CN112066432A - Target air volume control method of central flue system - Google Patents
Target air volume control method of central flue system Download PDFInfo
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- CN112066432A CN112066432A CN202010854836.3A CN202010854836A CN112066432A CN 112066432 A CN112066432 A CN 112066432A CN 202010854836 A CN202010854836 A CN 202010854836A CN 112066432 A CN112066432 A CN 112066432A
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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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Abstract
A target air volume control method of a central flue system comprises a range hood and a kitchen range which are arranged in a kitchen room, wherein an internal flue of the range hood is communicated with a common flue to form a smoke exhaust channel, a fan is arranged in the smoke exhaust channel, and a pot is arranged on the kitchen range, and is characterized in that: the cooker is provided with a motion sensor for detecting the motion mode of the cooker, a temperature sensor for detecting the temperature of the bottom of the cooker and a controller for controlling the air quantity of the fan by reading the information of the motion sensor and the temperature sensor. According to the target air volume control method of the central flue system, the pan taking action information of a user can be analyzed through the motion sensor arranged on the pan, the possible large oil smoke situation can be predicted, the trend of sudden change of oil smoke can be predicted in a preposed mode, in addition, after threshold value judgment can be carried out on the pan bottom temperature value measured through the temperature sensor, self-adaptive adjustment can be carried out on the gear position of the fan and the target air volume, and further the user experience is improved.
Description
The application is a divisional application, the application date of the original application is 2019, 7 and 10 months, the application number of the original application is 201910617367.0, and the invention name of the original application is' a central flue system and a target air volume control method thereof
Technical Field
The invention relates to a central flue system, in particular to a target air volume control method of the central flue system.
Background
The range hood is an essential electrical appliance for people to cook and smoke, and a motor of the traditional range hood adopts a fixed gear or a rotating speed, so that the anti-interference self-adaptive capacity to flue resistance and natural wind convection when doors and windows are opened simultaneously is poor. The smoke generation amount is a changing curve in the cooking process of a user, experiments easily find that general big smoke mainly appears at the moment when dishes, seasonings, water and the like fall into a pot, and in the process that the user turns over the pot to stir, the smoke amount in other cooking time is small and the change is small, and a high-rise public flue occupies a small residential area as far as possible because the number of users connected into the high-rise public flue is generally large (generally, the number of floors and the number of users share one public flue), the design is generally small (for example, 40 percent) at the same time, the starting rate is increased, or the increase of the air amount in the flue easily causes the conditions of jam and backflow. The high-rise air quantity central control range hood generally adopts a method of controlling air quantity of each floor, controls target flow within a certain range, meets basic smoke exhaust requirements, can solve the problem of uneven flow distribution of different floors to a certain extent, but is difficult to deal with suddenly increased oil smoke and interference. The existing traditional oil smoke escape interference detection method mainly uses an oil smoke sensor or a camera to detect the appearance of smoke-free fog or the change of a quantitative value to judge the size and the escape of oil smoke, and the detection methods increase the rotating speed or the target air volume to carry out post-feedback type adsorption after the oil smoke is diffused out.
A control system of the range hood comprises a main control chip, a slave control chip and a sensor group, wherein the main control chip is connected with the sensor group, the motor driving module consists of an intelligent power module, a motor driving chip and a sampling and protecting circuit, the sensor group detects the running state of the range hood and inputs the running state into the main control chip, the main control chip determines an air volume value and sends the air volume value to the motor driving module after judging the running state of the range hood so as to drive a direct current motor to work, the direct current motor detects the oil smoke and water vapor concentration of an air inlet through an air inlet oil smoke and water vapor sensor, and the compensation amount is calculated according to the deviation amount of the oil smoke concentration or the water vapor concentration from an initial set range and adjusts the current air volume And (4) an air quantity value. The automatic air quantity regulation control device and the control method have certain hysteresis, because the deviation quantity of the sensed oil smoke or water vapor concentration of the sensor group deviating from the initial set range is calculated to calculate the compensation quantity of the air quantity and determine the current required air quantity value, and the rotating speed of the fan motor reaches the value of the required air quantity gear, a certain time is needed, if in quick frying, the fan motor of the range hood does not rotate or is still at the rotating speed of small air quantity at the beginning, the oil smoke sensor senses the oil smoke with larger concentration and transmits the information to the control device, and before the rotating speed of the fan motor reaches the value of the larger air quantity gear which is enough to discharge the current oil smoke, partial oil smoke is diffused outwards to pollute the kitchen environment.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a central flue system capable of controlling the air volume of the fan by obtaining the movement mode of the pan.
