A smart gas stove burner

Abstract

This invention relates to the field of burners for burning gaseous fuels. The invention provides an intelligent gas stove burner, including a cookware, a furnace base, a combustion control module, a nozzle array control module, an intelligent detection module, and an evaluation module. The combustion control module controls the gas flow rate and air mixing ratio to form an adjustable flame. The nozzle array control module adjusts the flame injection direction and output parameters to achieve directional flame distribution in space. The intelligent detection module acquires cookware status data, adjustable flame heating status data, and actual flame distribution data. The evaluation module calculates the target heat load currently required by the cookware based on the cookware status data, adjustable flame heating status data, and actual flame distribution data received from the intelligent detection module, transmits the target heat load to the combustion control module, and simultaneously evaluates the injection strategy of the nozzle array control module and outputs control commands.

Description

Technical Field

[0001] This invention relates to the field of burners for burning gaseous fuels, and more particularly to an intelligent gas stove burner. Background Technology

[0002] Traditional gas stove burners generally use fixed nozzles and static flame configurations. Although they can achieve basic combustion functions under the conditions of standardized cookware and stable gas supply, in actual applications, due to the variety of cookware types, flexible usage methods, gas pressure fluctuations, environmental disturbances, and other factors, problems such as uneven heat distribution, low heat utilization, insufficient or overheating of local areas, flame drift, and even backfire often occur, which seriously affect cooking efficiency and safety.

[0003] For example, Chinese patent CN2742292Y discloses a gas nozzle with adjustable combustion direction, which mainly uses a mechanical structure to adjust the nozzle outlet direction to adapt to different heating requirements. While this solution provides a certain degree of flexibility in flame direction at the structural level, its technical implementation still suffers from the following prominent drawbacks:

[0004] 1) Its flame direction adjustment is a mechanical rotation control of a single nozzle, lacking an array-like and linkage structure design, and cannot achieve spatial customization of the firepower on the entire bottom surface of the pot.

[0005] 2) It lacks an intelligent recognition mechanism and cannot identify the size, material, or heating status of the cookware. Flame adjustment relies on human judgment and operation, resulting in a poor user experience.

[0006] 3) It lacks the ability to detect and provide feedback on the flame status or the temperature of the bottom of the pot in real time, and lacks a closed-loop control system, so the firepower adjustment cannot achieve dynamic response.

[0007] 4) The lack of an integrated safety monitoring module means it cannot perform rapid protection actions in case of abnormal combustion or gas source fluctuations, posing a risk to its use.

[0008] In addition, the existing technology also has the following widespread drawbacks:

[0009] 1. Nozzle structures are generally fixed in angle and distribution, making it difficult to adaptively adjust the flame pattern according to the actual cookware conditions;

[0010] 2. The sensor input dimensions are limited, mostly limited to temperature or air pressure monitoring, and lack multi-source fusion sensing systems such as weight and infrared images;

[0011] 3. The control strategies are mostly based on traditional mechanical / electronic control switching, lacking dynamic firing logic supported by intelligent algorithms;

[0012] This invention was developed to address the common problems in the field, such as fixed flame configuration, rigid adjustment methods, poor cookware compatibility, insufficient sensing capabilities, slow control response, and weak safety protection. Summary of the Invention

[0013] The purpose of this invention is to address the shortcomings of current technologies by proposing an intelligent gas stove burner.

[0014] To overcome the shortcomings of the prior art, the present invention adopts the following technical solution:

[0015] A smart gas stove burner includes a cookware and a furnace base. The smart gas stove burner also includes a combustion control module, a nozzle array control module, a smart detection module, and an evaluation module. The combustion control module is used to control the gas flow rate and air mixing ratio to form an adjustable flame.

[0016] The nozzle array control module is used to adjust the flame jet direction and output parameters to achieve the directional distribution and configuration reconstruction of the flame in space;

[0017] The intelligent detection module is used to acquire the status data of the cookware, the heating status data of the adjustable flame, and the actual flame distribution data;

[0018] The evaluation module calculates the target heat load currently required by the cookware based on the cookware status data, adjustable flame heating status data, and actual flame distribution data provided by the intelligent detection module, and transmits the target heat load to the combustion control module. At the same time, it evaluates the injection strategy of the nozzle array control module and outputs control commands.

[0019] The intelligent detection module includes a cookware identification detection unit and a flame distribution detection unit. The cookware identification detection unit is set on the furnace cavity base and in direct contact with the cookware to obtain the bottom center of gravity offset and material thermal conductivity characteristics of the cookware to form cookware status data. The flame distribution detection unit is set around the flame jet path to obtain heating status data of the adjustable flame.

[0020] Optionally, the nozzle array control module includes a nozzle adjustment control component, at least two nozzle units disposed on the furnace cavity base, and an independently driveable electronic control adjustment mechanism associated with the at least two nozzle units. The at least two nozzle units are arranged in a preset array structure to cover multiple heating areas on the bottom of the cookware. The nozzle adjustment control component receives the injection strategy output by the evaluation module and, in conjunction with the cookware status data and the target heat load, generates injection direction angle and exhaust intensity control commands for each nozzle unit. The electronic control adjustment mechanism receives commands from the corresponding nozzle adjustment control component and drives the connected nozzle units to perform injection direction adjustment and flow control, thereby realizing spatial linkage adjustment of the array nozzles to form a flame configuration adapted to the heat requirements of the cookware.

[0021] Optionally, the combustion control module includes a gas supply regulation unit and an air mixing ratio regulation unit. The gas supply regulation unit adjusts the gas flow rate according to the target heat load. The air mixing ratio regulation unit is used to dynamically adjust the mixing ratio of air and gas so that the mixture concentration matches the needs of different combustion stages.

[0022] Optionally, the evaluation module includes a data processing unit and a control strategy unit. The data processing unit receives cookware status data, flame heating status data, and flame distribution data from the intelligent detection module. Combining the cookware's heat capacity parameters, bottom temperature distribution gradient, and flame coverage area offset, it calculates the target heat load corresponding to the cookware based on a preset multi-parameter evaluation model. The control strategy unit generates gas flow and air ratio control commands for the combustion control module based on the target heat load. Combining the flame distribution deviation information, it calculates the injection direction and output intensity parameters of each nozzle unit in the nozzle array control module to achieve adaptive optimization of the flame spatial configuration.

[0023] Optionally, the multi-parameter evaluation model is constructed based on the cookware's physical parameters, temperature response characteristics, and the flame's spatial interaction state, and includes the following steps:

[0024] S1. Collect data on the eccentric position of the cookware, the temperature distribution at the bottom, and the flame coverage area;

[0025] S2. Divide the heating area at the bottom of the pot into grid areas and analyze the target temperature rise requirement and the current temperature change rate of each grid area.

[0026] S3. Determine the spatial thermal deviation function by calculating the offset relationship between the flame distribution center and the heat load center of the cookware;

[0027] S4. Output the current target heat load of the cookware based on the total heat deviation, and generate a spatial heat compensation strategy for the nozzle array control module.

[0028] Optionally, the cookware identification and detection unit includes a pressure sensing component, a bottom contact area detection component, an infrared material identification component, and a cookware status calculator. The pressure sensing component is disposed on the support surface of the oven cavity base and senses the vertical pressure distribution at each contact point of the cookware to obtain data on the total mass of the cookware and the offset position of the bottom center of gravity. The bottom contact area detection component is disposed on the contact end surface between the oven cavity base and the cookware to sense the contact area of ​​the cookware. The infrared material identification component is disposed on the contact end surface between the oven cavity base and the cookware and obtains the reflectivity or emissivity data of the bottom of the cookware in a specific wavelength band to indirectly obtain the thermal conductivity characteristics of the cookware material. The cookware status calculator receives the results from the pressure sensing component, the bottom contact area detection component, and the infrared material identification component to output the status data of the cookware.

