CN110617525A

CN110617525A - Kitchen appliance, control method thereof, and computer-readable storage medium

Info

Publication number: CN110617525A
Application number: CN201910910921.4A
Authority: CN
Inventors: 刘玉磊; 陈寅之; 杨明检; 程刚; 高鹏
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2019-12-27
Also published as: WO2021056838A1

Abstract

The invention discloses a kitchen device, a control method thereof and a computer readable storage medium. The control method is used for kitchen equipment. The kitchen equipment comprises an oil smoke air duct and an oil smoke detection assembly. A fan component is arranged in the oil smoke air channel. The oil smoke detection assembly is used for detecting oil smoke in the oil smoke air channel and outputting a smoke quantity signal. The control method comprises the following steps: judging whether the fluctuation of the smoke quantity signal in the preset time length is in a smoke range or a smoke-free range; determining the working state of the fan assembly according to the working state parameters of the fan assembly under the condition that the fluctuation of the smoke quantity signal within the preset time length is in a smoke range or a smoke-free range; controlling the kitchen appliance according to the determined operating state of the fan assembly. The control method can reduce the interference of external environmental factors on oil smoke detection, and improve the detection precision and the oil smoke exhaust effect.

Description

Kitchen appliance, control method thereof, and computer-readable storage medium

Technical Field

The invention relates to the technical field of kitchen equipment, in particular to kitchen equipment, a control method thereof and a computer readable storage medium.

Background

In the correlation technique, the lampblack absorber is mostly manual switch control, and the user can adjust the fan gear according to the size of oil smoke in order to adjust the fan amount of wind, can cause the use inconvenient when the culinary art. In addition, although some range hoods can automatically adjust the air volume by detecting the oil smoke or the air pressure of the air duct, the range hoods are easily interfered by external environmental factors, the detection precision is not high, and the oil smoke exhaust effect is poor.

Disclosure of Invention

The invention provides a kitchen device, a control method thereof and a computer readable storage medium.

The control method of the embodiment of the invention is used for kitchen equipment, the kitchen equipment comprises an oil smoke air duct and an oil smoke detection assembly, a fan assembly is arranged in the oil smoke air duct, the oil smoke detection assembly is used for detecting oil smoke in the oil smoke air duct and outputting a smoke volume signal, and the control method comprises the following steps:

judging whether the fluctuation of the smoke quantity signal in a preset time length is in a smoke range or a smoke-free range;

determining the working state of the fan assembly according to the working state parameters of the fan assembly under the condition that the fluctuation of the smoke volume signal within the preset time length is within the smoke range or the smoke-free range;

controlling the kitchen appliance in accordance with the determined operating condition of the fan assembly.

According to the control method of the kitchen equipment, provided by the embodiment of the invention, because the quantity of the oil smoke particles in the oil smoke can change the smoke quantity signal output by the oil smoke detection assembly, and the oil smoke concentration fluctuates slightly in the uncooked stage and can fluctuate greatly in the cooking process, the working state of the fan assembly can be determined according to the working state parameters related to the smoke quantity signal under the condition that the fluctuation of the smoke quantity signal output by the oil smoke detection assembly in the preset time length is in the smoke range or the smoke-free range. Therefore, the interference of external environmental factors on oil smoke detection can be reduced, and the detection precision and the oil smoke exhaust effect are improved.

In certain embodiments, the control method comprises: and determining the working state parameters of the fan assembly according to the smoke quantity signal under the condition that the smoke quantity signal is in a preset range.

Therefore, the smoke quantity signal can be accurate, and the accuracy of controlling kitchen equipment is guaranteed.

In some embodiments, the preset range includes a plurality of sub-ranges, each sub-range corresponds to the operating state parameter, and in the case that the smoke volume signal is within the preset range, determining the operating state parameter of the fan assembly according to the smoke volume signal includes:

and determining the corresponding working state parameter according to the sub-range in which the smoke volume signal is positioned.

So, according to the size matching suitable operating condition parameter of the volume of cigarette signal, make the operating condition of the fan subassembly of confirming according to the operating condition parameter accord with kitchen equipment's actual demand more.

In certain embodiments, the smoke range is determined by the operating condition parameter corresponding to the sub-range.

Therefore, the smoke range is determined according to the working state parameters, and the control of the kitchen equipment (such as air volume control of a fan) is more in line with the actual requirements of the kitchen equipment.

In some embodiments, the operating condition parameter includes a first threshold and a second threshold, and determining whether the fluctuation of the smoke volume signal within a preset time period is in a smoke range or a smoke-free range includes:

processing the smoke volume signal to obtain a numerical trend and numerical variation characteristics of the smoke volume signal;

determining that the fluctuation of the smoke volume signal is in the smoke range under the condition that the trend of the smoke volume signal is not smaller than the first threshold value and the numerical variation characteristic of the smoke volume signal is not smaller than the second threshold value within the preset time length;

and determining that the fluctuation of the smoke volume signal is in the smokeless range under the condition that the numerical trend of the smoke volume signal is smaller than the first threshold value or the numerical change characteristic of the smoke volume signal is smaller than the second threshold value in the preset time length.

Therefore, the fluctuation of the smoke quantity signal in the preset time length is determined to be in the smoke range according to the numerical trend of the smoke quantity signal and the size of the numerical change characteristic, the judgment is accurate, the smoke-free range is determined, and the control of the smoke-free range of the kitchen equipment is facilitated.

In some embodiments, the operational state of the fan assembly includes an air volume of the fan assembly, the air volume of the fan assembly having a linear relationship with a numerical trend of the smoke volume signal.

So, make the amount of wind of fan subassembly satisfy the oil extraction cigarette demand, kitchen equipment's oil extraction cigarette effect preferred.

In certain embodiments, the control method comprises:

and before determining the working state parameter according to the smoke quantity signal, carrying out filtering processing on the smoke quantity signal.

Therefore, interference signals in the smoke quantity signals are removed, the working state parameters are determined according to the filtered smoke quantity signals, and the working state of the fan assembly determined according to the working state parameters is more in line with the actual requirements of kitchen equipment.

