CN112762490B - Range hood with double air inlets and air quantity control method thereof - Google Patents
Range hood with double air inlets and air quantity control method thereof Download PDFInfo
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- CN112762490B CN112762490B CN202110090414.8A CN202110090414A CN112762490B CN 112762490 B CN112762490 B CN 112762490B CN 202110090414 A CN202110090414 A CN 202110090414A CN 112762490 B CN112762490 B CN 112762490B
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- cooking
- guide rail
- fixedly connected
- range hood
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2078—Removing cooking fumes movable
- F24C15/2085—Removing cooking fumes movable adjustable in height
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a range hood with double air inlets and an air quantity control method thereof, wherein the range hood comprises a fixed air box body and an air guide box body capable of lifting, wherein the fixed air box body comprises an air box top plate positioned at the upper part, an air box bottom plate positioned at the lower part and an air box coaming surrounding the circumference, and the air box top plate, the air box bottom plate and the air box coaming surround to form a closed installation space; the range hood comprises a volute fan arranged in the installation space, and the bellows coaming is provided with an enclosed air channel facing the air inlet of the volute fan; a bottom plate air inlet is formed in the bottom plate of the bellows; the air guide box body is communicated with the volute fan, and a movable air inlet is formed in the bottom of the air guide box body.
Description
Technical Field
The invention relates to the field of range hoods, in particular to a range hood with double air inlets and an air quantity control method thereof.
Background
In the use process of the traditional range hood, a user is required to manually adjust the air quantity of the range hood according to the size of the oil smoke, but the untimely manual adjustment can lead the user to inhale excessive oil smoke, so that the health of the user can be influenced for a long time.
The intelligent range hood in the prior art can calculate cooking behaviors according to the amplitude change of a cooking temperature curve, capture the moment of abrupt change of the temperature of a cooking range area, and realize the pre-judgment of the range hood, so that the air inlet quantity of the range hood is adjusted to a proper gear in advance, and the range hood is collected and sucked in advance; there are also range hoods adopting a range hood identification model, which collect and detect range hood images in real time, judge the size of the range hood, and control the air quantity of the range hood according to the size of the range hood; however, according to the cooking temperature curve, the cooking behavior is calculated, so that the technical scheme for predicting the air inlet of the range hood is not mature enough, the prediction is inaccurate, and the air quantity control based on the oil smoke identification can be detected only after the oil smoke appears, so that a certain time delay exists from the rising of the oil smoke to the adjustment of the air quantity to a proper size.
In the prior art, in the actual use of the range hood, the problem that the oil smoke escapes from the bottom exists; meanwhile, as the fan is directly arranged in the box body of the range hood, when the size of the range hood is large, the space of the box body of the range hood is increased, the negative pressure generated by the fan is insufficient, and if the power of the fan is increased, the energy consumption and the noise are increased.
Disclosure of Invention
In order to solve the technical problems, the invention provides a range hood with double air inlets and an air quantity control method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a lampblack absorber with two air intakes, includes the fixed bellows body that sets firmly in the lampblack absorber and can go up and down the air guide bellows body, fixed bellows body is including being located the bellows roof at upper portion, being located the bellows bottom plate of lower part and encircling at circumference bellows bounding wall, bellows roof, bellows bottom plate and bellows bounding wall encircle and form confined installation space; the range hood comprises a volute fan arranged in the installation space, and the bellows coaming is provided with an enclosed air channel facing the air inlet of the volute fan; a bottom plate air inlet is formed in the bottom plate of the bellows; the air guide box body is communicated with the volute fan, and a movable air inlet is formed in the bottom of the air guide box body.
Further, the bellows coaming comprises a sealing box at the rear part, bellows side plates at two sides, a bellows front plate at the front part, and two bellows connecting plates for connecting the bellows front plate and the bellows side plates; the width of the front plate of the air box is smaller than the distance between the two side plates of the air box, so that the two connecting plates of the air box expand from front to back, and the two connecting plates of the air box and the front plate of the air box form the enclosed air channel; the air guide box body is communicated with the sealing box, a sealing channel is arranged in the sealing box, and the size of the sealing channel gradually decreases from one side far away from the volute fan to one side close to the volute fan.