[0029] Optionally, the gas supply regulating unit includes a gas supply channel, a flow control valve, a pressure detection control valve, and a flow regulating controller. The gas supply channel is disposed on the furnace cavity base, and one end of the gas supply channel is externally connected to form a gas supply port. The other end of the gas supply channel passes through the furnace cavity base and extends to the upper surface of the furnace cavity base to form a gas combustion area.

[0030] The flow control valve is located in the gas supply channel and controls the gas flow rate entering the gas supply port. The pressure detection valve is installed in the gas supply channel and monitors gas pressure fluctuation data in real time. The flow regulation controller receives the target heat load value from the evaluation module and, in combination with the pressure detection and flow data, outputs a valve regulation voltage or step signal to dynamically control the gas supply of the flow control valve.

[0031] Optionally, the air mixing ratio adjustment unit includes a sensing adjustment component, a heat-conducting rib, a fixed probe, at least one sensing probe, and an auxiliary oxygen supply channel nested around the outer periphery of the gas supply channel. The sensing adjustment component is disposed on the furnace cavity base and adjusts at least one of the sensing probes. One end of the fixed probe is wedged into the gas combustion area, and the other end of the fixed probe extends into the auxiliary oxygen supply channel and is connected to the heat-conducting rib. The heat-conducting rib is spirally arranged around the inner wall of the auxiliary oxygen supply channel.

[0032] The auxiliary oxygen supply channel has at least one oxygen supply port on its side wall, and the at least one oxygen supply port is distributed at equal intervals along the side wall of the auxiliary oxygen supply channel.

[0033] Optionally, the furnace cavity base has two side walls with actuation chambers, and the induction adjustment component is disposed in the actuation chambers.

[0034] Optionally, the sensing adjustment assembly includes an adjusting roller, a fixed sleeve, and an adjusting toothed belt. The adjusting roller is hinged to the side wall of the action chamber to form an adjusting part. The adjusting toothed belt is arranged along the outer wall of the sensing probe along its length direction. The fixed sleeve is disposed through the furnace cavity base to form a sliding cavity. The sensing probe passes through the sliding cavity so that one end of the sensing probe can be wedged into the combustion zone.

[0035] The adjusting roller has teeth on the side near at least one sensing needle, and the teeth engage with the adjusting toothed belt.

[0036] The beneficial effects achieved by this invention are:

[0037] 1. The load distribution of each nozzle is determined by the nozzle array control module, and the combustion control module controls the gas-air ratio and flow rate accordingly, resulting in higher overall combustion efficiency, more stable flame output, and gas saving while adapting to the thermal characteristics of different cookware.

[0038] 2. The intelligent detection module senses the status of the cookware, the flame status, and the heat distribution on the bottom of the pot in real time, and transmits this information to the evaluation module for heat load calculation and heat deviation identification. This enables the system to dynamically analyze the current heating needs of the cookware, form a targeted target heat load model, and significantly improve the accuracy of heat distribution.

[0039] 3. By evaluating the spatial heat demand and flame compensation strategy output by the evaluation module, the nozzle array control module is driven to calculate and control the injection angle and gas intensity of each nozzle, so that the flame configuration can be adaptively changed according to the state of the cookware, and the spatial heat field can be finely controlled.

[0040] 4. The intelligent detection module provides multi-dimensional sensing of the cookware status, flame coverage, and temperature distribution at the bottom of the pot, and transmits the data in real time to the evaluation module for cookware heat load assessment and flame deviation analysis. The nozzle array control module further adjusts the injection direction and gas output intensity based on the evaluation results, while the combustion control module dynamically regulates the gas flow rate and air ratio, thus forming a closed-loop adaptive combustion control mechanism. This enables the entire device to dynamically respond to changes in the cookware and precisely control the flame, with advantages such as high thermal efficiency, strong adaptability, and rapid response. Attached Figure Description

[0041] The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but rather the emphasis is on illustrating the principles of the embodiments. In different views, the same reference numerals designate the same parts.

[0042] Figure 1 This is a top view of the present invention.

[0043] Figure 2 This is a schematic diagram of the overall block shape of the present invention.

[0044] Figure 3 This is a block diagram of the intelligent detection module of the present invention.

[0045] Figure 4 for Figure 1 Schematic diagram of cross-section at point AA.

[0046] Figure 5 for Figure 1 Schematic diagram of cross-section at point BB.

[0047] Figure 6 for Figure 4 Enlarged schematic diagram of section C.

[0048] Figure 7 for Figure 4 Enlarged schematic diagram of section D in the middle.

[0049] Figure 8 for Figure 7 Enlarged schematic diagram of section F in the middle.

[0050] Figure 9 for Figure 4 Enlarged schematic diagram of section E in the middle.

[0051] Figure 10 for Figure 5 Enlarged schematic diagram of section G in the middle.

[0052] Explanation of reference numerals in the attached drawings: 1. Furnace base; 2. Air inlet; 3. Gas supply channel; 4. Flow control valve; 5. Cookware; 6. Furnace frame; 7. Action chamber; 8. Oxygen supply port; 9. Shape memory alloy deformable sheet; 10. Heat-conducting rib; 11. Fixed probe; 12. Infrared emitting component; 13. Infrared receiving component; 14. Transmission block; 15. Conductive spring; 16. Piezoelectric sensor; 17. Electrically controlled adjustment mechanism; 18. Limiting rod; 19. Nozzle; 20. Connecting pipe; 21. Fixed sleeve; 22. Turning part; 23. Fixed air outlet mesh; 24. Action chamber; 25. Adjusting roller; 26. Adjusting toothed belt; 27. Induction probe; 28. Sliding rail; 29. ​​Conductive rod; 30. Sliding block; 31. Linear solenoid valve; 32. Infrared optical sensor. Detailed Implementation

[0053] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present invention. Furthermore, the accompanying drawings of the present invention are for simple illustrative purposes only and are not depictions of actual dimensions; this is stated beforehand. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention.

[0054] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 This embodiment provides an intelligent gas stove burner, which includes a cookware 5 and a furnace base 1. The intelligent gas stove burner also includes a combustion control module, a nozzle array control module, an intelligent detection module and an evaluation module. The combustion control module is used to control the gas flow rate and air mixing ratio to form an adjustable flame.

[0055] The nozzle array control module is used to adjust the flame jet direction and output parameters to achieve the directional distribution and configuration reconstruction of the flame in space;

[0056] The intelligent detection module is used to acquire the status data of cookware 5 and the heating status data of the adjustable flame;

[0057] The evaluation module calculates the target heat load currently required by the cookware 5 based on the status data of the cookware 5 and the heating status data of the adjustable flame provided by the intelligent detection module, and transmits the target heat load to the combustion control module. At the same time, it evaluates the injection strategy of the nozzle array control module and outputs control commands.

[0058] The intelligent burner also includes a central processing unit, which is connected to the combustion control module, the nozzle array control module, the intelligent detection module, the evaluation module, and the safety protection module. The central processing unit centrally controls the combustion control module, the nozzle array control module, the intelligent detection module, and the evaluation module to improve the combustion efficiency and reliability of the entire device.

[0059] The intelligent detection module includes a cookware 5 identification and detection unit and a flame distribution detection unit. The cookware 5 identification and detection unit is set on the furnace cavity base 1 and is in direct contact with the cookware 5 to obtain the bottom center of gravity offset and material thermal conductivity characteristics of the cookware 5 to form the status data of the cookware 5. The flame distribution detection unit is set around the flame jet path to obtain the heating status data of the adjustable flame.

[0060] The flame distribution detection unit includes multiple infrared optical sensors 32 arranged around the flame jet path to collect thermal radiation or temperature signals at different spatial locations in the flame area in real time, so as to obtain the actual distribution status of the flame heating area.

[0061] The infrared optical sensor 32 is preferably a thermopile sensor that is sensitive to the mid-infrared band, which can detect its radiation intensity without contacting the flame.

