Intelligent gas stove burner

Abstract

The invention relates to the technical field of combustors for combusting gas fuels, and provides an intelligent gas stove combustor which comprises a pot, a stove cavity base, a combustion control module, a nozzle array control module, an intelligent detection module and an evaluation module, the combustion control module is used for controlling the mixing proportion of gas flow and air, and adjustable flames are formed; the nozzle array control module is used for adjusting the spraying direction and output parameters of flames so as to achieve directional distribution of the flames in the space. The intelligent detection module is used for acquiring state data of the cookware, heating state data of the adjustable flame and actual distribution data of the flame; the evaluation module is used for receiving the state data of the cookware, the heating state data of the adjustable flame and the actual flame distribution data provided by the intelligent detection module, calculating a target heat load currently required by the cookware, and transmitting the target heat load to the combustion control module; meanwhile, the injection strategy of the nozzle array control module is evaluated, and a control instruction is output.

Description

Technical Field

[0001] The present invention relates to the technical field of burners for burning gas fuel, and in particular to an intelligent gas stove burner. Background Art

[0002] The traditional gas stove burner structure generally adopts a fixed nozzle and static flame configuration. Although it can achieve basic combustion functions under standardized cookware and stable gas source conditions, in actual applications, due to the diverse types of cookware, flexible usage methods, air pressure fluctuations, environmental disturbances and other factors, it often leads to uneven fire distribution, low thermal energy utilization, insufficient or overheating of local heating, flame drift, and even backfire, which seriously affect cooking efficiency and safety of use.

[0003] For example, Chinese patent CN2742292Y discloses a gas nozzle with adjustable combustion direction. This nozzle outlet direction is adjustable primarily through mechanical structure to accommodate different heating requirements. While this solution provides a certain degree of flexibility in flame direction at the structural level, its technical implementation still has the following prominent drawbacks:

[0004] 1) The flame direction is adjusted by mechanical rotation control of a single-point nozzle, lacking an array and linkage structural design, making it impossible to achieve spatially customized allocation of the firepower across the entire bottom of the pot;

[0005] 2) There is no intelligent recognition mechanism and it cannot identify the size, material or heating status of the cookware. Flame adjustment relies on manual judgment and operation, which leads to a poor user experience.

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

[0007] 4) The safety monitoring module is not integrated, and rapid protection actions cannot be performed in the event of abnormal combustion or gas source fluctuations, which poses a risk of use.

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

[0009] 1. The nozzle structure generally has a fixed angle and fixed distribution, which makes it difficult to achieve adaptive adjustment of the flame pattern according to the actual state of the cookware;

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

[0011] 3. Most control strategies are based on traditional mechanical / electronic control switching and lack dynamic ignition control logic supported by intelligent algorithms;

[0012] The present invention is made in order to solve the common problems in this field, such as fixed flame configuration, rigid adjustment method, poor cookware matching, insufficient perception ability, slow control response and weak safety protection. Summary of the Invention

[0013] The purpose of the present invention is to address the current deficiencies and provide an intelligent gas stove burner.

[0014] In order to overcome the deficiencies of the prior art, the present invention adopts the following technical solutions:

[0015] An intelligent gas stove burner, comprising a cooker and a furnace base, and further comprising a combustion control module, a nozzle array control module, an intelligent detection module, and an evaluation module. The combustion control module is configured 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 injection direction and output parameters of the flame to achieve the directional distribution and configuration reconstruction of the flame in space;

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

[0018] The evaluation module calculates the target heat load currently required by the cookware based on the cookware status data, the heating status data of the adjustable flame, and the actual flame distribution data provided by 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 a control instruction;

[0019] Among them, the intelligent detection module includes a pot identification and detection unit and a flame distribution detection unit. The pot identification and detection unit is arranged on the base of the furnace cavity and is in direct contact with the pot to obtain the center of gravity deviation of the bottom of the pot and the thermal conductivity characteristics of the material to form the status data of the pot; the flame distribution detection unit is arranged around the flame injection path to obtain the 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 arranged on the furnace chamber base, and an independently drivable electrically controlled adjustment mechanism equipped with at least two of the nozzle units, and at least two of the nozzle units are arranged according to a preset array structure to cover multiple heating areas at the bottom of the cookware; the nozzle adjustment control component is used to receive the injection strategy output by the evaluation module, and generate injection direction angle and gas outlet intensity control instructions for each nozzle unit in combination with the cookware status data and the target heat load; the electrically 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 spatial linkage adjustment of the array nozzle to form a flame configuration that adapts to the thermal requirements of the cookware.

[0021] Optionally, the combustion control module includes a gas supply regulating unit and an air mixing ratio regulating unit, wherein the gas supply regulating unit regulates the gas flow according to the target heat load; the air mixing ratio regulating unit is used to dynamically adjust the mixing ratio of air and gas so that the concentration of the mixed gas matches the requirements of different combustion stages.

[0022] Optionally, the evaluation module includes a data processing unit and a control strategy unit, the data processing unit is used to receive the cookware status data, flame heating status data and flame distribution data from the intelligent detection module, and calculate the current target heat load corresponding to the cookware based on a preset multi-parameter evaluation model in combination with the heat capacity parameters, bottom temperature distribution gradient and offset of the flame coverage area of ​​the cookware; the control strategy unit generates gas flow and air ratio control instructions for the combustion control module according to the target heat load, and calculates the injection direction and output intensity parameters of each nozzle unit in the nozzle array control module in combination with the flame distribution deviation information to achieve adaptive optimization of the flame space configuration.

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

[0024] S1. Collect the eccentric position, bottom temperature distribution and flame coverage of the pot;

[0025] S2. Divide the pot bottom heating area into grid areas and analyze the target temperature rise requirement and 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 pot heat load center;

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

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

[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, wherein the gas supply channel is provided on the furnace cavity base and one end of the gas supply channel is connected to the outside to form a gas supply port, and the other end of the gas supply channel passes through the furnace cavity base and extends to the upper end surface of the furnace cavity base to form a gas combustion area;

[0030] The flow control valve is arranged in the gas supply channel and controls the gas flow entering the gas supply port. The pressure detection valve is installed in the gas supply channel and monitors the gas pressure fluctuation data in real time. The flow regulation controller receives the target thermal load value from the evaluation module and combines the pressure detection and flow data to output a valve regulation voltage or step signal to dynamically control the gas supply amount of the flow control valve.

