumes is horizontally divided into N three-dimensional oil fume bodies, such that the height of each three-dimensional oil fume body is the same.

[0008] In one embodiment of this application, the step of determining the range hood speed and delay adjustment time corresponding to each three-dimensional volume of cooking fumes based on the relationship between the range hood motor speed and the preset volume level includes the following steps: The system reads the current motor speed and current operating level of the range hood, determines the range hood level corresponding to the current three-dimensional volume of cooking fumes through a preset volume-level relationship, and determines the current air inlet speed through a preset speed-wind speed relationship. Based on the current fume control distance and the current air inlet speed, it calculates the delay adjustment time for the level corresponding to the current three-dimensional volume of cooking fumes. After the range hood's operating level is adjusted to the level corresponding to the current three-dimensional volume of cooking fumes, the system reads the motor speed of the range hood again to serve as the next motor speed, determines the range hood level corresponding to the next three-dimensional volume of cooking fumes through a preset volume-level relationship, and determines the next air inlet speed through a preset speed-wind speed relationship. Finally, based on the next fume control distance and the next air inlet speed, it calculates the delay adjustment time for the level corresponding to the next three-dimensional volume of cooking fumes.

[0009] In one embodiment of this application, the current fume control distance is the vertical distance between the current three-dimensional fume volume and the air inlet of the range hood at the current time; the next fume control distance is equal to the height of the current three-dimensional fume volume.

[0010] In one embodiment of this application, the steps of reading the current motor speed and current operating level of the range hood, determining the range hood level corresponding to the current three-dimensional volume of oil fumes through a preset volume-level relationship, and determining the current air inlet wind speed through a preset speed-wind speed relationship include the following steps: The preset motor speed range corresponding to the current motor speed is determined as the current motor speed range; based on the current motor speed range, the preset volume gear relationship under the current motor speed range is retrieved; based on the volume of the current three-dimensional oil fume, the range hood gear corresponding to the current three-dimensional oil fume is determined through the retrieved volume gear relationship; and based on the current motor speed and current operating gear of the range hood, the current air inlet wind speed is determined through the preset speed-wind speed relationship.

[0011] In one embodiment of this application, the step of, after the range hood's operating level is adjusted to the level corresponding to the current three-dimensional volume of cooking fumes, reading the range hood's motor speed again as the next motor speed, determining the range hood level corresponding to the next three-dimensional volume of cooking fumes through a preset volume level relationship, and determining the next air inlet speed through a preset speed-wind speed relationship, includes the following steps: The preset motor speed range corresponding to the next motor speed is determined as the next motor speed range; based on the next motor speed range, the preset volume gear relationship under the next motor speed range is retrieved; based on the volume of the next three-dimensional oil fume, the range hood gear corresponding to the next three-dimensional oil fume is determined through the retrieved volume gear relationship; and based on the range hood gear and motor speed corresponding to the current three-dimensional oil fume, the next air inlet wind speed is determined through the preset speed-wind speed relationship.

[0012] In one embodiment of this application, the step of dynamically adjusting the operating level of the range hood to the level corresponding to each three-dimensional oil fume body after sequentially intervals of delay adjustment time corresponding to each three-dimensional oil fume body, so that the operating level of the range hood can always match the level corresponding to each three-dimensional oil fume body, includes the following steps: First, after a delay adjustment time corresponding to the current three-dimensional oil fume volume, adjust the operating level of the range hood to the level corresponding to the current three-dimensional oil fume volume; then, after a delay adjustment time corresponding to the next three-dimensional oil fume volume, adjust the operating level of the range hood to the level corresponding to the next three-dimensional oil fume volume.

[0013] In one embodiment of this application, the intelligent control method for the range hood further includes the step of: After summing the delay adjustment times corresponding to the gear positions of multiple three-dimensional oil fume volumes, the three-dimensional oil fume rising model is reconstructed to repeat the above steps.

