CN112762490A - 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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- CN112762490A CN112762490A CN202110090414.8A CN202110090414A CN112762490A CN 112762490 A CN112762490 A CN 112762490A CN 202110090414 A CN202110090414 A CN 202110090414A CN 112762490 A CN112762490 A CN 112762490A
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- 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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Abstract
The invention discloses a range hood with double air inlets and an air volume control method thereof, wherein the range hood comprises a fixed air box body and an air guide box body, wherein the fixed air box body is fixedly arranged in the range hood; the range hood comprises a volute fan arranged in the installation space, and the bellows coaming plate is provided with an enclosed air channel facing to an air inlet of the volute fan; the bottom plate of the air box is provided with a bottom plate air inlet; 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 volume control method thereof.
Background
In the use process of the traditional range hood, a user needs to manually adjust the air volume of the range hood according to the size of oil smoke, but the user inhales excessive oil smoke due to untimely manual adjustment, and the health of the user is affected in the past.
In the prior art, the intelligent lampblack machine calculates cooking behaviors according to the amplitude change of a cooking temperature curve, captures the moment of temperature sudden change of a cooking range area, and realizes lampblack prejudgment, so that the air inlet quantity of the range hood is adjusted to a proper gear in advance, and lampblack is gathered and sucked in advance; the range hood adopting the oil smoke identification model is also provided, and is used for acquiring and detecting oil smoke images in real time, judging the size of oil smoke and controlling the air volume of the range hood according to the size of the oil smoke; however, the cooking behavior is calculated according to the cooking temperature curve, and the technical scheme for predicting the air intake of the range hood is not mature enough, so that the prediction is not accurate, and the air volume control based on oil smoke recognition can be detected only after oil smoke appears, so that a certain time delay exists between the rise of the oil smoke and the adjustment of the air volume to a proper size.
In actual use of the range hood in the prior art, the problem that oil smoke escapes from the bottom is solved; simultaneously, because the fan directly sets up in the box of lampblack absorber, when the lampblack absorber size is great, then its quick-witted case space also increases thereupon, and the negative pressure that the fan produced is just not enough, if the power of increase fan, then can increase energy consumption and noise.
Disclosure of Invention
In order to solve the technical problems, the invention provides a range hood with double air inlets and an air volume control method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
a range hood with double air inlets comprises a fixed air box body and an air guide box body, wherein the fixed air box body is fixedly arranged in the range hood, the air guide box body can lift, 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 enclosing plate which surrounds the circumference, and the air box top plate, the air box bottom plate and the air box enclosing plate surround to form a closed installation space; the range hood comprises a volute fan arranged in the installation space, and the bellows coaming plate is provided with an enclosed air channel facing to an air inlet of the volute fan; the bottom plate of the air box is provided with a bottom plate air inlet; the air guide box body is communicated with the volute fan, and the bottom of the air guide box body is provided with a movable air inlet.
Furthermore, the air box coaming plate comprises a sealing box positioned at the rear part, air box side plates positioned at two sides, an air box front plate positioned at the front part, and two air box connecting plates for connecting the air box front plate and the air box side plates; the width of the air box front plate is smaller than the distance between the two air box side plates, so that the two air box connecting plates are expanded from front to back, and the two air box connecting plates and the air box front plate form the enclosed air channel; the air guide box body is communicated with the seal box, a seal channel is arranged in the seal box, and the size of the seal channel is gradually reduced from one side far away from the volute fan to one side close to the volute fan.
The range hood 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 bodies are arranged along the horizontal direction, and the movable air inlets are arranged on the telescopic bodies and are used for communicating external 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; top air deflectors which are inclined inwards are arranged at the tops of the two side walls and the top of the rear wall of the air guide box body; the bottom of the rear wall of the air guide box body is provided with an outward inclined bottom air guide plate;
the number of the telescopic bodies is two, and the two telescopic bodies are respectively a first telescopic body and a second telescopic body; the vertical first baffle and the second baffle that are provided with mutual separation in the air guide box, space partition in first baffle and the second baffle in with the air guide box is the triplex: 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; the first linear motor and the second linear motor are arranged in the second space along the front-back direction; a fifth guide rail is fixedly arranged on the side wall of the air guide box body close to the first telescopic 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.