[0031] Optionally, the air mixing ratio adjustment unit includes an induction adjustment component, a heat-conducting rib, a fixed probe, at least one induction probe, and an outer periphery of an auxiliary oxygen supply channel nested in the gas supply channel, the induction adjustment component is arranged on the furnace cavity base, and adjusts at least one of the induction 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, and the heat-conducting rib is spirally arranged along the inner wall of the auxiliary oxygen supply channel;

[0032] Wherein, the side wall of the auxiliary oxygen supply channel is provided with at least one oxygen supply port, 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, two side walls of the furnace cavity base are provided with action cavities, and the induction adjustment component is arranged in the action cavity.

[0034] Optionally, the induction adjustment assembly includes an adjustment roller, a fixing sleeve, and an adjustment toothed belt, the adjustment roller being hinged to a side wall of the action chamber to form an adjustment portion, the adjustment toothed belt being arranged along an outer wall in a lengthwise direction of the induction probe, the fixing sleeve being arranged through the furnace chamber base to form a sliding cavity, the induction probe being inserted through the sliding cavity so that one end of the induction probe can be wedged into the combustion area;

[0035] Wherein, teeth are provided on a side of the adjusting roller close to at least one sensing needle, and the teeth are engaged with the adjusting toothed belt.

[0036] The beneficial effects achieved by the present invention are:

[0037] 1. 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, making the overall combustion efficiency higher and the flame output more stable, adapting to the thermal characteristics of different cookware while achieving gas conservation;

[0038] 2. The intelligent detection module provides real-time perception of the pot status, flame state, and heat distribution at the pot bottom, and transmits this information to the evaluation module for heat load calculation and thermal deviation identification. This enables the system to dynamically analyze the pot's current heating needs, forming a targeted target heat load model and significantly improving heat distribution accuracy.

[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 spray angle and gas output intensity of each nozzle in a coordinated manner. This allows the flame configuration to adapt to the state of the cookware, achieving refined control of the spatial thermal field.

[0040] 4. The intelligent detection module performs multi-dimensional perception of the pot status, flame coverage, and bottom temperature distribution, and transmits the data in real time to the evaluation module for pot thermal load assessment and flame offset analysis. The nozzle array control module further adjusts the injection direction and gas intensity based on the evaluation results, and cooperates with the combustion control module to dynamically adjust the gas flow and air ratio, thereby forming a closed-loop adaptive combustion control mechanism. This enables the entire device to dynamically respond to changes in the pot and accurately control the fire, with the advantages of high thermal efficiency, strong adaptability, and rapid response. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0043] Figure 2 It is an overall block diagram of the present invention.

[0044] Figure 3 Schematic diagram of the intelligent detection module of the present invention.

[0045] Figure 4 for Figure 1 Schematic cross-sectional view at AA in the middle.

[0046] Figure 5 for Figure 1 Schematic cross-sectional view at the middle BB.

[0047] Figure 6 for Figure 4 Enlarged schematic diagram of part C in the middle.

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

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

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

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

[0052] Explanation of the accompanying symbols: 1. furnace chamber base; 2. air inlet nozzle; 3. gas supply channel; 4. flow control valve; 5. pot; 6. stove; 7. action chamber; 8. oxygen supply port; 9. shape memory alloy deformation plate; 10. heat conductive rib; 11. fixed probe; 12. infrared emission component; 13. infrared receiving component; 14. transmission block; 15. conduction spring; 16. piezoelectric sensor; 17. electric control adjustment mechanism; 18. limit rod; 19. nozzle; 20. connecting pipe; 21. fixed sleeve; 22. steering part; 23. fixed air outlet net; 24. action chamber; 25. adjustment roller; 26. adjustment toothed belt; 27. induction probe; 28. sliding track; 29. ​​conduction rod; 30. sliding block; 31. linear solenoid valve; 32. infrared optical sensor. DETAILED DESCRIPTION

[0053] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted in actual size. It is stated in advance. The following embodiments will further explain 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 cooker 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 and air mixing ratio to form an adjustable flame.

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

[0056] The intelligent detection module is used to obtain the status data of the 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, transmits the target heat load to the combustion control module, and evaluates the injection strategy of the nozzle array control module and outputs a control instruction.

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

[0059] Among them, the intelligent detection module includes a pot 5 identification and detection unit and a flame distribution detection unit. The pot 5 identification and detection unit is arranged on the furnace cavity base 1 and is in direct contact with the pot 5 to obtain the bottom center of gravity deviation and material thermal conductivity characteristics of the pot 5 to form the status data of the pot 5; the flame distribution detection unit is arranged around the flame injection path to obtain the heating status data of the adjustable flame.

[0060] The flame distribution detection unit includes a plurality of infrared optical sensors 32 arranged around the flame injection path to collect thermal radiation or temperature signals at different spatial positions in the flame area in real time to obtain the actual distribution state of the flame heating area.

