Gas stove and control method thereof

Abstract

The invention belongs to the technical field of gas stoves, and provides a gas stove and a control method thereof.The gas stove comprises a control module, a gas flow collecting module and a connecting module, the gas flow collecting module is arranged on a gas inlet pipeline of the gas stove, the gas stove comprises a burner, and a K-type thermocouple is arranged on the burner; the control module dynamically controls the connecting module to send an adjusting instruction to adjust the smoke suction speed of the range hood; according to the gas stove, sufficient combustion can be guaranteed, exhaust gas can be reduced to take away heat, the linked gas can generate matched flames, the appropriate fuel-air ratio is generated, the heat efficiency of the stove is improved, waste of the gas of the gas stove is directly reduced, the gas is saved, surge of a range hood is avoided, and oil smoke gas pressure difference imbalance is reduced; the problem of lampblack backflow is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of gas stoves, and in particular relates to a gas stove and a control method thereof. Background Art

[0002] Traditional gas stoves and range hoods are two independent kitchen appliances, and users need to control them separately before each use. If you encounter dishes with a large amount of smoke, the range hood often does not have time to adjust the wind power. The best way to solve this problem is to make the range hood and stove realize intelligent linkage, that is, "wind follows fire". In most "wind follows fire" technical solutions, potentiometers are usually used to monitor the switch status and fire power adjustment of the stove. When the gas stove is turned on, the range hood will automatically start and adjust the wind speed according to the size of the fire, so as to more effectively absorb the generated oil smoke and keep the kitchen air fresh. Through the linkage system, the operating status of the range hood can be adjusted in time when abnormal conditions (such as open flames, excessive temperatures, etc.) are detected to reduce the risk of fire. Intelligent regulation can optimize the working time and power of the range hood, help reduce energy consumption, while reducing noise pollution and improving user experience.

[0003] In addition, the wind-follows-fire technology intelligently controls the wind speed and automatically adjusts the exhaust volume of the range hood according to the size of the fire. The perfect exhaust volume will make the fuel-air ratio sufficient, which can not only ensure sufficient combustion, but also reduce the heat carried away by the exhaust, thereby improving the thermal efficiency of the stove, thereby optimizing combustion efficiency and reducing gas waste. This intelligent control not only improves cooking efficiency, but also effectively saves gas. Summary of the invention

[0004] The purpose of the present invention is to provide a gas stove and a control method thereof to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] In order to achieve the above object, according to one aspect of the present invention, a gas stove is provided, comprising: A control module, a gas flow collection module and a connection module, wherein the gas flow collection module is arranged on the air inlet pipe of the gas stove, the gas stove comprises a burner, and a K-type thermocouple is arranged on the burner; the control module is electrically connected to the gas flow collection module, the K-type thermocouple and the connection module respectively; The gas flow acquisition module is used to collect gas flow information in the corresponding air intake pipe and send it to the control module; the control module sends a control signal to control the range hood through the connection module; the connection module is used to connect to the range hood and send a control signal; the control signal includes a start signal, a shutdown signal, and an adjustment signal; the range hood starts and shuts down after receiving the start signal and the shutdown signal, and adjusts the smoking speed of the range hood according to the adjustment instruction included in the adjustment signal after receiving the adjustment signal; Among them, the K-type thermocouple is used to collect the temperature value information of the furnace head and send it to the control module.

[0006] The adjustment instruction includes the ratio of the adjustment multiple of the range hood speed, the adjustment speed and the adjustment time length; Among them, the control module dynamically adjusts the suction speed of the range hood through the connection module according to the gas flow information and the temperature value information.

[0007] The gas flow acquisition module includes any one of a turbine flowmeter, a vortex flowmeter, and an ultrasonic flowmeter.

[0008] Among them, the range hood starts up after receiving the start signal and runs in any one of the low speed mode, medium speed mode and high speed mode.

[0009] Among them, the speed corresponding to the low-speed mode is 600-700r / min, the speed corresponding to the medium-speed mode is 700-1000r / min, and the speed corresponding to the high-speed mode is above 1000r / min.

[0010] When the gas stove is started, the control module sends a start signal through the connection module to control the range hood to turn on; When the gas stove is turned off, the control module sends a closing signal through the connection module to control the range hood to turn off.