Furthermore, the lifting mechanism comprises a driving assembly fixedly connected with the chassis of the range hood, a large support transversely arranged and fixedly connected with the moving end of the driving assembly, and a guide rail assembly used for improving the stability of the large support in the lifting process of the large support; the large bracket is fixedly connected with the air guide box body; the driving assembly comprises a lifting motor fixedly connected with a chassis of the range hood, a screw rod matched with the lifting motor and a small bracket; the sliding pair of the screw rod is fixedly connected with the large bracket; one side of the small support is fixedly connected with the bottom of the screw rod, and the other side of the small support is fixedly connected with a case of the range hood; the machine case of the range hood comprises a machine case rear wall arranged on the rear side and machine case side walls arranged on 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 case, and a third guide rail and a fourth guide rail which are symmetrically and fixedly arranged on the side walls of the two cases; one end of the large support is fixedly connected with the sliding pairs of the first guide rail and the third guide rail, and the other end of the large support is fixedly connected with the sliding pairs of the second guide rail and the fourth guide rail.
Furthermore, a fixed pair of the first guide rail and the second guide rail is fixedly connected with the rear wall of the case, and the moving pair faces to the front side; the fixed pairs of the third guide rail and the fourth guide rail are respectively fixedly connected with the side walls of the two cases, and the moving pairs are oppositely arranged;
the air guide box comprises a first support and a second support which are L-shaped and fixedly connected with the air guide box body; one end of the first support is fixedly connected with the moving pair of the third guide rail, and the other end of the first support is fixedly connected with the moving pair of the first guide rail; one end of the second support is fixedly connected with the moving pair of the fourth guide rail, and the other end of the second support is fixedly connected with the moving pair of the second guide rail.
A method for controlling the air quantity of a range hood with double air inlets comprises the following steps:
the method comprises the following steps: carrying out cooking behavior classification and labeling on the collected cooking images to obtain a cooking behavior data set, and carrying out oil smoke amount labeling on the collected cooking images to obtain an oil smoke detection data set;
step two: inputting a cooking behavior data set into an artificial intelligence model to train so as to obtain a classification model, and inputting an oil smoke detection data set into the artificial intelligence model to train so as to obtain a detection model;
step three: classifying the real-time cooking behaviors through a classification model to obtain a cooking behavior result a; then, identifying the oil smoke during cooking by using a detection model to obtain the real-time oil smoke amount;
step four: judging a cooking behavior result b according to the temperature change of the cooking pot body during cooking, and determining an actual cooking behavior c according to the relation between a and b;
step five: determining the air intake of the range hood according to the actual cooking behavior c, the real-time oil smoke amount and the temperature change of the cooking pot body;
the artificial intelligence model is any one of FasterRCNN, YOLOv3 and SSD.
Specifically, in the fourth step, when the actual cooking action c is determined by the relationship between the cooking action result a and the cooking action result b,
wherein maxTempChgAnd (a, b) selecting one of the cooking behavior result a and the cooking behavior result b with larger temperature change of the cooking pot, wherein the temperature change of the frying or frying cooking pot is larger than that of stewing or cooking, and the temperature change of the stewing or cooking pot is larger than that of frying.
Specifically, in the first step, when the collected cooking image is marked, the cooking behaviors include frying, stir-frying, boiling and stewing; when the collected cooking image is labeled with the oil smoke amount, the image is analyzed manually, samples without oil smoke, small smoke, medium smoke and large smoke are divided, and labeling is carried out according to the samples when labeling is carried out subsequently.
Specifically, in the fourth step, when the cooking behavior result b is judged through the temperature change of the cooking pot body during cooking, the temperature change threshold of the cooking pot body is tempthreshThe temperature change value of the cooking pot body within 2 minutes is tempdeltaThe ratio tempratio＝tempdelta/tempthresh(ii) a If 0 < tempratioIf the cooking behavior result is less than 1, the result b is frying or deep-frying; if 1 < tempratioIf the cooking behavior result is less than 2.5, the cooking behavior result b is cooking or stewing; if temp. is detectedratioIf the cooking behavior result is more than 2.5, the result b is stir-frying.