[0062] In this embodiment, the optical sensors are distributed on the furnace base 1 and furnace frame 6, forming a spatial array to collect real-time heating status data of the flame. Optionally, the cookware 5 identification and detection unit includes a pressure sensing component, an infrared material identification component, and a cookware 5 status calculator. The pressure sensing component is disposed on each support frame of the furnace base 1 and furnace frame 6, and senses the vertical pressure distribution at each contact point of the cookware 5 to obtain data on the total mass and bottom center of gravity offset of the cookware 5. The infrared material identification component is disposed on the contact end surface between the furnace base 1 and the cookware 5, and obtains the reflectivity or emissivity data of the bottom of the cookware 5 in a specific wavelength band to indirectly obtain the thermal conductivity characteristics of the cookware 5 material. The cookware 5 status calculator receives the results from the pressure sensing component and the infrared material identification component to output the status data of the cookware 5.

[0063] The pressure sensing component includes a piezoelectric sensor 16, an amplifier, and an analog-to-digital converter. The piezoelectric sensor 16 is distributed on multiple support points of each support frame of the stove rack 6 to sense the vertical mechanical pressure at each contact point when the cookware 5 is placed, and converts the pressure into a low-level analog voltage signal of corresponding amplitude. The amplifier receives the voltage signal output by the piezoelectric sensor 16 and amplifies it. The analog-to-digital converter converts the amplified analog voltage signal into a digital signal.

[0064] The pressure sensing component also includes a transmission block 14, a conductive spring 15, and a conductive cavity disposed within the stove frame 6. The piezoelectric sensor 16 is disposed on the bottom wall of the conductive cavity. One end of the conductive spring 15 is connected to the lower end wall of the transmission block 14, and the other end of the conductive spring 15 abuts against the piezoelectric sensor 16, so that the conductive spring 15 can transmit the vertical pressure data of the cookware 5 to the piezoelectric sensor 16, and ensure that the vertical pressure data of the cookware 5 is collected by the piezoelectric sensor 16.

[0065] like Figure 4 As shown, after the cookware 5 is placed on the stove rack 6, the weight of the cookware 5 is directly transmitted to the transmission block 14, and the vertical data is transmitted to the piezoelectric sensor 16 through the transmission spring 15.

[0066] The infrared material identification component includes an infrared emitting component 12, an infrared receiving component 13, a signal conditioning circuit, an analog-to-digital converter, and a material identification processor. The infrared emitting component 12 is used to radiate infrared light of a specific wavelength (preferably 8–12 μm) to the bottom of the cookware 5 after it is placed, exciting the surface of the cookware 5 to generate a reflection signal. The infrared emitting component 12 includes a mid-infrared LED array or a quantum cascade laser. The infrared receiving component 13 is disposed on the inner wall of the oven cavity opposite to the bottom of the cookware 5, and is used to receive the reflected infrared radiation and output an analog voltage signal. The infrared receiving component 13 includes a thermopile sensor or an infrared photodetector. The signal conditioning circuit is used to enhance the amplitude of the received signal and filter out high-frequency noise to improve the signal-to-noise ratio. The signal conditioning circuit includes an amplifier and a low-pass filter network. The analog-to-digital converter (ADC) is used to convert the analog signal output by the infrared receiving unit into a digital signal for easy processing. The signal conditioning circuit includes an input interface, a differential amplifier module, a gain adjustment amplifier, an RC low-pass filter network, and a sample-and-hold unit.

[0067] Wherein: the input interface is connected to the signal output terminal of the infrared receiving component 13 (such as a thermopile sensor); the differential amplifier module consists of dual operational amplifiers, receiving the differential output signal of the infrared receiving component 13 and performing common-mode interference suppression and primary amplification processing; the gain adjustment amplifier consists of an operational amplifier, a feedback resistor, and an adjustable potentiometer, used to dynamically set the voltage gain according to the actual infrared reflected signal intensity, with a gain factor of: In the formula, G is the voltage gain of the amplifier (dimensionless), representing the ratio of the output voltage to the input voltage; R f The feedback resistor is connected between the output and negative input terminals of the operational amplifier to control the feedback amount; R inThis is the input resistor, connected between the input signal and the negative input terminal of the operational amplifier, used to set the impedance of the input channel. The above parameters need to be reasonably selected and adjusted based on factors such as target gain, circuit environment, and noise margin; in this embodiment, they will not be elaborated upon further.

[0068] The RC low-pass filter network is connected to the output of the gain amplifier and consists of a limiting resistor and a filter capacitor connected in series, with a cutoff frequency f. c : In the formula, R is the resistance value, usually the limiting resistor or load resistor in the filter circuit. C is the capacitance value, the filter capacitor. The above formula is applicable to first-order RC filter circuits (such as RC low-pass or RC high-pass). R and C can be selected according to actual needs to design the required filter characteristics (i.e., set the frequency range that the filter blocks or passes). The cutoff frequency f is... c Used to filter out high-frequency electromagnetic interference;

[0069] The sample-and-hold unit is composed of a sample-and-hold chip (such as LF398), which acquires and latches the filtered analog signal and outputs it to an analog-to-digital converter (ADC) for digital processing.

[0070] In addition, in this embodiment, the signal-to-noise ratio is improved by a signal conditioning circuit to enhance the amplitude and filter out high-frequency noise of the data received by the infrared transmitting component and the infrared receiving component. This is a conventional technical means. Those skilled in the art can obtain this technology from relevant technical manuals and implement it. This is a technical means well known to those skilled in the art, so it will not be described in detail in this embodiment.

[0071] The material recognition processor is used to identify and analyze the infrared reflection characteristics of the material at the bottom of the cookware, and then determine its thermal conductivity parameters; specifically, the material recognition processor identifies the cookware and determines its thermal conductivity parameters according to the following steps;

[0072] S31. The material identification processor receives the reflection intensity signal collected by the infrared receiving unit through an analog-to-digital converter. The signal is in the form of a set of time-series digital voltage values ​​in a set wavelength band (e.g., 8–12 μm).

[0073] S32. Use the moving average filtering algorithm to remove high-frequency jitter and obtain a steady-state reflection intensity sequence; normalize the sequence so that the reflection value falls into the standard 0-1 range for easy comparison.

[0074] S33. Calculate the average reflectance R of the normalized sequence. avg As an optical characteristic index of cookware materials.

[0075] Among them, the average reflectance R of the normalized sequence avgCalculate according to the following formula:

[0076] In the formula, R i is the normalized reflection intensity value recorded by the infrared receiving unit at the i-th sampling time, and N is the total number of sampling points within the preset sampling period.

[0077] S34, extract the R avg Match the material properties with the locally stored material property database using the minimum Euclidean distance:

[0078]

[0079] In the formula, R i ref Let be the standard reflectance of the i-th material in the same wavelength band.

[0080] S35. Output the corresponding material type (such as "aluminum", "stainless steel", "cast iron", etc.) based on the most matching material number, and call the thermal conductivity parameters of the material in the database.

[0081] S36. Output the thermal conductivity parameters corresponding to the material, including thermal conductivity k, thermal diffusivity α, and specific heat capacity C. Transmit the thermal conductivity parameters to the evaluation module and use them to calculate the target heat load of the cookware.

[0082] For example: when the average infrared reflectance is R avg When the reflectance is 0.16, the standard reflectance range (0.15~0.18) of stainless steel cookware in the database is matched, and the cookware is identified as stainless steel. The corresponding thermal conductivity k = 16.2 W / (m·K) is then transmitted to the evaluation module to participate in the calculation of the target heat load of the cookware.

[0083] The cookware status calculator receives results from the pressure sensing component, the bottom contact area detection component, and the infrared material identification component, and calculates the estimated mass M of the cookware.

[0084]

[0085] In the formula, P i Let n be the vertical pressure value output by each piezoelectric sensing element, n be the total number of sensors distributed on the furnace frame support points in the piezoelectric sensing assembly, and g be the standard gravitational acceleration constant, approximately 9.8 m / s². 2 .