[0061] The infrared optical sensor 32 is preferably a thermopile sensor that is sensitive to the mid-infrared band and can detect the radiation intensity of the flame without contacting it;

[0062] In this embodiment, the optical sensors are distributed on the oven cavity base 1 and the hob 6 to form a spatially distributed array to collect flame heating status data in real time. Optionally, the pot 5 identification and detection unit includes a pressure sensing component, an infrared material identification component, and a pot 5 status calculator. The pressure sensing component is disposed on each support frame of the oven cavity base 1 and the hob 6 and senses the vertical pressure distribution at each contact point of the pot 5 to obtain data on the total mass of the pot 5 and the offset position of the bottom center of gravity; the infrared material identification component is disposed on the contact end surface between the oven cavity base 1 and the pot 5 and obtains reflectivity or emissivity data of the bottom of the pot 5 in a specific wavelength band to indirectly obtain the thermal conductivity characteristics of the material of the pot 5; the pot 5 status calculator receives the results of the pressure sensing component and the infrared material identification component to output the status data of the pot 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 hob 6, and is used to sense the vertical mechanical pressure of each contact point when the pot 5 is placed, and convert 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 performs signal amplification processing on 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 conduction spring 15, and a conduction cavity arranged in the hob 6. The piezoelectric sensor 16 is arranged on the bottom wall of the conduction cavity. One end of the conduction spring 15 is connected to the lower end wall of the transmission block 14, and the other end of the conduction spring 15 rests on the piezoelectric sensor 16, so that the conduction spring 15 can conduct the vertical pressure data of the pot 5 to the piezoelectric sensor 16 and ensure that the vertical pressure data of the pot 5 is collected by the piezoelectric sensor 16.

[0065] like Figure 4 As shown, after the pot 5 is placed on the hob 6 , the weight of the pot 5 is directly transmitted to the transmission block 14 , and the vertical data is transmitted to the piezoelectric sensor 16 through the conduction of the conduction 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) toward the bottom of the pot 5 after it is placed, thereby exciting the surface of the pot 5 to generate a reflection signal. The infrared emitting component 12 includes a mid-infrared band LED array or a quantum cascade laser. The infrared receiving component 13 is arranged on the inner wall of the oven cavity opposite to the bottom of the pot 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] 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 is composed of a dual operational amplifier, which receives the differential output signal of the infrared receiving component 13 and performs common-mode interference suppression and primary amplification processing; the gain adjustment amplifier is composed of an operational amplifier, a feedback resistor and an adjustable potentiometer, and is used to dynamically set the voltage gain according to the actual infrared reflection signal strength. The gain factor is: Where G is the voltage gain of the amplifier (dimensionless), which represents the ratio of the output voltage to the input voltage; R f It is a feedback resistor connected between the output and negative input of the operational amplifier to control the feedback amount; R inThe input resistor is connected between the input signal and the negative input of the operational amplifier to set the impedance of the input channel. The above parameters need to be reasonably selected and adjusted based on factors such as the target gain, circuit environment, and noise tolerance. In this embodiment, they are not further described.

[0068] The RC low-pass filter network is connected to the output end of the gain amplifier and is composed of a limiting resistor and a filter capacitor in series. The cut-off frequency f c : Where R is the resistance value, usually the limiting resistor or load resistor in the filter circuit. C is the capacitance value, which is 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). Wherein, the cut-off frequency f c Used to filter out high-frequency electromagnetic interference;

[0069] The sampling and holding unit is composed of a sampling and holding chip (such as LF398), which collects 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 data received by the infrared transmitting component and the infrared receiving component are subjected to amplitude enhancement and high-frequency noise filtering by the signal conditioning circuit. The method of improving the signal-to-noise ratio is a conventional technical means. Those skilled in the art can obtain this technology according to relevant technical manuals and implement it. This is a technical means well known to those skilled in the art, and therefore, it will not be described in detail in this embodiment.

[0071] The material identification processor is used to identify and analyze the infrared reflection characteristics of the bottom material of the cookware, and then determine its thermal conductivity parameter. Specifically, the material identification processor identifies the cookware and determines the thermal conductivity parameter of the cookware 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 in the form of a set of time-series digital voltage values ​​in a set band (such as 8–12 μm).

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

[0074] S33. Calculate the average reflectivity R of the normalized sequence avg , as an optical characteristic indicator of cookware materials.

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

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

[0077] S34, extract the R avg Minimum Euclidean distance matching with a locally stored database of material properties:

[0078]

[0079] Where R i ref is the standard reflectivity of the i-th material in the same band.

[0080] S35. Output the corresponding material type (such as "aluminum", "stainless steel", "cast iron", etc.) according to the most matching material number, and call the heat conduction parameter of the material in the database.

[0081] S36. Output the heat conduction parameters corresponding to the material, including thermal conductivity k, thermal diffusion coefficient α, and specific heat capacity C. The heat conduction parameters are transmitted to the evaluation module for use in calculating the target heat load of the cookware.

[0082] For example: When the average infrared reflection value is R avg =0.16, matching the standard reflectivity range (0.15-0.18) of stainless steel cookware in the database, the cookware is identified as stainless steel, and its corresponding thermal conductivity k=16.2W / (m·K) is called and transmitted to the evaluation module to participate in the calculation of the target heat load of the cookware.

[0083] The cookware state calculator receives the results of the pressure sensing component, the pot bottom contact range detection component, and the infrared material recognition component, and calculates the estimated mass M of the cookware:

[0084]

[0085] Where, P i is the vertical pressure value output by each piezoelectric sensor element, n is the total number of sensors distributed on the support points of the grate in the piezoelectric sensor assembly, and g is the standard gravity acceleration constant, which is approximately 9.8m / s 2 .

[0086] At the same time, the pot state calculator calculates the position coordinates of the center of gravity of the pot bottom (x g ,y g ):

[0087]

[0088] Where M is the estimated mass of the cookware, P i is the vertical pressure value output by each piezoelectric sensor element, n is the total number of sensors distributed on the support points of the grate in the piezoelectric sensor assembly, and g is the standard gravity acceleration constant, which is approximately 9.8m / s 2 .

[0089] The cookware status calculator will R avg Compare with the material database to identify the type of cookware material; output the corresponding thermal conductivity k, thermal diffusivity α, and specific heat capacity C;

[0090] The cookware state calculator constructs a state data packet State:

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

[0092] The cookware state calculator transmits the state data packet State to the data processing unit of the evaluation module through the bus.

