CN114440281A - Control method and control device of range hood and range hood - Google Patents

Abstract

The embodiment of the present invention discloses a control method, a control device and a range hood for a range hood. The method uses a human body sensor to pre-detect the situation of people in a current user operation area, and then controls a temperature sensor to detect the temperature of the cooktop according to the situation of the people. temperature information, and further according to the comparison result of the temperature information and the preset temperature information, the range hood is automatically controlled to work according to the air volume gear corresponding to the preset temperature information. This control method has low cost and high reliability, and can avoid users forgetting when cooking Turning on the range hood leads to the problem that the fumes endanger people's health. There is no need to adjust the exhaust air volume of the range hood by manual control, which improves the automation and intelligence of the range hood.

Description

A range hood control method, control device and range hood

technical field

Embodiments of the present invention relate to the technical field of kitchen appliances, and in particular, to a control method, a control device and a range hood for a range hood.

Background technique

As people's requirements for the degree of intelligence of range hoods are getting higher and higher, more and more range hoods can automatically control the operation of range hoods by identifying the cooking status and the size of range hoods through infrared temperature sensors or image recognition sensors. However, the infrared temperature sensor requires that the angle should be aligned with the stove head, which has poor adaptability to different models. Some models cannot be installed with infrared temperature sensors, and it is easy to trigger false triggers or adjust inaccurately to control the range hood based solely on temperature. In addition, the use of image recognition to identify the size of the fumes to automatically adjust the hood can judge people or cooking actions, and the degree of intelligence is relatively accurate, but the price is too high.

During the cooking process near the stove, different degrees of oil fume will be generated. During the cooking process, it is necessary to turn on the range hood to adjust the air extraction speed to discharge the oil fume. The inventor found that the related technology is to manually control the switch of the range hood, or intelligently control the switch of the range hood according to the concentration of the range hood, but users often forget to turn on the range hood when they start cooking. I realized that turning on the range hood makes the design of the range hood less user-friendly, which affects the user experience and people's health.

SUMMARY OF THE INVENTION

In view of this, the control method, control device, and range hood for a range hood provided by the embodiments of the present invention can avoid the problem that the range hood is endangered to people's health by the user forgetting to turn on the range hood when cooking, and there is no need to adjust the range hood by manual control. The exhaust air volume of the machine improves the automation and intelligence of the range hood.

In a first aspect, an embodiment of the present invention provides a method for controlling a range hood, where the range hood includes a temperature sensor and a human body sensor, the temperature sensor is used to detect the temperature of the cooktop, and the human body sensor is used to detect the temperature of the cooktop. Describe the personnel situation in the user operating area of the range hood;

The control method includes:

Get the personnel situation in the current user operation area;

Controlling the temperature sensor to detect the temperature information of the cooktop according to the personnel situation;

According to the comparison result between the temperature information and the preset temperature information, the range hood is controlled to work according to the air volume gear corresponding to the preset temperature information.

Optionally, the personnel situation includes personnel activities in the user operation area;

According to the situation of the personnel, controlling the temperature sensor to detect the temperature information of the cooktop includes:

In the case that there is human activity in the user operation area, the temperature sensor is controlled to detect the temperature information of the current cooktop.

Optionally, the temperature information includes a current temperature, and the preset temperature information includes a preset temperature interval;

According to the comparison result between the temperature information and the preset temperature information, controlling the range hood to work according to the air volume gear corresponding to the preset temperature information, including:

judging the preset temperature range in which the current temperature is located;

According to the preset temperature interval in which the current temperature is located, the cooking fume is controlled to work according to the air volume gear corresponding to the preset temperature interval.

Optionally, the gear status includes a first air volume gear, a second air volume gear, and a third air volume gear, and the air volume value of the first air volume gear<the air volume value of the second air volume gear< The air volume value of the third air volume gear; the preset temperature interval includes a first preset temperature interval, a second preset temperature interval and a third preset temperature interval, and the temperature in the first preset temperature interval value < temperature value in the second preset temperature interval < temperature value in the third preset temperature interval;

According to the preset temperature interval in which the current temperature is located, controlling the range hood to work according to the component gear corresponding to the preset temperature interval includes:

controlling the range hood to work according to the first air volume gear corresponding to the first preset temperature interval according to the current temperature being within the first preset temperature interval;

controlling the range hood to work according to the second air volume gear corresponding to the second preset temperature interval according to the current temperature being within the second preset temperature interval;

According to the current temperature being within the third preset temperature interval, the range hood is controlled to work according to the third air volume gear position corresponding to the third preset temperature interval.

Optionally, the temperature information includes a temperature difference value, and the temperature difference value is a temperature difference value of the cooktop between a later preset time node and a previous preset time node among multiple preset time nodes;

According to the comparison result between the temperature information and the preset temperature information, controlling the range hood to work according to the air volume gear corresponding to the preset temperature information, including:

When the temperature difference is greater than 0°, control the range hood to increase the current air volume gear to work;

When the temperature difference is less than or equal to 0°, the range hood is controlled to reduce the current air volume gear to work.

