A method for interlocking control of a range hood and a stove

Abstract

The present invention discloses a method for controlling the linkage between a range hood and a stove, comprising the following steps: S1: The main controller of the range hood receives a status signal from the main controller of the stove, and the status signal includes temperature signals of two stove heads detected by two temperature detection devices; S2: When the main controller of the range hood receives that the temperature of any stove head exceeds the threshold temperature, it reads the control parameters corresponding to that stove head; S3: The main controller of the range hood reads the detection value of the smoke detection device and compares it with the smoke threshold corresponding to the stove head for which the control parameters are read. When the detection value exceeds the corresponding smoke threshold, the main controller of the range hood controls the exhaust fan to rotate according to the read control parameters; By improving and optimizing the control method of the linkage between the range hood and the stove, the present invention can enable users to obtain the same cooking experience when cooking with any one of the stove heads of the stove, and by determining specific control parameters through experiments, the problem of poor cooking experience of users can be effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of kitchen appliances, and particularly relates to a method for controlling the linkage between a range hood and a gas stove. Background Art

[0002] The range hood and the gas stove are usually used in pairs. The two burners of the gas stove are symmetrically arranged left and right. If the range hood has only one air suction opening, this air suction opening is symmetrically arranged left and right with respect to the middle position of the range hood. If the range hood has two left and right air suction openings, the left air suction opening and the right air suction opening are also symmetrically arranged left and right. Therefore, when the range hood is provided with a smoke detection device and the smoke detection device corresponds to the middle position of the range hood housing, according to the assumption, if the same cooking is performed, whether the left burner or the right burner is used, the smoke concentration curves detected by the smoke detection device should be very close. However, when the applicant conducted oil-boiling experiments and water-boiling experiments using the two burners of the gas stove respectively, the smoke concentration curves detected by the smoke detection device were quite different. The result reflected is that when cooking with different burners, the sensitivity of the same smoke detection device varies greatly. When performing the linkage control between the range hood and the gas stove in this way, if the same linkage control is used for both burners, it will cause different cooking experiences for users when cooking with different burners, and it is very easy to have problems with poor cooking experiences. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for controlling the linkage between a range hood and a gas stove, aiming to improve the problem that when performing the linkage control between the range hood and the gas stove, using the same linkage control for both burners easily leads to poor cooking experiences for users.

[0004] To achieve the above purpose, a method for controlling the linkage between a range hood and a gas stove is provided. The range hood includes a range hood housing, a smoke exhaust duct is formed in the range hood housing, a smoke detection device and a smoke exhaust fan are arranged in the smoke exhaust duct, the motor driving the smoke exhaust fan to rotate is a variable-frequency motor, the cooking appliance has at least two burners each including a temperature detection device, and the cooking appliance main control is communicatively connected to the range hood main control; two smoke sensing thresholds corresponding to the two burners respectively are arranged inside the range hood main control, and the magnitudes of these two smoke sensing thresholds are different;

[0005] The method includes the following steps:

[0006] S1: The range hood main control receives a status signal from the cooking appliance main control, and this status signal includes the temperature signals of the two burners detected by the two temperature detection devices;

[0007] S2: When the range hood main control receives that the temperature of any burner exceeds the threshold temperature, it reads the control parameter corresponding to this burner;

[0008] S3: The main control unit of the range hood reads the detection value of the smoke sensor detection device, and compares it with the smoke sensor threshold value corresponding to the cooking hob for which the control parameter is read. When the detection value exceeds the corresponding smoke sensor threshold value, the main control unit of the range hood controls the exhaust fan to rotate according to the read control parameter.

[0009] Further, the two cooking hobs are a first cooking hob and a second cooking hob respectively, and the two smoke sensor threshold values are a first smoke sensor threshold value and a second smoke sensor threshold value respectively. The first cooking hob corresponds to the first smoke sensor threshold value, the second cooking hob corresponds to the second smoke sensor threshold value. The first smoke sensor threshold value is greater than the second smoke sensor threshold value, and the second smoke sensor threshold value is only 10 - 50% of the first smoke sensor threshold value.