[0011] Wherein, the range hood comprises a fan speed regulating circuit, and the fan speed regulating circuit is respectively connected to the connection module and the fan of the range hood to adjust the speed of the fan of the range hood according to the control signal received by the connection module; Since the wind and fire are linked, when the gas stove adjusts the firepower, the linked range hood will correspondingly suddenly switch from a low speed to a high speed. However, a large speed difference means that the heat taken away by the gas stove by the exhaust gas will be increased, which reduces the thermal efficiency of the stove and directly leads to the waste of gas of the gas stove. In order to make the fuel-air ratio sufficient, both to ensure sufficient combustion and to reduce the heat taken away by the exhaust gas, the present application provides the following method for adjusting the smoking speed of the range hood so that the linked gas produces a matching flame and produces a just right fuel-air ratio. The present application provides the following method: The specific method for dynamically adjusting the smoke extraction speed of the range hood is as follows: After the range hood is started, the smooth gas reference period is monitored according to the temperature value, including: After the range hood is started, the temperature value of the burner is collected once every T through a K-type thermocouple; the temperature value collected before the most recently collected temperature value CD is C1, and the temperature value collected before C1 is C2. If C1 is less than C2 and less than CD, the collection time of C1 is used as the settlement time; each temperature value is compared in reverse order of the collection time from the settlement time. If a temperature value is less than the previous temperature value of the temperature value and less than the next temperature value of the temperature value, the collection time of the temperature value is marked as the starting time; the time period between the starting time and the settlement time is the smoothing gas reference period.

[0012] When a new smooth gas reference period is detected, the connection module sends an adjustment instruction to adjust the smoke extraction speed of the range hood within the duration of the smooth gas reference period.

[0013] Among them, T is set to 200 milliseconds to 8000 milliseconds.

[0014] Among them, the smooth gas reference time period obtained by the above method is based on the two relatively low temperature values ​​that have recently appeared behind the range hood. At these two moments, the wind follows the movement of the fire or the exhaust takes away more heat, resulting in insufficient material-air ratio, so the temperature value will appear relatively low. Although the above-mentioned smooth gas reference time period is the most recent time period when gas supply and combustion are relatively smooth, the smooth gas reference time period is the most recent time period when the gas stove has a just right fuel-air ratio. However, when the gas stove adjusts the firepower to a large extent, the range hood linked thereto will correspondingly suddenly switch from a high speed to a low speed, and the airflow speed inside it will be unstable, and separation may occur on the blades of the fan or turbine, or the airflow entering the range hood may be disturbed, thereby causing surge phenomenon, causing the oil fume gas pressure difference inside it to be out of balance, especially at low speed, small surge is more likely to occur, and the oil fume reflux problem will inevitably occur. The surge caused causes the insurance mechanism inside the range hood to increase the speed of the fan or turbine blades to reduce the surge, but increasing the speed means that the heat taken away by the exhaust gas from the gas stove will be increased, so that the thermal efficiency of the stove will be reduced, which will directly lead to the waste of gas of the gas stove. In the low speed state, the temperature change of the gas stove during the small surge period is small, resulting in the inability to monitor it during the smooth gas reference period. The present invention proposes the following method for monitoring the smooth gas reference period: Preferably, after the range hood is started, the smoothing gas reference period is monitored according to the temperature value, specifically including: After the range hood is started, the temperature value of the burner is collected once every T interval through a K-type thermocouple; the mean of all collected temperature values ​​is recorded as JTmp1, and all temperature values ​​less than JTmp1 are taken to form a sequence recorded as a low-temperature sequence; (the temperature value in the low-temperature sequence is less than the overall mean, so it is very likely to be the temperature value corresponding to a small surge at a low speed. Although the temperature value in the low-temperature sequence changes little, it filters out the temperature value with large fluctuations, so it is relatively stable and has a linear law that is easy to monitor); according to the time sequence of collection, the time intervals between each temperature value in the low-temperature sequence are taken to form a sequence recorded as a linear interval sequence; Calculate the most recent start time, the specific method is: The mean of all temperature values ​​in the low temperature series is taken as JTmp2; The acquisition time corresponding to the first temperature value less than JTmp2 after the range hood is started is recorded as the surge start time; The surge amplification ratio corresponding to each time interval in the linear interval sequence is calculated in sequence; Each time interval in the linear interval sequence is multiplied by the surge amplification ratio corresponding to each time interval to obtain each amplified time interval; the average value of all amplified time intervals is recorded as the surge duration; The latest start time is the time after the surge duration time has passed since the surge start time.

[0015] The acquisition time of the temperature value less than JTmp2 closest to the current time in the low temperature sequence is taken as the latest end time, and the time period from the latest start time to the latest end time is taken as the smoothing gas reference period.