[0014] According to another aspect of this application, one embodiment of this application further provides an intelligent control system for a range hood, including: a model building module, used to construct a three-dimensional model of rising oil fumes based on oil fume data collected by the sensor components of the range hood; a model segmentation module, used to horizontally segment the three-dimensional model of rising oil fumes into multiple three-dimensional oil fume bodies along the vertical direction to obtain the volume of each three-dimensional oil fume body; a gear time determination module, used to sequentially determine the range hood gear and delay adjustment time corresponding to each three-dimensional oil fume body based on the motor speed of the range hood and a preset volume gear relationship; and a gear adjustment module, used to dynamically adjust the operating gear of the range hood to the gear corresponding to each three-dimensional oil fume body after sequentially at intervals of the delay adjustment time corresponding to each three-dimensional oil fume body, so that the operating gear of the range hood can always match the gear corresponding to each three-dimensional oil fume body.

[0015] According to another aspect of this application, one embodiment of this application further provides a range hood, including: a range hood body, including a fan system and a smoke collection chamber disposed below the fan system; a sensor assembly, including a plurality of first image sensors disposed in the smoke collection chamber and a plurality of second image sensors disposed around the cooktop; and an intelligent control system for the range hood, wherein the intelligent control system of the range hood is communicatively connected to the fan system and the sensor assembly.

[0016] In summary, because the intelligent control method of this application constructs and horizontally subdivides the three-dimensional model of rising oil fumes before the three-dimensional oil fume is sucked into the air inlet, the range hood speed corresponding to each three-dimensional oil fume is determined in advance. Therefore, although the intelligent control method of this application adjusts the operating speed of the range hood with a delay, it ensures that the operating speed of the range hood always matches the operating speed corresponding to each three-dimensional oil fume. That is, just as each three-dimensional oil fume is about to be sucked into the air inlet, the operating speed of the range hood is adjusted in real time to match the corresponding three-dimensional oil fume, so as to provide the best noise experience for users while ensuring that the oil fumes are completely extracted.

[0017] Furthermore, although the distance between the first three-dimensional oil fume body and the air inlet is usually different from the height of each three-dimensional oil fume body when constructing the three-dimensional model of oil fume rising, resulting in the delay adjustment time of the range hood speed corresponding to the first three-dimensional oil fume body being different from the delay adjustment time of the range hood speed corresponding to other three-dimensional oil fume bodies, the intelligent control method of the range hood in this application can accurately determine the delay adjustment time of the range hood speed corresponding to the next three-dimensional oil fume body based on the current oil fume control distance and the currently acquired air inlet wind speed, so as to ensure that the operating speed of the range hood can always match the range hood speed corresponding to each three-dimensional oil fume body, so as to provide the best noise experience for users while ensuring that the oil fumes are completely extracted. Attached Figure Description

[0018] Figure 1 This is a flowchart illustrating an intelligent control method for a range hood according to an embodiment of this application; Figure 2 A flowchart illustrating the gear setting time determination step in the intelligent control method for a range hood according to the above embodiments of this application is shown. Figure 3 An example is shown of the intelligent control method for a range hood according to the above embodiments of this application, which determines the fan speed of the current three-dimensional volume of oil fumes. Figure 4 An example is shown of the intelligent control method for a range hood according to the above embodiments of this application, which determines the wind speed of the next three-dimensional volume of oil fumes. Figure 5 A flowchart illustrating the gear adjustment step in the intelligent control method for a range hood according to the above embodiments of this application is shown. Figure 6 This is a block diagram of an intelligent control system for a range hood according to an embodiment of this application; Figure 7 This is a perspective view of a range hood according to an embodiment of this application; Figure 8 A cross-sectional schematic diagram of a range hood according to the above embodiments of this application is shown; Figure 9 A schematic diagram of the structure of a range hood according to the above embodiments of this application is shown from another perspective.

[0019] Explanation of key component symbols: 10. Range hood body; 11. Fan system; 12. Smoke collection chamber; 120. Air inlet; 121. Housing; 122. Smoke baffle assembly; 20. Sensor assembly; 21. First image sensor; 22. Second image sensor; 30. Intelligent control system of range hood; 31. Model building module; 32. Model segmentation module; 33. Gear time determination module; 34. Gear adjustment module; 40. Cooktop.

[0020] The above description of the main component symbols, together with the accompanying drawings and specific embodiments, provides a further detailed explanation of this application. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and 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 of this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Considering that some range hoods' smoke sensors or particle scanners always measure the current smoke concentration at the collection chamber to adjust the speed, these range hoods still suffer from inaccurate smoke volume measurement and / or lag in speed adjustment. Therefore, this application creatively provides an intelligent control method and system for a range hood, as well as the range hood itself, which can accurately detect the current smoke volume to dynamically adjust the speed based on the real-time smoke volume, thus providing the best noise experience for the user while ensuring complete smoke extraction.