The second technical problem to be solved by the present invention is to provide a target air volume control method for a central flue system, which can adaptively adjust the air volume according to the pre-posed pre-judgment of the possible interference situation, in view of the above prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: this central flue system, including installing range hood and the cooking utensils in the kitchen, range hood's inside flue and public flue are linked together in order constituting the smoke exhaust passage install the fan in the smoke exhaust passage be equipped with pot, its characterized in that on the cooking utensils: the cooker is provided with a motion sensor for detecting the motion mode of the cooker, a temperature sensor for detecting the temperature of the bottom of the cooker and a controller for controlling the air quantity of the fan by reading the information of the motion sensor and the temperature sensor.
Preferably, the fan is an indoor fan installed inside the range hood and/or a main fan installed on the top of the common flue.
In order to detect the temperature of the bottom of the pan more accurately, the temperature sensor is mounted on the burner of the cooker.
Preferably, the motion sensor is a gyroscope mounted on a handle of the pan.
As another preferred scheme, the motion sensors are a first acceleration sensor and a second acceleration sensor which are installed on the pan, the first acceleration sensor is used for detecting the accelerated motion of the pan in the vertical direction, and the second acceleration sensor is used for detecting the accelerated motion of the pan in the horizontal direction.
In order to avoid the acceleration sensor from being interfered by flame, the first acceleration sensor and the second acceleration sensor are arranged on the outer side surface of the pot and close to the upper edge of the pot.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the target air volume control method of the central flue system is characterized by comprising the following steps of:
1) starting the range hood;
2) the range hood operates in a default gear;
3) reading information of the gyroscope and the temperature sensor;
4) firstly, judging whether the pan moves relatively by using gyroscope feedback information;
5) if the relative movement is detected, judging the movement form of the pan;
6) if the rotation is judged, the dish is filled or the pot is washed, and the rotating speed of the fan or the target air volume is reduced;
7) if the pot is moved up and down, judging to prepare a top pot, and increasing the rotating speed of a fan or the target air volume;
8) if the washing machine moves left and right, judging that the washing machine is ready to be taken away, and reducing the rotating speed of a fan or the target air volume;
9) continuously judging whether the pan moves reversely or not on the basis of the step 8);
10) if the fan moves reversely, the rotating speed of the fan or the target air volume is increased;
11) if the mobile terminal does not move reversely, the mobile terminal keeps running under the current condition;
12) if the pot does not move relatively in the step 4), the temperature T measured by the temperature sensor is used for carrying out interval judgment with threshold values T1 and T2;
13) if T is larger than T2, the gear or the target air volume is adjusted to be high;
14) if T is less than or equal to T1, judging that the temperature of the user is not increased to a smoke point, and turning down the gear of the fan or the target air volume;
15) if T2 is more than T1, judging the relation between the temperature time change rate g and the threshold values m and n;
16) if g is larger than or equal to m, judging that the temperature rise is too fast, prompting to add oil or preventing the cookware from being dried; keeping the current gear running
17) M is more than g and is more than or equal to n, and the current state is kept to operate;
18) if g is less than 0, judging that food materials or seasonings are just added, causing the temperature to be quickly reduced, increasing the gear of a fan or the target air volume to operate, and timing by t 1;
19) and step 18), keeping running for t2 time;
20) t1 is compared with the set time s for judgment;
21) if t1 is more than s, the temperature is continuously reduced, the actions of reducing the firepower, adding water to wash the pot and the like of the user are judged, the gear of the fan or the target air volume is reduced, and t1 is cleared to 0;
22) t1 is less than or equal to s, and the current state is kept running;
23) and repeating the steps 3) to 22) until the fan is turned off.