[0093] Optionally, the combustion control module includes a gas supply regulating unit and an air mixing ratio regulating unit. The gas supply regulating unit regulates the gas flow rate according to the target heat load to provide basic heat source control. The air mixing ratio regulating unit is used to dynamically adjust the mixing ratio of air and gas so that the concentration of the mixed gas matches the requirements 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, wherein the gas supply channel 3 is provided on the furnace cavity base 1 and one end of the gas supply channel 3 is connected to the outside to form a gas supply port, and the other end of the gas supply channel 3 passes through the furnace cavity base 1 and extends to the upper end surface of the furnace cavity base 1 to form a gas combustion area;

[0095] The flow control valve 4 is arranged in the gas supply channel 3 and controls the gas flow 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 thermal load value from the evaluation module, and combines the pressure detection and flow data to output a valve adjustment voltage or step signal to dynamically control the gas supply amount of the flow control valve 4.

[0096] Specifically, the flow regulating controller is arranged in the control module area inside or near the furnace chamber base 1, and is electrically connected to the flow control valve 4 and the pressure detection control valve through a wire; the flow regulating controller receives the target heat load value output by the evaluation module, and outputs a control signal (voltage or step signal) to the flow control valve 4 in combination with the real-time pressure data provided by the pressure detection control valve, thereby realizing dynamic adjustment of the gas supply amount. 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 the periphery of the auxiliary oxygen supply channel nested in the gas supply channel 3, the induction adjustment component is arranged on the furnace chamber 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, and the heat-conducting rib 10 is spirally arranged along the inner wall of the auxiliary oxygen supply channel;

[0097] The auxiliary oxygen supply channel has at least one oxygen supply port 8 disposed on its sidewall, and the at least one oxygen supply port 8 is evenly spaced along the auxiliary oxygen supply channel. Optionally, the furnace chamber base 1 has two side walls provided with actuating cavities 24, and the inductive adjustment assembly is disposed within the actuating cavities 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 of the shape memory alloy deformable sheet 9 extends toward the top of the oxygen supply port 8 to linearly change the opening and closing state of the oxygen supply port 8 according to the heat conducted in the combustion area. 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 area can be transferred to the shape memory alloy deformable sheet 9 along the heat conducting rib 10, driving it to complete the shape change. Figure 4 As shown, external oxygen enters the oxygen supply port 8 along the direction of route a→b and enters the auxiliary oxygen supply channel.

[0099] Specifically, the heat-conducting ribs 10 are spirally arranged along the inner wall of the auxiliary oxygen supply channel and are directly connected to the back of the shape memory alloy deformable sheet 9 provided on the side wall of the oxygen supply port 8, forming a heat conduction path. When the heat in the combustion zone increases during the heating process of the pot 5, it is transmitted to the heat-conducting ribs 10 via the fixed probe 11, the induction needle and the sliding track 28, and then further transmitted to the shape memory alloy deformable sheet 9. After reaching the set transformation temperature (set to 120°C in this embodiment), the shape memory alloy deformable sheet 9 transforms from the martensite phase to the austenite phase and returns to the preset bending shape, thereby driving the tongue plate to open the oxygen supply port 8, increasing the auxiliary oxygen supply and improving the combustion efficiency.

[0100] When the temperature drops, the shape memory alloy deformable piece 9 returns to its initial state due to its material properties, driving the adjustment of the opening of the shape memory alloy deformable piece 9 to achieve passive self-regulation.

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

[0102] Optionally, the induction adjustment assembly includes an adjustment roller 25, a fixed sleeve 21, and an adjustment toothed belt 26. The adjustment roller 25 is hinged to the side wall of the action chamber 24 to form an adjustment portion. The adjustment toothed belt 26 is arranged along the outer wall of the induction probe 27 in the length direction. The fixed sleeve 21 is arranged through the furnace chamber base 1 to form a sliding cavity. The induction probe 27 passes through the sliding cavity so that one end of the induction probe 27 can be wedged into the combustion area.

[0103] The adjusting roller 25 is provided with teeth on a side close to at least one sensing needle, and the teeth are engaged with the adjusting toothed belt 26 .

[0104] Wherein, the isolation sleeve isolates 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 body and are arranged on the outer wall surface of the sensing needle.

[0106] like Figure 10 As shown, the induction adjustment assembly further includes a sliding block 30, a conduction rod 29, and a sliding track 28 provided in the auxiliary oxygen supply channel. One end of the conduction rod 29 is connected to the sliding block 30, and the other end of the conduction rod 29 is connected to the end of the induction needle away from the combustion area to form an L-shaped sliding portion. The sliding block 30 is slidably connected to the sliding track 28 and transfers the heat conducted by the conduction 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 transfer channel.

[0107] like Figure 10 As shown, the heat-conducting ribs 10 are spirally arranged on 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 heat-conducting material is provided between the sliding block 30 and the sliding track 28 to improve the efficiency of heat transfer.

[0109] In this embodiment, a fixed probe 11 and a sensing probe 27 serve as heat transfer elements, positioned between the combustion zone and the auxiliary oxygen supply channel. One end of the 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 to continuously transfer combustion heat. The sensing probe 27, through a sliding block 30 and a sliding track 28, forms a movable heat transfer component, which can be adjusted in response to the channel temperature.

[0110] The outer wall of the sliding track 28 is connected to the spirally arranged heat-conducting ribs 10 on the inner wall of the auxiliary oxygen supply channel to form a continuous heat conduction path; the probe conducts the high-temperature heat of 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 air preheating.

[0111] The waste heat generated by the combustion process in the cooker 5 is used to preheat the air, effectively increasing the mixing temperature and reaction efficiency of the gas and air, enhancing combustion stability and improving the overall thermal efficiency of the system. Furthermore, the probe structure and the adjustment component are linked to achieve adaptive air ratio adjustment, eliminating the need for additional electrical heating components. This compact structure and responsive response offer excellent engineering feasibility and energy-saving benefits.

[0112] The adjusting roller 25 is hinged to the side wall of the action chamber 24 through the connecting rod to form a hinged portion. When the operator adjusts the adjusting roller 25, the adjusting roller 25 is turned so that the hinged portion can be lifted along the axial direction of the sensing needle, and the end of the sensing needle close to the combustion area is wedged into the combustion area, and receives the heat of the sensing needle, and at the same time conducts the heat to the thermal rib 10.