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 temperature change of the cooking pot body in the fifth step, if the actual cooking behavior is frying, the temperature change amount of the cooking pot body is larger than temp in the oil smoke detection processthresh2When the real-time oil smoke amount is small smoke, the air intake amount is adjusted to the maximum gear; wherein tempthresh2A second threshold value for the temperature change of the cooking pot body; and fifthly, when the air intake of the range hood is determined according to the actual cooking behavior, the real-time oil smoke amount and the temperature change of the cooking pot body, if the actual cooking behavior is stewing or boiling, and the temperature change amount of the cooking pot body is larger than temp in the oil smoke detection processthresh2When the actual oil smoke amount is large smoke, the air intake amount is adjusted to a middle gear; wherein tempthresh2Is the second threshold value of the temperature change of the cooking pot body.
Compared with the prior art, the invention has the beneficial technical effects that:
1. according to the invention, cooking oil smoke 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 driving of the lifting mechanism, so that the oil smoke is prevented from escaping from the bottom; the air inlet of the bottom plate can suck a small amount of oil smoke diffused to the upper part into the oil smoke machine; the design of the double air inlets can improve the oil smoke absorption effect and prevent the oil smoke from diffusing; the invention also arranges a closed fixed air box body in the range hood, and arranges the fan in the fixed air box body, thereby improving the negative pressure in the fixed air box body and accelerating the discharge of oil smoke.
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 oil smoke.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a schematic structural view of a fixed bellows body according to the present invention;
FIG. 3 is a schematic view of the volute blower of the present invention;
FIG. 4 is a schematic structural view of a bellows enclosure of the present invention;
FIG. 5 is a schematic structural view of an air guide box according to the present invention;
fig. 6 is a front view of the wind-guiding box of the present invention;
fig. 7 is a side view of the wind-guiding 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 lifting mechanism and the wind guide box body of the present invention after being assembled;
fig. 11 is a flowchart of an air volume control method according to the present invention.
Detailed Description
A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1-4, a range hood with double air inlets comprises a fixed air box body fixedly arranged in the range hood and an air guide box body 21 capable of lifting, 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 enclosing plate 42 surrounding in the circumferential direction, and the air box top plate, the air box bottom plate and the air box enclosing plate surround to form a closed installation space; the range hood comprises a volute fan 43 arranged in the installation space, and the bellows coaming plate is provided with an enclosed air channel facing to an air inlet of the volute fan; the bottom plate of the air box is provided with a bottom plate air inlet; the air guide box body is communicated with the volute fan, and the bottom of the air guide box body is provided with a movable air inlet 223.
According to the invention, cooking oil smoke 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 driving of the lifting mechanism, so that the oil smoke is prevented from escaping from the bottom; the air inlet of the bottom plate can suck a small amount of oil smoke diffused to the upper part into the oil smoke machine; the design of the double air inlets can improve the oil smoke absorption effect and prevent the oil smoke from diffusing; the invention also arranges a closed fixed air box body in the range hood, and arranges the fan in the fixed air box body, thereby improving the negative pressure in the fixed air box body and accelerating the discharge of oil smoke.
As shown in fig. 2, the bellows coaming includes a sealed box 421 at the rear, bellows side plates 424 at both sides, a bellows front plate 423 at the front, and two bellows connecting plates 422 connecting the bellows front plate and the bellows side plates; the width of the air box front plate is smaller than the distance between the two air box side plates, so that the two air box connecting plates are expanded from front to back, and the two air box connecting plates and the air box front plate form the enclosed air channel; the air guide box body is communicated with the seal box, a seal channel is arranged in the seal box, and the size of the seal channel is gradually reduced 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 encircling air channel, thereby facilitating the quick discharge of the oil smoke.
The spiral case flange is fixedly connected with the top plate of the air box through screws and rivets, the spiral case support is fixedly connected with the enclosing plate of the air box through a sunk platform hole screw, and a sunk platform hole can increase local strength and reduce vibration of the spiral case during working.
The range hood further comprises four air box supports 41 uniformly distributed on two sides of the fixed air box body, the air box supports are fixedly connected with the range hood body, the seal box is also fixedly connected with the range hood body, and all the parts are stressed uniformly.