Optionally, the temperature information includes an initial temperature difference value, and the initial temperature difference value is a cooktop temperature difference value between the second preset time node and the first preset time node; the gear state includes the first temperature difference. One air volume gear;

According to the comparison result between the temperature information and the preset temperature information, controlling the range hood to work according to the air volume gear corresponding to the preset temperature information, including:

When the initial temperature difference is greater than 0°, the range hood is automatically turned on and the range hood is controlled to work at the first air volume gear.

Optionally, the personnel situation further includes that in the first time period, there is no personnel activity in the user operation area;

After controlling the range hood to work according to the preset air volume gear state corresponding to the temperature information, the control method further includes:

The range hood is controlled to work at a first air volume gear when there is no human activity in the user operating area within the first time period.

Optionally, the personnel situation further includes that in the second time period, there is no personnel activity in the user operation area; wherein the second time period is longer than the first time period;

Under the condition that there is no human activity in the user operation area during the first time period, after controlling the air volume of the range hood to work at the first air volume gear, the control method further includes:

The range hood is automatically turned off according to the fact that there is no human activity in the user operation area within the second time period.

Optionally, the range hood further includes a lighting lamp;

While controlling the range hood to work according to the preset gear state corresponding to the temperature information, the control method further includes:

The lighting lamps are synchronously controlled to be turned on.

In a second aspect, an embodiment of the present invention further provides a control device for a range hood, the control device comprising:

The range hood includes a temperature sensor and a human body sensor, the temperature sensor is used to detect the temperature of the cooktop, the human body sensor is used to detect the situation of persons in the user operation area of the range hood, and the control device includes:

The personnel situation acquisition module is used to obtain the personnel situation in the current user operation area;

a temperature information detection module, configured to control the temperature sensor to detect the temperature information of the cooktop according to the situation of the person;

The air volume gear state control module is configured to control the range hood to work according to the air volume gear state corresponding to the preset temperature information according to the comparison result between the temperature information and the preset temperature information.

In a third aspect, the present invention also provides a range hood, the range hood comprising:

one or more processors;

memory for storing one or more programs;

a human body sensor, the human body sensor is used to detect the situation of people in the user operation area of the range hood;

a temperature sensor, which is used to detect the temperature of the cooktop;

When the one or more programs are executed by the one or more processors, the one or more processors implement the method for controlling a range hood provided by the first aspect.

In the method for controlling a range hood provided by an embodiment of the present invention, the method uses a human body sensor to pre-detect the situation of people in the current operating area of the user, and then controls the temperature sensor to detect the temperature information of the cooktop according to the situation of the people, and further according to the temperature information and the pre-awareness Set the comparison result of the temperature information, and automatically control the range hood to work according to the air volume gear corresponding to the preset temperature information. This control method has low cost and high reliability, and can avoid the user forgetting to turn on the range hood when cooking, causing the fumes to endanger people's health. There is no need to adjust the exhaust air volume of the range hood by manual control, which improves the automation and intelligence of the range hood.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

1 is a schematic flowchart of a control method for a range hood provided by the present invention;

2 is a schematic structural diagram of the working state of a range hood provided by the present invention;

3 is a schematic flowchart of another method for controlling a range hood provided by the present invention;

4 is a schematic flowchart of another method for controlling a range hood provided by the present invention;

5 is a schematic flowchart of another method for controlling a range hood provided by the present invention;

6 is a schematic flowchart of another method for controlling a range hood provided by the present invention;

7 is a schematic flowchart of another method for controlling a range hood provided by the present invention;

8 is a schematic flowchart of another method for controlling a range hood provided by the present invention;

9 is a schematic structural diagram of a control device for a range hood provided by the present invention;

FIG. 10 is a schematic structural diagram of a range hood provided by the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be completely described below with reference to the accompanying drawings in the embodiments of the present invention and through specific implementation manners. Obviously, the described embodiments are a part of the embodiments of the present invention, rather than all the embodiments, based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work, All fall within the protection scope of the present invention.

Example

FIG. 1 is a schematic flowchart of a control method of a range hood provided by the present invention; FIG. 2 is a schematic structural diagram of a working state of a range hood provided by the present invention. The control method can be executed by a processor in the range hood. In this embodiment, the range hood includes a temperature sensor 10, a human body sensor 20 and a lighting lamp 30. The temperature sensor 10 is used to detect the temperature of the cooktop, wherein the temperature sensor 10 It can be installed at the lower end of the range hood, close to the cooker, to better sense the temperature change above when the cooker is turned on; the human sensor 20 is used to detect the situation of people in the user's operating area of the range hood, and can be installed on the control panel facing the user. , can accurately detect whether there is a user operating in front of the range hood; the number of lights 30 can be one or more, and can be installed in the direction of the smoke collecting chamber of the range hood towards the stove head, and the number of auxiliary lighting during cooking can be based on The number of stove fires can be set, and LED lights can be used. 1 and 2, the control method specifically includes the following steps:

S101. Acquire information of personnel in a current user operation area.

Exemplarily, the user operation area may refer to the vicinity of the kitchen stove, on which the user can perform frying, cooking and other cooking operations. In other embodiments, the user operation area may also be a larger area including the area where the stove is located. areas, such as the entire kitchen.