[0016] Among them, the calculation method of calculating the corresponding surge amplification ratio of each time interval in the linear interval sequence in sequence is as follows: the average of each interval time in the linear interval sequence is recorded as the linear interval average; the time interval for which the corresponding surge amplification ratio is to be calculated in the linear interval sequence is taken as the current time interval, and each temperature value in the current time interval is selected in the low temperature sequence to form a sequence recorded as forming the current temperature sequence; the minimum value in the current temperature sequence is marked as Temp1; in the current temperature sequence, judgments are made in sequence starting from the position of Temp1: if the temperature value is less than the linear interval average for the first time, the temperature value is recorded as Temp2; the interval length of the acquisition time from Temp1 to Temp2 is taken as the surge duration corresponding to the current time interval; then the surge amplification ratio corresponding to the current time interval is the ratio of the surge duration corresponding to the current time interval to the linear interval average.

[0017] Furthermore, the method for adjusting the smoke extraction speed of the range hood within the duration of the smooth gas reference period specifically includes: The time corresponding to the maximum flow value collected by the gas flow collection module from the time when the range hood is started to the current time is taken as the adjustment inflection point time TrunT; Mark all flow values ​​collected from the time TrunT during the smooth gas reference period that are less than the most recently collected flow value as smooth valley flow; The value with the smallest difference between all smoothed valley flow values ​​and the most recently collected flow value is recorded as the nearest valley flow value, and the difference between the most recently collected flow value and the nearest valley flow value is calculated as the valley gap; Mark all flow values ​​collected from the time TrunT during the smooth gas reference period that are greater than the most recently collected flow value as smoothed peak flow; The value with the smallest difference between all smoothed peak flows and the most recently collected flow value is recorded as the approximate peak flow, and the difference between the approximate peak flow and the most recently collected flow value is calculated as the peak gap Peakgap; When Vallygap < Peakgap, the current range hood suction speed is reduced within the duration of a smooth gas reference period; (at this time, since the suction speed of the range hood is linked to the wind-following-fire movement of the linked gas stove, it will suddenly switch from a low speed to a high speed. The large speed difference means that the heat taken away by the exhaust gas to the gas stove will increase, which will reduce the thermal efficiency of the stove. Therefore, it is necessary to reduce the current suction speed of the range hood to reduce the heat taken away by the exhaust gas to the gas stove, improve the thermal efficiency of the stove, and directly reduce the waste of gas of the gas stove); When Vallygap>Peakgap, the current range hood suction speed is increased within the duration of a smooth gas reference period; (at this time, since the suction speed of the range hood is linked to the wind-following-fire movement of the linked gas stove, it will suddenly switch from a high speed to a low speed, resulting in unstable airflow speed inside it, which may separate on the blades of the fan or turbine, or the airflow entering the range hood may be disturbed, thereby causing surge, causing the oil fume gas pressure difference inside the range hood to be imbalanced, especially under the state of sharply reduced speed, small surges are more likely to occur, which will inevitably lead to the problem of oil fume reflux, so it is necessary to increase the suction speed of the range hood to avoid surge of the range hood, reduce the imbalance of oil fume gas pressure difference, and avoid the problem of oil fume reflux); When Vallygap is equal to Peakgap, the current range hood's exhaust speed remains unchanged.

[0018] Among them, the valley value gap and the peak value gap are respectively the gaps between the larger and smaller extreme flow values ​​and the current value within the duration of the smoothed gas reference period after the adjustment inflection point moment TrunT of the range hood after the gas stove is adjusted. The comparison between these two gap values ​​can accurately indicate the changing tendency of the range hood's smoking speed under large speed changes that are difficult to monitor.

[0019] Preferably, the method for reducing the smoking speed of the current range hood within the duration of a smooth gas reference period is: reducing the rotation speed of the current range hood by 100-300 r / min within the duration of a smooth gas reference period.

[0020] Preferably, the method for increasing the smoking speed of the current range hood within the duration of a smooth gas reference period is: increasing the rotation speed of the current range hood by 100-300 r / min within the duration of a smooth gas reference period.

[0021] Preferably, the method for reducing the current range hood smoking speed within the duration of a smooth gas reference period is: reducing the current range hood rotation speed by 15-30% within the duration of a smooth gas reference period.

[0022] Preferably, the method for increasing the smoking speed of the current range hood within the duration of a smooth gas reference period is: increasing the rotation speed of the current range hood by 15-30% within the duration of a smooth gas reference period.