Further, the device also comprises a plurality of telescopic bodies which are arranged at the lower part of the air guide box body and can horizontally extend out of the range hood, and a lifting mechanism which is fixedly connected with the air guide box body and can drive the air guide box body to move in the vertical direction; the telescopic body is arranged along the horizontal direction, and the movable air inlet is arranged on the telescopic body and is used for communicating outside air with the air guide box body;
the bottom of the air guide box body is fixedly provided with a long oil cup, and the air guide box body is communicated with the long oil cup; the top of the two side walls of the air guide box body and the top of the rear wall are provided with inwardly inclined top air guide plates; the bottom of the rear wall of the air guide box body is provided with a bottom air guide plate which is inclined outwards;
the number of the telescopic bodies is two, and the telescopic bodies are a first telescopic body and a second telescopic body respectively; the internal vertical first baffle and the second baffle that is provided with mutual partition of air guide box, first baffle and second baffle divide into the triplex with the internal space of air guide box: the space between the first partition plate and the air guide box body is a first space, the space between the first partition plate and the second partition plate is a second space, and the space between the second partition plate and the air guide box body is a third space; the movable air inlet of the first telescopic body is communicated with the first space, and the movable air inlet of the second telescopic body is communicated with the third space; comprises a first linear motor and a second linear motor which are arranged in a second space along the front-back direction; a fifth guide rail is fixedly arranged on the side wall, close to the first telescopic body, of the air guide box body, and a sixth guide rail is fixedly arranged on the side wall, close to the second telescopic body; one side of the first telescopic body is fixedly connected with the moving pair of the fifth guide rail, and the other side of the first telescopic body is fixedly connected with the moving pair of the first linear motor; one side of the second telescopic body is fixedly connected with the moving pair of the sixth guide rail, and the other side of the second telescopic body is fixedly connected with the moving pair of the second linear motor.
Further, the lifting mechanism comprises a driving component fixedly connected with the case of the range hood, a large bracket fixedly connected with the moving end of the driving component and transversely arranged, and a guide rail component for improving the stability of the large bracket in the lifting process of the large bracket; the large bracket is fixedly connected with the air guide box body; the driving assembly comprises a lifting motor fixedly connected with the case of the range hood, a screw rod matched with the lifting motor and a small bracket; the moving pair of the screw rod is fixedly connected with the large bracket; one side of the small bracket is fixedly connected with the bottom of the screw rod, and the other side of the small bracket is fixedly connected with the case of the range hood; the case of the range hood comprises a case rear wall arranged at the rear side and case side walls arranged at the two sides; the guide rail assembly comprises a first guide rail and a second guide rail which are symmetrically and fixedly arranged on two sides of the rear wall of the chassis, and a third guide rail and a fourth guide rail which are symmetrically and fixedly arranged on the side walls of the two chassis; one end of the large support is fixedly connected with the moving pairs of the first guide rail and the third guide rail, and the other end of the large support is fixedly connected with the moving pairs of the second guide rail and the fourth guide rail.
Further, the fixed pairs of the first guide rail and the second guide rail are fixedly connected with the rear wall of the chassis, and the movable pair faces to the front side; the fixed pairs of the third guide rail and the fourth guide rail are fixedly connected with the side walls of the two cases respectively, and the movable pairs are oppositely arranged;
comprises a first bracket and a second bracket which are L-shaped and are fixedly connected with the air guide box body; one end of the first bracket is fixedly connected with the moving pair of the third guide rail, and the other end of the first bracket is fixedly connected with the moving pair of the first guide rail; one end of the second bracket is fixedly connected with the moving pair of the fourth guide rail, and the other end of the second bracket is fixedly connected with the moving pair of the second guide rail.
A range hood air quantity control method with double air inlets comprises the following steps:
step one: performing cooking behavior classification labeling on the acquired cooking images to obtain a cooking behavior data set, and performing oil smoke quantity labeling on the acquired cooking images to obtain an oil smoke detection data set;
step two: the cooking behavior data set is input into the artificial intelligent model to be trained to obtain a classification model, and the oil smoke detection data set is input into the artificial intelligent model to be trained to obtain a detection model;
step three: classifying the real-time cooking behaviors through a classification model to obtain a cooking behavior result a; identifying the oil smoke during cooking by using a detection model to obtain real-time oil smoke quantity;
step four: judging a cooking behavior result b according to the temperature change of the cooking pot during cooking, and determining an actual cooking behavior c according to the relation between a and b;
step five: determining the air inlet quantity of the range hood according to the actual cooking behavior c, the real-time oil smoke quantity and the temperature change of the cooking pot body;
the artificial intelligent model is any one of FasterRCNN, YOLOv and SSD.
Specifically, in the fourth step, when the actual cooking behavior c is determined by the relationship between the cooking behavior result a and the cooking behavior result b,
wherein max TempChg (a, b) means that the cooking pot temperature change of the cooking action result a and the cooking action result b is larger than the stewing or boiling, and the pot temperature change of stewing or boiling is larger than the frying.