[0086] Simultaneously, the cookware status calculator calculates the coordinates (x, y) of the center of gravity of the pot bottom based on the pressure differences at the distribution points. g y g ):

[0087]

[0088] In the formula, M is the estimated mass of the cookware, and P... i Let n be the vertical pressure value output by each piezoelectric sensing element, n be the total number of sensors distributed on the furnace frame support points in the piezoelectric sensing assembly, and g be the standard gravitational acceleration constant, approximately 9.8 m / s². 2 .

[0089] The cookware status calculator will R avg By comparing with a material database, the cookware material type is identified; the corresponding thermal conductivity k, thermal diffusivity α, and specific heat capacity C are output.

[0090] The cookware status calculator constructs a status data packet:

[0091] State = {M,A} c ,(x g ,y g ),k,α,C};

[0092] The cookware status calculator transmits the status data packet State to the data processing unit of the evaluation module via a bus.

[0093] Optionally, the combustion control module includes a gas supply regulation unit and an air mixing ratio regulation unit. The gas supply regulation unit adjusts the gas flow rate according to the target heat load to provide basic heat source regulation. The air mixing ratio regulation unit is used to dynamically adjust the mixing ratio of air and gas so that the mixture concentration matches the needs of different combustion stages.

[0094] Optionally, the gas supply regulating unit includes a gas supply channel 3, a flow control valve 4, a pressure detection control valve, and a flow regulating controller. The gas supply channel 3 is disposed on the furnace base 1, and one end of the gas supply channel 3 is externally connected to form a gas supply port. The other end of the gas supply channel 3 passes through the furnace base 1 and extends to the upper surface of the furnace base 1 to form a gas combustion area.

[0095] The flow control valve 4 is located in the gas supply channel 3 and controls the gas flow rate entering the gas supply port. The pressure detection valve is installed in the gas supply channel 3 and monitors the gas pressure fluctuation data in real time. The flow regulation controller receives the target heat load value from the evaluation module and, in combination with the pressure detection and flow data, outputs a valve regulation voltage or step signal to dynamically control the gas supply of the flow control valve 4.

[0096] Specifically, the flow regulation controller is located in or near the control module area inside the furnace base 1, and is electrically connected to the flow control valve 4 and the pressure detection control valve via wires. The flow regulation controller receives the target heat load value output by the evaluation module, and, in conjunction with the real-time pressure data provided by the pressure detection control valve, outputs a control signal (voltage or step signal) to the flow control valve 4 to achieve dynamic regulation of the gas supply. Optionally, the air mixing ratio adjustment unit includes an induction adjustment component, a heat-conducting rib 10, a fixed probe 11, at least one induction probe 27, and an auxiliary oxygen supply channel nested around the outer periphery of the gas supply channel 3. The induction adjustment component is located on the furnace base 1 and adjusts at least one of the induction probes 27. One end of the fixed probe 11 is wedged into the gas combustion area, and the other end of the fixed probe 11 extends into the auxiliary oxygen supply channel and is connected to the heat-conducting rib 10. The heat-conducting rib 10 is spirally arranged around the inner wall of the auxiliary oxygen supply channel.

[0097] The auxiliary oxygen supply channel has at least one oxygen supply port 8 on its side wall, and the at least one oxygen supply port 8 is evenly distributed along the side wall of the auxiliary oxygen supply channel. Optionally, the furnace cavity base 1 has two side walls with actuation chambers 24, and the induction adjustment component is disposed in the actuation chambers 24.

[0098] In this embodiment, a shape memory alloy (SMA) deformable sheet is fixedly installed at each oxygen supply port 8 on the side wall of the auxiliary oxygen supply channel to control the opening and closing state of the supply port. One end of the shape memory alloy deformable sheet 9 is connected to one side of the oxygen supply port 8, and the other end extends upwards towards the oxygen supply port 8, so as to linearly change the opening and closing state of the oxygen supply port 8 according to the heat conducted by the combustion zone. The shape memory alloy deformable sheet 9 is connected to the heat-conducting rib 10 through a heat-conducting sheet, so that the heat generated in the combustion zone can be transferred along the heat-conducting rib 10 to the shape memory alloy deformable sheet 9, driving it to complete the shape change. Figure 4 As shown, external oxygen enters the oxygen supply port 8 and enters the auxiliary oxygen supply channel along the route a→b.

[0099] Specifically, the heat-conducting ribs 10 are spirally arranged along the inner wall of the auxiliary oxygen supply channel and directly connected to the back of the shape memory alloy deformable sheet 9 located on the side wall of the oxygen supply port 8, forming a heat conduction path. When the pot 5 is heated, the heat in the combustion zone increases, and is transmitted to the heat-conducting ribs 10 via the fixed probe 11, the sensing needle, and the sliding rail 28, and further conducted to the shape memory alloy deformable sheet 9. After reaching the set transformation temperature (set to 120℃ in this embodiment), the shape memory alloy deformable sheet 9 transforms from martensite to austenite and returns to its preset bent shape, thereby causing the tongue plate to open the oxygen supply port 8, increasing auxiliary oxygen supply and improving combustion efficiency.

[0100] When the temperature drops, the shape memory alloy deformable sheet 9 returns to its initial state due to the material properties, which drives the adjustment of the opening of the shape memory alloy deformable sheet 9, thus achieving automatic self-adjustment.

[0101] It automatically adjusts oxygen supply by burning heat, and has the advantages of simple structure, rapid response, energy saving and high efficiency.

[0102] Optionally, the sensing adjustment assembly includes an adjusting roller 25, a fixing sleeve 21, and an adjusting toothed belt 26. The adjusting roller 25 is hinged to the side wall of the actuation cavity 24 to form an adjusting part. The adjusting toothed belt 26 is arranged along the outer wall of the sensing probe 27 along its length direction. The fixing sleeve 21 is disposed through the furnace cavity base 1 to form a sliding cavity. The sensing probe 27 passes through the sliding cavity so that one end of the sensing probe 27 can be wedged into the combustion zone.

[0103] The adjusting roller 25 has teeth on the side near at least one sensing needle, and the teeth engage with the adjusting toothed belt 26.

[0104] The isolation sleeve separates the sensing needle from the auxiliary oxygen supply channel and the gas supply channel 3.

[0105] like Figure 10 As shown, the teeth are arranged along the extension direction of the sensing needle rod and are disposed on the outer wall surface of the sensing needle.

[0106] like Figure 10 As shown, the sensing adjustment assembly also includes a sliding block 30, a conductive rod 29, and a sliding track 28 disposed in the auxiliary oxygen supply channel. One end of the conductive rod 29 is connected to the sliding block 30, and the other end of the conductive rod 29 is connected to the end of the sensing needle away from the combustion area to form an L-shaped sliding part. The sliding block 30 is slidably connected to the sliding track 28 and transfers the heat conducted by the conductive rod 29 to the sliding track 28. At the same time, the sliding track 28 is connected to the heat-conducting rib 10 to form a heat transmission channel.

[0107] like Figure 10 As shown, the heat-conducting ribs 10 are spirally arranged around the inner wall of the auxiliary oxygen supply channel and connected to the outer wall of the sliding track 28, so that the heat on the sliding track 28 can be smoothly conducted to the heat-conducting ribs 10.

[0108] A thermally conductive material is provided between the sliding block 30 and the sliding track 28 to improve the efficiency of heat transfer.

[0109] In this embodiment, the fixed probe 11 and the sensing probe 27 serve as heat-conducting elements, positioned between the combustion zone and the auxiliary oxygen supply channel. One end of each probe is wedged into the combustion zone of the furnace base 1, while the other end is connected to the auxiliary oxygen supply channel via a conductive structure. The fixed probe 11 is directly connected to the heat-conducting rib 10 for continuous heat conduction during combustion. The sensing probe 27, through the sliding block 30 and the sliding track 28, forms a movable heat transfer assembly, which can be adjusted according to the channel temperature.

[0110] The outer wall of the sliding track 28 is connected to the heat-conducting ribs 10 spirally arranged on the inner wall of the auxiliary oxygen supply channel to form a continuous heat conduction path; the probe conducts the high-temperature heat from the combustion zone to the sliding track 28, and then heats the air in the channel through the heat-conducting ribs 10 to achieve intake preheating.