In certain embodiments, the control method comprises: and controlling the kitchen equipment to send out a fault prompt under the condition that the smoke quantity signal exceeds the preset range.

So, under the condition that oil smoke determine module can not normally work, send the suggestion of breaking down so that the maintenance.

In certain embodiments, the control method comprises: and under the condition that the fluctuation of the smoke quantity signal is in the smokeless range, controlling the kitchen equipment according to the working state of a preset fan assembly.

Thus, the kitchen equipment is directly controlled by the preset working state of the fan assembly, and the further determined working state of the fan assembly is not needed.

The kitchen equipment comprises an oil smoke air duct, an oil smoke detection assembly and a controller, wherein a fan assembly is arranged in the oil smoke air duct, the oil smoke detection assembly is used for detecting oil smoke in the oil smoke air duct and outputting smoke volume signals, the controller is used for judging whether fluctuation of the smoke volume signals in a preset time length is in a smoke range or a smoke-free range, and determining the working state of the fan assembly according to working state parameters of the fan assembly and controlling the kitchen equipment according to the determined working state of the fan assembly under the condition that the fluctuation of the smoke volume signals in the preset time length is in the smoke range or the smoke-free range.

According to the kitchen equipment provided by the embodiment of the invention, as the oil smoke particles in the oil smoke can influence the intensity of the light emitted by the light emitter received by the light receiver, the smoke quantity signal output by the light receiver changes, the oil smoke concentration fluctuates slightly in the uncooked stage, and the oil smoke concentration fluctuates greatly in the cooking process, the air quantity of the fan can be determined according to the working state parameters related to the smoke quantity signal under the condition that the fluctuation of the smoke quantity signal output by the light receiver in the preset time length is in the smoke range. Therefore, the interference of external environmental factors on oil smoke detection can be reduced, and the detection precision and the oil smoke exhaust effect are improved.

In some embodiments, the controller is configured to determine an operating condition parameter of the fan assembly based on the smoke volume signal if the smoke volume signal is within a predetermined range.

In some embodiments, the preset range comprises a plurality of sub-ranges, each sub-range corresponding to the operating condition parameter, and the controller is configured to determine the corresponding operating condition parameter according to the sub-range in which the smoke volume signal is located.

In some embodiments, the operating condition parameter includes a first threshold and a second threshold, the controller is configured to process the smoke volume signal to obtain a numerical trend and a numerical variation characteristic of the smoke volume signal, and to determine that the fluctuation of the smoke volume signal is in the smoke range if the trend of the smoke volume signal is not less than the first threshold and the numerical variation characteristic of the smoke volume signal is not less than the second threshold for the preset time period, and to determine that the fluctuation of the smoke volume signal is in the smoke-free range if the numerical trend of the smoke volume signal is less than the first threshold or the numerical variation characteristic of the smoke volume signal is less than the second threshold for the preset time period.

In some embodiments, the controller is configured to filter the smoke volume signal prior to determining the operating condition parameter from the smoke volume signal.

In some embodiments, the controller is configured to control the kitchen appliance to issue a fault notification if the smoke volume signal is outside the preset range.

In some embodiments, the controller is configured to control the kitchen appliance according to a preset operating state of the fan assembly if the fluctuation of the smoke volume signal is within the smokeless range.

The computer-readable storage medium of an embodiment of the present invention has a computer program stored thereon, which when executed by a processor, implements the steps of the control method of any of the above-described embodiments.

According to the computer-readable storage medium of the embodiment of the invention, because the oil smoke particles in the oil smoke can influence the intensity of the light emitted by the light emitter received by the light receiver, so that the smoke quantity signal output by the light receiver changes, and the oil smoke concentration fluctuates slightly in the uncooked stage and fluctuates greatly in the cooking process, the air quantity of the fan can be determined according to the working state parameters related to the smoke quantity signal under the condition that the fluctuation of the smoke quantity signal output by the light receiver in the preset time length is in the smoke range. Therefore, the interference of external environmental factors on oil smoke detection can be reduced, and the detection precision and the oil smoke exhaust effect are improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a flowchart illustrating a control method of a kitchen appliance according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a kitchen appliance according to an embodiment of the present invention;

FIG. 3 is another schematic illustration of a kitchen appliance in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of a portion of a kitchen appliance in accordance with an embodiment of the present invention;

FIG. 5 is a schematic diagram of the relationship between the concentration of soot and time in the kitchen device according to the embodiment of the present invention;

fig. 6 to 9 are flow charts illustrating a method of controlling a kitchen appliance according to an embodiment of the present invention.

Description of the main element symbols:

kitchen equipment 100, box 10, check valve 20, check valve wind channel 22, oil smoke detection component 30, light emitter 32, light receiver 34, fan component 40, volute 42, volute wind channel 422, air outlet 424, fan 44, controller 50, terminal box 60, casing 62, oil smoke granule 200.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, embodiments of the invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 4, a control method according to an embodiment of the present invention is applied to a kitchen appliance 100. The kitchen appliance 100 includes, but is not limited to, a range hood, an integrated range, and the like having a smoke exhaust function. In the illustrated embodiment, the kitchen device 100 is described by taking a range hood as an example.

The kitchen equipment 100 may be a variable frequency range hood, and the kitchen equipment 100 may be an upper-discharge range hood, a lower-discharge range hood, or a side-discharge range hood. The kitchen device 100 includes a cabinet 10, a check valve 20, a smoke detecting assembly 30, and a smoke duct. A check valve 20 is connected to the top of the case 10, and a check valve wind passage 22 is formed in the check valve 20. A fan assembly 40 is disposed within the housing 10, the fan assembly 40 including a volute 42 and a fan 44 disposed within the volute 42. A volute duct 422 is formed in the volute 42, and the volute 42 includes an air outlet 424 communicated with the volute duct 422. The oil smoke duct includes a volute duct 422 and a check valve duct 22 in communication. It will be appreciated that the fan 44 is disposed within the volute 42, that is, the fan 44 is disposed within the cooking fume duct.