Specifically, in the first step, when the acquired cooking image is marked for cooking behavior, the cooking behavior comprises frying, stir-frying, boiling and stewing; when the acquired cooking images are marked with the oil smoke, the images are analyzed according to the manual work, the samples without the oil smoke, the small smoke, the medium smoke and the large smoke are divided, and the reference samples are marked when the subsequent marking is carried out.
Specifically, in the fourth step, when the cooking behavior result b is determined by the cooking pot temperature change during cooking, the cooking pot temperature change threshold value is temp thresh The temperature change value of the cooking pot body in 2 minutes is temp delta Then the ratio temp ratio ＝temp delta /temp thresh The method comprises the steps of carrying out a first treatment on the surface of the If 0 < temp ratio The cooking behavior result b is frying or frying; if 1 < temp ratio 2.5, the cooking behavior result b is boiling or stewing; if temp ratio > 2.5, the cooking behaviour result b is fry.
Specifically, in the fifth step, according to the actual cooking behavior and the real-time oil smoke amountAnd when the cooking pot body temperature change determines the air inlet amount of the range hood, if the actual cooking behavior is frying, the cooking pot body temperature change amount in the cooking pot body temperature detection process is larger than temp thresh2 When the real-time oil smoke amount is small smoke, the air inlet quantity is adjusted to the maximum gear; wherein temp thresh2 A second threshold value for a change in cooking pot temperature; in the fifth step, when the air intake of the range hood is determined according to the actual cooking behavior, the real-time oil smoke amount and the change of the cooking pot body temperature, if the actual cooking behavior is stewing or cooking, the change of the cooking pot body temperature in the oil smoke detection process is larger than temp thresh2 When the actual oil smoke amount is large, adjusting the air inlet amount to the middle gear; wherein temp thresh2 The second threshold is varied for the cooking pot temperature.
Compared with the prior art, the invention has the beneficial technical effects that:
1. according to the invention, cooking oil fume is treated through the two air inlets, wherein the movable air inlet capable of lifting along with the air guide box body is a main air inlet, the bottom plate air inlet is an auxiliary air inlet, and the movable air inlet can extend downwards to a cooking position under the drive of the lifting mechanism so as to prevent the oil fume from escaping from the bottom; the bottom plate air inlet can suck a small amount of oil smoke diffused to the upper part into the range hood; the double air inlets can improve the oil smoke absorption effect and prevent the oil smoke from diffusing; the invention also provides a closed fixed air box body in the range hood, and the fan is arranged in the fixed air box body, so that the negative pressure in the fixed air box body is improved, and the discharge of oil smoke is accelerated.
2. The invention combines two data sources of temperature and image, reduces misjudgment and delay judgment caused by a single data source, thereby reasonably adjusting the air quantity of the smoke machine and absorbing the smoke.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a stationary bellows body according to the present invention;
FIG. 3 is a schematic diagram of the structure of the scroll blower of the present invention;
FIG. 4 is a schematic view of the structure of the bellows panel of the present invention;
FIG. 5 is a schematic view of the structure of the air guide box body of the present invention;
FIG. 6 is a front view of the air guide box of the present invention;
FIG. 7 is a side view of the air guide box of the present invention;
FIG. 8 is a front view of the lift mechanism of the present invention;
FIG. 9 is a rear view of the lift mechanism of the present invention;
FIG. 10 is a front view of the lift mechanism of the present invention assembled with a bellows body;
fig. 11 is a flowchart of the air volume control method of the present invention.
Detailed Description
A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-4, the range hood with the double air inlets comprises a fixed air box body and an air guide box body 21 which can be lifted, wherein the fixed air box body comprises an air box top plate 45 positioned at the upper part, an air box bottom plate 46 positioned at the lower part and an air box coaming 42 encircling the circumference, and the air box top plate, the air box bottom plate and the air box coaming encircle to form a closed installation space; the range hood comprises a volute fan 43 arranged in the installation space, and the bellows coaming is provided with an enclosed air channel facing the air inlet of the volute fan; a bottom plate air inlet is formed in the bottom plate of the bellows; the air guide box body is communicated with the volute fan, and a movable air inlet 223 is formed in the bottom of the air guide box body.
According to the invention, cooking oil fume is treated through the two air inlets, wherein the movable air inlet capable of lifting along with the air guide box body is a main air inlet, the bottom plate air inlet is an auxiliary air inlet, and the movable air inlet can extend downwards to a cooking position under the drive of the lifting mechanism so as to prevent the oil fume from escaping from the bottom; the bottom plate air inlet can suck a small amount of oil smoke diffused to the upper part into the range hood; the double air inlets can improve the oil smoke absorption effect and prevent the oil smoke from diffusing; the invention also provides a closed fixed air box body in the range hood, and the fan is arranged in the fixed air box body, so that the negative pressure in the fixed air box body is improved, and the discharge of oil smoke is accelerated.