[0111] By utilizing the waste heat generated during the combustion process of cookware 5 to preheat the air, the mixing temperature and reaction efficiency of the gas and air are effectively improved, enhancing combustion stability and increasing the overall thermal efficiency of the system. Simultaneously, the probe structure and adjustment components work in tandem to achieve adaptive air ratio adjustment, eliminating the need for additional electric heating components. The structure is compact, responsive, and possesses excellent engineering feasibility and energy-saving effects.

[0112] The adjusting roller 25 is hinged to the side wall of the actuating cavity 24 via the connecting rod to form a hinge. During the process of the operator adjusting the adjusting roller 25, the adjusting roller 25 is moved so that the hinge can be raised along the axis of the sensing needle, and the end of the sensing needle near the combustion area is wedged into the combustion area to receive the heat of the sensing needle, while conducting the heat to the heat-conducting rib 10.

[0113] Optionally, the nozzle array control module includes a nozzle 19 adjustment control component, at least two nozzle 19 units disposed on the furnace cavity base 1, and an independently driveable electronically controlled adjustment mechanism 17 associated with the at least two nozzle 19 units. The at least two nozzle 19 units are arranged in a preset array structure to cover multiple heating areas on the bottom of the cookware 5. The nozzle 19 adjustment control component receives the injection strategy output by the evaluation module and, in conjunction with the cookware 5 status data and the target heat load, generates injection direction angle and exhaust intensity control commands for each nozzle 19 unit. The electronically controlled adjustment mechanism 17 receives commands from the corresponding nozzle 19 adjustment control component and drives the connected nozzle 19 units to perform injection direction adjustment and flow control, thereby realizing spatial linkage adjustment of the array nozzles 19 to form a flame configuration adapted to the heat requirements of the cookware 5.

[0114] The nozzle 19 unit includes a fixed gas outlet mesh 23, a connecting pipe 20, a limiting rod 18, a lifting toothed belt, and at least two nozzles 19. The fixed gas outlet mesh 23 has a rotating cavity. One end of the connecting pipe 20 is connected to the gas supply end of the gas supply channel 3, and the other end of the connecting pipe 20 is connected to the nozzle 19. The two ends of the limiting rod 18 are respectively hinged to the inner wall of the rotating cavity to form a turning part 22. At least two nozzles 19 are spaced apart in the middle of the rod body of the limiting rod 18 and connected to the middle of the limiting rod 18. The lifting toothed belt is set on the outer wall of the rod body of the limiting rod 18 to form a meshing part. The meshing part is driven and connected to the electronic control adjustment mechanism 17 so that at least two nozzles 19 rotate with the limiting rod 18.

[0115] like Figure 9 As shown, the electronically controlled adjustment mechanism 17 is located below the fixed air outlet mesh 23 and engages with the meshing part.

[0116] The connecting pipe 20 is configured as a flexible pipe (multi-joint connection structure), such as... Figure 9 As shown, it can be swung in a direction perpendicular to the paper surface, thereby adjusting the spray angle.

[0117] The furnace base 1 is provided with a gas outlet chamber. One end of the gas outlet chamber is connected to the gas supply channel 3, and the other end of the gas outlet chamber extends toward the side away from the gas supply channel 3 and penetrates the upper top wall of the furnace base 1 to form a gas combustion area.

[0118] The gas supply channel 3 is connected to the outside through the air inlet 2, and the air inlet 2 is equipped with a pressure reducing valve (not shown).

[0119] Additionally, external gas enters the gas supply channel 3 through the air inlet 2 and flows along... Figure 4The flow occurs in the x→y→z direction as shown.

[0120] In this embodiment, the fixed gas outlet mesh 23 is configured as a breathable mesh gas hole and covers the gas outlet cavity, so that the gas can smoothly reach the gas combustion area and be burned in the gas combustion area.

[0121] In addition, the fixed air outlet 23 is provided with a movable groove for placing the nozzle 19, and the size of the movable groove is adapted to the range of motion of the nozzle 19.

[0122] Meanwhile, the fixed air outlet net 23 is provided with a fixed probe 11 and a first storage slot and a second storage slot for placing at least one sensing probe 27. For example... Figure 5 As shown, the fixed probe 11 and at least one sensing probe 27 are symmetrically arranged in the first and second storage slots of the fixed air outlet network 23.

[0123] The nozzle 19 adjustment and control component includes a spray strategy parser, a cookware 5 state reference library, a data retriever, an instruction generator, and an output bus interface. The spray strategy parser receives and parses the spray strategy data output by the evaluation module; the cookware 5 state reference library stores the mapping relationship between different cookware 5 parameters and flame configurations; the data retriever retrieves the spray direction angle and exhaust intensity of each nozzle 19 generated by the control strategy unit of the evaluation module; the instruction generator encapsulates the calculation results into drive instructions and distributes them to each electronically controlled adjustment mechanism 17; and the output bus interface sends the instructions to multiple nozzle 19 unit control loops.

[0124] The operating steps of the nozzle adjustment and control component include:

[0125] S41. The injection strategy parser receives the injection strategy information output by the evaluation module, including the heat demand distribution of the cookware heating area, flame offset correction parameters, and nozzle number mapping table.

[0126] S42. The injection strategy parser decodes and standardizes the injection strategy data transmitted from the evaluation module, generating a standardized input vector for the parameter calculator to use, including: a two-dimensional heat load matrix, a cookware eccentricity coordinate vector, and a unit heat compensation value.

[0127] The two-dimensional heat load matrix represents the expected unit heat flux in each area of ​​the bottom of the cookware; the cookware eccentric coordinate vector is used to describe the offset of the cookware's center of gravity relative to the center of the nozzle array, and is used to correct the flame center; the unit heat compensation value is a heat energy adjustment coefficient set according to the cookware material and thermal conductivity, and is used to adjust the output compensation level of different nozzles.

[0128] S43. The jet strategy parser calls the cookware status reference library based on the current cookware status data to obtain the recommended flame configuration template and constraints.

[0129] The constraints include: maximum nozzle deflection angle limit (e.g., ±20°), maximum / minimum flame heat intensity boundary, cookware edge safety protection zone (the jet flame must not extend outside the cookware), cookware bottom temperature difference equalization threshold (i.e., the temperature difference ΔT at the bottom of the cookware must not exceed a set value); and minimum flame interference distance between adjacent nozzles.

[0130] The injection strategy parser extracts recommended flame configuration templates from the cookware state reference library using the following steps:

[0131] 1) The spray strategy parser constructs the cookware state labels, namely the following cookware state parameters:

[0132] Pot shape (bottom shape): flat bottom, curved bottom, convex bottom;

[0133] Material types: aluminum, stainless steel, cast iron, multi-layer composite;

[0134] Overall weight class: light (in this embodiment, it is limited to less than 1kg), medium (1-2kg), heavy (in this embodiment, it is limited to more than 2kg);

[0135] Contact area levels: small (in this embodiment, limited to less than 60% of the chassis), medium (60-85%), large (in this embodiment, limited to more than 85%);

[0136] Degree of center of gravity offset: no offset, slight offset, obvious offset.

[0137] 2) The spray strategy parser discretizes the above parameters to form a tag combination, such as: pot type-material-weight grade-contact area-eccentricity (example: frying pan-aluminum-medium-medium-no eccentricity).

[0138] The state reference library has a preset mapping table of Yuzhang label combinations and template numbers. For example, the template number for flat bottom-aluminum-medium-medium-no eccentricity is FLAME-TYPE-A01; the template number for arc bottom-cast iron-heavy-large-slightly eccentricity is FLAME-TYPE-C07; and the template number for flat bottom-stainless steel-light-small-obviously eccentricity is FLAME-TYPE-B05.

[0139] 3) After the cookware identification is completed, the spray strategy parser will match the real-time generated tag combination with the mapping table:

[0140] If a match is found, the corresponding template is invoked directly.