[0027] Specifically, such as Figure 1 As shown, one embodiment of this application provides an intelligent control method for a range hood, which may include the following steps: S100: Based on the oil fume data collected by the sensor components of the range hood, a three-dimensional model of oil fume rising is constructed; S200: Divide the three-dimensional model of rising oil fumes into multiple three-dimensional oil fume volumes along the vertical direction to obtain the volume of each three-dimensional oil fume volume; S300: Based on the motor speed of the range hood and the preset volume level relationship, the range hood level and delay adjustment time corresponding to each three-dimensional volume of cooking fumes are determined sequentially; and, S400: After sequentially adjusting the delay time corresponding to each three-dimensional oil fume body, the operating level of the range hood is dynamically adjusted to the range hood level corresponding to each three-dimensional oil fume body, so that the operating level of the range hood can always match the range hood level corresponding to each three-dimensional oil fume body.

[0028] It is worth noting that, because the intelligent control method of the range hood in this application constructs and horizontally subdivides the three-dimensional model of rising oil fumes before the three-dimensional oil fume is sucked into the air inlet, the range hood speed corresponding to each three-dimensional oil fume is determined in advance. Therefore, although the intelligent control method of the range hood in this application adjusts the operating speed of the range hood with a delay, it ensures that the operating speed of the range hood always matches the operating speed of each three-dimensional oil fume. That is, just as each three-dimensional oil fume is about to be sucked into the air inlet, the operating speed of the range hood is adjusted in real time to match the corresponding three-dimensional oil fume, so as to provide the best noise experience for users while ensuring that the oil fumes are completely extracted.

[0029] More specifically, in step S100 of the intelligent control method for a range hood in this application: the sensor assembly of the range hood includes multiple first image sensors arranged in the smoke collection chamber and multiple second image sensors arranged around the cooktop, so as to accurately acquire a three-dimensional model of the rising oil fumes below the range hood through multi-angle and multi-position image sensors, and then lay the foundation for subsequent real-time fine-tuning of the oil fume level by horizontally subdividing the three-dimensional model of the rising oil fume. It is understood that the oil fume data mentioned in this application may refer to, but is not limited to, oil fume images captured by the first image sensors and the second image sensors, so as to obtain the oil fume grayscale value through a preset gray value threshold, which is convenient for accurately fitting the three-dimensional model of the rising oil fume.

[0030] Preferably, in step S200 of the intelligent control method for the range hood of this application: the three-dimensional model of rising oil fumes is horizontally divided into N three-dimensional oil fume bodies, such that the dimensions of each three-dimensional oil fume body are consistent in the vertical direction, i.e. Figure 8 As shown, the height h of each three-dimensional volume of cooking fumes is the same to better determine the corresponding delay adjustment time for each volume. It can be understood that, as... Figure 8 As shown, the volumes of the N three-dimensional bodies mentioned in this application, from top to bottom, are V1, V2...V... N N is a positive integer greater than or equal to 2.

[0031] Furthermore, since the delay adjustment time corresponding to each three-dimensional volume of oil fume will vary depending on the air inlet velocity, and the air inlet velocity directly depends on the motor speed of the range hood, the intelligent control method of the range hood in this application needs to first determine the range hood speed corresponding to the volume of the current three-dimensional volume of oil fume based on the motor speed of the range hood, and then determine the delay adjustment time corresponding to the next three-dimensional volume of oil fume based on the air inlet velocity of the current range hood speed at the current motor speed.

[0032] Optionally, such as Figure 2 As shown, step S300 of the intelligent control method for the range hood of this application includes the following steps: S310: Reads the current motor speed and current operating level of the range hood, determines the range hood level corresponding to the current three-dimensional volume of oil fumes through the preset volume level relationship, and determines the current air inlet wind speed through the preset speed and wind speed relationship. S320: Based on the current fume control distance and the current air inlet velocity, calculate the delay adjustment time corresponding to the current three-dimensional fume volume. S330: After the range hood's operating level is adjusted to correspond to the current three-dimensional volume of cooking fumes, the motor speed of the range hood is read again as the next motor speed. The range hood level corresponding to the next three-dimensional volume of cooking fumes is determined through a preset volume-level relationship, and the next air inlet speed is determined through a preset speed-speed relationship; and... S340: Based on the next oil fume control distance and the next air inlet wind speed, calculate the delay adjustment time corresponding to the next oil fume three-dimensional volume.