In the illustrated embodiment, the smoke detection assembly 30 is a light detection assembly, and in particular, the smoke detection assembly 30 includes a light emitter 32 and a light receiver 34. The light emitter 32 is used for emitting light to the lampblack air channel, and the light receiver 34 is used for receiving the light emitted by the light emitter 32 and outputting a smoke quantity signal according to the received light. The light detecting component is not limited herein, and may be, for example, an infrared detecting component or a laser detecting component. The following embodiments describe the oil smoke detection assembly 30 as an infrared detection assembly in detail. In other embodiments, the smoke detection component can include an organic molecule sensor (VOC sensor). The oil smoke contains organic molecules and oil smoke particles, and generally, the concentration of the organic molecules is in direct proportion to the concentration of the oil smoke particles, so that the concentration of the oil smoke can be detected by detecting the concentration of the organic molecules. The organic matter molecule sensor can detect the concentration of organic matter molecules contained in the oil smoke and output smoke quantity signals.

It can be understood that the particle size span of the soot particles 200 is 100nm to 10 um. The soot particles 200 can cause shadowing, scattering, and diffraction of infrared light as they pass on the path of infrared light emitted by the light emitter 32. That is, the soot particles 200 may affect the intensity of the light emitted by the light emitter 32 received by the light receiver 34, so that the smoke amount signal output by the light receiver 34 changes. Therefore, the soot concentration can be characterized using the smoke amount signal (light intensity signal) of the light receiver 34. The light receiver 34 may convert the output analog signal into a digital signal, and the smoke amount signal refers to an AD value (a value of converting the analog signal into the digital signal) output by the light receiver 34. The soot concentration refers to the concentration of soot particles 200 in the soot.

The smoke detection assembly 30 may be disposed at the volute 42 and/or the check valve 20 to detect the smoke concentration of the volute air channel 422 and/or the smoke concentration of the check valve air channel 22. In the example of fig. 2, the smoke detection assembly 30 is disposed at the check valve 20, and in the example of fig. 3, the smoke detection assembly 30 is disposed at the volute 42 and the check valve 20. Of course, the smoke detecting assembly 30 can also be disposed at other positions of the kitchen apparatus 100, such as a smoke collecting cavity and a smoke tube, where the smoke concentration in the smoke duct can be detected. It is understood that the smoke detection assembly 30 may be disposed on any one or more of the volute 42, the check valve 20, the smoke collection chamber, and the smoke tube.

The smoke detection assembly 30 may include one detection pair or two detection pairs or more than two detection pairs, each detection pair may include one optical receiver and one optical transmitter, and may also include a plurality of optical transmitters and one optical receiver. In the example of fig. 3, the number of detection pairs is two, wherein the optical emitter 32 and the optical receiver 34 of one detection pair are respectively disposed on the left and right sides of the check valve 20, and the optical emitter 32 and the optical receiver 34 of the other detection pair are respectively disposed on the left and right sides of the scroll casing 42 near the air outlet 424. Of course, the smoke detection assembly 30 may be disposed at other locations of the check valve 20 or other locations of the volute 42. In the present embodiment, the central axis of the light emitter 32 and the central axis of the light receiver 34 are located on the same line and intersect with the central axis of the outlet of the check valve 20. In this embodiment, the soot concentration and the smoke amount signal have an inverse correlation, and a larger smoke amount signal indicates a smaller soot concentration. It is understood that in other embodiments, the relationship between the soot concentration and the soot amount signal may be calibrated in other manners.

In the illustrated example, the outlet of the check valve 20 is circular, and the central axis of the outlet of the check valve 20 may refer to an axis passing through the center of a circle and perpendicular to the plane where the outlet of the check valve 20 is located. In other examples, the outlet of the check valve 20 may be in other regular or irregular shapes, such as square, oval, regular polygon, triangle, etc. For a square, the central axis of the outlet opening of the check valve 20 refers to an axis perpendicular to the plane of the outlet opening of the check valve 20 and passing through the intersection of the diagonals of the square. For an oval shape, the central axis of the outlet opening of the check valve 20 may refer to an axis perpendicular to the plane of the outlet opening of the check valve 20 and passing through any focal point of the oval shape. For regular polygon, the central axis Z of the air outlet of the check valve 20 may refer to an axis perpendicular to the plane where the air outlet of the check valve 20 is located and passing through the center of the circumscribed circle or the inscribed circle of the regular polygon. The central axis of the air outlet of the check valve 20 may refer to an axis perpendicular to the plane of the air outlet of the check valve 20 and passing through the irregular shape to circumscribe the center of the largest circle or inscribe the center of the smallest circle, and so on. For the present invention, the light emitter 32 and the light receiver 34 provided with the scroll casing may also be provided as described above.

In the example of fig. 4, the number of detection pairs is one, and the detection pairs include one optical transmitter 32 and one optical receiver 34, which are spaced apart from the check valve 20. The central axis of the light emitter 32 and the central axis of the light receiver 34 intersect with the central axis of the air outlet of the check valve 20, and the range of the included angle formed by the intersection of the central axis of the light emitter 32 and the central axis of the light receiver 34 is (0 degrees, 180 degrees). It will be appreciated that the light emitters 32 and light receivers 34 are staggered to form a predetermined angle, and that the infrared light emitted from the light emitters 32 can pass through the check valve duct 22 and be scattered by the soot particles 200 so that the infrared light can be received by the light receivers 34. According to the meter scattering theory, in the case that the light emitters 32 and the light receivers 34 are alternately arranged to form a preset included angle, when there are no soot particles 200 in the inner region of the check valve 20, almost no infrared light is received by the light receivers 34, and the intensity of the light received by the light receivers 34 is weak. When soot particles 200 are present in the inner area of the check valve 20, infrared light emitted from the light emitter 32 is scattered by the soot particles 200, and a portion of the infrared light is received by the light receiver 34, so that the intensity of the light received by the light receiver 34 is relatively strong. In this embodiment, the smoke concentration and the smoke volume signal have a positive correlation, and the larger the smoke volume signal is, the larger the smoke concentration is. It is understood that in other embodiments, the relationship between the soot concentration and the soot amount signal may be calibrated in other manners.