The two air box connecting plates form a horn-shaped opening, the opening faces to an air inlet of the volute fan, and oil smoke can quickly enter the volute fan under the guiding action of the surrounding air channel and the negative pressure action of the volute fan after entering the fixed air box body from the air inlet of the bottom plate.
The bottom plate of the air box is not a plane, but is in an inclined layout gradually decreasing from two sides to the middle, oil drops are gathered, and the oil drops enter the small oil cup along the bottom plate and the oil outlet of the air box.
The small oil cup is installed by adopting a lateral sliding type installation method, a stop structure is designed, and meanwhile, the lowest part of the bottom plate of the air box 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 bottom plate of the bellows is lower than the positions of both sides thereof and is provided with an oil outlet at the lowest position thereof, and the lower part of the bottom plate of the bellows is provided with a small oil cup 47 at a position corresponding to the oil outlet.
As shown in fig. 3, a top plate mounting hole is formed in the top plate of the air box, an air outlet of the volute fan extends out of the top plate mounting hole, and a check valve 44 is arranged at the air outlet of the volute fan.
As shown in fig. 5, the range hood 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 bodies are arranged along the horizontal direction, and the movable air inlets are formed in the telescopic bodies and used for communicating outside air with the air guide box body.
The invention disperses the negative pressure of the range hood to a plurality of positions through a plurality of telescopic bodies which can be telescopic and are provided with movable air inlets, and can perform key treatment on oil smoke generated by different cooking ranges in the cooking process to prevent the oil smoke from escaping; and when the range hood works, the telescopic body can extend to a cooking position under the drive of the lifting mechanism, so that the oil smoke is prevented from escaping from the bottom.
As shown in fig. 5, the bottom of the air guide box body is fixedly provided with a long oil cup 23, and the air guide box body is communicated with the long oil cup; top air deflectors 211 which are inclined inwards are arranged at the tops of the two side walls and the top of the rear wall of the air guide box body; and a bottom air deflector 212 which inclines outwards is arranged at the bottom of the rear wall of the air guide box body.
The description of outward inclination and inward inclination refers to the extending direction of the air deflector when the air deflector is seen from bottom to top, and outward inclination is obtained if the air deflector extends outwards; wherein the inner part of the guide box body is directed to be 'inner' and the outer part of the guide box body is directed to be 'outer'.
The bottom air deflector is favorable for guiding oil smoke to the upper part of the box body, the top air deflector which is inclined inwards can block the oil smoke in the rising process, the oil smoke is condensed, and the obtained oil drops are led to be in a long oil cup.
As shown in fig. 6-10, the number of the telescopic bodies is two, and the two telescopic bodies are respectively a first telescopic body 221 and a second telescopic body 222; a first partition plate 251 and a second partition plate 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 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; 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 of the air guide box body close to the first telescopic 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 total, i.e., two cooking positions are processed. Two linear electric motor settings can prevent that the oil smoke from producing harmful effects to its electric structure between first baffle and the second baffle.
The moving pair of the first motor and the second motor can perform linear reciprocating motion relative to the fixed pair of the first motor and the second motor, and the fixed pair of the first motor and the second motor is fixedly connected with the air guide box body; the sliding pair of the first motor can drive the first telescopic body to extend and retract, and the sliding pair of the second motor can drive the second telescopic body to extend and retract.
The telescopic body extends to the right upper part of the cooking position, so that oil smoke can be more effectively absorbed; when the telescopic body retracts, the whole attractiveness 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 includes a driving assembly fixedly connected to the chassis of the range hood, a large bracket 18 transversely disposed and fixedly connected to a moving end of the driving assembly, and a guide rail assembly for improving stability of the large bracket in a 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 a chassis of the range hood, a screw rod 16 matched with the lifting motor and a small bracket 17; the sliding pair of the screw rod is fixedly connected with the large bracket; one side of the small support is fixedly connected with the bottom of the screw rod, and the other side of the small support is fixedly connected with a case of the range hood; the machine case of the range hood comprises a machine case rear wall arranged on the rear side and machine case side walls arranged on 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 case, and a third guide rail 13 and a fourth guide rail 14 which are symmetrically and fixedly arranged on two side walls of the case; one end of the large support is fixedly connected with the sliding pairs of the first guide rail and the third guide rail, and the other end of the large support is fixedly connected with the sliding 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 component.