The human body sensor 20 is a sensor that can detect the approach or distance of a human body. The human body sensor 20 includes a microwave human body sensor and a human pyroelectric infrared sensor, wherein the microwave human body sensor adopts microwave technology, transmits electromagnetic waves of a specific frequency, and detects changes in the movement of the human body by detecting the reflected signal; the human body has a constant body temperature, generally in the 36-37 degrees, so it will emit infrared rays of a specific wavelength. The passive infrared probe of the human pyroelectric infrared sensor detects the infrared rays emitted by the human body and works. In this embodiment, by setting the human body sensor 20, an appropriate setting position can be selected according to the actual situation of the cooker and the range hood, for example, it is set on the side of the range hood housing facing the user operation area, and the human body sensor 20 is used to detect the current user operation in advance. The personnel situation in the area, such as detecting that the human body is close or far away in the current user operation area, and feedback the personnel situation to the processor of the range hood, where the personnel situation refers to the current moment, the user operation area Whether there are personnel activities.

S102 , controlling the temperature sensor to detect the temperature information of the cooktop according to the personnel situation.

Exemplarily, the temperature sensor 1 includes an NTC temperature sensor, which is a thermistor, a probe, usually composed of 2 or 3 metal oxides, mixed in a fluid-like clay and calcined in a high temperature furnace. The principle is that the resistance value decreases rapidly as the temperature rises. The processor of the range hood controls the temperature sensor to detect the temperature of the cooktop according to the personnel situation detected by the human body sensor 20 .

S103: Control the range hood to work according to the air volume gear corresponding to the preset temperature information according to the comparison result between the temperature information and the preset temperature information.

Exemplarily, the preset temperature information may refer to a preset temperature value of the cooktop for starting the range hood to work according to each gear. The air volume gear corresponding to the preset temperature information may refer to setting the corresponding air volume gear of the range hood according to the temperature value of the cooktop. The processor automatically controls the range hood to work according to the air volume gear corresponding to the preset temperature information according to the comparison result of the cooktop temperature detected by the temperature sensor and the preset temperature information, for example, when the cooktop temperature exceeds the preset temperature value, For example, if the temperature of the cooktop is 35°, the range hood will automatically start to work at the low air volume; if the temperature of the cooktop is 45°, the range hood will automatically start to work at the medium air volume. The control method can prevent the user from forgetting to turn on the range hood when starting to cook, and only realizes the situation of turning on the range hood when the concentration of the range hood is so high that it choked the nose, which makes the range hood more user-friendly and improves the user experience.

To sum up, the control method of the range hood provided by the embodiment of the present invention detects the situation of people in the current user operation area in advance through the human body sensor, and then controls the temperature sensor to detect the temperature information of the cooktop according to the situation of the people, and further according to the temperature The comparison result of the information and the preset temperature information, the range hood is automatically controlled to work according to the air volume gear corresponding to the preset temperature information. This control method has low cost and high reliability, and can avoid the user forgetting to turn on the range hood when cooking. To solve the problem of human health, there is no need to adjust the exhaust air volume of the range hood by manual control, which improves the automation and intelligence of the range hood.

FIG. 3 is a schematic flowchart of another method for controlling a range hood provided by the present invention. With reference to FIG. 2 and FIG. 3 , optionally, the personnel situation includes personnel activities in the user operation area. Another method for controlling a range hood provided by an embodiment of the present invention includes:

S201. Acquire the personnel situation in the current user operation area.

S202 , in the case that there is human activity in the user operation area, control the temperature sensor to detect the temperature information of the current cooktop.

Exemplarily, according to the human sensor 20, the processor of the range hood detects that there is human activity in the user operation area. When the user is in the user operation area of the cooktop, the cooking fumes generated by the cooktop may make people feel uncomfortable and affect the operation of the cooktop. user's health. The processor automatically starts the temperature sensor to detect the temperature information of the current cooktop, and judges whether it needs to be turned on or increase the air volume according to the temperature sensor when there is human activity in the user's operating area according to the pre-detection of the human body sensor 20. On the one hand It can avoid the problem that the user has been cooking on the stove but forgot to turn on the range hood, and is choked by the fumes and affects their health. At the same time, it can also prevent the temperature sensor from being in the temperature detection state at all times, which can effectively improve the service life of the temperature sensor and improve the accuracy of temperature detection. Ensure the accuracy of the intelligent control of the range hood.

S203. According to the comparison result between the temperature information and the preset temperature information, control the range hood to work according to the air volume gear corresponding to the preset temperature information.

On the basis of the above embodiment, FIG. 4 is a schematic flowchart of another method for controlling a range hood provided by the present invention. With reference to FIG. 2 and FIG. 4 , optionally, the temperature information includes a current temperature, a preset temperature The information includes preset temperature intervals.

S301. Acquire the personnel information in the current user operation area.

S302 , controlling the temperature sensor to detect the temperature information of the cooktop according to the personnel situation.

S303. Determine the preset temperature range in which the current temperature is located.