[0033] It is worth noting that the current fume control distance mentioned in this application refers to the vertical distance between the current three-dimensional fume volume and the air inlet of the range hood at the current moment, which can be obtained through the three-dimensional model of fume rising; the next fume control distance mentioned in this application refers to the vertical distance between the next three-dimensional fume volume and the air inlet of the range hood after the current delay adjustment time, which can also be obtained through the three-dimensional model of fume rising, and is equal to the height of the current three-dimensional fume volume.

[0034] Furthermore, the current inlet air velocity can be pre-obtained by testing the inlet air velocity at the current motor speed when the range hood is in its current operating position; the next inlet air velocity can be pre-obtained by testing the inlet air velocity at the next motor speed when the range hood is in the range hood position corresponding to the current three-dimensional oil fume. It is understood that the inlet air velocity mentioned in this application can be obtained by testing the air velocity at different motor speeds when the range hood is in various positions, and stored in advance in the controller for later retrieval. It is understood that the next motor speed mentioned in this application refers to the motor speed read when the range hood is in the range hood position corresponding to the current three-dimensional oil fume.

[0035] For example, such as Figure 8 As shown, if the current three-dimensional fume volume corresponds to the first three-dimensional fume volume, then the current fume control distance is equal to the vertical distance d1 between the first three-dimensional fume volume and the air inlet of the range hood at the current moment. At this time, the next fume control distance refers to the vertical distance between the second three-dimensional fume volume and the air inlet of the range hood at the interval of the current delay adjustment time, which is equal to the height h of the first three-dimensional fume volume. Thus, the delay adjustment time t1 corresponding to the current three-dimensional fume volume satisfies the following relationship: t1 = d1 / v0, where d1 is the vertical distance between the first three-dimensional fume volume and the air inlet of the range hood at the current moment, and v0 is the air inlet velocity measured by the range hood at the current operating level and motor speed. The delay adjustment time t2 corresponding to the next three-dimensional fume volume satisfies the following relationship: t2 = h / v1, where h is the height of the current three-dimensional fume volume, and v1 is the air inlet velocity measured by the range hood at the range hood level and motor speed corresponding to the first three-dimensional fume volume.

[0036] If the current three-dimensional fume corresponds to the (N-1)th three-dimensional fume, then the current fume control distance is equal to the vertical distance between the (N-1)th three-dimensional fume and the air inlet of the range hood at the current moment, and equal to the height h of the (N-2)th three-dimensional fume. At this point, the next fume control distance refers to the vertical distance between the Nth three-dimensional fume and the air inlet of the range hood at the interval of the current delay adjustment time, which is equal to the height h of the (N-1)th three-dimensional fume. Thus, the delay adjustment time t corresponding to the current three-dimensional fume is... N-1 Satisfying the relation: t N-1 =h / v N-2 Where h is the height of the (N-2)th three-dimensional volume of oil fume, v N-2 This refers to the inlet air velocity measured at the range hood speed and motor rotation speed corresponding to the (N-2)th three-dimensional volume of cooking fumes. The delay adjustment time t is the time required to adjust the speed corresponding to the next three-dimensional volume of cooking fumes. N Satisfying the relation: t N =h / v N-1 Where h is the height of the (N-1)th three-dimensional volume of oil fume, v N-1 It is the air inlet wind speed measured by the range hood at the range hood speed and motor speed corresponding to the N-1th three-dimensional volume of oil fumes.

[0037] Optionally, such as Figure 3 As shown, step S310 of the intelligent control method for the range hood of this application may include the following steps: S311: Determine the preset motor speed range corresponding to the current motor speed, and use it as the current motor speed range; S312: Based on the current motor speed range, retrieve the preset volume gear relationship under the current motor speed range; S313: Based on the current volume of the three-dimensional fume volume, determine the range hood setting corresponding to the current three-dimensional fume volume through the retrieved volume setting relationship; and, S314: Based on the current motor speed and current operating level of the range hood, determine the current air inlet speed through a preset speed-wind speed relationship.