[0113] Optionally, the nozzle array control module includes a nozzle 19 adjustment control component, at least two nozzle 19 units arranged on the furnace chamber base 1, and an independently drivable electric control adjustment mechanism 17 equipped with at least two of the nozzle 19 units, and at least two of the nozzle 19 units are arranged according to a preset array structure to cover multiple heating areas at the bottom of the pot 5; the nozzle 19 adjustment control component is used to receive the injection strategy output by the evaluation module, and combine the pot 5 status data and the target heat load to generate the injection direction angle and gas outlet intensity control instructions of each nozzle 19 unit; the electric control adjustment mechanism 17 is used to receive the instructions of the corresponding nozzle 19 adjustment control component, and drive the connected nozzle 19 units to perform injection direction adjustment and flow control, so as to realize the spatial linkage adjustment of the array nozzle 19 to form a flame configuration that adapts to the thermal requirements of the pot 5.

[0114] The nozzle 19 unit includes a fixed air outlet net 23, a connecting pipe 20, a limiting rod 18, a lifting toothed belt, and at least two nozzles 19. A rotating chamber is provided in the fixed air outlet net 23. One end of the connecting pipe 20 is connected to one end of the connecting pipe 20 and is connected to the gas supply end of the gas supply channel 3. 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 chamber to form a turning portion 22. At least two nozzles 19 are spaced apart in the middle of the rod body of the limiting rod 18 and are connected to the middle of the limiting rod 18. The lifting toothed belt is arranged on the outer wall of the rod body of the limiting rod 18 to form an engaging portion. The engaging portion is driven and connected to the electrically controlled adjustment mechanism 17 so that at least two nozzles 19 rotate following the limiting rod 18.

[0115] like Figure 9 As shown, the electric control adjustment mechanism 17 is arranged below the fixed air outlet net 23 and engages with the engaging portion.

[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 to adjust the spray angle.

[0117] The furnace cavity base 1 is provided with an air outlet cavity, one end of which is connected to the interior of the gas supply channel 3, and the other end of the air outlet cavity extends toward a side away from the gas supply channel 3 and passes through the upper top wall of the furnace cavity base 1 to form a gas combustion area.

[0118] The gas supply channel 3 is connected to the outside through the gas inlet nozzle 2. At the same time, a pressure reducing valve (not shown) is provided inside the gas inlet nozzle 2.

[0119] In addition, external gas enters the gas supply channel 3 through the gas inlet nozzle 2 and flows along the Figure 4The flow is in the x→y→z direction shown.

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

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

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

[0123] The nozzle 19 adjustment control component includes an injection strategy parser, a pot 5 state reference library, a data retriever, an instruction generator and an output bus interface. The injection strategy parser receives and parses the injection strategy data output by the evaluation module; the pot 5 state reference library stores the mapping relationship between different pot 5 parameters and flame configurations; the data retriever retrieves the injection direction angle and gas outlet 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 electronic control adjustment mechanism 17; the output bus interface sends the instructions to multiple nozzle 19 unit control loops.

[0124] The working steps of the nozzle adjustment control assembly include:

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

[0126] S42, the injection strategy parser decodes and normalizes the injection strategy data transmitted by the evaluation module to generate a standardized input vector for the parameter calculator to call, 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 unit heat flux expected to be achieved 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, which is used to correct the flame center; the unit heat compensation value is used to adjust the heat energy adjustment coefficient set according to the cookware material and thermal conductivity, which is used to adjust the output compensation level of different nozzles;

[0128] S43, the injection strategy parser calls the cookware state reference library based on the current cookware state data to obtain the recommended flame configuration template and constraint conditions;

[0129] Among them, the constraints include: maximum nozzle deflection angle limit (such as ±20°), maximum / minimum flame heat intensity boundary, pot edge safety protection zone (the jet flame must not extend outside the pot), pot bottom temperature difference balance threshold (that is, the temperature difference ΔT at the bottom of the pot cannot exceed the set value); minimum flame interference distance between adjacent nozzles.

[0130] The injection strategy parser uses the following steps to extract the recommended flame configuration template from the cookware state reference library:

[0131] 1) The injection strategy parser constructs the pot status label, which is the following pot status parameters:

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

[0133] Material type: aluminum, stainless steel, cast iron, composite multilayer;

[0134] Total mass level: light (in this embodiment, limited to less than 1 kg), medium (1-2 kg), heavy (in this embodiment, limited to more than 2 kg);

[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 shift: no eccentricity, slight eccentricity, obvious eccentricity.

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

[0138] The state reference library presets the Yuzhang label combination and template number mapping table, for example: the template number of flat bottom-aluminum-medium-medium-no eccentricity is: FLAME-TYPE-A01; the template number of arc bottom-cast iron-heavy-large-slightly eccentric is: FLAME-TYPE-C07; the template number of flat bottom-stainless steel-light-small-obvious eccentricity is: FLAME-TYPE-B05.

[0139] 3) After the pot is identified, the injection strategy parser matches the tag combination generated in real time with the mapping table:

[0140] If the match is successful, the corresponding template is called directly;

[0141] If the match fails, the default template is called, where the default template is preset 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 participating unit, power distribution strategy and deflection angle initial value.

[0143] S44, the data retriever retrieves the spray direction angle and the air outlet intensity of each nozzle generated by the control strategy unit of the evaluation module and combines them to form a control parameter;

[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 sends control instructions to the corresponding electronic control adjustment mechanism in sequence according to the nozzle array arrangement, so as to realize the linkage adjustment of nozzle steering and gas intensity.

[0146] The electrically controlled adjustment mechanism 17 includes a control drive mechanism, a drive gear, an identification probe, and at least two positioning marking members. The drive gear is connected to the control drive mechanism to form a drive unit, and the drive unit is engaged with the toothed belt of the nozzle 19 unit. At least two positioning marking members are arranged on the rotation path of the drive unit and are distributed at equal intervals. The identification probe is arranged on the drive gear and extends toward one side of at least two positioning marking members. When the control drive mechanism rotates, the identification probe identifies at least two positioning marking members in real time and ensures precise control of the steering of the nozzle 19.