Another technical solution adopted by the present invention to solve the second technical problem is: the target air volume control method of the central flue system is characterized by comprising the following steps of:
1) starting the range hood;
2) the range hood operates in a default gear;
3) reading information of the first acceleration sensor, the second acceleration sensor and the temperature sensor;
4) firstly, judging whether the pan moves relatively by using information of a first acceleration sensor and a second acceleration sensor;
5) if the relative movement of the pot is judged, judging whether the pot obviously accelerates in the vertical direction;
6) if the vertical direction has obvious accelerated motion, judging to prepare a top pan, and increasing the target air volume or the rotating speed of a fan;
7) if no obvious accelerated motion exists in the vertical direction, judging whether the obvious accelerated motion exists in the horizontal direction;
8) if no obvious accelerated motion exists in the horizontal direction, the current state is kept to operate;
9) if the horizontal direction has obvious accelerated motion, judging that the pan is ready to be taken out, and reducing the target air volume or the target rotating speed of the fan;
10) judging whether the pan moves reversely on the basis of the step 9);
11) if the fan moves reversely, the rotating speed of the fan or the target air volume is increased;
12) if the mobile terminal does not move reversely, the mobile terminal keeps running under the current condition;
13) if the pot does not move relatively in the step 4), the temperature T measured by the temperature sensor is used for carrying out interval judgment with threshold values T1 and T2;
14) if T is larger than T2, the gear or the target air volume is adjusted to be high;
15) if T is less than or equal to T1, judging that the temperature of the user is not increased to a smoke point, and turning down a gear or a target air volume;
16) if T2 is more than T1, judging the relation between the temperature time change rate g and the threshold values m and n;
17) if g is larger than or equal to m, judging that the temperature rise is too fast, and improving oil filling or preventing the cookware from being dry-burned; keeping the current gear running
18) M is more than g and is more than or equal to n, and the current state is kept to operate;
19) if g is less than 0, judging that food materials or seasonings are just added, initiating rapid temperature reduction, increasing gears or operating at a target air volume, and timing by t 1;
20) and step 19), keeping running for t2 time;
21) t1 is compared with the set time s for judgment;
22) if t1 is more than s, the temperature is continuously reduced, the actions of reducing the firepower, adding water to wash the pot and the like of the user are judged, the gear of the fan or the target air volume is reduced, and t1 is cleared to 0;
23) t1 is less than or equal to s, and the current state is kept running;
24) and repeating the step 3) to the step 23) until the fan is turned off.
Further preferably, in the step 14), the user is prompted to decrease the heating power while the gear is shifted up or the target air volume is being shifted down.
Compared with the prior art, the invention has the advantages that: this central flue system can take pot action information to the user through the motion sensor of installing on the pot and carry out the analysis and predict the big oil smoke condition that probably appears, carries out the trend of leading prediction oil smoke sudden change from this, arranges the amount of wind target of different user states more rationally, inhales away the running cigarette that probably produces or latent absorption negative pressure in advance to, can also carry out threshold value judgement back through the pot bottom temperature value that temperature sensor surveyed, do self-adaptation adjustment to fan gear and target amount of wind, and then promote user experience.
Drawings
FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a cooker and a pan according to a first embodiment of the invention;
fig. 3 is a structural sectional view of a range hood according to a first embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a central flue system according to a first embodiment of the present invention;
fig. 5 is a control logic diagram of a target air volume control method according to a first embodiment of the present invention;
FIG. 6 is a schematic structural view of a cooker and a pan in the second embodiment of the invention;
fig. 7 is a control logic diagram of a target air volume control method according to a second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The first embodiment is as follows:
as shown in fig. 1 to 4, the central flue system of the present embodiment includes a range hood 1 and a kitchen range 2 installed in a kitchen, an internal flue of the range hood 1 is communicated with a common flue 3 to form a smoke exhaust channel, a fan is installed in the smoke exhaust channel, a pan 4 is installed on the kitchen range 2, and a motion sensor for detecting a motion mode of the pan is installed on a handle 41 of the pan 4. In this embodiment, the motion sensor adopts the gyroscope 7, and the gyroscope 7 is used as a common sensor, so that not only is the cost low, but also the precision is good. The common action pattern of the user in the cooking process is relatively fixed, for example: the up-down movement with a certain frequency generally only occurs in a top-frying scene, the whole pan 4 rotates around the shaft of the handle 41, or the translation generally is to contain vegetables or prepare to go to a water tank to wash the pan or move reversely after the pan is washed. Therefore, whether the user is in a characteristic scene of washing a pot, frying a pot, holding vegetables and the like can be judged by identifying whether the gyroscope 7 rotates, moves up and down, translates and the like. In addition, a temperature sensor 10 for detecting the temperature of the bottom of the pot is attached to the burner 21 of the cooking range 2.
