CN-121977240-A - Range hood and control method and control device thereof

CN121977240ACN 121977240 ACN121977240 ACN 121977240ACN-121977240-A

Abstract

The invention discloses a range hood, a control method and a control device thereof, wherein the range hood comprises at least two independently lifting smoke gathering cavities, the control method comprises the steps of adopting a neural network model, determining pan size information, pan type information, cooking temperature information, concentration exceeding information and smoke movement information based on first video information, first image information and smoke concentration information of a target cooking area, determining suction demand level of the target cooking area according to the pan type information, the cooking temperature information, the concentration exceeding information and the smoke speed information, determining target height of the smoke gathering cavities corresponding to the target cooking area according to the suction demand level and the pan size information, and controlling the smoke gathering cavities to descend from an initial position to the target height. According to the technical scheme, the range hood can improve the range hood efficiency under a complex cooking scene, and the use experience of a user is improved.

Inventors

CHEN YIFAN
ZHENG QIANG
WANG ZHENGYU
REN FUJIA
SUN JINGLONG

Assignees

杭州老板电器股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260309

Claims (10)

1. A control method of a range hood is characterized in that the range hood comprises at least two independently lifting smoke collecting cavities, wherein the smoke collecting cavities are arranged in one-to-one correspondence with kitchen holes on a kitchen range; The control method comprises the following steps: Determining cooker size information, cooker type information, cooking temperature information, concentration exceeding information and lampblack movement information based on first video information, first image information and lampblack concentration information of a target cooking area by adopting a neural network model, wherein the target cooking area is a point position in a cooking state in all kitchen eyes; Determining the suction demand level of the target cooking area according to the cooker type information, the cooking temperature information, the concentration exceeding information and the oil smoke speed information; And determining the target height of the smoke gathering cavity corresponding to the target cooking area according to the suction demand level and the cooker size information, and controlling the smoke gathering cavity to descend from an initial position to the target height, wherein the smoke gathering cavity is positioned in a shell of the range hood in the initial position.
2. The control method according to claim 1, wherein determining the suction demand level of the target cooking zone based on the pan type information, the cooking temperature information, the concentration exceeding information, and the oil smoke speed information, comprises: Determining a first grade corresponding to the pan type information according to a preset mapping relation between the pan type and the suction grade; determining a second grade corresponding to the cooking temperature information according to a preset mapping relation between the cooking temperature and the suction grade; Determining a third grade corresponding to the concentration exceeding information according to a mapping relation between a preset concentration exceeding amount and a suction grade; determining a fourth grade corresponding to the oil smoke speed information according to a preset mapping relation between the oil smoke movement speed and the suction grade; Calculating the suction demand level based on the first level, the second level, the third level, and the fourth level; Wherein, the calculation formula of the suction demand level is as follows ; S represents the suction demand level, sa represents the first level, wa represents the first weight corresponding to the cooker type information, sb represents the second level, wb represents the second weight corresponding to the cooking temperature information, sc represents the third level, wc represents the third weight corresponding to the concentration exceeding information, sd represents the fourth level, and Wd represents the fourth weight corresponding to the oil smoke speed information.
3. The control method according to claim 2, characterized in that the second weight is greater than the third weight, the third weight is greater than the first weight, and the first weight is greater than the fourth weight.
4. The control method according to claim 1, wherein determining the target height of the smoke gathering cavity corresponding to the target cooking zone according to the suction demand level and the pot size information comprises: Calculating a first height according to the suction demand level; determining the height of the pan according to the size information of the pan; judging whether the first height is larger than the height of the cooker or not; If yes, determining the first height as the target height; if not, determining the sum of the height of the pan and a preset distance threshold as the target height.
5. The control method of claim 4, wherein the first height is calculated using the formula: ; wherein H represents the first height, H0 represents the height of the initial position, C represents the descent coefficient, and C >0;S represents the suction demand level.
6. The control method of claim 1, wherein the range hood further comprises a blower; the control method further includes: calculating the target power of the fan based on the suction demand level, and adjusting the running power of the fan to the target power; Wherein, the calculation formula of the target power is as follows ; P represents the target power, si represents the suction demand level corresponding to the ith target cooking area, i is more than or equal to 1, sum (Si) represents the sum of the suction demand levels corresponding to all the target cooking areas, K is a power coefficient, and P0 represents a preset power threshold.
7. The control method of claim 6, wherein the target cooking zone comprises a first cooking zone and a second cooking zone, the smoke gathering cavity comprises a first smoke gathering cavity and a second smoke gathering cavity, the first smoke gathering cavity corresponds to the first cooking zone, the second smoke gathering cavity corresponds to the second cooking zone, the range hood further comprises a first air door and a second air door, the first air door is located between the fan and the first smoke gathering cavity, and the second air door is located between the fan and the second smoke gathering cavity; the control method further includes: calculating a first opening of the first air door based on a first suction demand level corresponding to the first cooking zone and a second suction demand level corresponding to the second cooking zone; Calculating a second opening of the second air door based on the first opening; adjusting the opening degree of the first air door to the first opening degree, and adjusting the opening degree of the second air door to the second opening degree; wherein the calculation formula of the first opening degree is that ; The calculation formula of the second opening degree is that ; Which represents the first opening degree of the valve, Which represents the second opening degree and which is indicative of the second opening degree, Indicating the first suction demand level, And representing the second suction demand level, wherein n represents an amplification factor, and n is more than or equal to 2.
8. The control method according to claim 1, wherein the range hood further comprises a baffle plate on a surface of the housing facing the side of the cooktop; after controlling the smoke collecting cavity to descend from the initial position to the target height, the control method further comprises the following steps: acquiring second video information through the visual sensor; determining an oil smoke escape amount based on the second video information; when the oil smoke escape quantity exceeds a preset escape threshold value, determining a target opening angle of the guide plate according to the oil smoke direction information, and controlling the guide plate to rotate from an initial closed state until the target opening angle is opened.
9. The control device of the range hood is characterized in that the range hood comprises at least two independently lifting smoke collecting cavities, wherein the smoke collecting cavities are arranged in one-to-one correspondence with kitchen holes on a kitchen range; The control device includes: The information determining module is used for determining cooker size information, cooker type information, cooking temperature information, concentration exceeding information and lampblack movement information based on first video information, first image information and lampblack concentration information of a target cooking area by adopting a neural network model, wherein the target cooking area is a point position in a cooking state in all kitchen eyes; The grade determining module is used for determining the suction demand grade of the target cooking area according to the cooker type information, the cooking temperature information, the concentration exceeding information and the oil smoke speed information; The control module is used for determining the target height of the smoke gathering cavity corresponding to the target cooking area according to the suction demand level and the cooker size information, controlling the smoke gathering cavity to descend from an initial position to the target height, and enabling the smoke gathering cavity to be located in a shell of the range hood in the initial position.
10. A range hood, comprising: A housing; The device comprises a shell, at least two smoke gathering cavities, a control device and a control device, wherein the smoke gathering cavities are independently lifted; The tobacco gathering cavity driving mechanisms are arranged in one-to-one correspondence with the tobacco gathering cavities; the visual sensor, the infrared sensor and the oil smoke sensor are arranged on one side of the shell, which faces the cooking bench; A memory for storing one or more programs; A processor; the smoke collecting cavity driving mechanism, the visual sensor, the infrared sensor, the oil smoke sensor and the memory are all electrically connected with the processor, and when the one or more programs are executed by the processor, the processor is enabled to realize the control method according to any one of claims 1-8.