Referring to fig. 1, the control method includes:

step S14: judging whether the fluctuation of the smoke quantity signal in the preset time length is in a smoke range or a smoke-free range;

step S16: under the condition that the fluctuation of the smoke quantity signal within the preset time length is in a smoke range or a smoke-free range, determining the working state of the fan assembly 40 according to the working state parameters of the fan assembly 40;

step S18: the kitchen appliance 100 is controlled based on the determined operating condition of the fan assembly 40.

In the control method of the kitchen apparatus 100 according to the embodiment of the present invention, since the amount of soot particles in the soot may change the soot amount signal output by the soot detection assembly 30, and the soot concentration fluctuates slightly in the uncooked stage, and the soot concentration fluctuates greatly in the cooking process, the operating state of the fan assembly 40 may be determined according to the operating state parameter related to the soot amount signal when the fluctuation of the soot amount signal output by the soot detection assembly 30 in the preset time period is within the soot range. Therefore, the interference of external environmental factors on oil smoke detection can be reduced, and the detection precision and the oil smoke exhaust effect are improved.

In the illustrated embodiment, the determination as to whether or not the smoke is in the smoke range and the determination as to whether or not the smoke is in the smoke range will be described. In other embodiments, the control method may include: judging whether the fluctuation of the smoke quantity signal in a preset time length is in a smokeless range or not; under the condition that the fluctuation of the smoke quantity signal within the preset time is in the smokeless range, determining the working state of the fan assembly 40 according to the working state parameters of the fan assembly 40; the kitchen appliance 100 is controlled based on the determined operating condition of the fan assembly 40.

In the present embodiment, the kitchen appliance may be controlled according to the determined operating state of the fan assembly 40, such as controlling the operation of the fan 44 (e.g., controlling the voltage, current, power, rotation speed, air volume, etc. of the fan 44), opening and closing the panel, lifting the panel, alarming the kitchen appliance 100, etc. In some embodiments, the kitchen device 100 may include a movable panel for opening and closing a smoke port of the kitchen device 100, the movement of the panel may include rotation and translation, and the alarm may be an audible and visual alarm, such as may be emitted by a display screen, indicator lights, and/or speakers of the kitchen device 100. In this example, the operation status parameter of the fan assembly 40 includes an air volume parameter of the fan, the operation status of the fan assembly 40 includes an air volume of the fan 44, and the air volume of the fan 44 is controlled. In other embodiments, the opening and closing degree, the lifting degree, and the alarm of the panel may correspond to the air volume of the fan 44, for example, the air volume is large, the degree of opening the smoke outlet is large, the air volume is small, the degree of opening the smoke outlet is small, and when the air volume of the fan 44 exceeds a threshold value, it indicates that the amount of oil smoke is large, and the kitchen device 100 is controlled to alarm to remind the user that there is much oil smoke in the current environment.

Referring to fig. 5, during the cooking process, the kitchen apparatus 100 is operated, and the concentration of the soot in the soot duct changes with time. In one example, the smoke volume signal output by the light receiver 34 may be used directly to indicate the level of smoke concentration. The kitchen device 100 can form the smoke volume signal output by the light receiver 34 into a two-dimensional curve of smoke concentration and time. In a static state (uncooked state), the oil smoke concentration is small and close to zero; when heating (beginning cooking stage), oil smoke particles 200 are gradually generated, and the oil smoke concentration slowly rises; when dishes are placed (cooking stage), a large amount of oil smoke particles 200 are generated instantly, and the oil smoke concentration rises rapidly; when stir-frying, the oil smoke concentration can be greatly changed; during the process of shutting off the fire and exhausting the air (ending the cooking stage), the oil smoke particles 200 are gradually exhausted, and the concentration of the oil smoke is reduced.

As can be seen from fig. 5, in the uncooked stage, the soot concentration (smoke volume signal) fluctuates slightly; during cooking, the oil smoke concentration (smoke volume signal) fluctuates greatly. Therefore, whether the oil smoke channel has oil smoke can be judged according to the fluctuation of the smoke quantity signal in the preset time, and under the condition that the fluctuation of the smoke quantity signal in the preset time is in a smoke range, the air quantity of the fan 44 is determined according to the working state parameters related to the smoke quantity signal, so that the aims of improving the detection precision of the oil smoke and the oil smoke exhaust effect are fulfilled. In the example of fig. 5, the smoke volume signal is a light intensity signal.

Referring to fig. 6, in some embodiments, the control method includes: step S12: and under the condition that the smoke quantity signal is in a preset range, determining the working state parameter of the fan assembly 40 according to the smoke quantity signal. Therefore, the smoke quantity signal can be accurate, and the accuracy of controlling kitchen equipment is guaranteed.

Specifically, the preset range may refer to a range of a smoke amount signal output by the optical receiver 34 when the smoke detecting assembly 30 is in normal use. In one example, the predetermined range is 2000-.

Referring to fig. 7, before step S12, the control method further includes step S11, step S13 and step S15. Wherein, step S11: acquiring a smoke quantity signal output by the optical receiver 34; step S13: judging whether the smoke quantity signal is in a preset range or not; step S15: and under the condition that the smoke quantity signal is in a preset range, filtering the smoke quantity signal. In this way, the interference signal in the smoke volume signal is removed, and the operating condition parameter is determined according to the filtered smoke volume signal, so that the operating condition of the fan assembly 40 determined according to the operating condition parameter more meets the actual requirement of the kitchen equipment 100. Specifically, the filtering process may use an IIR filter, an FIR filter, or another filter to filter the smoke volume signal output by the light receiver 34, and is not particularly limited herein.