[0023] According to another aspect of the disclosed embodiment of the present invention, a gas stove control method is provided, which is applied to the above-mentioned gas stove, and the method includes: Obtain the gas flow information collected by the gas flow collection module; Get the temperature value information of the furnace head collected by the K-type thermocouple; The control module dynamically adjusts the smoke extraction speed of the range hood through the connection module according to the gas flow information and the temperature value information.

[0024] The beneficial effects of the present invention are as follows: the present invention provides a gas stove and a control method thereof, so that the fuel-air ratio is sufficient, which can not only ensure sufficient combustion, but also reduce the heat taken away by exhaust gas, so that the linked gases produce matching flames, and produce a just right fuel-air ratio, thereby improving the thermal efficiency of the stove, directly reducing the waste of gas in the gas stove, saving gas, avoiding surging of the range hood, reducing the imbalance of the oil fume gas pressure difference, and avoiding the problem of oil fume reflux. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other features of the present invention will become more obvious by describing in detail the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings of the present invention represent the same or similar elements. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings: Figure 1 Shown is a flow chart of a gas stove control method. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0027] Example 1 According to one aspect of the disclosed embodiment of the present invention, a gas stove is provided, comprising: A control module, a gas flow collection module and a connection module, wherein the gas flow collection module is arranged on the air inlet pipe of the gas stove, the gas stove comprises a burner, and a K-type thermocouple is arranged on the burner; the control module is electrically connected to the gas flow collection module, the K-type thermocouple and the connection module respectively; The gas flow acquisition module is used to collect gas flow information in the corresponding air intake pipe and send it to the control module; the control module sends a control signal to control the range hood through the connection module; the connection module is used to connect to the range hood and send a control signal; the control signal includes a start signal, a shutdown signal, and an adjustment signal; the range hood starts and shuts down after receiving the start signal and the shutdown signal, and adjusts the smoking speed of the range hood according to the adjustment instruction included in the adjustment signal after receiving the adjustment signal; Among them, the K-type thermocouple is used to collect the temperature value information of the furnace head and send it to the control module.

[0028] The adjustment instruction includes the ratio of the adjustment multiple of the range hood speed, the adjustment speed and the adjustment time length; Among them, the control module dynamically adjusts the suction speed of the range hood through the connection module according to the gas flow information and the temperature value information.

[0029] Among them, the K-type thermocouple is used to collect the temperature value information of the furnace head and send it to the control module.

[0030] The control module is a Toshiba TMPM037 microcontroller and peripheral circuits based on the ARM Cortex-M0 core. The peripheral circuits of the Toshiba TMPM037 microcontroller include a clock circuit, a reset circuit, a simulation circuit, an external interface circuit, and a power conversion circuit.

[0031] Among them, the clock circuit provides the working clock for the Toshiba TMPM037 microcontroller; the reset circuit provides the reset signal, and the instrument is reset when the reset button is pressed; the simulation circuit is connected to the Toshiba TMPM037 microcontroller, connected to the PC through the USB port, and connected to the Toshiba TMPM037 microcontroller through the RS232 serial port, which is used for downloading and debugging C language programs; Among them, the connection module is the EMW3081 embedded WiFi module, which is a cost-effective embedded Wi-Fi module launched by Shanghai Qingke Information Technology Co., Ltd.

[0032] The connection module communicates with TMPM037 via the serial port URAT.

[0033] Among them, the connection module establishes a TCP connection and acts as a server, building a network in AT command mode.

[0034] Among them, the gas flow collection module is a turbine flow meter.

[0035] Among them, the range hood starts up after receiving the start signal and runs in medium speed mode.

[0036] Among them, the speed corresponding to the medium speed mode is 700r / min.

[0037] When the gas stove is started, the control module sends a start signal through the connection module to control the range hood to turn on; When the gas stove is turned off, the control module sends a shutdown signal through the connection module to control the range hood to turn off; The specific method for dynamically adjusting the smoke extraction speed of the range hood is as follows: After the range hood is started, the smooth gas reference period is monitored according to the temperature value, including: After the range hood is started, the temperature value of the burner is collected once every T through a K-type thermocouple; the temperature value collected before the most recently collected temperature value CD is C1, and the temperature value collected before C1 is C2. If C1 is less than C2 and less than CD, the collection time of C1 is used as the settlement time; each temperature value is compared in reverse order of the collection time from the settlement time. If a temperature value is less than the previous temperature value of the temperature value and less than the next temperature value of the temperature value, the collection time of the temperature value is marked as the starting time; the time period between the starting time and the settlement time is the smoothing gas reference period.