[0010] Further, when it is detected that the temperature of the first cooking hob exceeds the threshold temperature and then it is found that the temperature of the second cooking hob also exceeds the threshold temperature, or when it is detected that the temperature of the second cooking hob exceeds the threshold temperature and then it is found that the temperature of the first cooking hob also exceeds the threshold temperature, the main control unit of the range hood reads the detection value of the smoke sensor detection device and compares it with the second smoke sensor threshold value corresponding to the second cooking hob.

[0011] Further, the control parameter corresponding to the first cooking hob is different from the control parameter corresponding to the second cooking hob. When the detection value of the smoke sensor detection device read by the main control unit of the range hood exceeds the second smoke sensor threshold value, the main control unit of the range hood controls the exhaust fan to rotate according to the control parameter of any one of the cooking hobs read.

[0012] Further, the control parameter corresponding to the first cooking hob is different from the control parameter corresponding to the second cooking hob. The control parameter includes the frequency modulation change data of the variable frequency motor, and the magnitudes of the frequency modulation change data corresponding to the first cooking hob and the second cooking hob are different; when the detection value of the smoke sensor detection device read by the main control unit of the range hood exceeds the second smoke sensor threshold value, the main control unit of the range hood controls the exhaust fan to rotate according to the control parameter of the cooking hob corresponding to the larger frequency modulation change data.

[0013] Further, the frequency modulation change data corresponding to the first cooking hob is H1, the frequency modulation change data corresponding to the second cooking hob is H2. The range of H1 is 1Hz - 3Hz, the range of H2 is also 1Hz - 3Hz, and H1 is less than H2.

[0014] Further, the range hood housing has an air suction port, which is symmetrically arranged left and right. From the air suction port, an air exhaust port provided in the range hood housing is communicated. A smoke exhaust duct is formed by communicating the air suction port and the air exhaust port. A smoke exhaust fan is also provided in the communicated smoke exhaust duct. The smoke exhaust fan has a centrifugal impeller and a volute provided outside it.

[0015] Further, the axis of the centrifugal air impeller is horizontally arranged or inclined with the front end lower and the rear end higher. The exhaust air blower has an air inlet, which is opposite to the side surface of the centrifugal air impeller. One side of the air inlet has a volute section, and the side corresponding to the volute section is a volute tongue section. The air inlet corresponding to the volute section has a large air intake, so the local negative pressure is relatively low, and most of the area of the volute section is located on one side of the center line of the range hood.

[0016] Further, the first burner is arranged corresponding to the area where most of the volute section is located on one side of the center line of the range hood, and the second burner is arranged corresponding to the area where most of the volute section is located on the other side of the center line of the range hood.

[0017] Further, the range hood is provided with a PM2.5 detection module electrically connected to the main control of the range hood. When the PM2.5 detection module detects that the oil fume concentration in the kitchen air is greater than a preset threshold value, the main control of the range hood increases the rotation speed of the exhaust air blower.

[0018] By improving and optimizing the control method of the range hood and stove linkage, the present invention can enable users to obtain the same cooking experience when cooking with any one of the burners of the stove, and by determining specific control parameters through experiments, the problem of poor cooking experience of users can be effectively avoided. Other advantages of the present invention will be described in the following description. Description of the Drawings

[0019] Figure 1 is the control structure block diagram corresponding to the control method of the range hood and stove linkage of the present invention;

[0020] Figure 2 is the longitudinal sectional view of the range hood of the present invention;

[0021] Figure 3 is the three-dimensional structure diagram of the range hood of the present invention.