Further, the control method includes step S17: and controlling the kitchen equipment 100 to give a fault prompt when the smoke quantity signal exceeds a preset range. So, under the condition that oil smoke determine module 30 can not normally work, send the suggestion of trouble so that the maintenance. It can be understood that the smoke amount signal exceeds the preset range, i.e. the light intensity is too strong or too small, in which case the smoke detecting component 30 is considered to be abnormal, and a fault indication is required. The kitchen appliance 100 includes a display device and/or a speaker. In the case that the smoke amount signal output by the light receiver 34 is out of the preset range, indicating that the smoke detection assembly 30 and/or the kitchen equipment 100 is out of order, a fault indication may be given through a display device and/or a speaker. Specifically, the display device may display "suspected malfunction of the soot detection assembly 30/kitchen device 100, please overhaul" or the like, and the speaker may issue a buzzer sound prompt or voice broadcast "suspected malfunction of the soot detection assembly 30/kitchen device 100, please overhaul" or the like, and the specific prompt form is not limited herein. Further, the fault prompt may also be sent by the kitchen device 100 to a preset terminal, and the preset terminal prompts the fault prompt. The default terminal includes, but is not limited to, a mobile phone, a tablet computer, a wearable smart device, a personal computer, a notebook computer, other household appliances (such as a refrigerator, a washing machine, an air conditioner, a dishwasher, a television, etc.), and the like. The preset terminal may be registered with information of the kitchen device 100.

Further, the control method includes step S19: in the case where the fluctuation of the smoke volume signal is in the smokeless range, the kitchen appliance 100 is controlled according to a preset operating state of the fan assembly 40. In this manner, the kitchen appliance 100 is controlled directly with the preset operating state of the fan assembly 40 without further determination of the operating state of the fan assembly 40. Specifically, in the present embodiment, the operation of the blower 44 is controlled according to a preset air volume. The blower 44 includes two or more stages of air volumes. In one example, the blower 44 includes three levels of airflow, such as low level airflow, medium level airflow, and high level airflow. In order to reduce the power of the fan 44 and save energy, the preset air volume may be set as the low-level air volume of the fan 44, i.e., the lowest air volume. Of course, the preset air volume may be set to an air volume of another gear, such as a middle gear air volume of the fan 44.

It should be noted that the kitchen device 100 according to the embodiment of the present invention requires the user to turn on the power switch of the kitchen device 100 to start the operation.

Referring to fig. 8, in some embodiments, the predetermined range includes a plurality of sub-ranges, and each sub-range corresponds to an operating state parameter. In the case where the smoke amount signal is in the preset range, step S12 includes step S122: and determining corresponding working state parameters according to the sub-range of the smoke quantity signal.

Thus, the proper working state parameters are matched according to the smoke quantity signals, so that the working state of the fan assembly 40 determined according to the working state parameters is more in line with the actual requirements of kitchen equipment.

It can be understood that, in actual production, due to the difference of the soot detecting elements 30, the smoke amount signals outputted by different light receivers 34 without the soot particles 200 have a large difference, that is, the reference of different soot detecting elements 30 is different. When the same concentration of soot is detected, the soot amount signals output from the soot detecting elements 30 with different standards have different values. When the smoke quantity signal is large, the fluctuation of the smoke quantity signal in the preset time length is large, and when the smoke quantity signal is small, the fluctuation of the smoke quantity signal in the preset time length is small. Therefore, the preset range needs to be divided into a plurality of sub-ranges according to the size of the smoke volume signal, each sub-range is correspondingly matched with different working state parameters, and then the proper working state parameters can be selected according to the size of the smoke volume signal. Thus, the deviation of the detection result caused by the reference deviation of the oil smoke detection assembly 30 can be avoided. The differences of the smoke detection assembly 30 include the difference of the coaxiality of the light guide holes of the light emitter 32 and the light receiver 34, the difference of the luminous intensity of different light emitters 32, the difference of the sensitivity of different light receivers 34, and the like.

In some embodiments, the smoke range is determined by an operating condition parameter corresponding to the sub-range.

In this way, the smoke range is determined according to the working state parameters, so that the control of the kitchen equipment (such as the air volume control of the fan 44) is more consistent with the actual requirement of the kitchen equipment. Specifically, the operating condition parameter includes a first threshold value and a second threshold value. Step S14 includes:

step S142: processing the smoke quantity signal to obtain a numerical trend and numerical variation characteristics of the smoke quantity signal;

step S144: and determining that the fluctuation of the smoke quantity signal is in a smoke range under the conditions that the numerical trend of the smoke quantity signal is not less than a first threshold value and the numerical change characteristic of the smoke quantity signal is not less than a second threshold value within a preset time length.

Therefore, the fluctuation of the smoke quantity signal in the preset time length is determined to be in the smoke range according to the numerical trend of the smoke quantity signal and the magnitude of the numerical change characteristic, and the judgment is accurate.

It can be understood that after the kitchen device 100 turns on the power switch, the smoke detecting component 30 starts to detect the smoke concentration, and the light receiver 34 continuously outputs the smoke amount signal. In step S142, the smoke amount signal output by the optical receiver 34 at the current time and the smoke amount signals output before the current time may be taken to calculate the numerical trend and numerical variation characteristic of the smoke amount signal. In one example, the number of smoke volume signals used to calculate the numerical trend and numerical variation signature is 16. In other examples, the number of smoke volume signals used to calculate the numerical trend and numerical change characteristic may be 20, 24, or other numbers. When the smoke detection assembly 30 includes a plurality of (i.e., two or more) detection pairs, the numerical trend and the numerical variation characteristic of the smoke volume signal output by each optical receiver 34 are calculated respectively, the average value of the numerical trend and the average value of the numerical variation characteristic may be taken as the numerical trend and the numerical variation characteristic required to be adopted in the subsequent step, or the numerical trend and the numerical variation characteristic of the smoke volume signal corresponding to the plurality of optical receivers 34 may be subjected to weight or proportional distribution, and the numerical trend and the numerical variation characteristic required to be adopted in the subsequent step are calculated.

The numerical trend in the embodiments of the present invention may refer to a numerical rate of change of the smoke quantity signal or other parameters that may indicate a numerical trend, and the numerical variation characteristic may also refer to a root mean square or other parameters that may indicate a numerical variation characteristic, and is not particularly limited herein.