[0141] If a match fails, the default template is invoked, which is pre-set and stored in the state reference library.

[0142] In addition, in this embodiment, each template number corresponds to a set of flame distribution matrix, preferred nozzle participation unit, power distribution strategy and initial value of deflection angle.

[0143] S44. The data retriever retrieves the injection direction angle and exhaust intensity of each nozzle generated by the control strategy unit of the evaluation module and combines them to form control parameters.

[0144] S45. The instruction generator encapsulates the above control parameters into a control frame, indicating the nozzle number, angle instruction, flow control value, and synchronization bit.

[0145] S46. The output bus interface, according to the nozzle array arrangement, sequentially sends control commands to the corresponding electronic control adjustment mechanism to realize the linkage adjustment of nozzle direction and gas intensity.

[0146] The electronically controlled adjustment mechanism 17 includes an adjustment drive mechanism, a drive gear, an identification probe, and at least two positioning markers. The drive gear is driven to connect with the adjustment drive mechanism to form a drive unit. The drive unit meshes with the toothed belt of the nozzle 19 unit. The at least two positioning markers are arranged on the rotation path of the drive unit and are evenly distributed. The identification probe is arranged on the drive gear and extends toward one side of the at least two positioning markers. When the adjustment drive mechanism rotates, the identification probe identifies the at least two positioning markers in real time and ensures the precise control of the direction of the nozzle 19.

[0147] The electronically controlled adjustment mechanism 17 adjusts the angle of the nozzle 19 unit by regulating the drive mechanism. The specific process is as follows:

[0148] First, the central processing unit sends a target displacement command to the control drive mechanism (preferably a micro stepper motor or servo motor) based on the injection direction angle command generated by the injection strategy. The control drive mechanism drives the drive gear to rotate, and the drive gear, through meshing with the toothed belt structure of the nozzle 19 unit, converts the rotational motion into an angle adjustment of the nozzle 19 direction, thereby realizing a change in the injection direction.

[0149] To ensure the accuracy and controllability of the nozzle 19 unit's steering adjustment, multiple equally spaced positioning markers are pre-installed along the rotation path of the drive gear. The identification probe (e.g., a photoelectric sensor or Hall sensor) is fixed above the drive gear, facing the direction in which the positioning markers are arranged. As the drive gear rotates, the identification probe detects each of the passing positioning markers and feeds back the detection signals to the central processing unit in real time.

[0150] The central processing unit compares the mark count information fed back by the recognition probe with the preset angle mapping relationship to determine whether the current rotation angle of the nozzle 19 has reached the set target value. If it has not reached the target value, it continues to drive the control drive mechanism for fine adjustment. If the target angle has been reached, the central processing unit issues a stop command to complete the precise positioning of the nozzle 19.

[0151] Through the above-mentioned real-time feedback closed-loop control method, high-precision adjustment of the rotation angle of nozzle 19 unit can be achieved, ensuring the linkage and coordination of each nozzle 19 unit in terms of spray direction and intensity, forming a flame configuration that matches the requirements of cookware 5.

[0152] Optionally, the evaluation module includes a data processing unit and a control strategy unit. The data processing unit receives cookware 5 status data, flame heating status data, and flame distribution data from the intelligent detection module. Combining the heat capacity parameters of cookware 5, bottom temperature distribution gradient, and flame coverage area offset, it calculates the target heat load corresponding to cookware 5 based on a preset multi-parameter evaluation model. The control strategy unit generates gas flow and air ratio control commands for the combustion control module based on the target heat load. Combining the flame distribution deviation information, it calculates the injection direction and output intensity parameters of each nozzle 19 unit in the nozzle array control module to achieve adaptive optimization of the flame spatial configuration.

[0153] In this invention, the evaluation module constructs a multi-parameter heat load evaluation model based on the cookware 5's state data, flame coverage area, temperature gradient, and thermal conductivity characteristics, outputting the overall target heat load Qtotal of the cookware 5 as a global control variable for intelligent combustion control. This target heat load, along with the flame deviation correction function and the pot bottom heating uniformity strategy, is transmitted as input to the nozzle 19 adjustment control component in the nozzle array control module. Its subordinate parameter calculator discretizes and distributes the overall heat load according to the heat demand of the pot bottom space, outputting the injection parameters for each nozzle 19.

[0154] The data processing unit calculates the target heat load Q corresponding to the cookware based on the cookware status data, temperature response characteristics, and flame spatial distribution information using the following steps. total :

[0155] S51, Set the current temperature T of different grid areas at the bottom of the pot. current (x,y) and target temperature T target The difference between (x, y) is used to calculate the local temperature rise requirement.

[0156] S52. Calculate the heat load density per unit area q(x,y) of the bottom of the pot at position (x,y) based on the heat capacity of the pot:

[0157]

[0158] In the formula, ρ is the density of the cookware material, in kg / m³. 3 The value of is determined by the infrared material recognition component, which identifies the cookware material type (e.g., aluminum, stainless steel), and then retrieves the corresponding material's physical parameters from a preset material database; C is the specific heat capacity of the cookware material, measured in J / (kg·K), and its value is determined by the infrared material recognition component, which identifies the cookware material type (e.g., aluminum, stainless steel), and then retrieves the corresponding material's physical parameters from a preset material database; d is the pot bottom thickness, measured in meters, and its value is a default thickness value set for a specific pot type (e.g., 2.5mm for aluminum pots, 3.0mm for stainless steel pots, etc.); T target (x,y) represents the desired temperature at position (x,y) of the pot bottom, in °C or K, and its value is set by the control strategy unit; T current (x,y) represents the current temperature at the current position of the bottom of the pot, in °C or K. Its value is obtained from real-time temperature distribution data collected by the distributed thermocouple array or infrared temperature measurement module at the bottom of the pot. Δt represents the heating cycle or unit time interval set for the evaluation, in seconds. Its value is determined by the evaluation module's preset evaluation cycle, such as 1 second or 0.5 seconds, depending on the control frequency and response speed requirements.

[0159] S53. The data processing unit superimposes the heat load density of each grid cell and multiplies it by the grid area A. unit The target total heat load is obtained as follows:

[0160]

[0161] In the formula, Δq(x,y) is the compensating heat flux, used to correct the uneven heating caused by flame coverage deviation; M and N are the number of grids in the pot bottom region along the x and y axes, respectively; A unit The area of ​​the pot bottom grid covered by the nozzle is divided into M×N equal area units, and the area of ​​each unit is [not specified].

[0162] The compensating heat flux is calculated according to the following formula: Δq(x,y)=q(x,y)-q actual (x,y), where q actual (x,y) represents the actual heat flux, which satisfies:

[0163]

[0164] In the formula, P i (x,y) represents the effective thermal power projection value of the flame generated by nozzle unit i at grid point (x,y) on the bottom of the pot. Its magnitude is affected by factors such as nozzle output intensity, flame spatial distribution, and spatial projection relationship with that point. In this embodiment, its value is determined according to the following formula:

[0165]

[0166] In the formula, F i The total jet thermal power of nozzle i; (x i ,y i ) represents the projected coordinates of nozzle i on the bottom plane of the pot; σ is the flame thermal diffusion radius, reflecting the half-width of the flame coverage area, preferably in the range of 8-15mm. In this embodiment, σ is set to 10 by default (this value is the average thermal coverage radius measured through empirical debugging and infrared thermal imaging experiments under typical working conditions of conventional gas stove structure size, nozzle output power, and flame shape, and can better reflect the distribution characteristics of the flame action range under general household stoves); (x,y) are the coordinates of the grid points on the bottom of the pot. η i This represents the heat conversion efficiency of the heat energy projected by nozzle unit i at the corresponding grid point (x, y) on the cookware surface. Its value is affected by factors such as flame concentration, the thermal conductivity of the cookware bottom, and the degree of flame deviation. In this embodiment, η i The value range is 0.65 to 0.85; where the efficiency value is close to the upper limit (e.g., 0.82) when the cookware has a large contact area, good thermal conductivity, and the flame is aimed at the center area; while when the flame is off-center or the heat loss at the edge of the cookware is high, the efficiency can drop to the lower limit (e.g., 0.68). In this embodiment, η is preferably set to... i =0.75, used to simplify the actual nozzle output power P i The estimation and compensation calculation.