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

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

[0149] To ensure precise and controllable steering adjustment of the nozzle unit 19, multiple equally spaced positioning markers are pre-set along the rotational path of the drive gear. An identification probe (such as a photoelectric identifier or Hall effect sensor) is fixed above the drive gear, facing the direction of the positioning markers. As the drive gear rotates, the identification probe detects each positioning marker it passes by and feeds the detection signal back to the central processing unit in real time.

[0150] The central processing unit compares the mark counting information fed back by the identification probe with the preset angle mapping relationship to determine whether the current rotation angle of the nozzle 19 reaches the set target value; if not, the control drive mechanism continues to be driven for fine-tuning; if the target angle has been reached, the central processing unit issues a stop command to complete the precise positioning of the direction of the nozzle 19.

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

[0152] Optionally, the evaluation module includes a data processing unit and a control strategy unit, the data processing unit is used to receive the pot 5 status data, flame heating status data and flame distribution data from the intelligent detection module, and calculate the current target heat load corresponding to the pot 5 based on a preset multi-parameter evaluation model in combination with the heat capacity parameters, bottom temperature distribution gradient and offset of the flame coverage area of ​​the pot 5; the control strategy unit generates gas flow and air ratio control instructions for the combustion control module according to the target heat load, and calculates the injection direction and output intensity parameters of each nozzle 19 unit in the nozzle array control module in combination with the flame distribution deviation information to achieve adaptive optimization of the flame space configuration.

[0153] In the present invention, the evaluation module constructs a multi-parameter heat load assessment model based on the pot 5 status data, flame coverage area, temperature gradient, and thermal conductivity. This model outputs the overall target heat load Qtotal of the pot 5, which serves as the global control variable for intelligent combustion control. This target heat load, along with a flame deviation correction function and a pot bottom heating uniformity strategy, is passed as input to the nozzle 19 adjustment control component in the nozzle array control module. This parameter calculator discretizes the overall heat load based on the heat demand of the pot bottom space and outputs the injection parameters for each nozzle 19.

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

[0155] S51, 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 pot bottom at position (x,y) based on the heat capacity of the pot:

[0157]

[0158] Where ρ is the density of the cookware material, in kg / m 3 , its value is determined by the infrared material recognition component to identify the type of cookware material (such as aluminum, stainless steel, etc.), and then the physical parameters of the corresponding material are searched from the preset material database; C is the specific heat capacity of the cookware material, in J / (kg·K), its value is determined by the infrared material recognition component to identify the type of cookware material (such as aluminum, stainless steel, etc.), and then the physical parameters of the corresponding material are searched from the preset material database; d is the thickness of the pot bottom, in m, and its value is the default thickness value set for a specific pot type (such as 2.5mm for aluminum pots and 3.0mm for stainless steel pots, etc.); T target (x, y) is the desired temperature of the pot bottom at position (x, y), in °C or K, and its value is set by the control strategy unit; T current (x, y) is the current temperature of the pot bottom at the current position, in °C or K. Its value is the real-time temperature distribution data collected by the distributed thermocouple array or infrared temperature measurement module at the pot bottom. Δt is the heating cycle or unit time interval set for evaluation, in seconds. Its value is preset by the evaluation module, such as 1 second or 0.5 second, depending on the control frequency and response speed requirements.

[0159] S53, the data processing unit adds up the heat load density of each grid unit and multiplies it by the grid area A unit , and get the total target heat load value:

[0160]

[0161] Where Δq(x,y) is the compensation heat flux, which is used to correct the uneven heating caused by the flame coverage deviation; M, N are the number of grids in the pot bottom area in the x-axis and y-axis directions, and A unit The grid area of ​​the pot bottom covered by the nozzle is divided into M×N equal-area area units, each unit area.

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

[0163]

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

[0165]

[0166] Where, F i is the total injection thermal power of nozzle i; (x i ,y i ) is the projection coordinate of nozzle i on the pan bottom plane; σ is the flame heat diffusion radius, reflecting the half-width of the flame coverage range, preferably in the range of 8 to 15 mm. In this embodiment, the default setting is σ = 10 (this value is the average heat coverage radius measured through empirical debugging and infrared thermal imaging experiments under typical operating conditions of conventional gas stove structure dimensions, nozzle output power, and flame shape, and can well reflect the distribution characteristics of the flame coverage range of general household stoves); (x, y) are the coordinates of the grid points on the pan bottom. η i It represents the heat conversion efficiency of the heat energy projected by the nozzle unit i at the corresponding grid point (x, y) on the surface of the pot. Its value is affected by factors such as the flame concentration, the thermal conductivity of the pot bottom, and the degree of flame deviation. In this embodiment, η i The value range of η is: 0.65~0.85; among them, when the contact area of ​​the pot is large, the thermal conductivity is good, and the flame is aimed at the center area, the efficiency value is close to the upper limit (such as 0.82); when the flame deviates from the center or the heat loss at the edge of the pot is high, the efficiency can drop to the lower limit (such as 0.68). In this embodiment, it is preferred to set η i =0.75, used to simplify the actual nozzle output power P i 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 , and distributed by area; the flame deviation corrector generates compensation instructions according to the actual distribution of the flame; the gas / air controller outputs driving instructions for controlling the gas and air flow; the parameter calculator calculates the injection direction angle and air outlet intensity of each nozzle according to the pot state, 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 , and calculate the target gas flow F according to the set thermal efficiency parameter η and the low calorific value Hu of the gas gas , and its calculation formula is:

[0169]

[0170] At the same time, the gas / air controller also calculates the theoretical air-fuel ratio coefficient λ stoich(Refer to the thermal engineering manual according to the type of gas used (such as natural gas, liquefied petroleum gas, etc.), usually 9.0 to 16.0, depending on the specific composition of the gas source; for example: the lambda of natural gas stoich ≈9.5, liquefied petroleum gas is about 15.5), the set air correction gain α (the air correction gain α is a sensitivity factor for adjusting the air compensation amount, preferably in the range of 0.1 to 0.5. In combination with the thermal response characteristics of the system, α is set to 0.25 in this embodiment) and the flame heat load deviation value ΔQ fed back by the evaluation module max , calculate the air ratio control amount A ratio , and its calculation formula is:

[0171]

[0172] Based on these 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 electronic damper, achieving dynamic and precise control of the gas supply and air mixing ratio. This control process works in conjunction with the nozzle jet intensity control to ensure that the flame output meets the actual heat requirements of the cookware.