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 the fixing hole.
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 movement 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 case, and the moving pair faces to the front side; and the fixed pairs of the third guide rail and the fourth guide rail are respectively and fixedly connected with the side walls of the two cases, and the moving 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 support is fixedly connected with the moving pair of the third guide rail, and the other end of the first support is fixedly connected with the moving pair of the first guide rail; one end of the second support is fixedly connected with the moving pair of the fourth guide rail, and the other end of the second support is fixedly connected with the moving pair of the second guide rail.
Four guide rails all have two sliding pairs, the big support that transversely sets up passes through the screw and is connected with the sliding pair of four guide rails, first support can slide along first guide rail and third guide rail, 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, utilize overall frame structure to improve the stability of wind-guiding box lift in-process, the atress is even reasonable.
As shown in fig. 11, a method for controlling the air volume of a range hood based on artificial intelligence comprises the following steps:
s1: and carrying out cooking behavior classification and labeling on the collected cooking images to obtain a cooking behavior data set, and carrying out oil smoke amount labeling on the collected cooking images to obtain an oil smoke detection data set.
Specifically, in the first step, when the collected cooking image is marked, the cooking behaviors include frying, stir-frying, boiling and stewing; when the collected cooking image is labeled with the oil smoke amount, the image is analyzed manually, samples without oil smoke, small smoke, medium smoke and large smoke are divided, and labeling is carried out according to the samples when labeling is carried out subsequently.
The cooking image is collected, the corresponding cooking behavior in the cooking image is labeled, the oil smoke amount corresponding to the cooking image is labeled, so that the artificial intelligent model can detect the cooking process in real time, and a corresponding cooking behavior result and the real-time oil smoke amount are output.
S2: the cooking behavior data set is input into the artificial intelligence model to be trained to obtain a classification model, and the oil smoke detection data set is input into the artificial intelligence model to be trained to obtain a detection model.
Specifically, in the second step, the artificial intelligence model is any one of fasternn, YOLOv3, and SSD.
Fasternn, YOLOv3, SSD are common artificial intelligence models that can be trained to obtain a classification detection model after a data set is trained.
S3: classifying the real-time cooking behaviors through a classification model to obtain a cooking behavior result a; and then, identifying the oil smoke during cooking by using the detection model to obtain the real-time oil smoke amount.
S4: and (4) judging a cooking behavior result b according to the temperature change of the cooking pot body 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 action c is determined by the relationship between the cooking action result a and the cooking action result b,
wherein maxTempChgAnd (a, b) selecting one of the cooking behavior result a and the cooking behavior result b with larger temperature change of the cooking pot, wherein the temperature change of the frying or frying cooking pot is larger than that of stewing or cooking, and the temperature change of the stewing or cooking pot is larger than that of frying.
The cooking behavior result is confirmed through two data sources, wherein the two data sources are an image data source and a temperature data source respectively; even when no oil smoke is generated, the air intake of the range hood can be judged in advance according to the temperature data, and the condition that the body of a user is damaged due to delayed starting of the range hood is avoided.
Specifically, in the fourth step, when the cooking behavior result b is judged through the temperature change of the cooking pot body during cooking, the temperature change threshold of the cooking pot body is tempthreshThe temperature change value of the cooking pot body within 2 minutes is tempdeltaThe ratio tempratio＝tempdelta/tempthresh(ii) a If 0 < tempratioIf the cooking behavior result is less than 1, the result b is frying or deep-frying; if 1 < tempratioIf the cooking behavior result is less than 2.5, the cooking behavior result b is cooking or stewing; if temp. is detectedratioIf the cooking behavior result is more than 2.5, the result b is stir-frying.
S5: and determining the air intake of the range hood according to the actual cooking behavior c, the real-time oil smoke amount 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 temperature change of the cooking pot body in the fifth step, if the actual cooking behavior is frying, the temperature change amount of the cooking pot body is larger than temp in the oil smoke detection processthresh2When the real-time oil smoke amount is small smoke, the air intake amount is adjusted to the maximum gear; wherein tempthresh2A second threshold value for the temperature change of the cooking pot body; although the amount of oil smoke is small, more oil smoke is generated later in cooking, and the advance smoke control can be realized by adjusting the air intake to the maximum gear.