[0167] The control strategy unit includes a heat load deterioration distributor, a flame deviation corrector, a gas / air controller, and a parameter calculator. The heat load distributor receives the target heat load Q. total The flame deviation corrector generates compensation instructions based on the actual flame distribution; the gas / air controller outputs drive instructions to control the gas and air flow; and the parameter calculator calculates the injection direction angle and gas output intensity of each nozzle based on the cookware status, target heat load, template number, and injection strategy.

[0168] The gas / air controller in the control strategy unit is used to receive the target heat load parameter Q from the heat load distributor. total Based on the set thermal efficiency parameter η and the lower heating value Hu of the gas, the target gas flow rate F is calculated. gas The calculation formula is as follows:

[0169]

[0170] Meanwhile, the gas / air controller also uses the theoretical air-fuel ratio coefficient λ stoich(Refer to the thermal engineering handbook according to the type of gas used (e.g., natural gas, liquefied petroleum gas, etc.), usually 9.0 to 16.0, depending on the specific composition of the gas source; for example, the λ of natural gas...) stoich ≈9.5 (LPG is approximately 15.5), the set air correction gain α (the air correction gain α is a sensitivity factor used to adjust the air compensation amount, preferably in the range of 0.1 to 0.5; in this embodiment, α = 0.25 is set based on the system's thermal response characteristics), and the flame heat load deviation value ΔQ fed back by the evaluation module. max Calculate the air ratio control quantity A ratio The calculation formula is as follows:

[0171]

[0172] Based on the above calculations, the gas / air controller outputs voltage control commands, stepper drive signals, or PWM modulation signals to the combustion control module to adjust the flow control valve and the oxygen supply electronically controlled air valve, thereby achieving dynamic and precise control of the gas supply and air mixing ratio. This control process works in conjunction with the nozzle injection intensity control to ensure that the flame output meets the actual heat requirements of the cookware.

[0173] The gas / air controller is based on a gas flow target value F. gas Air ratio factor A ratio Generates a gas flow regulation signal U valve The conversion formula is as follows:

[0174]

[0175] In the formula, k v F is the proportional control coefficient for the flow control valve. max This is the maximum designed gas flow rate for the system.

[0176] Among them, the control coefficient k of the proportional electronic flow valve v This signal is used to convert the target gas flow rate Fgas into a drive control signal. Its value is determined based on the response curve of the electronically controlled valve, with a preferred range of 0.5 to 5.0. In this embodiment, kv = 2.0 is selected. This value is obtained through experimental calibration to ensure stable response and linear matching during the flow regulation process.

[0177] Gas flow regulation signal U valve The data is transmitted to the central processing unit, which then controls the flow control valve to improve the regulation of gas flow.

[0178] The nozzle array control module determines the load distribution of each nozzle, and the combustion control module controls the gas-air ratio and flow rate accordingly, resulting in higher overall combustion efficiency, more stable flame output, and gas savings while adapting to the thermal characteristics of different cookware.

[0179] Optionally, the multi-parameter evaluation model is constructed based on the cookware's physical parameters, temperature response characteristics, and the flame's spatial interaction state, and includes the following steps:

[0180] S1. Collect data on the eccentric position of the cookware, the temperature distribution at the bottom, and the flame coverage area;

[0181] S2. Divide the heating area at the bottom of the pot into grid areas and analyze the target temperature rise requirement and the current temperature change rate of each grid area.

[0182] S3. Determine the spatial thermal deviation function by calculating the offset relationship between the flame distribution center and the heat load center of the cookware;

[0183] S4. Output the current target heat load of the cookware based on the total heat deviation, and generate a spatial heat compensation strategy for the nozzle array control module.

[0184] The parameter calculator calculates the injection direction angle (θx, θy) and exhaust intensity of each nozzle one by one based on the cookware condition, target heat load, template number and injection strategy, to ensure that the heat load distribution meets the target requirements.

[0185] The parameter calculator obtains the flame configuration template based on the cookware status label. The template includes the recommended initial direction value (θxbase, θybase) and the basic gas output intensity (Ibase).

[0186] The parameter calculator receives the flame configuration template number, cookware status label and its corresponding structural parameter information output by the injection strategy parser, as well as the target heat load data and heat deviation compensation function output by the evaluation module. Based on the flame configuration definition corresponding to the template number and the heating requirements of the cookware, the parameter calculator calculates the injection direction angle (θx, θy) and exhaust intensity parameters of each nozzle unit one by one to form an injection parameter set that satisfies the heat distribution target and nozzle constraint conditions.

[0187] Specifically: The parameter calculator divides the grid area of ​​the pot bottom covered by the nozzle into M×N equal-area units, each unit having an area of ​​A. unit Each nozzle unit is numbered i, and the set of grids on the bottom of the pot that it sprays over is defined as follows: And calculate the total heat load Q that nozzle i should actually provide. i :

[0188]

[0189] In the formula, x1, x2, y1, y2 are the boundary coordinates of the heating grid corresponding to nozzle i in the x and y directions, respectively (their values ​​are preset in the flame configuration template); Q x,y targetThe target heat flux requirement is given by grid point (x,y) at the bottom of the pot; ΔQ(x,y): the value of the heat deviation compensation function, representing the additional compensation required at this point due to uneven heat distribution; A unit Area of ​​each regional unit;

[0190] The parameter calculator obtains the coordinates of the center of gravity (x) of the cookware. g y g ) and nozzle installation position coordinates (x i y i ), and calculate the nozzle injection angle θ of the i-th nozzle unit. i :

[0191] θ i =k θ ·(y g -y i );

[0192] In the formula, k θ This is the nozzle deflection control coefficient, and its value is based on the following: In the formula, θ max The maximum physically deflectable angle of the nozzle is determined by the nozzle body structure and the limit deflection range of the drive electronic control mechanism; d max In this embodiment, the maximum possible center of gravity shift of the cookware is d. max It is approximately equal to the radius of the edge of the pot support structure from the geometric center.

[0193] The steps for the parameter calculator to calculate the gas intensity parameters are as follows:

[0194] S100, the heat load Q of each nozzle i Mapped to the corresponding control parameters

[0195] In this embodiment, the thermal efficiency η of a single nozzle is constant (set to η = 0.85 in this embodiment), and the heat load is converted into heat power:

[0196]

[0197] In the formula, P i Q is the gas power supplied to the i-th nozzle. i This represents the total heat load that the i-th nozzle should actually provide. In this embodiment, the calorific value of the gas at a single nozzle is H. u (This refers to the effective heat released when a unit volume of gas is completely burned (usually 33-38 J / m³)) 3 (The specific value varies depending on the type of gas), and in this embodiment, it is set to: Hu = 38 J / m³. 3 The required gas flow rate is:

[0198]

[0199] In the formula, F i Let represent the gas flow requirement for the i-th nozzle (in order to achieve the target power P) i The required input is the gas volume flow rate, P. i The power supplied by the gas to the i-th nozzle.

[0200] In this embodiment, each nozzle is equipped with a linear solenoid valve, and the control signal for each linear solenoid valve is U. i (Voltage or PWM) has a linear relationship with flow rate:

[0201] In the formula, U i F represents the airflow intensity control value for the i-th nozzle, typically expressed as an electronic control signal output value (e.g., PWM duty cycle or analog voltage). max U is the maximum design flow rate of the nozzle. max This is the controller's maximum output signal (e.g., 5V (when the control signal is voltage) or 100% duty cycle (when the control signal is PWM)).