As shown in fig. 3, a range hood 1 with a fan is adopted, that is, the fan is an indoor fan 5 installed inside the range hood 1. As shown in fig. 4, a range hood without a fan is adopted, i.e., the fan is a main fan 6 installed on the top of the common flue 3. In addition, the central flue system further comprises a controller (not shown in the figure) capable of reading information of the temperature sensor 10 of the gyroscope 7, the controller is installed on the range hood 1, and the controller correspondingly adjusts the rotating speed of the fan and the target air volume according to the read information of the gyroscope 7 and the temperature sensor 10 and can also adjust the rotating speed and the target air volume by combining with an outdoor host.
As shown in fig. 5, the target air volume control method of the central flue system includes the steps of:
1) starting the range hood;
2) the range hood operates in a default gear;
3) reading information of the gyroscope and the temperature sensor;
4) firstly, judging whether the pan moves relatively by using gyroscope feedback information;
5) if the relative movement is detected, judging the movement form of the pan;
6) if the rotation is judged, the dish is filled or the pot is washed, and the rotating speed of the fan or the target air volume is reduced;
7) if the pot is moved up and down, judging to prepare a top pot, and increasing the rotating speed of a fan or the target air volume;
8) if the washing machine moves left and right, judging that the washing machine is ready to be taken away, and reducing the rotating speed of a fan or the target air volume;
9) continuously judging whether the pan moves reversely or not on the basis of the step 8);
10) if the fan moves reversely, the rotating speed of the fan or the target air volume is increased;
11) if the mobile terminal does not move reversely, the mobile terminal keeps running under the current condition;
12) if the pot does not move relatively in the step 4), the temperature T measured by the temperature sensor is used for carrying out interval judgment with threshold values T1 and T2;
13) if T is larger than T2, the gear or the target air volume is adjusted to be high;
14) if T is less than or equal to T1, judging that the temperature of the user is not increased to a smoke point, and turning down the gear of the fan or the target air volume;
15) if T2 is more than T1, judging the relation between the temperature time change rate g and the threshold values m and n;
16) if g is larger than or equal to m, judging that the temperature rise is too fast, prompting to add oil or preventing the cookware from being dried; keeping the current gear running
17) M is more than g and is more than or equal to n, and the current state is kept to operate;
18) if g is less than 0, judging that food materials or seasonings are just added, causing the temperature to be quickly reduced, increasing the gear of a fan or the target air volume to operate, and timing by t 1;
19) and step 18), keeping running for t2 time;
20) t1 is compared with the set time s for judgment;
21) if t1 is more than s, the temperature is continuously reduced, the actions of reducing the firepower, adding water to wash the pot and the like of the user are judged, the gear of the fan or the target air volume is reduced, and t1 is cleared to 0;
22) t1 is less than or equal to s, and the current state is kept running;
23) and repeating the steps 3) to 22) until the fan is turned off.
In addition, step 13) can remind the user to turn down the firepower while the gear is turned up or the target air volume is turned up.
After the control method is adopted, whether a user is washing a pot, containing vegetables, turning the pot and stir-frying and other characteristic scenes is judged by identifying whether the gyroscope rotates, translates, moves up and down and other actions, the current rotating speed or the target air volume condition is adjusted, the advance in time is guaranteed through prediction, the high-performance requirement of an oil smoke sensor and a camera on the real-time performance of a controller is reduced, the oil smoke can be guaranteed to be diffused or sucked away before escaping through calculation of a slight slow point, and after threshold judgment is carried out by combining a temperature value measured by a temperature sensor, self-adaptive adjustment is carried out on the gear position of a fan and the target air volume, so that the user experience is improved.