[0022] Reference Numerals: 1, range hood housing; 2, smoke detection device; 3, exhaust air blower; 4, ventilation hole. Detailed Embodiments

[0023] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] The following is a further description in conjunction with the drawings and specific embodiments:

[0025] Embodiment 1

[0026] This embodiment provides an oil fume extractor and a cooker. An oil fume extractor, as Figure 2 and Figure 3 shown, the oil fume extractor includes a smoke machine housing 1, and the smoke machine housing 1 includes a back plate, a left side plate, a right side plate, a top plate, an air duct enclosing plate and a sealing plate. The back plate is arranged at the rear side of the top plate and extends from top to bottom. The left side plate and the right side plate are respectively arranged on the left and right sides of the top plate, extend from top to bottom, and are wider at the top and narrower at the bottom. The air duct enclosing plate is arranged at the upper end of the top plate, and the sealing plate is arranged at a position close to the upper end of the air duct enclosing plate. The top plate has a cavity, and a narrow and long air suction port is opened on the lower wall of the cavity. Its length direction is along the left and right direction, and the air suction ports are symmetrically arranged left and right. A ventilation port is arranged on the sealing plate, and a check valve is installed at the ventilation port. A smoke exhaust air duct is formed by connecting the air suction port and the ventilation port, and a smoke detection device 2 and a smoke exhaust fan 3 are arranged in the smoke exhaust air duct. The smoke exhaust fan 3 has a variable frequency motor, a centrifugal impeller and a volute arranged outside it. The variable frequency motor is connected to the centrifugal impeller, and the variable frequency motor is used to drive the centrifugal impeller to rotate, so as to form a negative pressure area and generate suction. The axis of the centrifugal impeller is Figure 2 shown as being inclined with the front end lower and the rear end higher, or being horizontally arranged. The smoke exhaust fan 3 has an air inlet, the air inlet is opposite to the side surface of the centrifugal impeller, and one side of the air inlet has a volute section, and the side corresponding to the volute section is a volute tongue section. The air suction volume of the air inlet corresponding to the volute section is large, so the local negative pressure is low, and most of the area of the volute section is located on one side of the center line of the oil fume extractor. A part of the frontmost part of the cavity of the top plate is an electrical component accommodation cavity, and an MUC chip of the smoke machine, that is, the main control of the smoke machine, is arranged in this electrical component accommodation cavity. The electrical component accommodation cavity also includes a separate cavity, in which a PM2.5 detection module, or a PM2.5 detection device, is arranged. A ventilation hole 4 is arranged on the cavity wall at the upper end of this separate cavity. The PM2.5 detection module has an air guiding device, which can introduce the outside air into this separate cavity through the ventilation hole 4. The PM2.5 detection module detects the PM2.5 of the air introduced into this separate cavity and transmits the detection result to the main control of the smoke machine.

[0027] A cooking appliance has two burners, one on the left and one on the right, which are the first burner and the second burner respectively, and the first burner and the second burner are symmetrically arranged left and right. The cooking appliance is arranged directly below the range hood. Most of the corresponding volute section of the first burner is located on one side of the center line of the range hood, and most of the corresponding volute section of the second burner is located on the other side of the center line of the range hood. The first burner and the second burner respectively have corresponding first temperature detection devices and second temperature detection devices, and the first temperature detection device and the second temperature detection device are respectively used to detect the temperatures of the first burner and the second burner. The cooking appliance also has a cooking appliance main control, and the cooking appliance main control can be a MUC chip. The first temperature detection device and the second temperature detection device are both electrically connected to the cooking appliance main control and transmit their detection results to the cooking appliance main control.