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 temperature change of the cooking pot body in the fifth step, if the actual cooking behavior is stewing or boiling, and the temperature change amount of the cooking pot body is larger than temp in the oil smoke detection processthresh2When the actual oil smoke amount is large smoke, the air intake amount is adjusted to a middle gear; wherein tempthresh2A second threshold value for the temperature change of the cooking pot body; when in stewing and boiling, even if the amount of oil smoke is big smoke, the oil smoke is mostly water vapor and is harmless to human bodies, so that a larger air intake amount is not needed.
If the actual cooking behavior is frying, the actual amount of the oil smoke is small smoke, and the air intake is adjusted to the lowest gear.
The maximum gear, the middle gear and the minimum gear can be divided according to needs, experiments or experience, or divided equally.
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 attributes 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, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A range hood with double air inlets is characterized by comprising a fixed air box body (40) fixedly arranged in the range hood and an air guide box body (21) capable of lifting, 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 enclosing plate (42) surrounding in the circumferential direction, and the air box top plate, the air box bottom plate and the air box enclosing plate surround to form a closed installation space; the range hood comprises a volute fan (43) arranged in the installation space, and the bellows coaming plate is provided with an enclosed air channel facing to an air inlet of the volute fan; the bottom plate of the air box is provided with a bottom plate air inlet; the air guide box body is communicated with the volute fan, and the bottom of the air guide box body is provided with a movable air inlet (223).
2. The range hood with double air inlets according to claim 1, wherein: the bellows coaming plate 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) connecting the bellows front plate and the bellows side plates; the width of the air box front plate is smaller than the distance between the two air box side plates, so that the two air box connecting plates are expanded from front to back, and the two air box connecting plates and the air box front plate form the enclosed air channel; the air guide box body is communicated with the seal box, a seal channel is arranged in the seal box, and the size of the seal channel is gradually reduced from one side far away from the volute fan to one side close to the volute fan.
3. The range hood with double air inlets according to claim 1, wherein: the range hood 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 bodies are arranged along the horizontal direction, and the movable air inlets are arranged on the telescopic bodies and are used for communicating external air with the air guide box body;
the bottom of the air guide box body is fixedly provided with a long oil cup (23), and the air guide box body is communicated with the long oil cup; top air deflectors (211) which are inclined inwards are arranged at the tops of the two side walls and the top of the rear wall of the air guide box body; the bottom of the rear wall of the air guide box body is provided with an outward inclined bottom air guide plate (212);
the number of the telescopic bodies is two, and the two telescopic bodies are respectively a first telescopic body (221) and a second telescopic body (222); 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 of the air guide box body close to the first telescopic body, and a sixth guide rail (244) is fixed 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.
4. The range hood with double air inlets according to claim 3, wherein: the lifting mechanism comprises a driving assembly fixedly connected with a chassis of the range hood, a large support (18) which is fixedly connected with a moving end of the driving assembly and transversely arranged, and a guide rail assembly for improving the stability of the large support in the lifting process of the large support; the large bracket is fixedly connected with the air guide box body; the driving assembly comprises a lifting motor (15) fixedly connected with a chassis of the range hood, a screw rod (16) matched with the lifting motor and a small bracket (17); the sliding pair of the screw rod is fixedly connected with the large bracket; one side of the small support is fixedly connected with the bottom of the screw rod, and the other side of the small support is fixedly connected with a case of the range hood; the machine case of the range hood comprises a machine case rear wall arranged on the rear side and machine case side walls arranged on 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 case, and a third guide rail (13) and a fourth guide rail (14) which are symmetrically and fixedly arranged on the side walls of the two cases; one end of the large support is fixedly connected with the sliding pairs of the first guide rail and the third guide rail, and the other end of the large support is fixedly connected with the sliding pairs of the second guide rail and the fourth guide rail.