Example two:
as shown in fig. 6, the present embodiment is the same as the first embodiment except that a different motion sensor is used. The motion sensors of the present embodiment are a first acceleration sensor 8 and a second acceleration sensor 9, wherein the first acceleration sensor 8 and the second acceleration sensor 9 are mounted at positions close to the upper edge on the outer side surface of the pan 4. The first acceleration sensor 8 is arranged to detect an accelerated movement of the pan 4 in a vertical direction and the second acceleration sensor 9 is arranged to detect an accelerated movement of the pan 4 in a horizontal direction.
As shown in fig. 7, the target air volume control method of the present embodiment includes the steps of:
1) starting the range hood;
2) the range hood operates in a default gear;
3) reading information of the first acceleration sensor, the second acceleration sensor and the temperature sensor;
4) firstly, judging whether the pan moves relatively by using information of a first acceleration sensor and a second acceleration sensor;
5) if the relative movement of the pot is judged, judging whether the pot obviously accelerates in the vertical direction;
6) if the vertical direction has obvious accelerated motion, judging to prepare a top pan, and increasing the target air volume or the rotating speed of a fan;
7) if no obvious accelerated motion exists in the vertical direction, judging whether the obvious accelerated motion exists in the horizontal direction;
8) if no obvious accelerated motion exists in the horizontal direction, the current state is kept to operate;
9) if the horizontal direction has obvious accelerated motion, judging that the pan is ready to be taken out, and reducing the target air volume or the target rotating speed of the fan;
10) judging whether the pan moves reversely on the basis of the step 9);
11) if the fan moves reversely, the rotating speed of the fan or the target air volume is increased;
12) if the mobile terminal does not move reversely, the mobile terminal keeps running under the current condition;
13) if the pot does not move relatively in the step 4), the temperature T measured by the temperature sensor is used for carrying out interval judgment with threshold values T1 and T2;
14) if T is larger than T2, the gear or the target air volume is adjusted to be high;
15) if T is less than or equal to T1, judging that the temperature of the user is not increased to a smoke point, and turning down a gear or a target air volume;
16) if T2 is more than T1, judging the relation between the temperature time change rate g and the threshold values m and n;
17) if g is larger than or equal to m, judging that the temperature rise is too fast, and improving oil filling or preventing the cookware from being dry-burned; keeping the current gear running
18) M is more than g and is more than or equal to n, and the current state is kept to operate;
19) if g is less than 0, judging that food materials or seasonings are just added, initiating rapid temperature reduction, increasing gears or operating at a target air volume, and timing by t 1;
20) and step 19), keeping running for t2 time;
21) t1 is compared with the set time s for judgment;
22) if t1 is more than s, the temperature is continuously reduced, the actions of reducing the firepower, adding water to wash the pot and the like of the user are judged, the gear of the fan or the target air volume is reduced, and t1 is cleared to 0;
23) t1 is less than or equal to s, and the current state is kept running;
24) and repeating the step 3) to the step 23) until the fan is turned off.
In addition, step 14) can remind the user to turn down the fire power while the gear is turned up or the target air volume is turned up.