As shown in fig. 2, the bellows coaming comprises a seal box 421 at the rear, bellows side plates 424 at both sides, a bellows front plate 423 at the front, two bellows connecting plates 422 connecting the bellows front plate and the bellows side plates; the width of the front plate of the air box is smaller than the distance between the two side plates of the air box, so that the two connecting plates of the air box expand from front to back, and the two connecting plates of the air box and the front plate of the air box form the enclosed air channel; the air guide box body is communicated with the sealing box, a sealing channel is arranged in the sealing box, and the size of the sealing channel gradually decreases from one side far away from the volute fan to one side close to the volute fan.
The invention also gathers the oil smoke to the air inlet of the fan through the air box coaming plate with the surrounding type air duct, thereby being convenient for the quick discharge of the oil smoke.
The spiral case flange is fixedly connected with the spiral case fan and the spiral case support, the spiral case flange is fixedly connected with the top plate of the spiral case through bolts and rivets, the spiral case support is fixedly connected with the coaming of the air case through the bolts of the sunk platform holes, and the sunk platform holes can increase local strength and lighten vibration of the spiral case during working.
The kitchen ventilator further comprises four bellows supports 41 which are uniformly distributed on two sides of the fixed bellows body, the bellows supports are fixedly connected with the box body of the kitchen ventilator, the sealing box is fixedly connected with the box body of the kitchen ventilator, and stress of all parts is uniform.
The two bellows connecting plates form a horn-shaped opening, the opening faces to an air inlet of the volute fan, and after the oil fume enters the fixed bellows body from the air inlet of the bottom plate, the oil fume can quickly enter the volute fan under the guiding action of the surrounding type air duct and the negative pressure action of the volute fan.
The bottom plate of the bellows is not a plane, but is in an inclined layout gradually lowered from two sides to the middle, oil drops are gathered, and the oil drops enter the small oil cup along the bottom plate of the bellows and the oil outlet.
The installation of the small oil cup adopts a lateral sliding installation method, a stop structure is designed, and meanwhile, the lowest part of the bottom plate of the bellows is completely wrapped by the oil cup, so that oil dripping and oil leakage are avoided.
As shown in fig. 3, the middle position of the bellows bottom plate is lower than the two side positions of the bellows bottom plate, and the lowest position of the bellows bottom plate is provided with an oil outlet, and the lower part of the bellows bottom plate is provided with a small oil cup 47 at the position corresponding to the oil outlet.
As shown in fig. 3, the top plate of the bellows is provided with a top plate mounting hole, the air outlet of the volute fan extends out from the top plate mounting hole, and the air outlet of the volute fan is provided with a check valve 44.
As shown in fig. 5, the device further comprises a plurality of telescopic bodies which are arranged at the lower part of the air guide box body and can horizontally extend out of the range hood, and a lifting mechanism which is fixedly connected with the air guide box body and can drive the air guide box body to move in the vertical direction; the telescopic body is arranged along the horizontal direction, and the movable air inlet is arranged on the telescopic body and is used for communicating outside air with the air guide box body.
According to the invention, the negative pressure of the range hood is dispersed to a plurality of positions through the telescopic bodies which can be telescopic and are provided with the movable air inlets, so that the oil smoke generated by different cooking ranges in the cooking process can be subjected to key treatment, and the oil smoke is prevented from escaping; and when the range hood works, the telescopic body can be driven by the lifting mechanism to downwards extend to a cooking position, so that the oil smoke is prevented from escaping from the bottom.
As shown in fig. 5, a long oil cup 23 is fixedly arranged at the bottom of the air guide box body, and the air guide box body is communicated with the long oil cup; the top of the two side walls and the top of the rear wall of the air guide box body are provided with inwardly inclined top air deflectors 211; the bottom of the rear wall of the air guide box body is provided with an outwardly inclined bottom air deflector 212.
The description of outward inclination and inward inclination refers to the extending direction of the air deflector when seen from bottom to top, and if the air deflector extends outwards, the air deflector is inclined outwards; wherein the inner part of the air guide box body is the inner part, and the outer part of the air guide box body is the outer part.
The bottom air deflector is favorable for guiding the oil fume to the upper part of the box body, the top air deflector which is inclined inwards can block the oil fume in the rising process, the oil fume is condensed, and the obtained oil drops are led into the long oil cup.