[0038] The key source code of the C language description of the specific method for dynamically adjusting the smoke extraction speed of the range hood is as follows: / / Simulate temperature reading function void collect_temperature(float temp) { readings[reading_count].timestamp = time(NULL); / / Current time readings[reading_count].temperature = temp; reading_count++;} / / Determine whether the conditions are met and find the settlement time and starting time int C1_index = reading_count - 2; / / The value before the most recent acquisition int C2_index = reading_count - 3; / / The previous acquisition float CD = readings[C1_index].temperature; float C1 = readings[C1_index].temperature; float C2 = readings[C2_index].temperature; if (C1 <C2&&C1<CD) { time_t settlement_time = readings[C1_index].timestamp; printf("settlement time: %s", ctime(&settlement_time)); for (int i = C1_index + 1; i <reading_count; i++) { if (readings[i-1].temperature>readings[i].temperature&& (i+1<reading_count ? readings[i+1].temperature> readings[i].temperature : 1)) { time_t start_time = readings[i].timestamp; return;}}}}}.

[0039] When a new smooth gas reference period is detected, the connection module sends an adjustment instruction to adjust the smoke extraction speed of the range hood within the duration of the smooth gas reference period.

[0040] Among them, T is set to 800 milliseconds.

[0041] Furthermore, the method for adjusting the smoke extraction speed of the range hood within the duration of the smooth gas reference period specifically includes: The time corresponding to the maximum flow value collected by the gas flow collection module from the time when the range hood is started to the current time is taken as the adjustment inflection point time TrunT; Mark all flow values ​​collected from the time TrunT during the smooth gas reference period that are less than the most recently collected flow value as smooth valley flow; The value with the smallest difference between all smoothed valley flow values ​​and the most recently collected flow value is recorded as the nearest valley flow value, and the difference between the most recently collected flow value and the nearest valley flow value is calculated as the valley gap; Mark all flow values ​​collected from the time TrunT during the smooth gas reference period that are greater than the most recently collected flow value as smoothed peak flow; The value with the smallest difference between all smoothed peak flows and the most recently collected flow value is recorded as the approximate peak flow, and the difference between the approximate peak flow and the most recently collected flow value is calculated as the peak gap Peakgap; When Vallygap < Peakgap, the current range hood suction speed is reduced within the duration of a smooth gas reference period; (at this time, since the suction speed of the range hood is linked to the wind-following-fire movement of the linked gas stove, it will suddenly switch from a low speed to a high speed. The large speed difference means that the heat taken away by the exhaust gas to the gas stove will increase, which will reduce the thermal efficiency of the stove. Therefore, it is necessary to reduce the current suction speed of the range hood to reduce the heat taken away by the exhaust gas to the gas stove, improve the thermal efficiency of the stove, and directly reduce the waste of gas of the gas stove); When Vallygap>Peakgap, the current range hood suction speed is increased within the duration of a smooth gas reference period; (at this time, since the suction speed of the range hood is linked to the wind-following-fire movement of the linked gas stove, it will suddenly switch from a high speed to a low speed, resulting in unstable airflow speed inside it, which may separate on the blades of the fan or turbine, or the airflow entering the range hood may be disturbed, thereby causing surge, causing the oil fume gas pressure difference inside the range hood to be imbalanced, especially under the state of sharply reduced speed, small surges are more likely to occur, which will inevitably lead to the problem of oil fume reflux, so it is necessary to increase the suction speed of the range hood to avoid surge of the range hood, reduce the imbalance of oil fume gas pressure difference, and avoid the problem of oil fume reflux); When Vallygap is equal to Peakgap, the current range hood exhaust speed is kept unchanged.