[0028] As Figure 1 shown, the electrical and communication connection relationships between the electrical components of the range hood, between the electrical components of the cooking appliance, and between the range hood and the cooking appliance are given. The variable frequency motor of the exhaust fan 3, the PM2.5 detection module, and the smoke detection device 2 are all electrically connected to the range hood main control. The exhaust fan 3 sucks the cooking fumes generated during cooking from the air inlet of the range hood housing 1 into the exhaust air duct and discharges them from the air outlet. The smoke detection device 2 is used to detect the concentration of the fumes inhaled into the exhaust air duct and transmits the detection result to the range hood main control. The PM2.5 detection module is used to detect the PM2.5 value of the outside air and transmits the detection result to the range hood main control. A PM2.5 threshold is set in the range hood main control. When the detection result transmitted by the PM2.5 detection module reaches or is greater than the PM2.5 threshold set in the range hood main control, it indicates that there is fume escape and corresponding measures need to be taken, such as the range hood main control increasing the speed of the exhaust fan 3; for a range hood with an air curtain, the range hood main control can also control the air curtain motor to increase the speed and improve the blocking ability of the air curtain. The first temperature detection device and the second temperature detection device corresponding to the first burner and the second burner of the cooking appliance are both electrically connected to the cooking appliance main control and transmit their detection results to the cooking appliance main control. The cooking appliance main control is communicatively connected to the range hood main control, and the communication connection methods include Bluetooth connection, WiFi connection, etc.

[0029] The main control unit of the range hood receives the status signals from the main control unit of the cooktop. The status signals include the first temperature signal and the second temperature signal detected by the first temperature detection device and the second temperature detection device respectively. A threshold temperature is set inside the main control unit of the range hood. The main control unit of the range hood will compare the received first temperature signal and second temperature signal with the threshold temperature to determine which burner is in use for cooking. For example, when the first temperature signal reaches or exceeds the threshold temperature, it is the first burner that is in use for cooking; when the second temperature signal reaches or exceeds the threshold temperature, it is the second burner that is in use for cooking; when both the first temperature signal and the second temperature signal reach or exceed the threshold temperature, both burners are in use for cooking. Or a threshold temperature is set inside the main control unit of the cooktop. The first temperature detection device and the second temperature detection device transmit the detected first temperature signal and second temperature signal to the main control unit of the cooktop. The main control unit of the cooktop compares the received first temperature signal and second temperature signal with the threshold temperature set inside it to determine which burner is in use for cooking, and transmits the information of the burner in use for cooking to the main control unit of the range hood.

[0030] Two smoke detection thresholds corresponding to the two burners respectively are set inside the main control unit of the range hood. The two smoke detection thresholds are the first smoke detection threshold and the second smoke detection threshold respectively. The first burner corresponds to the first smoke detection threshold, and the second burner corresponds to the second smoke detection threshold. The first smoke detection threshold is greater than the second smoke detection threshold, and the second smoke detection threshold is only 10 - 50% of the first smoke detection threshold. Specifically, the second smoke detection threshold can be 10%, 14.8%, 17.5%, 25%, 33.6%, 44.6%, 50% etc. of the first smoke detection threshold. The specific ratio between the two should be determined through multiple cooking experiments according to the oil fume concentration data detected by the smoke detection device 2 when different burners are cooking alone. In addition, only one smoke detection threshold can be set inside the main control unit of the range hood, and the specific situation needs to be determined according to the smoke-cooktop linkage control method proposed in the subsequent embodiments.

[0031] Control parameters corresponding to the two burners respectively are set inside the main control unit of the range hood. The control parameters include the parameters for controlling the rotation speed of the variable-frequency motor. Specifically, they include the frequency modulation change data of the variable-frequency motor. The frequency modulation change data corresponding to the first burner is H1, and the frequency modulation change data corresponding to the second burner is H2. H1 and H2 can be the same or different. The specific situation and their specific magnitudes need to be determined according to the smoke-cooktop linkage control method proposed in the subsequent embodiments.

[0032] Embodiment 2

[0033] This embodiment provides a first smoke-cooktop linkage control method, which includes the following steps:

[0034] S1: The main controller of the cooking appliance detects the temperatures of two burners through two temperature detection devices. When the temperature of any one of the burners exceeds the threshold temperature, the main controller of the cooking appliance sends control information indicating that the temperature of this burner exceeds the threshold to the main controller of the range hood.