[0038] Similarly, such as Figure 4 As shown, step S330 of the intelligent control method for the range hood of this application may include the following steps: S331: Determine the preset motor speed range corresponding to the next motor speed, and use it as the next motor speed range; S332: Based on the next motor speed range, retrieve the preset volume gear relationship in the next motor speed range; S333: Based on the volume of the next three-dimensional volume of oil fume, determine the range hood setting corresponding to the next three-dimensional volume of oil fume through the retrieved volume setting relationship; and, S334: Based on the range hood speed and motor speed corresponding to the current three-dimensional volume of oil fumes, determine the next air inlet speed through a preset speed-wind speed relationship.

[0039] It is worth noting that, although the distance d1 between the first three-dimensional oil fume body and the air inlet is usually different from the height h of each three-dimensional oil fume body when constructing the three-dimensional model of oil fume rising, resulting in the delay adjustment time of the range hood speed corresponding to the first three-dimensional oil fume body being different from the delay adjustment time of the range hood speed corresponding to other three-dimensional oil fume bodies, the intelligent control method of the range hood in this application can accurately determine the delay adjustment time of the range hood speed corresponding to the next three-dimensional oil fume body based on the current oil fume control distance and the currently acquired air inlet wind speed, so as to ensure that the operating speed of the range hood can always match the range hood speed corresponding to each three-dimensional oil fume body, so as to provide the best noise experience for users while ensuring that the oil fumes are completely extracted.

[0040] Optionally, such as Figure 5 As shown, step S400 of the intelligent control method for the range hood in this application includes the following steps: S410: After a delay adjustment period corresponding to the current three-dimensional fume volume, adjust the operating level of the range hood to the level corresponding to the current three-dimensional fume volume; and, S420: After a delay adjustment time corresponding to the next three-dimensional oil fume volume, adjust the operating level of the range hood to the level corresponding to the next three-dimensional oil fume volume.

[0041] It is worth noting that the intelligent control method for the range hood in this application may further include the following steps: S500: After the sum of the delay adjustment times corresponding to the gear positions of multiple three-dimensional oil fume bodies, the three-dimensional model of oil fume rising is reconstructed to repeat the above steps.

[0042] It is understood that the multiple three-dimensional oil fume bodies mentioned in step S500 of the intelligent control method for the range hood of this application can refer to all three-dimensional oil fume bodies in the three-dimensional oil fume rising model, or it can refer to a portion of the three-dimensional oil fume bodies in the three-dimensional oil fume rising model. Preferably, after the sum of the delay adjustment times corresponding to the gears of N-1 oil fume bodies, the three-dimensional oil fume rising model is reconstructed to repeat the above steps, so that while the Nth oil fume body is being drawn into the air inlet of the range hood, the three-dimensional oil fume rising model is reconstructed, ensuring that the operation gear adjustment of the range hood has good continuity and real-time performance.

[0043] Furthermore, in a specific example of the intelligent control method for the range hood in this application, a preset stage is included before the specific control stage, in order to preset the volume gear relationship and the speed and wind speed relationship in advance.

[0044] For example, when the motor speed n < n1, if the volume of the three-dimensional oil fume VE < VE1, then the corresponding range hood setting is set to P11; if VE1 ≤ VE < VE2, then the corresponding range hood setting is set to P12; if VE2 ≤ VE < VE3, then the corresponding range hood setting is set to P13; ..., if VEi ≤ VE < VE(i+1), then the corresponding range hood setting is set to P1i. When the motor speed n1 ≤ n < n2, if VE < VE1, then the corresponding range hood setting is set to P21; if VE1 ≤ VE < VE2, then the corresponding range hood setting is set to P22; if VE2 ≤ VE < VE3, then the corresponding range hood setting is set to P23; ..., if VEi ≤ VE < VE(i+1), then the corresponding range hood setting is set to P2i. ... When the motor speed nn≤n<n(n+1), if VE<VE1, then the corresponding range hood speed is set to P(n+1)1; if VE1≤VE<VE2, then the corresponding range hood speed is set to P(n+1)2; if VE2≤VE<VE3, then the corresponding range hood speed is set to P(n+1)3; ..., if VEi≤VE<VE(i+1), then the corresponding range hood speed is set to P(n+1)i; and these preset volume speed relationships are stored in the controller for later retrieval.