As shown in fig. 6 to 10, the telescopic bodies are two in total and are a first telescopic body 221 and a second telescopic body 222 respectively; the first baffle 251 and the second baffle 252 which are mutually separated are vertically arranged in the air guide box body, and the space in the air guide box body is divided into three parts by the first baffle and the second baffle: the space between the first partition plate and the air guide box body is a first space, the space between the first partition plate and the second partition plate is a second space, and the space between the second partition plate and the air guide box body is a third space; the movable air inlet of the first telescopic body is communicated with the first space, and the movable air inlet of the second telescopic body is communicated with the third space; includes a first linear motor 242 and a second linear motor 243 disposed in the second space in the front-rear direction; a fifth guide rail 241 is fixedly arranged on the side wall, close to the first telescopic body, of the air guide box body, and a sixth guide rail 244 is fixedly arranged on the side wall, close to the second telescopic body; one side of the first telescopic body is fixedly connected with the moving pair of the fifth guide rail, and the other side of the first telescopic body is fixedly connected with the moving pair of the first linear motor; one side of the second telescopic body is fixedly connected with the moving pair of the sixth guide rail, and the other side of the second telescopic body is fixedly connected with the moving pair of the second linear motor.
In this embodiment, the fifth guide rail and the sixth guide rail are two sections of rails.
In this embodiment, there are two telescopic bodies in common, i.e. two cooking positions are treated. Two linear electric motor sets up between first baffle and second baffle, can prevent that the oil smoke from producing harmful effects to its electrical structure.
The movable pairs of the first motor and the second motor can do linear reciprocating motion relative to the fixed pairs of the first motor and the second motor, and the fixed pairs of the first motor and the second motor are fixedly connected with the air guide box body; the moving pair of the first motor can drive the first telescopic body to extend and retract, and the moving pair of the second motor can drive the second telescopic body to extend and retract.
The telescopic body extends to the position right above the cooking position, so that the cooking fume can be absorbed more effectively; when the telescopic body is retracted, the integral attractive appearance of the range hood can be improved, and the effective utilization space of a kitchen can be increased.
As shown in fig. 8, the lifting mechanism comprises a driving component fixedly connected with a case of the range hood, a large bracket 18 fixedly connected with a moving end of the driving component and transversely arranged, and a guide rail component for improving the stability of the large bracket in the lifting process of the large bracket; the large bracket is fixedly connected with the air guide box body; the driving assembly comprises a lifting motor 15 fixedly connected with the case of the range hood, a screw rod 16 matched with the lifting motor and a small bracket 17; the moving pair of the screw rod is fixedly connected with the large bracket; one side of the small bracket is fixedly connected with the bottom of the screw rod, and the other side of the small bracket is fixedly connected with the case of the range hood; the case of the range hood comprises a case rear wall arranged at the rear side and case side walls arranged at the two sides; the guide rail assembly comprises a first guide rail 11 and a second guide rail 12 which are symmetrically fixed on two sides of the rear wall of the chassis, and a third guide rail 13 and a fourth guide rail 14 which are symmetrically fixed on two side walls of the chassis; one end of the large support is fixedly connected with the moving pairs of the first guide rail and the third guide rail, and the other end of the large support is fixedly connected with the moving pairs of the second guide rail and the fourth guide rail.
The moving pair of the screw rod is the moving end of the driving assembly.
The lifting motor is used as a power source for integral lifting, and converts electric energy into lifting motion of the screw rod moving pair; the lifting motor is fixedly connected to the case of the range hood through a fixed hole site.
The small support is used for fixing the bottom of the screw rod, so that the structural stability of the screw rod is improved, and the screw rod is prevented from deforming or displacing in the moving process of the large support.
The fixed pair of the first guide rail and the second guide rail is fixedly connected with the rear wall of the chassis, and the movable pair faces the front side; the fixed pairs of the third guide rail and the fourth guide rail are fixedly connected with the side walls of the two cases respectively, and the movable pairs are arranged oppositely.
Comprises a first bracket 19 and a second bracket 191 which are L-shaped and are fixedly connected with the air guide box body; one end of the first bracket is fixedly connected with the moving pair of the third guide rail, and the other end of the first bracket is fixedly connected with the moving pair of the first guide rail; one end of the second bracket is fixedly connected with the moving pair of the fourth guide rail, and the other end of the second bracket is fixedly connected with the moving pair of the second guide rail.
Four guide rails all have two kinematic pairs, and the big support that transversely sets up passes through the kinematic pair of screw and four guide rails to be connected, and first support can slide along first guide rail and third guide rail, and the second support can slide along second guide rail and fourth guide rail, and big support, first support, second support all pass through screw fixed connection with the wind-guiding box body, utilize whole frame construction to improve the stability of wind-guiding box body lift in-process, and the atress is even reasonable.