[0173] The gas / air controller is based on the gas flow target value F gas and air ratio coefficient A ratio , generate gas flow regulation signal U valve , the conversion formula is as follows:

[0174]

[0175] Where k v F is the proportional coefficient of the flow control valve; max It is the maximum design gas flow of the system.

[0176] Among them, the control coefficient k of the proportional electronic control flow valve is v , used to convert the target gas flow rate Fgas into a drive control signal. Its value is determined based on the electronically controlled valve response curve, 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 a stable and linear response during the flow regulation process.

[0177] The gas flow regulation signal U valve The data is transmitted to the central processor, and the flow control valve is controlled by the important processor 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, making the overall combustion efficiency higher and the flame output more stable, adapting to the thermal characteristics of different cookware while achieving gas savings.

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

[0180] S1. Collect the eccentric position, bottom temperature distribution and flame coverage of the pot;

[0181] S2. Divide the pot bottom heating area into grid areas and analyze the target temperature rise requirement and 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 pot heat load center;

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

[0184] The parameter calculator calculates the spray direction angle (θx, θy) and air output intensity of each nozzle one by one according to the pot status, target heat load, template number and spray strategy to ensure that the heat load distribution meets the target requirements;

[0185] The parameter calculator obtains a flame configuration template according to the pot status tag, wherein the template includes a recommended direction initial value (θxbase, θybase) and a basic gas intensity (Ibase);

[0186] The parameter calculator receives the flame configuration template number, the pot status label and its corresponding structural parameter information output by the injection strategy parser, as well as the target heat load data and thermal deviation compensation function output by the evaluation module; the parameter calculator calculates the injection direction angle (θx, θy) and air outlet intensity parameters of each nozzle unit one by one according to the flame configuration definition corresponding to the template number and the heating requirements of the pot, forming an injection parameter set that meets 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 area units, each unit area is A unit , each nozzle unit is numbered i, and the set of pot bottom grids covered by its spray is defined as And calculate the total heat load Q that nozzle i should actually provide i :

[0188]

[0189] Where x1, x2, y1, y2 are the boundary coordinates of the heating grid corresponding to nozzle i in the x and y directions (their values ​​are preset in the flame configuration template); Q x,y targetis the target heat flux requirement of the (x, y)th grid point on the bottom of the pot; ΔQ(x, y): the value of the thermal deviation compensation function, which represents the additional compensation required for the uneven heat distribution at this point; A unit is the area of ​​each regional unit;

[0190] The parameter calculator obtains the coordinates of the center of gravity of the cookware (x 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] Where k θ is the nozzle deflection control coefficient, and its value is based on: Where θ max The maximum physical deflection angle of the nozzle is determined by the nozzle body structure and the limit deflection range of the drive electronic control mechanism; d max is the maximum possible center of gravity offset of the cookware. In this embodiment, the maximum center of gravity offset distance d of the cookware max Approximately equal to the radius from the edge of the pot support structure to the geometric center.

[0193] The steps of the parameter calculator for calculating the outgassing intensity parameter are as follows:

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

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

[0196]

[0197] Where, P i is the gas power supply of the i-th nozzle, Q i is the total heat load that the i-th nozzle should actually provide. In this embodiment, the calorific value of the gas from a single nozzle is H u (That is, the effective heat that can be released when the unit volume of gas is completely burned (usually 33~38J / m 3 , which varies depending on the type of gas), in this embodiment it is set to: Hu = 38 J / m 3 ,), the required gas flow is:

[0198]

[0199] Where, F i is the gas flow requirement of the i-th nozzle (indicates that in order to achieve the target power P i , the gas volume flow rate that needs to be input, P i is the gas energy power of the i-th nozzle.

[0200] In this embodiment, each nozzle is provided with a linear solenoid valve, and the control signal of each linear solenoid valve is U i (voltage or PWM) is linearly related to flow rate:

[0201] Where U i is the gas intensity control value of the i-th nozzle, which is usually expressed as the output value of the electric control signal (such as PWM duty cycle or analog voltage), F max is the maximum design flow rate of the nozzle, U max The maximum output signal of the controller (such as 5V (when the control signal is voltage) or 100% duty cycle (when the control signal is PWM)).

[0202] The intelligent detection module provides real-time perception of the pot's status, flame state, and heat distribution at the pot bottom, which is then transmitted to the evaluation module for heat load calculation and thermal deviation identification. This allows the system to dynamically analyze the pot's current heating needs, forming a targeted heat load model and significantly improving heat distribution accuracy. The evaluation module outputs spatial heat demand and flame compensation strategies, driving the nozzle array control module to calculate and control the spray angle and air output intensity of each nozzle. This allows the flame configuration to adapt to the pot's status, achieving refined control of the spatial thermal field.

[0203] The intelligent detection module performs multi-dimensional perception of the pot status, flame coverage, and bottom temperature distribution, and transmits the data in real time to the evaluation module for pot thermal load assessment and flame offset analysis. The nozzle array control module further adjusts the injection direction and gas intensity based on the evaluation results, and cooperates with the combustion control module to dynamically adjust the gas flow and air ratio, thereby forming a closed-loop adaptive combustion control mechanism. This enables the entire device to dynamically respond to changes in the pot and accurately control the fire, with the advantages of high thermal efficiency, strong adaptability, and rapid response.

[0204] The contents disclosed above are only preferred feasible embodiments of the present invention and do not limit the scope of protection of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the scope of protection of the present invention. In addition, the elements therein can be updated as technology develops.