[0045] In addition, the inlet air velocity was tested at different motor speeds (n1, n2, ..., nn) ​​when the range hood was in various operating positions (L1, L2, ..., Ln). For example, when the range hood was in operating position L1, the inlet air velocity at different motor speeds (n1, n2, ..., nn) ​​was v11, v12, ..., v1n; when the range hood was in operating position L2, the inlet air velocity at different motor speeds (n1, n2, ..., nn) ​​was v21, v22, ..., v2n; ...; when the range hood was in operating position Ln, the inlet air velocity at different motor speeds (n1, n2, ..., nn) ​​was vn1, vn2, ..., vnn; and these preset speed-to-air velocity relationships were stored in the controller for later use.

[0046] For example, the specific process of the intelligent control method for the range hood of this application includes the following steps: 1) Taking pictures of oil fumes by multiple first image sensors arranged around the stove and multiple second image sensors arranged in the smoke collection chamber, and combining and fitting the images from each sensor through grayscale values ​​to obtain a three-dimensional model of rising oil fumes; 2) Dividing the three-dimensional model of rising oil fumes into N three-dimensional oil fume bodies at equal intervals in the vertical direction, the volumes of which from top to bottom are V1, V2...V N3) Read the current motor speed n0 and current operating speed L0 of the range hood; 4) Sequentially determine whether the current motor speed n0 satisfies ni≤n0<n(i+1) until the motor speed range of the current motor speed n0 is obtained; 5) Sequentially determine whether the volume V1 of the first three-dimensional oil fume satisfies VEi≤V1<VE(i+1) until the volume range of the first three-dimensional oil fume is obtained; 6) Based on the volume range of the first three-dimensional oil fume and the motor speed range of the current motor speed, obtain the range hood speed corresponding to the first three-dimensional oil fume through the preset volume-speed relationship; 7) Based on the current motor speed of the range hood... 8) Based on the three-dimensional model of rising fumes, obtain the current air inlet speed v0 by using the preset speed-wind speed relationship; 9) Calculate the delay adjustment time t1 corresponding to the gear position of the first three-dimensional fumes body using t1=d1 / v0; 10) After time t1, adjust the operating gear of the range hood to the gear position corresponding to the first three-dimensional fumes body; 11) Return to step 3) above to sequentially output the gear positions and delay adjustment times t2, t3, ..., t4 corresponding to the second, third, ..., Nth three-dimensional fumes bodies. n And sequentially at intervals t2, t3, ..., t n After a certain time, adjust the range hood's operating level to the level corresponding to the second, third, ..., Nth three-dimensional oil fume volume; 12) Determine if the range hood is working: if not, end control; if yes, then at intervals t1+t2+t3+...+t n-1 After a certain time, return to step 1 above to repeat the control work.

[0047] It is worth mentioning that, according to another aspect of this application, such as Figure 6 As shown, one embodiment of this application further provides an intelligent control system 30 for a range hood, which may include a model building module 31 for constructing a three-dimensional model of rising oil fumes based on oil fume data collected by the sensor components of the range hood; a model segmentation module 32 for horizontally segmenting the three-dimensional model of rising oil fumes into multiple three-dimensional oil fume bodies along the vertical direction to obtain the volume of each three-dimensional oil fume body; a gear setting and time determination module 33 for determining the range hood gear setting and delay adjustment time corresponding to each three-dimensional oil fume body based on the motor speed of the range hood and a preset volume gear setting relationship; and a gear setting adjustment module 34 for dynamically adjusting the operating gear of the range hood to the gear setting corresponding to each three-dimensional oil fume body after sequentially at intervals corresponding to the delay adjustment time, so that the operating gear setting of the range hood can always match the gear setting corresponding to each three-dimensional oil fume body.

[0048] For example, the gear setting time determination module 33 can be used to read the current motor speed and current operating gear of the range hood, determine the range hood gear corresponding to the current three-dimensional oil fume through a preset volume gear relationship, and determine the current air inlet speed through a preset speed-wind speed relationship; calculate the delay adjustment time of the gear corresponding to the current three-dimensional oil fume based on the current oil fume control distance and the current air inlet speed; after the operating gear of the range hood is adjusted to the gear corresponding to the current three-dimensional oil fume, read the motor speed of the range hood again as the next motor speed, determine the range hood gear corresponding to the next three-dimensional oil fume through a preset volume gear relationship, and determine the next air inlet speed through a preset speed-wind speed relationship; and calculate the delay adjustment time of the gear corresponding to the next three-dimensional oil fume based on the next oil fume control distance and the next air inlet speed.