Further, step S144 includes step S1442, step S1444, and step S1446. Wherein, the step S1442: judging whether the numerical trend of the smoke quantity signal is not less than a first threshold value and whether the numerical change characteristic of the smoke quantity signal is not less than a second threshold value; step S1444: under the condition that the numerical trend of the smoke quantity signal is not smaller than a first threshold value and the numerical change characteristic of the smoke quantity signal is not smaller than a second threshold value, judging whether the waiting time length exceeds the delay time length or not; step S1446: and under the condition that the waiting time length exceeds the delay time length, judging whether the numerical trend of the smoke quantity signal is not less than the first threshold value and whether the numerical change characteristic of the smoke quantity signal is not less than the second threshold value again. If the determination result in step S1446 is yes, it is determined that the fluctuation of the smoke amount signal is in the smoke range, and the routine proceeds directly to step S162: the operating state of the fan assembly 40 is determined based on the numerical trend of the smoke volume signal.

It can be understood that a certain time period is required for judging whether the numerical trend of the smoke quantity signal is not less than the first threshold and whether the numerical change characteristic of the smoke quantity signal is not less than the second threshold, and the time period is recorded as a judgment time period. After the numerical trend of the smoke quantity signal is determined to be not smaller than the first threshold value and the numerical change characteristic of the smoke quantity signal is determined to be not smaller than the second threshold value for the first time, after the delay time period is waited, whether the numerical trend of the smoke quantity signal is not smaller than the first threshold value and whether the numerical change characteristic of the smoke quantity signal is not smaller than the second threshold value are judged again. Therefore, by judging twice, the misjudgment can be prevented, and the accuracy is improved. The preset time length is equal to the judgment time length + the delay time length + the judgment time length. That is, within the preset time length, whether the numerical trend of the smoke quantity signal is not less than the first threshold value and whether the numerical change characteristic of the smoke quantity signal is not less than the second threshold value are judged. And under the condition that the two judgment results are yes, namely the fluctuation of the smoke quantity signal in the preset time length is in the smoke range.

In one example, the time length required for determining whether the numerical trend of the smoke volume signal is not less than the first threshold and whether the numerical variation characteristic of the smoke volume signal is not less than the second threshold is 5ms, and the delay time length is 40ms, and the preset time length is 50 ms.

In addition, referring to fig. 8, the control method includes: and determining that the fluctuation of the smoke quantity signal is in a smoke-free range under the condition that the numerical trend of the smoke quantity signal is smaller than a first threshold value or the numerical change characteristic of the smoke quantity signal is smaller than a second threshold value within a preset time length. In this manner, a smokeless range is determined, facilitating control of the smokeless range of the kitchen appliance 100. For example, the kitchen appliance 100 is controlled according to a preset operating state of the fan assembly 40.

In some embodiments, the operational status of the fan assembly 40 includes the air flow of the fan assembly 40, and the air flow of the fan assembly 40 is linear with the numerical trend of the smoke volume signal.

Thus, the air volume of the fan assembly 40 meets the requirement of oil smoke exhaust, and the oil smoke exhaust effect of the kitchen equipment 100 is better. Specifically, the air volume of the fan assembly 40 can be understood as the air volume of the fan 44, and the operating condition parameter includes a first preset value and a second preset value. The air Volume calculation formula of the fan 44 is Volume ═ a × rate + B, where Volume represents the air Volume of the fan 44, a represents the first preset value, rate represents the numerical trend of the smoke Volume signal, and B represents the second preset value.

In the invention, the working state parameters comprise a first threshold value T, a second threshold value S, a first preset value A and a second preset value B. The preset range can be divided into two or more sub-ranges, and the working state parameters corresponding to each sub-range are different. Specifically, the preset range may be classified as [ AD1, AD2], [ AD2, AD3], …, [ AD (n-1), AD (n) ]. Wherein, the working state parameters corresponding to [ AD1, AD2] are T1, S1, A1 and B1; working state parameters T2, S2, A2 and B2 corresponding to [ AD2 and AD3 ]; working state parameters Tn-1, Sn-1, An-1, Bn-1 corresponding to [ AD (n-1), AD (n) ]. When AD1 is less than or equal to AD2, T is T1, S is S1, A is A1, B is B1; when AD2 is not less than AD3, taking T-T2, S-S2, A-A2 and B-B2; when AD (n-1) is not less than AD and not more than ADn, taking T as Tn-1, S as Sn-1, A as An-1 and B as Bn-1. Thus, the operating condition parameter can be determined according to the sub-range in which the smoke volume signal is located.

In one example, the predetermined range is 2000-63000, and the smoke concentration of the smoke channel is inversely related to the smoke amount signal output by the light receiver 34. The preset range can be divided into four sub-ranges, wherein the first sub-range 2000-10000 corresponds to the following working state parameters: the first threshold T is T1-600, the second threshold S is S1-1200, the first preset value a is a 1-106, and the second preset value B is B1-104; the second sub-range 10000-: the first threshold T is T2 ═ 600, the second threshold S is S2 ═ 11200, the first preset value a is a2 ═ 88, and the second preset value B is B2 ═ 105; the third sub-range 28000-: the first threshold T is T3 ═ 600, the second threshold S is S3 ═ 1600, the first preset value a is A3 ═ 44, and the second preset value B is B3 ═ 143; the fourth sub-range is 42000-63000, and the corresponding operating status parameters are: the first threshold T is T4-1000, the second threshold S is S4-2000, the first preset value a is a 4-42, and the second preset value B is B4-106.

It should be noted that the specific numerical values listed in the above examples are only for convenience of illustrating the implementation of the present invention and should not be construed as limiting the present invention. Other values may also be used in other examples or embodiments.