[0042] Among them, the key source code of the C language description of the specific implementation of the specific method of adjusting the smoking speed of the range hood within the duration of the smooth gas reference period is: / / Function: Calculate the minimum difference and corresponding flow void calculate_flow_values(float last_flow_value, time_t TrunT, intsmooth_duration) { float valley_values[MAX_READINGS]; float peak_values[MAX_READINGS]; int valley_count = 0; int peak_count = 0; / / Step 1: Filter and smooth valley flow and peak flow for (int i = 0; i <flow_count; i++) { if (difftime(flow_readings[i].timestamp, TrunT)<= smooth_duration) { if (flow_readings[i].flow_rate <last_flow_value) { valley_values[valley_count++] = flow_readings[i].flow_rate; } else if (flow_readings[i].flow_rate>last_flow_value) { peak_values[peak_count++] = flow_readings[i].flow_rate; }}} / / Step 2: Find the valley flow and its gap float closest_valley_value = -1.0f; float min_valley_gap = FLT_MAX; for (int j = 0; j <valley_count; j++) { float gap = last_flow_value - valley_values[j]; if (gap>= 0&&gap <min_valley_gap) { min_valley_gap = gap; closest_valley_value = valley_values[j]; } } float Vallygap = closest_valley_value>= 0 ? last_flow_value -closest_valley_value : FLT_MAX; / / Step 3: Find the peak flow and its gap Peakgap float closest_peak_value = -1.0f; float min_peak_gap = FLT_MAX; for (int j = 0; j <peak_count; j++) { float gap = peak_values[j] - last_flow_value; if (gap>= 0&&gap <min_peak_gap) { min_peak_gap = gap; closest_peak_value = peak_values[j];}} float Peakgap = closest_peak_value>= 0 ? closest_peak_value - last_flow_value : FLT_MAX.

[0043] The method for reducing the current range hood exhaust speed within the duration of a smooth gas reference period is: reducing the rotation speed of the current range hood by 100 r / min within the duration of a smooth gas reference period.

[0044] The method for increasing the smoking speed of the current range hood within the duration of a smooth gas reference period is: increasing the rotation speed of the current range hood by 100 r / min within the duration of a smooth gas reference period.

[0045] Example 2 This embodiment 2 replaces the method of monitoring the smoothed gas reference period according to the temperature value on the basis of embodiment 1, specifically: Preferably, after the range hood is started, the smoothing gas reference period is monitored according to the temperature value, specifically including: After the range hood is started, the temperature value of the burner is collected once every T interval through a K-type thermocouple; the average of all collected temperature values ​​is recorded as JTmp1, and all temperature values ​​less than JTmp1 are taken to form a sequence recorded as a low temperature sequence; according to the time sequence of collection, the time intervals between each temperature value in the low temperature sequence are taken to form a sequence recorded as a linear interval sequence; Calculate the most recent start time, the specific method is: The mean of all temperature values ​​in the low temperature series is taken as JTmp2; The acquisition time corresponding to the first temperature value less than JTmp2 after the range hood is started is recorded as the surge start time; The surge amplification ratio corresponding to each time interval in the linear interval sequence is calculated in sequence; Each time interval in the linear interval sequence is multiplied by the surge amplification ratio corresponding to each time interval to obtain each amplified time interval; the average value of all amplified time intervals is recorded as the surge duration; The latest start time is the time after the surge duration time has passed since the surge start time.

[0046] The acquisition time of the temperature value less than JTmp2 closest to the current time in the low temperature sequence is taken as the latest end time, and the time period from the latest start time to the latest end time is taken as the smoothing gas reference period.

[0047] Among them, the calculation method of calculating the corresponding surge amplification ratio of each time interval in the linear interval sequence in sequence is as follows: the average of each interval time in the linear interval sequence is recorded as the linear interval average; the time interval for which the corresponding surge amplification ratio is to be calculated in the linear interval sequence is taken as the current time interval, and each temperature value in the current time interval is selected in the low temperature sequence to form a sequence recorded as forming the current temperature sequence; the minimum value in the current temperature sequence is marked as Temp1; in the current temperature sequence, judgments are made in sequence starting from the position of Temp1: if the temperature value is less than the linear interval average for the first time, the temperature value is recorded as Temp2; the interval length of the acquisition time from Temp1 to Temp2 is taken as the surge duration corresponding to the current time interval; then the surge amplification ratio corresponding to the current time interval is the ratio of the surge duration corresponding to the current time interval to the linear interval average.