Claims (5)
1. A target air volume control method of a central flue system comprises a range hood (1) and a kitchen range (2) which are installed in a kitchen room, wherein an inner flue of the range hood (1) is communicated with a public flue (3) to form a smoke exhaust channel, a fan is installed in the smoke exhaust channel, a pot (4) is arranged on the kitchen range (2), a motion sensor used for detecting the motion mode of the pot (4) is installed on the pot (4), a temperature sensor (10) used for detecting the temperature of the bottom of the pot is installed on the kitchen range (2), the central flue system further comprises a controller used for controlling the air volume of the fan by reading the information of the motion sensor and the temperature sensor (10), the motion sensor comprises a first acceleration sensor (8) and a second acceleration sensor (9) which are installed on the pot (4), and the first acceleration sensor (8) is used for detecting the accelerated motion of the pot (4) in the vertical direction, the second acceleration sensor (9) is used for detecting the accelerated motion of the pan (4) in the horizontal direction, and the target air volume control method is characterized by comprising the following steps:
1) starting the range hood;
2) the range hood operates in a default gear;
3) reading information of the first acceleration sensor, the second acceleration sensor and the temperature sensor;
4) firstly, judging whether the pan moves relatively by using information of a first acceleration sensor and a second acceleration sensor;
5) if the relative movement of the pot is judged, judging whether the pot obviously accelerates in the vertical direction;
6) if the vertical direction has obvious accelerated motion, judging to prepare a top pan, and increasing the target air volume or the rotating speed of a fan;
7) if no obvious accelerated motion exists in the vertical direction, judging whether the obvious accelerated motion exists in the horizontal direction;
8) if no obvious accelerated motion exists in the horizontal direction, the current state is kept to operate;
9) if the horizontal direction has obvious accelerated motion, judging that the pan is ready to be taken out, and reducing the target air volume or the target rotating speed of the fan;
10) judging whether the pan moves reversely on the basis of the step 9);
11) if the fan moves reversely, the rotating speed of the fan or the target air volume is increased;
12) if the mobile terminal does not move reversely, the mobile terminal keeps running under the current condition;
13) if the pot does not move relatively in the step 4), the temperature T measured by the temperature sensor is used for carrying out interval judgment with threshold values T1 and T2;
14) if T is larger than T2, the gear or the target air volume is adjusted to be high;
15) if T is less than or equal to T1, judging that the temperature of the user is not increased to a smoke point, and turning down a gear or a target air volume;
16) if T2 is more than T1, judging the relation between the temperature time change rate g and the threshold values m and n;
17) if g is larger than or equal to m, judging that the temperature rise is too fast, and improving oil filling or preventing the cookware from being dry-burned; keeping the current gear running
18) M is more than g and is more than or equal to n, and the current state is kept to operate;
19) if g is less than 0, judging that food materials or seasonings are just added, initiating rapid temperature reduction, increasing gears or operating at a target air volume, and timing by t 1;
20) and step 19), keeping running for t2 time;
21) t1 is compared with the set time s for judgment;
22) if t1 is more than s, the temperature is continuously reduced, the actions of reducing the firepower, adding water to wash the pot and the like of the user are judged, the gear of the fan or the target air volume is reduced, and t1 is cleared to 0;
23) t1 is less than or equal to s, and the current state is kept running;
24) and repeating the step 3) to the step 23) until the fan is turned off.
2. The method for controlling a target air volume of a central flue system according to claim 1, comprising: the fan is an indoor fan (5) arranged in the range hood (1) and/or a main fan (6) arranged at the top of the common flue (3).
3. The method for controlling a target air volume of a central flue system according to claim 1, comprising: the temperature sensor (10) is arranged on a burner (21) of the stove (2).
4. The method for controlling a target air volume of a central flue system according to claim 1, comprising: the first acceleration sensor (8) and the second acceleration sensor (9) are arranged on the outer side surface of the pot (4) and close to the upper edge of the pot (4).
5. The method for controlling a target air volume of a central flue system according to claim 1, comprising: and 14) reminding a user to reduce the firepower while adjusting the gear to be higher or the target air volume.
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| CN202010854836.3A CN112066432B (en) | 2019-07-10 | 2019-07-10 | Target air volume control method of central flue system |
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| CN202010854836.3A CN112066432B (en) | 2019-07-10 | 2019-07-10 | Target air volume control method of central flue system |
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| CN113531618A (en) * | 2021-07-20 | 2021-10-22 | 华帝股份有限公司 | Control method of range hood |
| CN115823636A (en) * | 2023-02-24 | 2023-03-21 | 杭州老板电器股份有限公司 | Self-learning smoking machine control method |
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| CN111322648B (en) * | 2020-02-27 | 2022-03-18 | 宁波方太厨具有限公司 | Control method of cooking device |
| CN111336557B (en) * | 2020-03-05 | 2022-04-19 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN112228928B (en) * | 2020-09-04 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood operation control method and range hood |
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Also Published As
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| CN110500624B (en) | 2020-11-24 |
| CN112066432B (en) | 2021-08-20 |
| CN110500624A (en) | 2019-11-26 |
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