Referring to fig. 9, a control method according to an embodiment of the invention will be described as an embodiment. The control method comprises the following steps:

step S101: acquiring a smoke quantity signal output by the optical receiver 34;

step S102: judging whether the smoke volume signal is in a preset range, if so, entering step S103, and if not, entering step S111;

step S103: filtering the smoke quantity signal;

step S104: determining working state parameters according to the sub-range of the filtered smoke quantity signal;

step S105: processing the filtered smoke volume signal to obtain a numerical trend and numerical variation characteristics of the smoke volume signal;

step S106: judging whether the numerical trend of the filtered smoke volume signal is not less than a first threshold value and whether the numerical change characteristic of the smoke volume signal is not less than a second threshold value, if so, entering step S107, otherwise, entering step S112;

step S107: judging whether the waiting time length exceeds the delay time length, if so, entering step S108, and if not, entering step S112;

step S108: judging whether the numerical trend of the filtered smoke volume signal is not less than a first threshold value and whether the numerical change characteristic of the smoke volume signal is not less than a second threshold value, if so, entering step S109, and if not, entering step S112;

step S109: determining the operating state of the fan assembly 40 based on the numerical trend of the filtered smoke volume signal;

step S110: controlling the kitchen appliance 100 according to the determined operating state of the fan assembly 40;

step S111: controlling the kitchen equipment 100 to send out a fault prompt;

step S112: the kitchen appliance 100 is controlled according to a preset operating state of the fan assembly 40.

Referring to fig. 2 to 4, a kitchen device 100 according to an embodiment of the present invention includes a smoke channel, a smoke detecting assembly 30, and a controller 50. A fan assembly 40 is arranged in the oil smoke air channel. The oil smoke detection assembly 30 is used for detecting oil smoke in the oil smoke air duct and outputting a smoke volume signal. The controller 50 is configured to determine whether the fluctuation of the smoke volume signal is within a smoke range or a smoke-free range within a preset time period, determine an operating state of the fan assembly 40 according to the operating state parameter of the fan assembly 40 when the fluctuation of the smoke volume signal is within the smoke range or the smoke-free range within the preset time period, and control the kitchen appliance 100 according to the determined operating state of the fan assembly 40.

In the kitchen apparatus 100 according to the embodiment of the present invention, since the lampblack particles 200 in the lampblack can affect the intensity of the light emitted by the light emitter 32 received by the light receiver 34, so that the smoke volume signal output by the light receiver 34 changes, and the lampblack concentration fluctuates slightly in the uncooked stage and fluctuates greatly in the cooking process, the air volume of the fan 44 can be determined according to the operating state parameter related to the smoke volume signal when the fluctuation of the smoke volume signal output by the light receiver 34 in the preset time period is in the smoke range. Therefore, the interference of external environmental factors on oil smoke detection can be reduced, and the detection precision and the oil smoke exhaust effect are improved.

It is understood that the kitchen appliance 100 further includes a junction box 60, and the junction box 60 is mounted on the top of the cabinet 10. The material of the junction box 60 may be metal or plastic. The junction box 60 includes a housing 62 and a main control board (not shown) located within the housing 62. The controller 50 is disposed on the main control panel, and the smoke amount signal output by the light receiver 34 of the smoke detecting assembly 30 can be transmitted to the controller 50 through a wire. The controller 50 may be a single chip on a main control board, and integrates a processor, a memory, a communication module, and the like.

It should be noted that the explanation and the advantageous effects of the control method of the kitchen appliance 100 according to the above embodiment are also applicable to the kitchen appliance 100 according to the embodiment of the present invention, and are not detailed herein to avoid redundancy. The steps of the control method of the kitchen appliance 100 of the above embodiment may be implemented by the controller 50.

In some embodiments, the controller 50 is configured to determine an operating condition parameter of the fan assembly 40 based on the smoke volume signal if the smoke volume signal is within a predetermined range.

In this way, the smoke volume signal can be made accurate, ensuring accuracy in controlling the kitchen appliance 100.

In some embodiments, the predetermined range includes a plurality of sub-ranges, each sub-range corresponding to an operating condition parameter. The controller 50 is configured to determine the corresponding operating condition parameter according to the sub-range in which the smoke volume signal is located.

In this manner, the proper operating condition parameters are matched according to the smoke volume signal, so that the operating condition of the fan assembly 40 determined according to the operating condition parameters more meets the actual requirements of the kitchen appliance 100.

In this way, the smoke range is determined according to the operating state parameters, so that the control of the kitchen device 100 (such as the air volume control of the fan 44) is more consistent with the actual requirements of the kitchen device 100.

In some embodiments, the operating condition parameter includes a first threshold and a second threshold. The controller 50 is configured to process the smoke volume signal to obtain a numerical trend and a numerical variation characteristic of the smoke volume signal, determine that the fluctuation of the smoke volume signal is in a smoke range in a case where the trend of the smoke volume signal is not less than a first threshold and the numerical variation characteristic of the smoke volume signal is not less than a second threshold within a preset time period, and determine that the fluctuation of the smoke volume signal is in a smoke range in a case where the numerical trend of the smoke volume signal is less than the first threshold or the numerical variation characteristic of the smoke volume signal is less than the second threshold within the preset time period.

Therefore, the fluctuation of the smoke quantity signal within the preset time length is determined to be in the smoke range according to the numerical trend of the smoke quantity signal and the size of the numerical change characteristic, the judgment is accurate, the smoke-free range is determined, and the control of the smoke-free range of the kitchen equipment 100 is facilitated.

Thus, the air volume of the fan assembly 40 meets the requirement of oil smoke exhaust, and the oil smoke exhaust effect of the kitchen equipment 100 is better.

In some embodiments, the controller 50 is configured to filter the smoke signal prior to determining the operating condition parameter from the smoke signal.

In this way, the interference signal in the smoke volume signal is removed, and the operating condition parameter is determined according to the filtered smoke volume signal, so that the operating condition of the fan assembly 40 determined according to the operating condition parameter more meets the actual requirement of the kitchen equipment 100.

In some embodiments, the controller 50 is configured to control the kitchen appliance 100 to issue a fault notification if the smoke volume signal is outside a preset range.

So, under the condition that oil smoke determine module 30 can not normally work, send the suggestion of trouble so that the maintenance.