Exemplarily, the current temperature may refer to the current temperature of the hearth of the cooktop, or the current temperature of the cooking object in the pot on the cooktop. The preset temperature range may refer to one or more cooktop temperature ranges stored in the processor of the range hood in which the range hood starts to work and draws air. The processor compares the current temperature with the preset temperature range of the range hood, and determines that the range hood is obtained. The current temperature is within a preset temperature range.

S304 , according to the preset temperature range in which the current temperature is located, control the cooking fume to work according to the air volume gear corresponding to the preset temperature range.

Exemplarily, according to the preset temperature range in which the current temperature is located, if the current temperature is within the preset temperature range of [0°, 25°], it means that the range hood satisfies the preset temperature range of [0°, 25°]. °, 25°] is the starting condition for the operation of the corresponding air volume gear, the processor range hood automatically controls the range hood to work according to the air volume gear corresponding to the preset temperature interval [0°, 25°]. Among them, the air volume gear corresponding to the temperature interval of [0°, 25°] can be adjusted through the program design of the processor, and no specific restrictions are made here.

On the basis of the above embodiment, FIG. 5 is a schematic flowchart of another method for controlling a range hood provided by the present invention. With reference to FIG. 2 and FIG. 5 , optionally, the gear state includes the first air volume gear. , the second air volume gear and the third air volume gear, the air volume value of the first air volume gear < the air volume value of the second air volume gear < the air volume value of the third air volume gear; the preset temperature interval includes the first preset temperature interval, the second preset temperature interval and the third preset temperature interval, the temperature value in the first preset temperature interval < the temperature value in the second preset temperature interval < the temperature value in the third preset temperature interval. For example, the first air volume gear, the second air volume gear and the third air volume gear can be respectively weak gear, strong gear and stir frying gear. According to the increase of the concentration of oil fume in the stove area, the work of the range hood can be increased in turn. gear, to quickly improve the extraction of oil fume by the fan, and reduce the damage of oil fume to the human body. The first preset temperature interval, the second preset temperature interval and the third preset temperature interval may be respectively [25°, 35°], [36°, 45°] and [46°, ∞]. The position corresponds to the first preset temperature interval, the second air volume gear corresponds to the second preset temperature interval, and the third air volume gear corresponds to the third preset temperature interval, as shown in FIG. 2 and FIG. 5 , Another method for controlling a range hood provided by an embodiment of the present invention includes:

S401. Acquire information of personnel in the current user operation area.

S402 , controlling the temperature sensor to detect the temperature information of the cooktop according to the personnel situation.

S403. Determine the preset temperature range in which the current temperature is located.

S404. According to the current temperature being within the first preset temperature range, control the range hood to work according to the first air volume gear position corresponding to the first preset temperature range.

Specifically, when the human body sensor 20 of the range hood detects that there is human activity in the operating area of the cooktop, the temperature sensor is activated to collect the current temperature value of the cooktop, and the processor collects the current temperature value of the cooktop according to the temperature sensor. Located in the first preset temperature range, that is, in the temperature range [25°, 35°], it can also be understood as judging that the current temperature has reached the preset temperature value of 25°, and is located in the temperature range [25°, 35°] , the processor automatically controls the range hood to work according to the weak gear corresponding to the temperature range [25°, 35°], which not only satisfies a certain smoking effect but also reduces the ventilation noise of the range hood, and improves the intelligent humanization of the range hood. .

S405. According to the current temperature being within the second preset temperature range, control the range hood to work according to the second air volume gear position corresponding to the second preset temperature range.

Specifically, when the human body sensor 20 of the range hood detects that there is human activity in the operating area of the cooktop, the temperature sensor is activated to collect the current temperature value of the cooktop, and the processor collects the current temperature value of the cooktop according to the temperature sensor. Located in the second preset temperature range, that is, in the temperature range [36°, 45°], it can also be understood as judging that the current temperature has reached the preset temperature value of 36°, and is located in the temperature range [36°, 45°] , the processor heats up faster and higher according to the detected current temperature, which meets the conditions for the fan stir-fry gear to work, the processor automatically controls the range hood to work according to the stir-fry gear corresponding to the temperature range [36°, 45°], In order to achieve the effect of rapid smoking, reduce the harm of oil fume to the human body, and improve the intelligent humanization of the range hood.

S406. According to the current temperature being within the third preset temperature range, control the range hood to work according to the third air volume gear position corresponding to the third preset temperature range.

Specifically, when the human body sensor 20 of the range hood detects that there is human activity in the operating area of the cooktop, the temperature sensor is activated to collect the current temperature value of the cooktop, and the processor collects the current temperature value of the cooktop according to the temperature sensor. It is located in the second preset temperature interval, that is, in the temperature interval [46°, ∞], it can also be understood as judging that the current temperature has reached the preset temperature value of 46°, and is located in the temperature interval [46°, ∞], processing According to the detected high current temperature, the device meets the conditions for the fan to work in the strong gear. The processor automatically controls the range hood to work according to the strong gear corresponding to the temperature range [66°, ∞], so as to achieve the effect of rapid smoking and heat dissipation and reduce oil fume. Harm to the human body, improve the intelligent humanization of the range hood.