[0035] S2: The main controller of the range hood reads the control parameters corresponding to this burner according to this control information. The control parameters include parameters for controlling the rotation speed of the variable-frequency motor, such as the frequency modulation change data of the variable-frequency motor. The frequency modulation change data corresponding to the first burner is H1, and the frequency modulation change data corresponding to the second burner is H2. The magnitudes of H1 and H2 are different, and H1 is less than H2. The range of H1 is 1 Hz - 2 Hz, specifically it can be 1 Hz, 1.2 Hz, 1.4 Hz, 1.5 Hz, 1.75 Hz, 1.9 Hz, 2 Hz, etc. The range of H2 is 2 Hz - 4 Hz, specifically it can be 2 Hz, 2.3 Hz, 2.65 Hz, 2.9 Hz, 3.3 Hz, 3.75 Hz, 4 Hz, etc.

[0036] S3: The main controller of the range hood reads the detection value of the smoke sensor detection device 2. When this detection value exceeds the smoke sensor threshold set inside the main controller of the range hood, the main controller of the range hood controls the exhaust fan 3 to rotate according to the read control parameters.

[0037] S4: When the PM2.5 detection module detects that the oil fume concentration in the kitchen air is greater than the preset threshold, the main controller of the range hood further increases the rotation speed of the exhaust fan 3.

[0038] In this method, only one smoke sensor threshold can be set inside the main controller of the range hood. When cooking with the first burner and the second burner, under the same oil fume conditions, the time for the detection value of the smoke sensor detection device 2 to reach the smoke sensor threshold may be different. For example, when cooking with the first burner alone, the detection value of the smoke sensor detection device 2 reaches the smoke sensor threshold after 10 seconds, but when cooking with the second burner alone, it takes 12 seconds for the detection value of the smoke sensor detection device 2 to reach the smoke sensor threshold. In order to make the rotation speed of the exhaust fan 3 increase from medium speed to high speed, when cooking with the first burner, the main controller of the range hood controls the speed regulation of the variable-frequency motor through H1, and when cooking with the second burner, the main controller of the range hood controls the speed regulation of the variable-frequency motor through H2. Since H2 is greater than H1, by reasonably setting the magnitudes of H2 and H1, it can be achieved that no matter which burner is used for cooking alone, the time for the rotation speed of the exhaust fan 3 to increase from medium speed to high speed is the same. The specific values of H1 and H2 need to be determined through a large number of experiments and input into the main controller of the range hood.

[0039] In addition, when it is detected that the temperature of the first cooking hob exceeds the threshold temperature and then it is found that the temperature of the second cooking hob also exceeds the threshold temperature, or when it is detected that the temperature of the second cooking hob exceeds the threshold temperature and then it is found that the temperature of the first cooking hob also exceeds the threshold temperature, the main control unit of the range hood controls the rotation of the exhaust fan 3 according to the frequency modulation change data H2 to more quickly increase the rotation speed of the exhaust fan 3 and improve the oil fume removal effect more quickly.

[0040] Embodiment 3

[0041] This embodiment provides a second method for controlling the linkage between the range hood and the cooking hob. Two smoke detection thresholds corresponding to the two cooking hobs are set inside the main control unit of the range hood, and the magnitudes of these two smoke detection thresholds are different.

[0042] The method for controlling the linkage between the range hood and the cooking hob includes the following steps:

[0043] S1: The main control unit of the range hood receives the status signal from the main control unit of the cooking appliance. The status signal includes the temperature signals of the two cooking hobs detected by the two temperature detection devices.

[0044] S2: When the main control unit of the range hood detects that the temperature of any one of the cooking hobs exceeds the threshold temperature, it reads the control parameters corresponding to that cooking hob. The control parameters include the parameters for controlling the rotation speed of the variable-frequency motor, such as the frequency modulation change data of the variable-frequency motor. The frequency modulation change data corresponding to the first cooking hob is H1, and the frequency modulation change data corresponding to the second cooking hob is H2. At this time, H1 and H2 are the same, but of course they can also be different. In this embodiment, the ranges of H1 and H2 are both between 1 Hz and 3 Hz.