Claims

1. An intelligent gas stove burner, comprising a pot and a furnace cavity 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 is used to control the gas flow and air mixing ratio to form an adjustable flame; the nozzle array control module is used to adjust the injection direction and output parameters of the flame to achieve directional distribution and configuration reconstruction of the flame in space; the intelligent detection module is used to obtain status data of the cookware, heating status data of the adjustable flame and actual flame distribution data; the evaluation module calculates the target heat load currently required by the cookware based on the status data of the cookware, heating status data of the adjustable flame and actual flame distribution data provided by the intelligent detection module, and transmits the target heat load to the combustion control module, while evaluating the injection strategy of the nozzle array control module and outputting a control instruction; Among them, the intelligent detection module includes a pot identification and detection unit and a flame distribution detection unit. The pot identification and detection unit is arranged on the base of the furnace cavity and is in direct contact with the pot to obtain the center of gravity deviation of the bottom of the pot and the thermal conductivity characteristics of the material to form the status data of the pot; the flame distribution detection unit is arranged around the flame injection path to obtain the heating status data of the adjustable flame.

2. The intelligent gas stove burner according to claim 1, characterized in that: The nozzle array control module includes a nozzle adjustment control assembly, at least two nozzle units disposed on a furnace chamber base, and independently drivable electrically controlled adjustment mechanisms associated with the at least two nozzle units, wherein the at least two nozzle units are arranged in a preset array structure to cover multiple heating zones on the bottom of the cookware. The nozzle adjustment control assembly is configured to receive the spray strategy output by the evaluation module and, in combination with the cookware status data and the target heat load, generate spray direction angle and air outlet intensity control instructions 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 spray direction adjustment and flow control, thereby realizing spatial linkage adjustment of the array nozzles to form a flame configuration that adapts to the thermal requirements of the cookware.

3. The intelligent gas stove burner according to claim 2, characterized in that: The combustion control module includes a gas supply adjustment unit and an air mixing ratio adjustment unit. The gas supply adjustment unit adjusts the gas flow rate according to the target heat load; the air mixing ratio adjustment unit is used to dynamically adjust the mixing ratio of air and gas so that the mixed gas concentration matches the requirements of different combustion stages.

4. The intelligent gas stove burner according to claim 1 or 3, characterized in that: The evaluation module includes a data processing unit and a control strategy unit. The data processing unit is used to receive the cookware status data, flame heating status data and flame distribution data from the intelligent detection module, and calculate the current target heat load corresponding to the cookware based on a preset multi-parameter evaluation model in combination with the heat capacity parameters, bottom temperature distribution gradient and offset of the flame coverage area of ​​the cookware; the control strategy unit generates gas flow and air ratio control instructions for the combustion control module according to the target heat load, and calculates the injection direction and output intensity parameters of each nozzle unit in the nozzle array control module in combination with the flame distribution deviation information to achieve adaptive optimization of the flame space configuration.

5. The intelligent gas stove burner according to claim 4, characterized in that: The multi-parameter evaluation model is constructed based on the physical parameters of the cookware, the temperature response characteristics and the flame space action state, and includes the following steps: S1. Collect the eccentric position, bottom temperature distribution and flame coverage of the pot; S2. Divide the pot bottom heating area into grid areas and analyze the target temperature rise requirement and 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 pot heat load center; S4. Output the current target heat load of the cookware according to the total amount of thermal deviation, and generate a spatial thermal compensation strategy for the nozzle array control module.

6. The intelligent gas stove burner according to claim 5, characterized in that: The pot identification and detection unit includes a pressure sensing component, a pot bottom contact range detection component, an infrared material identification component, and a pot status calculator. The pressure sensing component is arranged on the support surface of the oven cavity base, and senses the vertical pressure distribution of each contact point of the pot to obtain the total mass of the pot and the bottom center of gravity deviation position data; the pot bottom contact range detection component is arranged on the contact end surface of the oven cavity base and the pot to sense the contact area of ​​the pot; the infrared material identification component is arranged on the contact end surface of the oven cavity base and the pot, and obtains the reflectivity or emissivity data of the bottom of the pot in a specific band to indirectly obtain the thermal conductivity characteristics of the material of the pot; the pot status calculator receives the results of the pressure sensing component, the pot bottom contact range detection component, and the infrared material identification component to output the status data of the pot.

7. The intelligent gas stove burner according to claim 6, characterized in that: 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 provided on the furnace cavity base, and one end of the gas supply channel is connected to the outside 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 end surface of the furnace cavity base to form a gas combustion area. The flow control valve is arranged in the gas supply channel and controls the gas flow entering the gas supply port. The pressure detection valve is installed in the gas supply channel and monitors the gas pressure fluctuation data in real time. The flow regulation controller receives the target thermal load value from the evaluation module and combines the pressure detection and flow data to output a valve regulation voltage or step signal to dynamically control the gas supply amount of the flow control valve.

8. The intelligent gas stove burner according to claim 7, characterized in that: The air mixing ratio adjustment unit includes an induction adjustment component, a heat-conducting rib, a fixed probe, at least one induction probe, and an outer periphery of an auxiliary oxygen supply channel nested in the gas supply channel. The induction adjustment component is arranged on the furnace cavity base and adjusts at least one of the induction 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 along the inner wall of the auxiliary oxygen supply channel. Wherein, the side wall of the auxiliary oxygen supply channel is provided with at least one oxygen supply port, and the at least one oxygen supply port is distributed at equal intervals along the side wall of the auxiliary oxygen supply channel.

9. The intelligent gas stove burner according to claim 8, characterized in that: The two side walls of the furnace cavity base are provided with action cavities, and the induction adjustment component is arranged in the action cavity.

10. The intelligent gas stove burner according to claim 9, 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 portion. The adjustment toothed belt is arranged along the outer wall of the induction probe in the length direction. The fixed sleeve is arranged through the furnace chamber 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. Wherein, teeth are provided on a side of the adjusting roller close to at least one sensing needle, and the teeth are engaged with the adjusting toothed belt.

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