As a feasible solution, according to the change of the temperature of the cooktop during the cooking process of the user, the processor can perform steps S404, S405, and S406 in sequence. When it is detected that the current temperature of the cooktop continues to rise and the person has not left, it is determined that the user is cooking Cooking that requires manual processing such as cooking will produce a large amount of oil fume. Therefore, the hood control panel can automatically and intelligently control the range hood to execute steps S404, S405, and S406 in sequence, so as to increase the fan air volume of the range hood, so as to achieve a high level of cooking fumes. Good smoking effect.

As another feasible solution, S404, S405, and S406 can be in no order. When it is detected that the current temperature of the stove continues to rise and no one has left, and the user is cooking with high fire, the temperature of the stove rises rapidly, and the temperature of the stove rises rapidly. If the temperature is higher, the processor quickly controls the corresponding air volume to work according to the preset temperature range corresponding to the detected current temperature, so as to achieve rapid smoking and reduce the harmful effect of cooking smoke on the human body.

FIG. 6 is a schematic flowchart of another method for controlling a range hood provided by the present invention. Optionally, the temperature information includes a temperature difference value, and the temperature difference value is a temperature difference value of the cooktop between a next preset time node and a previous preset time node among a plurality of preset time nodes. temperature

With reference to FIG. 2 and FIG. 6 , another method for controlling a range hood provided by an embodiment of the present invention includes:

S501. Acquire the personnel information in the current user operation area.

S502 , controlling the temperature sensor to detect the temperature information of the cooktop according to the personnel situation.

S503. Obtain a temperature difference value corresponding to the current temperature.

S504 , when the temperature difference is greater than 0°, control the range hood to increase the current air volume gear to work.

Specifically, when there is a person in the current user operation area, the processor controls the temperature sensor to continuously detect temperature information of the cooktop in one or more preset time nodes, where the time nodes can be set manually. For example, taking the temperature information of the cooktop in multiple preset time nodes as an example, a cooktop temperature value T is collected every 1s, and (1s, T1), (2s, T2), (3s, T3), ( 4s, T4), etc., obtained by calculating the temperature difference of the cooktop between the next preset time node and the previous preset time node, Δt _2-1 =T2-T1, Δt _3-2 =T3-T2, Δt _{4- 3} = T4-T3. When the temperature differences Δt _2-1 , Δt _3-2 and Δt _4-3 of the cooktop are all greater than 0°, it is judged that the temperature of the cooktop continues to rise at this time, and it is judged that the user is cooking cooking that requires manual processing. At this time, a large amount of oil smoke will be produced, and the processor will automatically control the range hood to increase the current air volume gear to achieve a good smoking heat dissipation effect. Using the judgment that the temperature difference of multiple cooktops is greater than the preset threshold at the same time can effectively improve the judgment accuracy of the cooktop temperature by the range hood, and improve the reliability of the range hood automatically increasing the air volume of the fan.

S505 , when the temperature difference is less than or equal to 0°, control the range hood to lower the current air volume gear to work.

During the operation of the range hood fan, when one, or both, or none of the temperature differences of the cooktop Δt _2-1 , Δt _3-2 , Δt _4-3 are greater than 0°, it is determined that the cooktop is at this time. The temperature has not continued to rise. It can be considered that the current fan windshield has a certain smoking and heat dissipation effect on reducing the temperature of the stove. The processor automatically controls the range hood to reduce the current air volume gear to achieve the effect of saving electricity and improve the suction of range hood. automation and intelligence of machines.

When the temperature differences Δt _2-1 , Δt _3-2 and Δt _4-3 of the cooktop are not greater than 0°, and as the detection time goes on, the processor automatically controls the range hood to reduce the current air volume gear to work at the same time. , the absolute value of the temperature difference is still larger and larger, it can be considered that the current stove temperature continues to drop, the user may have stopped the cooking process of the stove, and the processor automatically controls the range hood to turn off to achieve the effect of saving electricity.

It should be noted that, in this embodiment, only the temperature differences of three sets of cooktops are listed, and the temperature differences of more cooktops are not listed here. Oil absorption is controlled according to the temperature differences of more sets of cooktops. Please refer to the control method provided in the above-mentioned embodiment for the determination method of raising or lowering the air volume of the range hood.

On the basis of the above embodiment, optionally, the temperature information includes an initial temperature difference value, and the initial temperature difference value is the temperature difference value of the cooktop between the second preset time node and the first preset time node; Including the first air volume gear. Among them, the first air volume gear may refer to the weak gear of the range hood, and the fan is in a low-speed exhausting state. Continuing to refer to FIG. 2 and FIG. 6 , another method for controlling a range hood provided by an embodiment of the present invention further includes:

S506, when the initial temperature difference is greater than 0°, automatically turn on the range hood and control the range hood to work at the first air volume gear.

Specifically, when the range hood is in the off state, and in the presence of people in the current user operation area, the processor controls the temperature sensor to continuously detect the temperature information of the cooktop in one or more preset time nodes. Continue to refer to the above As shown in the embodiment, for example, continuing to take the collection of temperature information of the cooktop in multiple preset time nodes as an example, the current temperature of the cooktop collected in the first preset time node is T0, and at the second preset time node. The current temperature of the cooktop is T1, and the initial temperature value of the cooktop is Δt _1-0 = T1-T0. When the processor determines that the initial temperature difference Δt _1-0 is greater than 0°, it will automatically turn on the range hood and control the oil suction The fan of the hood works in a weak gear, which can satisfy a certain smoking effect and reduce the noise of the range hood.