[0045] S3: The main control unit of the range hood reads the detection value of the smoke detection device 2 and compares it with the smoke detection threshold corresponding to the cooking hob for which the control parameters are read. When the detection value exceeds the corresponding smoke detection threshold, the main control unit of the range hood controls the rotation of the exhaust fan 3 according to the read control parameters.

[0046] S4: When the PM2.5 detection module detects that the oil fume concentration in the kitchen air is greater than the preset threshold, the main control unit of the range hood continues to increase the rotation speed of the exhaust fan 3.

[0047] In this method, two smoke detection thresholds can be set inside the main control of the range hood. When cooking with the first burner and the second burner, under the same oil fume conditions, the time for the detection value of the smoke detection device 2 to reach the same concentration value may be different. For example, when cooking with the first burner alone, it takes 10 seconds to reach a concentration of 3000 mg / m³, and when cooking with the second burner alone, it takes 15 seconds to reach a concentration of 3000 mg / m³. However, when cooking with the second burner alone, it also takes 10 seconds to reach a concentration of 500 mg / m³. Then we can set the first smoke detection threshold to 3000 mg / m³ and the second smoke detection threshold to 500 mg / m³. In this way, when H2 is equal to H1, regardless of which burner is used for cooking alone, the time for the speed of the exhaust fan 3 to increase from medium speed to high speed is the same.

[0048] In addition, in some exemplary embodiments, the main control of the range hood is provided with a first smoke detection threshold and a second smoke detection threshold corresponding to the two burners respectively, and the first smoke detection threshold is greater than the second smoke detection threshold. When cooking with any one of the burners alone, the time to reach the corresponding smoke detection threshold is also different. Compared with cooking with the second burner alone, cooking with the first burner alone can reach the smoke detection threshold faster. In this case, in order to make the time for the speed of the exhaust fan 3 to increase from medium speed to high speed the same, it is necessary to balance with different frequency modulation change data H1 and frequency modulation change data H2. At this time, H1 is less than H2. The specific values of H1 and H2 need to be determined through a large number of experiments and input into the main control of the range hood. At this time, when it is detected that the temperature of the first burner exceeds the threshold temperature and then it is found that the temperature of the second burner also exceeds the threshold temperature, or when it is detected that the temperature of the second burner exceeds the threshold temperature and then it is found that the temperature of the first burner also exceeds the threshold temperature, the operation is carried out according to the frequency modulation change data H2 and the first smoke detection threshold is adopted to increase the speed of the exhaust fan 3 faster and improve the oil fume removal effect faster.

[0049] In summary, by improving and optimizing the control method of the range hood and stove linkage, the present invention enables users to obtain the same cooking experience when cooking with any one of the burners of the stove, and by determining the specific control parameters through experiments, the problem of poor user cooking experience can be effectively avoided.

[0050] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for interlocking control of a range hood and a stove, wherein the main controller of the stove is communicatively connected to the main controller of the range hood, and is characterized in that: The range hood includes a range hood housing, a smoke exhaust duct is formed in the range hood housing, a smoke detection device and a smoke exhaust fan are arranged in the smoke exhaust duct, the motor driving the smoke exhaust fan to rotate is a variable-frequency motor, and the stove has at least two burners each including a temperature detection device; two smoke detection thresholds corresponding to the two burners respectively are arranged inside the main controller of the range hood, and the magnitudes of the two smoke detection thresholds are different; It includes the following steps: S1: The main controller of the range hood receives a status signal from the main controller of the stove, and the status signal includes temperature signals of the two burners detected by the two temperature detection devices; S2: When the main controller of the range hood receives that the temperature of any burner exceeds the threshold temperature, it reads the control parameter corresponding to that burner; S3: The main controller of the range hood reads the detection value of the smoke detection device, and compares it with the smoke detection threshold corresponding to the burner whose control parameter is read. When the detection value exceeds the corresponding smoke detection threshold, the main controller of the range hood controls the smoke exhaust fan to rotate according to the read control parameter.