5. The range hood with double air inlets according to claim 4, wherein: the fixed pair of the first guide rail and the second guide rail is fixedly connected with the rear wall of the case, and the moving pair faces to the front side; the fixed pairs of the third guide rail and the fourth guide rail are respectively fixedly connected with the side walls of the two cases, and the moving 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 support is fixedly connected with the moving pair of the third guide rail, and the other end of the first support is fixedly connected with the moving pair of the first guide rail; one end of the second support is fixedly connected with the moving pair of the fourth guide rail, and the other end of the second support is fixedly connected with the moving pair of the second guide rail.
6. A method for controlling the air quantity of a range hood with double air inlets as claimed in any one of claims 1 to 5, comprising the following steps:
the method comprises the following steps: carrying out cooking behavior classification and labeling on the collected cooking images to obtain a cooking behavior data set, and carrying out oil smoke amount labeling on the collected cooking images to obtain an oil smoke detection data set;
step two: inputting a cooking behavior data set into an artificial intelligence model to train so as to obtain a classification model, and inputting an oil smoke detection data set into the artificial intelligence model to train so as to obtain a detection model;
step three: classifying the real-time cooking behaviors through a classification model to obtain a cooking behavior result a; then, identifying the oil smoke during cooking by using a detection model to obtain the real-time oil smoke amount;
step four: judging a cooking behavior result b according to the temperature change of the cooking pot body during cooking, and determining an actual cooking behavior c according to the relation between a and b;
step five: determining the air intake of the range hood according to the actual cooking behavior c, the real-time oil smoke amount and the temperature change of the cooking pot body;
the artificial intelligence model is any one of FasterRCNN, YOLOv3 and SSD.
7. The method for controlling the air quantity of the range hood with the double air inlets as claimed in claim 6, wherein: in the fourth step, when the actual cooking behavior c is determined according to the relationship between the cooking behavior result a and the cooking behavior result b,
wherein maxTempChgAnd (a, b) selecting one of the cooking behavior result a and the cooking behavior result b with larger temperature change of the cooking pot, wherein the temperature change of the frying or frying cooking pot is larger than that of stewing or cooking, and the temperature change of the stewing or cooking pot is larger than that of frying.
8. The method for controlling the air quantity of the range hood with the double air inlets as claimed in claim 6, wherein: in the first step, when the collected cooking images are marked, the cooking behaviors comprise frying, stir-frying, boiling and stewing; when the collected cooking image is labeled with the oil smoke amount, the image is analyzed manually, samples without oil smoke, small smoke, medium smoke and large smoke are divided, and labeling is carried out according to the samples when labeling is carried out subsequently.
9. The method for controlling the air quantity of the range hood with the double air inlets as claimed in claim 8, wherein: when the cooking behavior result b is judged according to the temperature change of the cooking pot body during cooking in the fourth step, the temperature change threshold of the cooking pot body is tempthreshThe temperature change value of the cooking pot body within 2 minutes is tempdeltaThe ratio tempratio＝tempdelta/tempthresh(ii) a If 0 < tempratioIf the cooking behavior result is less than 1, the result b is frying or deep-frying; if 1 < tempratioIf the cooking behavior result is less than 2.5, the cooking behavior result b is cooking or stewing; if temp. is detectedratioIf the cooking behavior result is more than 2.5, the result b is stir-frying.
10. The method for controlling the air quantity of the range hood with the double air inlets as claimed in claim 8, wherein when the air quantity of the range hood is determined according to the actual cooking behavior, the real-time oil smoke quantity and the temperature change of the cooking pan body in the fifth step, if the actual cooking behavior is stir-frying, and the temperature change quantity of the cooking pan body is greater than temp during the oil smoke detection processthresh2When the real-time oil smoke amount is small smoke, the air intake amount is adjusted to the maximum gear; wherein tempthresh2For the temperature change of the cooking pot bodyA second threshold value; and fifthly, when the air intake of the range hood is determined according to the actual cooking behavior, the real-time oil smoke amount and the temperature change of the cooking pot body, if the actual cooking behavior is stewing or boiling, and the temperature change amount of the cooking pot body is larger than temp in the oil smoke detection processthresh2When the actual oil smoke amount is large smoke, the air intake amount is adjusted to a middle gear; wherein tempthresh2Is the second threshold value of the temperature change of the cooking pot body.
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