[0048] Among them, the key source code of the C language description of the specific implementation of the specific method of sequentially calculating the surge amplification ratio corresponding to each time interval in the linear interval sequence is: / / Function: Calculate surge amplification ratio void calculate_throttle_amplification_ratio() { / / Step 1: Calculate the linear interval mean float linear_interval_mean = calculate_mean(linear_intervals,interval_count); for (int i = 0; i <interval_count; i++) { float current_interval = linear_intervals[i]; / / Step 2: Filter low temperature values ​​within the current time interval int start_index=(i== 0) ? 0 : (i- 1); / / Assume the start position is the end position of the previous interval / / Create the current temperature sequence TemperatureReading current_temp_sequence[MAX_READINGS]; int current_temp_count = 0; for (int j = start_index; j <low_temp_count&& difftime(low_temp_readings[j + 1].timestamp, low_temp_readings[start_index].timestamp)<= current_interval; j++) { current_temp_sequence[current_temp_count++] = low_temp_readings[j]; } / / Step 3: Find the minimum value Temp1 and record its index if (current_temp_count>0) { float Temp1 = current_temp_sequence[0].temperature; int Temp1_index = 0; for (int k = 1; k <current_temp_count; k++) { if (current_temp_sequence[k].temperature <Temp1) { Temp1 = current_temp_sequence[k].temperature; Temp1_index = k; } } / / Step 4: Starting from Temp1, find the first temperature value Temp2 that is less than the mean of the linear interval float Temp2; time_t duration_between_Temp1_and_Temp2; for (int k = Temp1_index; k <current_temp_count; k++) { if (current_temp_sequence[k].temperature <linear_interval_mean) { Temp2 = current_temp_sequence[k].temperature; duration_between_Temp1_and_Temp2 = difftime(current_temp_sequence[k].timestamp, current_temp_sequence[Temp1_index].timestamp); break;}} / / Step 5: The ratio of the surge duration corresponding to the current time interval to the linear interval mean is the surge amplification ratio float amplification_ratio = duration_between_Temp1_and_Temp2 / linear_interval_mean;}}}.

[0049] like Figure 1 The figure shows a flow chart of a gas stove control method. Figure 1 To illustrate a gas stove control method according to an embodiment of the present invention, according to another aspect of the disclosed embodiment of the present invention, a gas stove control method is provided, which is applied to the above-mentioned gas stove, and the method includes: Obtain the gas flow information collected by the gas flow collection module; Get the temperature value information of the furnace head collected by the K-type thermocouple; The control module dynamically adjusts the smoke extraction speed of the range hood through the connection module according to the gas flow information and the temperature value information.

[0050] Although the description of the present invention has been quite detailed and has been described in particular with respect to several described embodiments, it is not intended to be limited to any of these details or embodiments or any particular embodiment, so as to effectively cover the intended scope of the present invention. In addition, the present invention is described above with the embodiments foreseeable by the inventors, and its purpose is to provide a useful description, and those non-substantial changes to the present invention that are not currently foreseen may still represent equivalent changes of the present invention.

Claims

1. A gas stove, characterized in that: The gas stove comprises: A control module, a gas flow collection module and a connection module, wherein the gas flow collection module is arranged on the air inlet pipe of the gas stove, the gas stove comprises a burner, and a K-type thermocouple is arranged on the burner; the control module is electrically connected to the gas flow collection module, the K-type thermocouple and the connection module respectively; The control module sends a control signal to control the range hood through the connection module; the connection module is used to connect to the range hood and send a control signal; the gas flow acquisition module is used to collect gas flow information in the corresponding air intake pipe and send it to the control module; the K-type thermocouple is used to collect temperature value information of the burner and send it to the control module; Among them, the control module dynamically adjusts the suction speed of the range hood through the connection module according to the gas flow information and the temperature value information.

2. A gas stove according to claim 1, characterized in that: The specific method for the control module to dynamically adjust the smoke extraction speed of the range hood through the connection module according to the gas flow information and the temperature value information is as follows: After the range hood is started, the smooth gas reference period is monitored according to the temperature value; When a new smooth gas reference period is detected, the connection module sends an adjustment instruction to adjust the smoke extraction speed of the range hood within the duration of the smooth gas reference period.

3. A gas stove according to claim 2, characterized in that: The specific method of monitoring the smooth gas reference period according to the temperature value is as follows: after the range hood is started, the temperature value of the burner is collected once every interval T through a K-type thermocouple; the temperature value collected before the most recently collected temperature value CD is C1, and the temperature value collected before C1 is C2. If C1 is less than C2 and less than CD, the collection time of C1 is used as the settlement time; each temperature value is compared in reverse order of the collection time from the settlement time. If a temperature value is less than the previous temperature value of the temperature value and less than the next temperature value of the temperature value, the collection time of the temperature value is marked as the starting time; The time period between the start time and the settlement time is taken as the smoothing gas reference period, and T is set to 200 milliseconds to 8000 milliseconds.