[0202] The intelligent detection module monitors the cookware's status, flame status, and heat distribution on the bottom of the pot in real time, transmitting this information to the evaluation module for heat load calculation and thermal deviation identification. This allows the system to dynamically analyze the cookware's current heating needs, generating a targeted target heat load model and significantly improving the accuracy of heat distribution. The evaluation module outputs spatial heat demand and flame compensation strategies, driving the nozzle array control module to calculate and control the injection angle and exhaust intensity of each nozzle. This enables the flame configuration to adaptively change according to the cookware's status, achieving precise control of the spatial thermal field.

[0203] The intelligent detection module provides multi-dimensional sensing of the cookware status, flame coverage, and temperature distribution at the bottom of the pot. The data is transmitted in real time to the evaluation module for cookware heat load assessment and flame deviation analysis. The nozzle array control module then adjusts the injection direction and gas output intensity based on the evaluation results. Simultaneously, the combustion control module dynamically regulates the gas flow rate and air ratio, thus forming a closed-loop adaptive combustion control mechanism. This enables the entire device to dynamically respond to changes in the cookware and precisely control the flame, resulting in high thermal efficiency, strong adaptability, and rapid response.

[0204] The content disclosed above is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of protection of the present invention. Therefore, all equivalent technical changes made based on the content of the present invention specification and drawings are included within the scope of protection of the present invention. Furthermore, the elements therein can be updated as technology develops.

Claims

1. A smart gas stove burner, the smart gas stove burner comprising cookware and a furnace base, characterized in that, The intelligent gas stove burner also includes a combustion control module, a nozzle array control module, an intelligent detection module, and an evaluation module. The combustion control module controls the gas flow rate and air mixing ratio to form an adjustable flame. The nozzle array control module adjusts the flame injection direction and output parameters to achieve directional distribution and configuration reconstruction of the flame in space. The intelligent detection module acquires the cookware status data, the adjustable flame heating status data, and the actual flame distribution data. The evaluation module calculates the target heat load currently required by the cookware based on the cookware status data, adjustable flame heating status data, and actual flame distribution data received from the intelligent detection module, and transmits the target heat load to the combustion control module. Simultaneously, it evaluates the injection strategy of the nozzle array control module and outputs control commands. The intelligent detection module includes a cookware identification and detection unit and a flame distribution detection unit. The cookware identification and detection unit is set on the furnace cavity base and in direct contact with the cookware to obtain the bottom center of gravity offset and material thermal conductivity characteristics of the cookware to form cookware status data. The flame distribution detection unit is set around the flame jet path to obtain heating status data of the adjustable flame. The combustion control module includes a gas supply regulation unit and an air mixing ratio regulation unit. The gas supply regulation unit adjusts the gas flow rate according to the target heat load. The air mixing ratio regulation unit is used to dynamically adjust the mixing ratio of air and gas so that the mixture concentration matches the needs of different combustion stages. The evaluation module includes a data processing unit and a control strategy unit. The data processing unit receives cookware status data, flame heating status data, and flame distribution data from the intelligent detection module. Combining the cookware's heat capacity parameters, bottom temperature distribution gradient, and flame coverage area offset, it calculates the target heat load corresponding to the cookware based on a preset multi-parameter evaluation model. The control strategy unit generates gas flow and air ratio control commands for the combustion control module based on the target heat load. Combining flame distribution deviation information, it calculates the injection direction and output intensity parameters of each nozzle unit in the nozzle array control module to achieve adaptive optimization of the flame spatial configuration. The multi-parameter evaluation model is constructed based on the physical parameters of the cookware, temperature response characteristics, and the spatial action state of the flame, and includes the following steps: S1, collecting the eccentric position of the cookware, the temperature distribution at the bottom, and the flame coverage range; S2. Divide the heating area at the bottom of the pot into grid areas and analyze the target temperature rise requirement and the current temperature change rate of each grid area. S3. Determine the spatial thermal deviation function by calculating the offset relationship between the flame distribution center and the heat load center of the cookware; S4. Output the current target heat load of the cookware based on the total heat deviation, and generate a spatial heat compensation strategy for the nozzle array control module. The cookware identification and detection unit includes a pressure sensing component, a bottom contact area detection component, an infrared material identification component, and a cookware status calculator. The pressure sensing component is disposed on the support surface of the furnace cavity base and senses the vertical pressure distribution at each contact point of the cookware to obtain data on the total mass of the cookware and the offset position of the bottom center of gravity. The bottom contact area detection component is disposed on the contact end surface between the furnace cavity base and the cookware to sense the contact area of ​​the cookware. The infrared material identification component is disposed on the contact end surface between the furnace cavity base and the cookware and obtains the reflectivity or emissivity data of the bottom of the cookware in a specific wavelength band to indirectly obtain the thermal conductivity characteristics of the cookware material. The cookware status calculator receives the results from the pressure sensing component, the bottom contact area detection component, and the infrared material identification component to output the status data of the cookware.

2. The intelligent gas stove burner according to claim 1, characterized in that, The nozzle array control module includes a nozzle adjustment control component, at least two nozzle units disposed on the furnace cavity base, and an independently driveable electronic adjustment mechanism associated with the at least two nozzle units. The at least two nozzle units are arranged in a preset array structure to cover multiple heating areas on the bottom of the cookware. The nozzle adjustment control component is used to receive the injection strategy output by the evaluation module, and, in combination with the cookware status data and the target heat load, generate injection direction angle and gas output intensity control commands for each nozzle unit. The electronically controlled adjustment mechanism is used to receive instructions from the corresponding nozzle adjustment control component and drive the connected nozzle unit to perform injection direction adjustment and flow control, so as to realize the spatial linkage adjustment of the array nozzles and form a flame configuration that adapts to the heat requirements of the cookware.

3. The intelligent gas stove burner according to claim 2, characterized in that, The gas supply regulating unit includes a gas supply channel, a flow control valve, a pressure detection and control valve, and a flow regulating controller. The gas supply channel is disposed on the furnace cavity base and one end of the gas supply channel is externally connected to form a gas supply port. The other end of the gas supply channel passes through the furnace cavity base and extends to the upper surface of the furnace cavity base to form a gas combustion area. The flow control valve is located in the gas supply channel and controls the gas flow rate entering the gas supply port. The pressure detection control valve is installed in the gas supply channel and monitors gas pressure fluctuation data in real time. The flow regulation controller receives the target heat load value from the evaluation module and, in combination with the pressure detection and flow data, outputs a valve regulation voltage or step signal to dynamically control the gas supply of the flow control valve.

4. The intelligent gas stove burner according to claim 3, characterized in that, The air mixing ratio adjustment unit includes a sensing adjustment component, a heat-conducting rib, a fixed probe, at least one sensing probe, and an auxiliary oxygen supply channel nested around the gas supply channel. The sensing adjustment component is disposed on the furnace base and adjusts at least one of the sensing probes. One end of the fixed probe is wedged into the gas combustion area, and the other end of the fixed probe extends into the auxiliary oxygen supply channel and is connected to the heat-conducting rib. The heat-conducting rib is spirally arranged around the inner wall of the auxiliary oxygen supply channel. The auxiliary oxygen supply channel has at least one oxygen supply port on its side wall, and the at least one oxygen supply port is distributed at equal intervals along the side wall of the auxiliary oxygen supply channel.

5. The intelligent gas stove burner according to claim 4, characterized in that, The furnace cavity base has two side walls with actuation chambers, and the induction adjustment component is disposed in the actuation chamber.

6. The intelligent gas stove burner according to claim 5, characterized in that, The induction adjustment assembly includes an adjustment roller, a fixed sleeve, and an adjustment toothed belt. The adjustment roller is hinged to the side wall of the action chamber to form an adjustment part. The adjustment toothed belt is arranged along the outer wall of the induction probe along its length direction. The fixed sleeve is disposed through the furnace base to form a sliding cavity. The induction probe passes through the sliding cavity so that one end of the induction probe can be wedged into the combustion area. The adjusting roller has teeth on the side near at least one sensing needle, and the teeth engage with the adjusting toothed belt.

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