As shown in fig. 11, the air volume control method of the range hood based on artificial intelligence comprises the following steps:
s1: and carrying out cooking behavior classification labeling on the acquired cooking images to obtain a cooking behavior data set, and carrying out oil smoke quantity labeling on the acquired cooking images to obtain an oil smoke detection data set.
Specifically, in the first step, when the acquired cooking image is marked for cooking behavior, the cooking behavior comprises frying, stir-frying, boiling and stewing; when the acquired cooking images are marked with the oil smoke, the images are analyzed according to the manual work, the samples without the oil smoke, the small smoke, the medium smoke and the large smoke are divided, and the reference samples are marked when the subsequent marking is carried out.
The cooking image acquisition method and the cooking device have the advantages that the cooking image acquisition is realized, the corresponding cooking behaviors in the cooking image are marked, and the oil smoke quantity corresponding to the cooking image is marked, so that the artificial intelligent model can detect the cooking process in real time, and the corresponding cooking behavior result and the real-time oil smoke quantity are output.
S2: the cooking behavior data set is input into the artificial intelligent model to train to obtain a classification model, and the oil smoke detection data set is input into the artificial intelligent model to train to obtain a detection model.
Specifically, in the second step, the artificial intelligence model is any one of FasterRCNN, YOLOv and SSD.
FasterRCNN, YOLOv3 SSD are commonly used artificial intelligence models, which can be trained on data sets to obtain classification detection models.
S3: classifying the real-time cooking behaviors through a classification model to obtain a cooking behavior result a; and identifying the oil smoke during cooking by using the detection model to obtain the real-time oil smoke quantity.
S4: and judging a cooking behavior result b according to the temperature change of the cooking pot during cooking, and determining an actual cooking behavior c according to the relation between a and b.
Specifically, in the fourth step, when the actual cooking behavior c is determined by the relationship between the cooking behavior result a and the cooking behavior result b,
wherein max TempChg (a, b) means that the cooking pot temperature change of the cooking action result a and the cooking action result b is larger than the stewing or boiling, and the pot temperature change of stewing or boiling is larger than the frying.
According to the invention, the cooking behavior result is confirmed through two data sources, wherein the two data sources are respectively an image data source and a temperature data source, and the cooking behavior with the largest cooking pot temperature change in the two data sources is taken as a final result, so that the cooking behavior generating the largest oil smoke is ensured to be completely absorbed, and misjudgment caused by a single data source is reduced; even if no lampblack is generated, the air inlet quantity of the lampblack absorber can be judged in advance according to the temperature data, and damage to the body of a user caused by delayed starting of the lampblack absorber is avoided.
Specifically, in the fourth step, when the cooking behavior result b is determined by the cooking pot temperature change during cooking, the cooking pot temperature change threshold value is temp thresh The temperature change value of the cooking pot body in 2 minutes is temp delta Then the ratio temp ratio ＝temp delta /temp thresh The method comprises the steps of carrying out a first treatment on the surface of the If 0 < temp ratio The cooking behavior result b is frying or frying; if 1 < temp ratio 2.5, the cooking behavior result b is boiling or stewing; if temp ratio > 2.5, the cooking behaviour result b is fry.
S5: and determining the air inlet quantity of the range hood according to the actual cooking behavior c, the real-time oil smoke quantity and the temperature change of the cooking pot body.
Specifically, when the air inlet amount of the range hood is determined according to the actual cooking behavior, the real-time oil smoke amount and the cooking pot body temperature change in the fifth step, if the actual cooking behavior is frying and the cooking pot body temperature change amount in the oil smoke detection process is larger than temp thresh2 When the real-time oil smoke amount is small smoke, the air inlet quantity is adjusted to the maximum gear; wherein temp thresh2 A second threshold value for a change in cooking pot temperature; although the oil smoke amount is small, more oil smoke is generated later during cooking, and the air inlet quantity is adjusted to the maximum gear so as to realize the advanced smoke control.
Specifically, in the fifth step, when the air inlet amount of the range hood is determined according to the actual cooking behavior, the real-time oil smoke amount and the change of the cooking pot body temperature, if the actual cooking behavior is stewing or boiling, the change of the cooking pot body temperature in the oil smoke detection process is larger than temp thresh2 When the actual oil smoke amount is large, adjusting the air inlet amount to the middle gear; wherein temp thresh2 A second threshold value for a change in cooking pot temperature; when stewing and boiling, even if the oil smoke is large, the oil smoke is mostly steam, and is harmless to human body, so that a large air inlet amount is not needed.