[0049] It is worth mentioning that, according to another aspect of this application, such as Figures 7 to 9 As shown, one embodiment of this application further provides a range hood, which may include a range hood body 10, a sensor assembly 20, and an intelligent control system 30 for the range hood. The range hood body 10 includes a fan system 11 and a smoke collection chamber 12 disposed below the fan system 11. The sensor assembly 20 includes a plurality of first image sensors 21 disposed in the smoke collection chamber 12 and a plurality of second image sensors 22 disposed around the cooktop 40. The intelligent control system 30 of the range hood is communicatively connected to the fan system 11 and the sensor assembly 20 to accurately detect the current amount of oil fumes and dynamically adjust the speed according to the real-time amount of oil fumes, so as to provide the best noise experience for the user while ensuring that the oil fumes are completely extracted.

[0050] For example, such as Figure 7 and Figure 9 As shown, the smoke collection chamber 12 may include a housing 121 connected to the fan system 11 and having an air inlet 120, and a smoke baffle assembly 122 rotatably disposed on the housing 121; two first image sensors 21 are installed on the housing 121 and located on the left and right sides of the air inlet 120; three first image sensors 21 are installed on the inner side of the smoke baffle assembly 122. Furthermore, as... Figure 7 and Figure 8 As shown, four second image sensors 22 are respectively arranged at the four corners of the stove 40, and two second image sensors 22 are respectively arranged at the middle of the long side of the stove 40, so as to accurately obtain the three-dimensional model of the oil fume rising under the range hood through multi-angle and multi-position image sensors. Then, by horizontally subdividing the three-dimensional model of the oil fume rising, the foundation is laid for subsequent real-time fine-tuning of the gear.

[0051] It is worth noting that the range hood of this application can also be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the range hood to perform corresponding operations, thereby realizing the intelligent control of the range hood and improving the user experience.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are quite specific and detailed. However, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. An intelligent control method for a range hood, characterized in that, Including the following steps: A three-dimensional model of rising oil fumes is constructed based on the oil fume data collected by the sensor components of the range hood. The three-dimensional model of rising oil fumes is divided horizontally into multiple three-dimensional oil fume volumes along the vertical direction to obtain the volume of each three-dimensional oil fume volume; Based on the relationship between the motor speed of the range hood and the preset volume level, the range hood level and delay adjustment time corresponding to each three-dimensional volume of oil fumes are determined sequentially. as well as After sequentially adjusting the delay time corresponding to each three-dimensional oil fume, the operating level of the range hood is dynamically adjusted to the range hood level corresponding to each three-dimensional oil fume, so that the operating level of the range hood can always match the range hood level corresponding to each three-dimensional oil fume.

2. The intelligent control method for a range hood according to claim 1, characterized in that, In the step of horizontally dividing the three-dimensional model of rising oil fumes along the vertical direction into multiple three-dimensional oil fume bodies to obtain the volume of each three-dimensional oil fume body: the three-dimensional model of rising oil fumes is horizontally divided into N three-dimensional oil fume bodies, such that the height of each three-dimensional oil fume body is the same.

3. The intelligent control method for a range hood according to claim 1 or 2, characterized in that, The step of determining the range hood speed and delay adjustment time corresponding to each three-dimensional volume of cooking fumes based on the relationship between the range hood motor speed and the preset volume level includes the following steps: Read the current motor speed and current operating level of the range hood, determine the range hood level corresponding to the current three-dimensional volume of oil fumes through the preset volume level relationship, and determine the current air inlet wind speed through the preset speed and wind speed relationship; Based on the current fume control distance and the current air inlet wind speed, the delay adjustment time corresponding to the current three-dimensional fume volume is calculated. After the range hood's operating level is adjusted to the level corresponding to the current three-dimensional volume of oil fumes, the range hood's motor speed is read again as the next motor speed. The range hood level corresponding to the next three-dimensional volume of oil fumes is determined through the preset volume level relationship, and the next air inlet wind speed is determined through the preset speed wind speed relationship. as well as Based on the next oil fume control distance and the next air inlet wind speed, the delay adjustment time corresponding to the next three-dimensional oil fume volume is calculated.