In some embodiments, the controller 50 is configured to control the kitchen appliance 100 according to a preset operating state of the fan assembly 40 if the fluctuation of the smoke volume signal is within the smokeless range.

In this manner, the kitchen appliance is controlled directly with the preset operating state of the fan assembly 40 without further determination of the operating state of the fan assembly 40.

The computer readable storage medium of the embodiments of the present invention has a computer program stored thereon, which when executed by a processor, implements the steps of the control method of any of the above embodiments.

In the computer-readable storage medium according to the embodiment of the present invention, since the soot particles 200 in the soot may affect the intensity of the light emitted by the light emitter 32 received by the light receiver 34, so that the smoke volume signal output by the light receiver 34 changes, and the soot concentration fluctuates slightly during the uncooked period, and the soot concentration fluctuates greatly during the cooking process, the air volume of the fan 44 may be determined according to the operating state parameter related to the smoke volume signal when the fluctuation of the smoke volume signal output by the light receiver 34 within the preset time period is within the smoke range. Therefore, the interference of external environmental factors on oil smoke detection can be reduced, and the detection precision and the oil smoke exhaust effect are improved.

The computer-readable storage medium may be installed in the kitchen device 100, or may be installed in an external device such as a cloud server, and the kitchen device 100 acquires the program from the external device to execute the control method according to the embodiment of the present invention.

It will be appreciated that the computer program comprises computer program code. The computer program code may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable storage medium may include: any entity or device capable of carrying computer program code, recording medium, U-disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), software distribution medium, and the like.

The controller 50 of the kitchen appliance 100 is a single chip integrated with a processor, a memory, a communication module, etc. The processor may refer to a processor included in the controller 50. The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

The logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processing module-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.

It should be understood that portions of embodiments of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A control method of kitchen equipment is characterized in that the kitchen equipment comprises an oil smoke air channel and an oil smoke detection assembly, a fan assembly is arranged in the oil smoke air channel, the oil smoke detection assembly is used for detecting oil smoke in the oil smoke air channel and outputting a smoke volume signal, and the control method comprises the following steps:

2. The control method according to claim 1, characterized by comprising: and determining the working state parameters of the fan assembly according to the smoke quantity signal under the condition that the smoke quantity signal is in a preset range.

3. The control method according to claim 2, wherein the preset range comprises a plurality of sub-ranges, each sub-range corresponds to the operating state parameter, and the determining the operating state parameter of the fan assembly according to the smoke volume signal when the smoke volume signal is in the preset range comprises:

4. The control method according to claim 3, wherein the smoke range is determined by the operating state parameter corresponding to the sub-range.

5. The control method according to claim 4, wherein the operating state parameter includes a first threshold value and a second threshold value, and the determining whether the fluctuation of the smoke quantity signal within a preset time period is in a smoke range or a smoke-free range includes:

6. The control method of claim 5, wherein the operating condition of the fan assembly includes an air volume of the fan assembly, the air volume of the fan assembly being linearly related to a numerical trend of the smoke volume signal.

7. The control method according to claim 1, characterized by comprising:

8. The control method according to claim 1, characterized by comprising: and controlling the kitchen equipment to send out a fault prompt under the condition that the smoke quantity signal exceeds the preset range.

9. The control method according to claim 1, characterized by comprising: and under the condition that the fluctuation of the smoke quantity signal is in the smokeless range, controlling the kitchen equipment according to the working state of a preset fan assembly.

10. The utility model provides a kitchen equipment, its characterized in that, kitchen equipment includes oil smoke wind channel, oil smoke determine module and controller, be provided with the fan subassembly in the oil smoke wind channel, oil smoke determine module is used for detecting the oil smoke in oil smoke wind channel and output smoke volume signal, the controller is used for judging whether the fluctuation of smoke volume signal in predetermineeing the time length is in there is the cigarette scope or smokeless scope, and be used for the smoke volume signal is in predetermineeing fluctuation in the time length in there is the cigarette scope or under the condition of smokeless scope, according to the operating condition parameter of fan subassembly confirms the operating condition of fan subassembly to and be used for according to confirming the operating condition control of fan subassembly kitchen equipment.

11. The kitchen device of claim 10, wherein the controller is configured to determine an operating condition parameter of the fan assembly based on the smoke volume signal if the smoke volume signal is within a predetermined range.

12. The kitchen device of claim 11, wherein the predetermined range includes a plurality of sub-ranges, each sub-range corresponding to the operating condition parameter, the controller being configured to determine the corresponding operating condition parameter based on the sub-range in which the smoke volume signal is located.

13. The kitchen device of claim 12, wherein the smoke range is determined by the operating state parameter corresponding to the sub-range.

14. The kitchen appliance of claim 13, wherein the operating condition parameters include a first threshold and a second threshold, the controller being configured to process the smoke volume signal to obtain a numerical trend and a numerical variation characteristic of the smoke volume signal, and to determine that the fluctuation of the smoke volume signal is in the smoke range if the trend of the smoke volume signal is not less than the first threshold and the numerical variation characteristic of the smoke volume signal is not less than the second threshold for the preset time period, and to determine that the fluctuation of the smoke volume signal is in the smoke-free range if the numerical trend of the smoke volume signal is less than the first threshold or the numerical variation characteristic of the smoke volume signal is less than the second threshold for the preset time period.

15. The kitchen device of claim 14, wherein the operating condition of the fan assembly includes an air volume of the fan assembly being linearly related to a numerical trend of the smoke volume signal.

16. The kitchen device of claim 10, wherein the controller is configured to filter the smoke volume signal prior to determining the operating condition parameter from the smoke volume signal.

17. The kitchen device of claim 10, wherein the controller is configured to control the kitchen device to issue a fault notification if the smoke volume signal is outside the preset range.

18. The kitchen device of claim 9, wherein the controller is configured to control the kitchen device according to a preset operating condition of the fan assembly if the fluctuation of the smoke volume signal is within the smokeless range.

19. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out the steps of the control method according to any one of claims 1 to 9.