If the actual cooking behavior is frying, the actual oil smoke amount is small smoke, and the air inlet quantity is adjusted to the lowest gear.
The maximum gear, the middle gear and the minimum gear can be divided according to the needs, according to experiments or experience, or equally divided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a single embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to specific embodiments, and that the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
Claims (6)
1. The air quantity control method of the range hood with the double air inlets is characterized in that the range hood comprises a fixed air box body and an air guide box body (21) which can be lifted, wherein the fixed air box body comprises an air box top plate (45) positioned at the upper part, an air box bottom plate (46) positioned at the lower part and an air box coaming (42) encircling the periphery, and the air box top plate, the air box bottom plate and the air box coaming encircle to form a closed installation space; the range hood comprises a volute fan (43) arranged in the installation space, and the bellows coaming is provided with an enclosed air channel facing the air inlet of the volute fan; a bottom plate air inlet is formed in the bottom plate of the bellows; the air guide box body is communicated with the volute fan, and a movable air inlet (223) is formed in the bottom of the air guide box body;
the bellows coaming comprises a sealing box (421) positioned at the rear part, bellows side plates (424) positioned at two sides, a bellows front plate (423) positioned at the front part, and two bellows connecting plates (422) connected with the bellows front plate and the bellows side plates; the width of the front plate of the air box is smaller than the distance between the two side plates of the air box, so that the two connecting plates of the air box expand from front to back, and the two connecting plates of the air box and the front plate of the air box form the enclosed air channel; the air guide box body is communicated with the sealing box, a sealing channel is arranged in the sealing box, and the size of the sealing channel is gradually reduced from one side far away from the volute fan to one side close to the volute fan;
the control method comprises the following steps:
step one: performing cooking behavior classification labeling on the acquired cooking images to obtain a cooking behavior data set, and performing oil smoke quantity labeling on the acquired cooking images to obtain an oil smoke detection data set;
step two: the cooking behavior data set is input into the artificial intelligent model to be trained to obtain a classification model, and the oil smoke detection data set is input into the artificial intelligent model to be trained to obtain a detection model;
step three: classifying the real-time cooking behaviors through a classification model to obtain a cooking behavior result a; identifying the oil smoke during cooking by using a detection model to obtain real-time oil smoke quantity;
step four: judging a cooking behavior result b according to the temperature change of the cooking pot during cooking, and determining an actual cooking behavior c according to the relation between a and b;
step five: determining the air inlet quantity of the range hood according to the actual cooking behavior c, the real-time oil smoke quantity and the temperature change of the cooking pot body;
the artificial intelligent model is any one of a Faster RCNN, a YOLO v3 and an SSD;
in the fourth step, when the actual cooking behavior c is determined according to the relation between the cooking behavior result a and the cooking behavior result b,
wherein max TempChg (a, b) means that the cooking pot body temperature change of the cooking action result a and the cooking action result b is larger than that of stewing or boiling, and the pot body temperature change of stewing or boiling is larger than that of frying;
in the first step, when the acquired cooking images are marked for cooking behaviors, the cooking behaviors comprise frying, stir-frying, boiling and stewing; when the acquired cooking images are marked with the oil smoke, the images are analyzed according to the manual work, the samples without the oil smoke, the small smoke, the medium smoke and the large smoke are divided, and the reference samples are marked when the subsequent marking is carried out.
2. The air quantity control method of the range hood with the double air inlets according to claim 1, wherein the air quantity control method is characterized by comprising the following steps of: the lifting mechanism is fixedly connected with the air guide box body and can drive the air guide box body to move in the vertical direction; the telescopic body is arranged along the horizontal direction, and the movable air inlet is arranged on the telescopic body and is used for communicating outside air with the air guide box body;
a long oil cup (23) is fixedly arranged at the bottom of the air guide box body, and the air guide box body is communicated with the long oil cup; the top of the two side walls and the top of the rear wall of the air guide box body are provided with inwardly inclined top air deflectors (211); the bottom of the rear wall of the air guide box body is provided with a bottom air guide plate (212) which is inclined outwards;
the number of the telescopic bodies is two, and the telescopic bodies are a first telescopic body (221) and a second telescopic body (222) respectively; the air guide box is internally and vertically provided with a first partition plate (251) and a second partition plate (252) which are mutually separated, and the space in the air guide box is divided into three parts by the first partition plate and the second partition plate: the space between the first partition plate and the air guide box body is a first space, the space between the first partition plate and the second partition plate is a second space, and the space between the second partition plate and the air guide box body is a third space; the movable air inlet of the first telescopic body is communicated with the first space, and the movable air inlet of the second telescopic body is communicated with the third space; comprises a first linear motor (242) and a second linear motor (243) which are arranged in the second space along the front-back direction; a fifth guide rail (241) is fixedly arranged on the side wall, close to the first telescopic body, of the air guide box body, and a sixth guide rail (244) is fixedly arranged on the side wall, close to the second telescopic body; one side of the first telescopic body is fixedly connected with the moving pair of the fifth guide rail, and the other side of the first telescopic body is fixedly connected with the moving pair of the first linear motor; one side of the second telescopic body is fixedly connected with the moving pair of the sixth guide rail, and the other side of the second telescopic body is fixedly connected with the moving pair of the second linear motor.