4. The intelligent control method for a range hood according to claim 3, characterized in that, The current fume control distance is the vertical distance between the current three-dimensional fume volume and the air inlet of the range hood at the current time; the next fume control distance is equal to the height of the current three-dimensional fume volume.

5. The intelligent control method for a range hood according to claim 3, characterized in that, The steps of reading the current motor speed and current operating level of the range hood, determining the range hood level corresponding to the current three-dimensional volume of cooking fumes through a preset volume-level relationship, and determining the current air inlet wind speed through a preset speed-wind speed relationship include the following steps: Determine the preset motor speed range corresponding to the current motor speed, and use it as the current motor speed range; Based on the current motor speed range, retrieve the preset volume gear relationship within the current motor speed range; Based on the current volume of the three-dimensional oil fume, the range hood setting corresponding to the current three-dimensional oil fume is determined by the retrieved volume setting relationship; as well as Based on the current motor speed and current operating level of the range hood, the current air inlet speed is determined through a preset speed-wind speed relationship.

6. The intelligent control method for a range hood according to claim 3, characterized in that, The steps of determining the range hood speed corresponding to the current three-dimensional volume of cooking fumes after the range hood's operating speed is adjusted to the corresponding speed, reading the range hood's motor speed again as the next motor speed, determining the range hood speed corresponding to the next three-dimensional volume of cooking fumes through a preset volume-level relationship, and determining the next air inlet speed through a preset speed-wind speed relationship, include the following steps: Determine the preset motor speed range corresponding to the next motor speed, and use it as the next motor speed range; Based on the next motor speed range, the preset volume gear relationship under the next motor speed range is retrieved; Based on the volume of the next three-dimensional volume of oil fume, the range hood setting corresponding to the next three-dimensional volume of oil fume is determined by the retrieved volume setting relationship; as well as Based on the range hood speed and motor speed corresponding to the current three-dimensional volume of oil fumes, the next air inlet speed is determined through a preset speed-wind speed relationship.

7. The intelligent control method for a range hood according to claim 3, characterized in that, The step of dynamically adjusting the operating level of the range hood to the level corresponding to each three-dimensional oil fume after sequentially adjusting the delay time corresponding to each three-dimensional oil fume, so that the operating level of the range hood can always match the level corresponding to each three-dimensional oil fume, includes the following steps: First, after a delay of the time interval corresponding to the current three-dimensional smoke level, adjust the operating level of the range hood to the level corresponding to the current three-dimensional smoke level; and After a delay adjustment time corresponding to the next three-dimensional oil fume volume, adjust the operating level of the range hood to the level corresponding to the next three-dimensional oil fume volume.

8. The intelligent control method for a range hood according to claim 1 or 2, characterized in that, It also includes the following steps: After summing the delay adjustment times corresponding to the gear positions of multiple three-dimensional oil fume volumes, the three-dimensional oil fume rising model is reconstructed to repeat the above steps.

9. An intelligent control system for a range hood, characterized in that, Including those that are communicatively connected: The model building module is used to construct a three-dimensional model of rising oil fumes based on the oil fume data collected by the sensor components of the range hood. The model segmentation module is used to horizontally segment the three-dimensional model of rising oil fumes along the vertical direction into multiple three-dimensional oil fume volumes to obtain the volume of each three-dimensional oil fume volume; The gear setting and time determination module is used to determine the range hood gear and delay adjustment time corresponding to each three-dimensional volume of oil fumes based on the motor speed of the range hood and the preset volume gear relationship. as well as The gear adjustment module is used to dynamically adjust the operating gear of the range hood to the gear corresponding to each three-dimensional oil fume after sequentially adjusting the delay time corresponding to each three-dimensional oil fume, so that the operating gear of the range hood can always match the gear corresponding to each three-dimensional oil fume.

10. A range hood, characterized in that, include: The main body of the smoke hood includes a fan system and a smoke collection chamber disposed below the fan system; The sensor assembly includes a plurality of first image sensors arranged in the smoke collection chamber and a plurality of second image sensors arranged around the cooktop; as well as The intelligent control system of the range hood as described in claim 9, wherein the intelligent control system of the range hood is communicatively connected to the fan system and the sensor assembly.

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