2. The method for interlocking control of a range hood and a stove according to claim 1, wherein the two burners are a first burner and a second burner respectively, the two smoke detection thresholds are a first smoke detection threshold and a second smoke detection threshold respectively, the first burner corresponds to the first smoke detection threshold, the second burner corresponds to the second smoke detection threshold, the first smoke detection threshold is greater than the second smoke detection threshold, and the second smoke detection threshold is only 10-50% of the first smoke detection threshold.

3. The method for interlocking control of a range hood and a stove according to claim 2, wherein after detecting that the temperature of the first burner exceeds the threshold temperature, it is found that the temperature of the second burner also exceeds the threshold temperature, or after detecting that the temperature of the second burner exceeds the threshold temperature, it is found that the temperature of the first burner also exceeds the threshold temperature, the main controller of the range hood reads the detection value of the smoke detection device and compares it with the second smoke detection threshold corresponding to the second burner.

4. The method for interlocking control of a range hood and a stove according to claim 3, wherein the control parameter corresponding to the first burner is different from the control parameter corresponding to the second burner. When the main controller of the range hood determines that the detection value of the smoke detection device it reads exceeds the second smoke detection threshold, the main controller of the range hood controls the smoke exhaust fan to rotate according to the control parameter of any one of the burners read.

5. The method for interlocking control of a range hood and a stove according to claim 3, wherein the control parameter corresponding to the first burner is different from the control parameter corresponding to the second burner, the control parameter includes frequency modulation change data of the variable-frequency motor, and the magnitudes of the frequency modulation change data corresponding to the first burner and the second burner are different; when the main controller of the range hood determines that the detection value of the smoke detection device it reads exceeds the second smoke detection threshold, the main controller of the range hood controls the smoke exhaust fan to rotate according to the control parameter of the burner corresponding to the larger frequency modulation change data.

6. The method for interlocking control of a range hood and a stove according to claim 5, wherein The FM change data corresponding to the first burner is H1, and the FM change data corresponding to the first burner is H2. The range of H1 is 1 Hz - 3 Hz, and the range of H2 is also 1 Hz - 3 Hz, and H1 is less than H2.

7. A smoke range hood interlock control method according to claim 2, characterized in that The hood housing of the range hood has an air suction port, which is symmetrically arranged left and right. A discharge port is communicated with the air suction port in the hood housing. A smoke exhaust duct is formed by communicating the air suction port with the discharge port. A smoke exhaust fan is also arranged to communicate with the smoke exhaust duct. The smoke exhaust fan has a centrifugal impeller and a volute arranged outside it.

8. A smoke range hood interlock control method according to claim 7, characterized in that The shaft of the centrifugal impeller is arranged horizontally or inclined with the front end lower and the rear end higher. The smoke exhaust fan has an air inlet, and the air inlet is opposite to the side surface of the centrifugal impeller. One side of the air inlet has a volute section, and the side corresponding to the volute section is a volute tongue section; the air inlet corresponding to the volute section has a large air intake, so the local negative pressure is relatively low, and most of the area of the volute section is located on one side of the center line of the range hood.

9. A smoke range hood interlock control method according to claim 8, characterized in that The first burner is arranged corresponding to most of the area of the volute section located on one side of the center line of the range hood, and the second burner is arranged corresponding to most of the area of the volute section located on the other side of the center line of the range hood.

10. A smoke range hood interlock control method according to any one of claims 1 - 9, characterized in that The range hood has a PM2.5 detection module electrically connected to the main control of the range hood. When the PM2.5 detection module detects that the oil fume concentration in the kitchen air is greater than a preset threshold, the main control of the range hood increases the speed of the smoke exhaust fan.

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