3. The air quantity control method of the range hood with the double air inlets according to claim 2, wherein the air quantity control method is characterized by comprising the following steps of: the lifting mechanism comprises a driving assembly fixedly connected with a case of the range hood, a large bracket (18) fixedly connected with a moving end of the driving assembly and transversely arranged, and a guide rail assembly for improving stability of the large bracket in the lifting process of the large bracket; the large bracket is fixedly connected with the air guide box body; the driving assembly comprises a lifting motor (15) fixedly connected with the case of the range hood, a screw rod (16) matched with the lifting motor and a small bracket (17); the moving pair of the screw rod is fixedly connected with the large bracket; one side of the small bracket is fixedly connected with the bottom of the screw rod, and the other side of the small bracket is fixedly connected with the case of the range hood; the case of the range hood comprises a case rear wall arranged at the rear side and case side walls arranged at the two sides; the guide rail assembly comprises a first guide rail (11) and a second guide rail (12) which are symmetrically and fixedly arranged on two sides of the rear wall of the chassis, and a third guide rail (13) and a fourth guide rail (14) which are symmetrically and fixedly arranged on two side walls of the chassis; one end of the large support is fixedly connected with the moving pairs of the first guide rail and the third guide rail, and the other end of the large support is fixedly connected with the moving pairs of the second guide rail and the fourth guide rail.
4. The air volume control method of the range hood with the double air inlets according to claim 3, wherein the air volume control method comprises the following steps: the fixed pair of the first guide rail and the second guide rail is fixedly connected with the rear wall of the chassis, and the movable pair faces the front side; the fixed pairs of the third guide rail and the fourth guide rail are fixedly connected with the side walls of the two cases respectively, and the movable pairs are oppositely arranged;
comprises a first bracket (19) and a second bracket (191) which are L-shaped and are fixedly connected with the air guide box body; one end of the first bracket is fixedly connected with the moving pair of the third guide rail, and the other end of the first bracket is fixedly connected with the moving pair of the first guide rail; one end of the second bracket is fixedly connected with the moving pair of the fourth guide rail, and the other end of the second bracket is fixedly connected with the moving pair of the second guide rail.
5. The air quantity control method of the range hood with the double air inlets according to claim 1, wherein the air quantity control method is characterized by comprising the following steps of: in the fourth step, when the cooking behavior result b is judged according to the cooking pot temperature change during cooking, the cooking pot temperature change threshold value is temp thrwsh The temperature change value of the cooking pot body in 2 minutes is temp delta Then the ratio temp ratio ＝temp delta /temp thresh The method comprises the steps of carrying out a first treatment on the surface of the If 0 is<temp ratio <1, cooking behavior resultb is frying or frying; if 1<temp ratio <2.5, the cooking behavior result b is boiling or stewing; if temp ratio >2.5, the cooking behavior result b is stir-frying.
6. The method for controlling air quantity of a range hood with double air inlets according to claim 1, wherein in the fifth step, when the air quantity of the range hood is determined according to actual cooking behavior, real-time cooking oil quantity and cooking pot body temperature change, if the actual cooking behavior is stir-frying and the cooking pot body temperature change quantity in the cooking oil fume detection process is larger than temp thresh2 When the real-time oil smoke amount is small smoke, the air inlet quantity is adjusted to the maximum gear; wherein temp thresh2 A second threshold value for a change in cooking pot temperature; in the fifth step, when the air intake of the range hood is determined according to the actual cooking behavior, the real-time oil smoke amount and the change of the cooking pot body temperature, if the actual cooking behavior is stewing or cooking, the change of the cooking pot body temperature in the oil smoke detection process is larger than temp thresh2 When the actual oil smoke amount is large, adjusting the air inlet amount to the middle gear; wherein temp thresh2 The second threshold is varied for the cooking pot temperature.
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