4. A gas stove according to claim 3, characterized in that: Replace the specific method of monitoring the smoothed gas reference period based on the temperature value with: After the range hood is started, the temperature value of the burner is collected once every T interval through a K-type thermocouple; the average of all collected temperature values ​​is recorded as JTmp1, and all temperature values ​​less than JTmp1 are taken to form a sequence recorded as a low temperature sequence; according to the time sequence of collection, the time intervals between each temperature value in the low temperature sequence are taken to form a sequence recorded as a linear interval sequence; Calculate the most recent start time, the specific method is: The mean of all temperature values ​​in the low temperature series is taken as JTmp2; The acquisition time corresponding to the first temperature value less than JTmp2 after the range hood is started is recorded as the surge start time; The surge amplification ratio corresponding to each time interval in the linear interval sequence is calculated in sequence; Each time interval in the linear interval sequence is multiplied by the surge amplification ratio corresponding to each time interval to obtain each amplified time interval; the average value of all amplified time intervals is recorded as the surge duration; The latest start time is the time after the surge duration from the surge start time; The acquisition time of the temperature value less than JTmp2 closest to the current time in the low temperature sequence is taken as the latest end time, and the time period from the latest start time to the latest end time is taken as the smoothing gas reference period.

5. A gas stove according to claim 4, characterized in that: The calculation method for calculating the corresponding surge amplification ratio of each time interval in the linear interval sequence is as follows: the average of each interval time in the linear interval sequence is recorded as the linear interval average; the time interval for calculating the corresponding surge amplification ratio in the linear interval sequence is taken as the current time interval, and each temperature value in the current time interval is selected in the low temperature sequence to form a sequence recorded as forming the current temperature sequence; the minimum value in the current temperature sequence is marked as Temp1; in the current temperature sequence, judgments are made in sequence starting from the position of Temp1: if the temperature value is less than the linear interval average for the first time, the temperature value is recorded as Temp2; the interval length of the acquisition time from Temp1 to Temp2 is taken as the surge duration corresponding to the current time interval; then the surge amplification ratio corresponding to the current time interval is the ratio of the surge duration corresponding to the current time interval to the linear interval average.

6. A gas stove according to claim 2, characterized in that: The method for adjusting the smoke extraction speed of the range hood within the duration of the smooth gas reference period is: The time corresponding to the maximum flow value collected by the gas flow collection module from the time when the range hood is started to the current time is taken as the adjustment inflection point time TrunT; Mark all flow values ​​collected from the time TrunT during the smooth gas reference period that are less than the most recently collected flow value as smooth valley flow; The value with the smallest difference between all smoothed valley flow values ​​and the most recently collected flow value is recorded as the nearest valley flow value, and the difference between the most recently collected flow value and the nearest valley flow value is calculated as the valley gap; Mark all flow values ​​collected from the time TrunT during the smooth gas reference period that are greater than the most recently collected flow value as smoothed peak flow; The value with the smallest difference between all smoothed peak flows and the most recently collected flow value is recorded as the approximate peak flow, and the difference between the approximate peak flow and the most recently collected flow value is calculated as the peak gap Peakgap; When Vallygap<Peakgap, the current range hood's smoking speed is reduced within the duration of a smooth gas reference period; When Vallygap>Peakgap, the current range hood's smoking speed is increased within the duration of a smooth gas reference period; When Vallygap is equal to Peakgap, the current range hood's exhaust speed remains unchanged.

7. A gas stove according to claim 6, characterized in that: The method for adjusting the smoke extraction speed of the range hood within the duration of the smooth gas reference period is: The method for reducing the smoking speed of the current range hood within the duration of a smooth gas reference period is as follows: reducing the speed of the current range hood by 100 to 300 r / min within the duration of a smooth gas reference period; The method for increasing the smoking speed of the current range hood within the duration of a smooth gas reference period is: increasing the rotation speed of the current range hood by 100 to 300 r / min within the duration of a smooth gas reference period.

8. A gas stove according to claim 6, characterized in that: The method for adjusting the smoke extraction speed of the range hood within the duration of the smooth gas reference period is: The method for reducing the current range hood exhaust speed within the duration of a smooth gas reference period is: reducing the current range hood exhaust speed by 15-30% multiple within the duration of a smooth gas reference period; The method for increasing the current range hood's exhaust speed within a smooth gas reference period is: increasing the current range hood's rotation speed by 15 to 30% within a smooth gas reference period.

9. A gas stove control method, characterized in that: The gas stove control method is applied to the gas stove according to any one of claims 1 to 8, and the method comprises: Obtain the gas flow information collected by the gas flow collection module; Get the temperature value information of the furnace head collected by the K-type thermocouple; The control module dynamically adjusts the smoke extraction speed of the range hood through the connection module according to the gas flow information and the temperature value information.

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