On the basis of the above-mentioned embodiment, with reference to FIG. 2 , FIG. 5 and FIG. 6 , optionally, the personnel situation further includes that there is no personnel activity in the user operation area during the first period of time, wherein the first period of time may be Manual setting through the input device of the range hood, such as setting for 5 minutes. After S404, S405, S406, S504, S505, and S506, another method for controlling a range hood provided by an embodiment of the present invention further includes:

S601. Control the range hood to work at the first air volume gear when there is no human activity in the user operation area within the first time period.

As a feasible solution, in steps S404 and S506, when the range hood works according to the first air volume gear, the human body sensor 20 detects that there is no human activity in the user operation area for the first time period, indicating that at this time the user If you are no longer in the kitchen, you may be making soup or have finished cooking and leave the kitchen. At this time, continue to control the range hood to work at the first air volume gear to ensure that the range hood completely removes the fumes from the cooking area of the stove.

As another feasible solution, in step S405, when the range hood works according to the second air volume gear, the human body sensor 20 detects that there is no human activity in the user operation area for the first time period, indicating that the user is It is no longer in the kitchen, it may be making soup or leaving the kitchen after cooking. At this time, the oil smoke has become smaller. The processor automatically turns down the range hood to work from the second air volume gear to the first air volume gear to reduce noise. and save power.

As another feasible solution, in step S406, when the range hood works according to the third air volume gear, when the human body sensor 20 detects that there is no human activity in the user operation area for the first time period, it means that the user When you are no longer in the kitchen, you may be making soup or have finished cooking and leave the kitchen. At this time, the oil fume has become smaller, and the processor will automatically turn down the range hood from the third air volume gear to the first air volume gear to work further. Reduce noise and save power.

As another feasible solution, in steps S504 and S505, the human body sensor 20 detects that there is no human activity in the user's operating area for the first time period, indicating that the user is no longer in the kitchen at this time, and may be cooking soup. Or after finishing cooking and leaving the kitchen, the lampblack has become smaller at this time, and the processor automatically adjusts the lampblack machine to the first air volume gear to achieve the purpose of reducing noise and saving power.

On the basis of the above-mentioned embodiment, and as shown in FIG. 2 , FIG. 4 and FIG. 6 , optionally, the personnel situation further includes that in the second time period, there is no personnel activity in the user operation area; wherein, the second time period The duration is greater than the duration of the first time period. For example, the time of the second time period is set to 30 minutes. After S601, another method for controlling a range hood provided by an embodiment of the present invention further includes:

602. Automatically turn off the range hood according to the fact that there is no human activity in the user operation area during the second time period.

Specifically, in step S601, the range hood is working according to the first air volume gear. For example, the human body sensor 20 continuously detects that there is still no human activity in the user operation area within 30 minutes, and the temperature detector detects the temperature value of the cooktop. If it is lower than the preset threshold, it means that the user has finished cooking and left the kitchen at this time, and the lampblack has become smaller at this time, and the processor automatically turns off the lampblack machine to save power.

On the basis of the above embodiment, FIG. 7 is a schematic flowchart of another method for controlling a range hood provided by the present invention. As shown in conjunction with FIG. 2 and FIG. 7 , another method for controlling a range hood provided by the present invention includes:

S701. Acquire the personnel situation in the current user operation area.

S702, control the temperature sensor to detect the temperature information of the cooktop according to the personnel situation

S703. According to the comparison result between the temperature information and the preset temperature information, control the range hood to work according to the air volume gear corresponding to the preset temperature information, and synchronously control the lighting to be turned on.

Specifically, when the range hood automatically turns on the human body sensor 20 and detects that there is a person moving, the processor compares the cooktop temperature detected by the temperature sensor with the preset temperature information, for example, when the cooktop temperature exceeds the preset temperature value, Automatically control the range hood to work according to the air volume gear corresponding to the preset temperature information, and at the same time automatically control at least one lamp on the side of the cooktop to turn on. The synchronous control method is adopted. Automatically control the lights, the lights are automatically turned on when someone is cooking, and the lights are automatically turned off after a fixed time delay after the person leaves, which can save energy and achieve the purpose of automatic control of all functions of the range hood.

On the basis of the above embodiment, if the installation conditions permit, the NTC temperature sensor can also use the existing non-contact infrared temperature measurement sensor, the temperature measurement accuracy will be higher, and the response speed will be faster. The reliability of the solution prevents the machine from being turned on and off by mistake or adjusting the air volume by mistake.

FIG. 8 is a schematic flowchart of another method for controlling a range hood provided by an embodiment of the present invention. 2 and 8, in the embodiment of the present invention, the commonly used low-cost temperature sensor and human body sensor are used, and the control cost is reduced by the method of program cross-judgment, and the hood switch, air volume adjustment, lighting can be automatically controlled. All the functions of adjustment improve the stability and reliability of the range hood control system, so that the range hood can obtain a better user experience.