Description

Range hood and control method and control device thereof Technical Field The invention relates to the technical field of kitchen electricity, in particular to a range hood, a control method and a control device thereof. Background With the development of intelligent kitchen appliances, lifting type range hoods are receiving a great deal of attention because of the adjustable position of a fume collecting cavity. However, most of the existing lifting type range hoods only support integral lifting, have limited automation degree and single control logic, cannot adapt to complex cooking scenes, for example, cannot adapt to scenes of cookers with different heights used by left and right cookers, and cannot give consideration to smoking efficiency of different cookers. Disclosure of Invention The invention provides a range hood, a control method and a control device thereof, which are used for improving the range hood efficiency of the range hood in a complex cooking scene and improving the use experience of a user. According to one aspect of the invention, a control method of a range hood is provided, wherein the range hood comprises at least two independently lifting smoke collecting cavities which are arranged in one-to-one correspondence with kitchen holes on a kitchen range; the control method comprises the following steps: Determining cooker size information, cooker type information, cooking temperature information, concentration exceeding information and lampblack movement information based on first video information, first image information and lampblack concentration information of a target cooking area by adopting a neural network model, wherein the target cooking area is a point position in a cooking state in all kitchen eyes; Determining the suction demand level of a target cooking area according to the cooker type information, the cooking temperature information, the concentration exceeding information and the oil smoke speed information; And determining the target height of the smoke gathering cavity corresponding to the target cooking area according to the suction demand level and the pot size information, and controlling the smoke gathering cavity to descend from an initial position to the target height, wherein the smoke gathering cavity is positioned in the shell of the range hood at the initial position. Optionally, determining the suction demand level of the target cooking area according to the pan type information, the cooking temperature information, the concentration exceeding information and the oil smoke speed information includes: determining a first grade corresponding to the pan type information according to a preset mapping relation between the pan type and the suction grade; determining a second grade corresponding to the cooking temperature information according to a preset mapping relation between the cooking temperature and the suction grade; determining a third grade corresponding to the concentration exceeding information according to a mapping relation between a preset concentration exceeding amount and a suction grade; Determining a fourth grade corresponding to the oil smoke speed information according to a preset mapping relation between the oil smoke movement speed and the suction grade; Calculating a suction demand level based on the first level, the second level, the third level, and the fourth level; wherein, the calculation formula of the suction demand level is that ; S represents a suction demand level, sa represents a first level, wa represents a first weight corresponding to cooker type information, sb represents a second level, wb represents a second weight corresponding to cooking temperature information, sc represents a third level, wc represents a third weight corresponding to concentration exceeding information, sd represents a fourth level, and Wd represents a fourth weight corresponding to cooking fume speed information. Optionally, the second weight is greater than the third weight, the third weight is greater than the first weight, and the first weight is greater than the fourth weight. Optionally, determining, according to the suction demand level and the pan size information, a target height of the smoke gathering cavity corresponding to the target cooking area includes: calculating a first height according to the suction demand level; Determining the height of the pan according to the size information of the pan; judging whether the first height is larger than the height of the pot; If yes, determining the first height as a target height; if not, determining the sum of the height of the pan and the preset distance threshold as the target height. Alternatively, the first height is calculated using the following formula: ; wherein H represents the first height, H0 represents the height of the initial position, C represents the descent coefficient, and C >0;S represents the suction demand level. Optionally, the range hood further comprises a fan; The contr