Based on the same inventive concept, FIG. 9 is a schematic structural diagram of a working control device for a range hood provided by an embodiment of the present invention. As shown in FIG. 9 , the control device for the range hood may be composed of software and/or hardware. The control device of the hood can be integrated into the main controller of the range hood. The control device includes a personnel situation acquisition module 801, a temperature information detection module 802, an air volume gear state control module 803 and a main control module 804. The personnel situation acquisition module 801 is used to acquire the personnel situation in the current user operation area; the temperature information detection module 802 is used to control the temperature sensor to detect the temperature information of the cooktop according to the situation of the people; the air volume gear state control module 803 is used to control the range hood according to the comparison result between the temperature information and the preset temperature information Work according to the preset air volume gear state corresponding to the temperature information; the main control module 804 is used to automatically control the range hood to switch the working state and enter the working mode.

The control apparatus provided by the embodiment of the present invention can execute the control method provided by any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

Optionally, the temperature information detection module 802 is further configured to control the temperature sensor to detect the temperature information of the current cooktop in the case of human activity in the user operation area.

Optionally, the air volume gear state control module 803 is further configured to determine the preset temperature interval in which the current temperature is located; and control the cooking fume according to the preset temperature interval in which the current temperature is located. The air volume gear corresponding to the preset temperature interval works.

Optionally, the air volume gear state control module 803 is further configured to control the range hood according to the first air volume gear position corresponding to the first predetermined temperature interval according to the current temperature being within the first preset temperature interval. work; according to the current temperature within the second preset temperature range, control the range hood to work according to the second air volume gear corresponding to the second preset temperature range; according to the current temperature within the third preset temperature range Within the temperature range, the range hood is controlled to work according to the third air volume gear corresponding to the third preset temperature range.

Optionally, the air volume gear state control module 803 is further configured to obtain the temperature difference value corresponding to the current temperature; when the temperature difference value is greater than 0°, control the range hood to increase the current air volume gear position. work; when the temperature difference is less than or equal to 0°, control the range hood to lower the current air volume gear to work.

Optionally, the air volume gear state control module 803 is further configured to automatically turn on the range hood and control the range hood to work at the first air volume gear when the initial temperature difference is greater than 0°.

Optionally, the control device provided in the embodiment of the present invention further includes a first air volume gear working module 805, which is used to control the range hood when there is no personnel activity in the user operation area during the first period of time. Work in the first air volume gear.

Optionally, the control device provided in this embodiment of the present invention further includes a shutdown module 806, configured to automatically shut down the range hood according to the fact that there is no human activity in the user operation area within a second time period.

Optionally, the control device provided by the embodiment of the present invention further includes a lighting lamp module 807, which is used for synchronously controlling the lighting while controlling the range hood to work according to the gear state corresponding to the preset temperature information. Lights on.

Based on the same inventive concept, FIG. 10 is a schematic structural diagram of a range hood provided by an embodiment of the present invention. As shown in FIG. 10 , the range hood includes a processor 901 , a memory 902 , a human sensor 903 , a temperature sensor 904 , and an input device 905 and an output device 906; the number of processors 901 in the range hood can be one or more, and FIG. 10 takes one processor 901 as an example; the human body sensor 903 is electrically connected to the processor 901 for detecting the user of the range hood The situation of personnel in the operating area is sent to the processor 901; the temperature sensor 904 is electrically connected to the processor 901 for collecting the temperature sensor for detecting the temperature of the cooktop and sending the temperature of the cooktop to the processor 901; in the range hood The processor 901 , the memory 902 , the input device 905 and the output device 906 may be connected by a bus or other means, and the connection by a bus is taken as an example in FIG. 10 .

The memory 902, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the operation control method of the range hood in the embodiment of the present invention (for example, oil suction The personnel situation acquisition module 801, the temperature information detection module 802, and the air volume gear state control module 803) in the control device of the hood. The processor 901 executes various functional applications and data processing of the terminal by running the software programs, instructions and modules stored in the memory 902, that is, to implement the above-mentioned working control method of the range hood.

Among them, the input device 905 can be used to receive input digital or character information, and generate signal input related to user setting and function control. The output device 906 may include a display device such as a display screen.

The range hood provided by the embodiment of the present invention adopts commonly used low-cost temperature sensors and human body sensors, reduces the control cost by means of program cross-judgment, and can automatically control all functions of the hood on/off, air volume adjustment, and lighting adjustment. It can prevent the user from forgetting to turn on the range hood when starting to cook, and only realizes the situation of turning on the range hood when the concentration of the range hood is so high that it choked the nose, which improves the stability and reliability of the range hood control system, and makes the range hood obtain Better user experience.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that features of various embodiments of the present invention may be coupled or combined with each other in part or in whole, and may cooperate with each other and technically in various ways driven. Various obvious changes, readjustments, mutual combinations and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (11)

1. The control method of the range hood is characterized in that the range hood comprises a temperature sensor and a human body sensor, wherein the temperature sensor is used for detecting the temperature of a cooking bench, and the human body sensor is used for detecting the personnel condition in a user operation area of the range hood;

the control method comprises the following steps:

acquiring the personnel condition in the current user operation area;

controlling the temperature sensor to detect temperature information of the cooking bench according to the personnel condition;

and controlling the range hood to work according to the air volume gear corresponding to the preset temperature information according to the comparison result of the temperature information and the preset temperature information.

2. The control method of claim 1, wherein the human condition comprises presence of human activity within a user operating area;

according to the personnel condition, controlling the temperature sensor to detect the temperature information of the cooking bench, comprising:

and under the condition that personnel activities exist in the user operation area, controlling the temperature sensor to detect the temperature information of the current cooking bench.

3. The control method according to claim 2, wherein the temperature information includes a current temperature, and the preset temperature information includes a preset temperature interval;

according to the result of comparison of the temperature information and the preset temperature information, controlling the range hood to work according to the preset air volume gear corresponding to the temperature information, comprising:

judging the preset temperature interval where the current temperature is;

and controlling the oil fume suction to work according to the air volume gear corresponding to the preset temperature interval according to the preset temperature interval in which the current temperature is positioned.

4. The control method according to claim 3, wherein the shift state includes a first air volume shift, a second air volume shift, and a third air volume shift, and an air volume value of the first air volume shift < an air volume value of the second air volume shift < an air volume value of the third air volume shift; the preset temperature interval comprises a first preset temperature interval, a second preset temperature interval and a third preset temperature interval, and the temperature value in the first preset temperature interval is smaller than the temperature value in the second preset temperature interval and is smaller than the temperature value in the third preset temperature interval;

according to the preset temperature interval where the current temperature is located, controlling the range hood to work according to the component gear corresponding to the preset temperature interval, and the method comprises the following steps:

controlling the range hood to work according to a first air volume gear corresponding to a first preset temperature interval according to the fact that the current temperature is within the first preset temperature interval;

controlling the range hood to work according to a second air volume gear corresponding to a second preset temperature interval according to the fact that the current temperature is within the second preset temperature interval;

and controlling the range hood to work according to a third air volume gear corresponding to a third preset temperature interval according to the fact that the current temperature is within the third preset temperature interval.

5. The control method according to claim 2, wherein the temperature information includes a temperature difference value between the cooktop temperature of a next preset time node and a previous preset time node among the plurality of preset time nodes;

according to the result of the comparison between the temperature information and the preset temperature information, the range hood is controlled to work according to the preset air volume gear corresponding to the temperature information, and the method comprises the following steps:

obtaining the temperature difference value corresponding to the current temperature;

when the temperature difference is greater than 0 degree, controlling the range hood to improve the current air quantity gear to work;

and when the temperature difference is less than or equal to 0 degree, controlling the range hood to reduce the current air quantity gear to work.

6. The control method of claim 5, wherein the temperature information includes an initial temperature difference value, the initial temperature difference value being a cooktop temperature difference value between a second preset time node and a first preset time node; the gear state comprises a first air quantity gear;

according to the result of the comparison between the temperature information and the preset temperature information, the range hood is controlled to work according to the preset air volume gear corresponding to the temperature information, and the method comprises the following steps:

and when the initial temperature difference is greater than 0 degree, automatically opening the range hood and controlling the range hood to work at a first air quantity gear.

7. The control method according to claim 4 or 6, wherein the human condition further comprises no human activity within the user operation area during a first time period;

after the range hood is controlled to work according to the preset air volume gear state corresponding to the temperature information, the control method further comprises the following steps:

and controlling the range hood to work at a first air volume gear under the condition that no personnel move in the user operation area within a first time period.

8. The control method of claim 7, wherein the human condition further comprises no human activity within the user operating area during a second time period; the duration of the second time period is greater than that of the first time period;

under the condition that no personnel move in the user operation area within a first time period, after the air quantity of the range hood is controlled to work at a first air quantity gear, the control method further comprises the following steps:

and automatically closing the range hood according to the condition that no personnel move in the user operation area in a second time period.

9. The control method according to claim 1, wherein the range hood further comprises an illumination lamp;

when the range hood is controlled to work according to the preset gear state corresponding to the temperature information, the control method further comprises the following steps:

and synchronously controlling the illumination lamps to be turned on.

10. A control device of a range hood is characterized by comprising:

range hood includes temperature sensor and human body sensor, temperature sensor is used for detecting the top of a kitchen range temperature, human body sensor is used for detecting range hood's the regional personnel's condition of user operation, controlling means includes:

the personnel condition acquisition module is used for acquiring the personnel condition in the current user operation area;

the temperature information detection module is used for controlling the temperature sensor to detect the temperature information of the cooking bench according to the personnel condition;

and the air quantity gear state control module is used for controlling the range hood to work according to the air quantity gear state corresponding to the preset temperature information according to the comparison result of the temperature information and the preset temperature information.

11. A range hood, its characterized in that, the range hood includes:

one or more processors;

a memory for storing one or more programs;

the human body sensor is used for detecting the personnel condition in the user operation area of the range hood;

a temperature sensor for detecting a cooktop temperature;

when the one or more programs are executed by the one or more processors, the one or more processors implement the control method of the range hood as set forth in any one of claims 1-9.

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