A rapid preheating method of alcohol-based fuel self-heating vaporization combustor

Abstract

The application discloses a kind of quick preheating methods of alcohol-based fuel self-heating vaporization combustor, it is related to vaporization combustor technical field, the ignition oil pipe of ignition system extends to the inside of combustor, after inputting liquid alcohol-based fuel into combustor, pulse generator carries out pulse discharge ignition;By control terminal cooperation data acquisition unit, the ignition process is monitored, flame ion and combustor temperature data are obtained, alcohol-based fuel state data is sent to data processing unit, after being analyzed by data processing unit, the combustion-supporting strategy of frequency conversion control ignition combustion-supporting fan is generated, corresponding matching combustion-supporting wind is output into combustor, ensure that the minimum temperature required for preheating reaches vaporization work in shortest time, enter normal operating stage, to realize the function of self-heating vaporization combustion work.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vaporizing burners, in particular to a rapid preheating method of an alcohol-based fuel self-heating vaporizing burner. BACKGROUND

[0002] At present, the energy used for combustion in the restaurant industry is mostly natural gas and liquefied gas, which is not only high in cost but also gradually reduced in resources with the development of energy. There are also some people who use diesel for combustion, but the smell is large, which affects people's health, and the cost is also high and the resources are reduced. Therefore, researchers have developed low-cost and widely available alcohol-based fuels.

[0003] In the Chinese invention patent with the publication number CN109579076A, a small alcohol-based fuel self-heating vaporizing combustion device is adopted, which realizes self-heating vaporizing combustion after preheating by liquid alcohol-based fuel ignition. The achievement is transformed into an alcohol-based fuel liquid fuel furnace product, which has a very good market response.

[0004] However, there is still a disadvantage of long preheating time in use: the main component of the liquid alcohol-based fuel used in the liquid fuel furnace is methanol, and the volatility of liquid methanol is weak, especially in an environment below 15 degrees Celsius. After the pulse ignition, a long (> 60s) preheating time is required to enter the normal operating state.

[0005] Therefore, the present application provides a rapid preheating method of an alcohol-based fuel self-heating vaporizing burner. SUMMARY

[0006] (I) Technical problems to be solved

[0007] In view of the deficiencies in the prior art, the present application provides a rapid preheating method of an alcohol-based fuel self-heating vaporizing burner. One end of the ignition system is extended to the inside of the burner, and after the oil supply system inputs liquid alcohol-based fuel into the burner, the pulse generator performs pulse discharge ignition on the liquid alcohol-based fuel. The control terminal cooperates with the data acquisition unit to monitor the ignition process, obtains flame ions and burner temperature data, and sends alcohol-based fuel state data to the data processing unit. After analysis by the data processing unit, the frequency conversion control instruction is output to the fan frequency conversion control unit, and the fan frequency conversion control unit controls the combustion-supporting fan to output the corresponding matching combustion-supporting wind to the burner, so as to ensure that the preheating vaporizing chamber reaches the required temperature in the shortest time after ignition, avoid long low-temperature ignition time, realize rapid ignition preheating success in various environments, and solve the problems in the background art.

[0008] (II) Technical solutions

[0009] In order to achieve the above object, the present application is implemented by the following technical scheme: a kind of alcohol-based fuel self-heating vaporization combustor's quick preheating method, including oil supply system, ignition system, combustor, control terminal, data acquisition unit, data processing unit, alarm unit and frequency conversion fan, wherein the ignition system extends to the inside of the combustor at one end, after liquid alcohol-based fuel is input into combustor by oil supply system, ignition system is ignited to liquid alcohol-based fuel by pulse discharge, flame preheats combustor to reach preset working temperature condition;By control terminal cooperating with data acquisition unit, the ignition process is detected, flame ion and combustor temperature data are acquired, flame ion and combustor temperature data are sent to data processing unit, after being analyzed by data processing unit, in combination with the volatility and vaporization characteristics of methanol at different temperatures, combustion-supporting strategy is output to fan frequency conversion control unit, fan frequency conversion control unit controls ignition combustion-supporting fan frequency conversion, and the matched combustion-supporting wind is output into combustor, to accelerate the combustion of liquid alcohol-based fuel in combustor, and combustor is quickly preheated to reach preset working temperature.

[0010] Further, the oil supply system includes an oil tank, an oil pump, a three-way valve and a power supply, wherein the oil supply system includes a power supply for providing power, the oil tank contains liquid alcohol-based fuel, and the oil tank is connected with the oil pump and the three-way valve in sequence; two channels of the output end of the three-way valve are connected with an ignition oil pipe and a vaporization oil pipe respectively, the ignition oil pipe extends into an ignition chamber, and the vaporization oil pipe extends into a vaporization chamber ring pipe; the vaporization chamber ring pipe is connected with a T-shaped transition pipe, and the lower end of the T-shaped transition pipe is connected with a lower conical chamber; a gas injection hole is formed in the upper part of the conical chamber.

[0011] Further, the combustor includes a gas guide pipe, an ignition oil pipe, a vaporization oil pipe, an ignition chamber, a vaporization chamber ring pipe, a lower conical chamber, an air inlet hole and a gas injection hole, wherein the combustor includes a transversely arranged gas guide pipe, and the ignition chamber is connected to one side of the gas guide pipe; the upper end of the ignition chamber is provided with a T-shaped transition pipe, and the bottom end of the T-shaped transition pipe is provided with a lower conical chamber; a gas injection hole is formed in the upper surface of the lower conical chamber.

[0012] Further, the ignition system includes a first pulse generator, an ignition needle, an ignition combustion-supporting fan, an ignition chamber temperature sensor, a flame ion sensor and a vaporization chamber temperature sensor, wherein the ignition system includes an ignition combustion-supporting fan and a pulse generator; one end of the pulse generator is connected with the ignition needle, and the end of the ignition needle extends into the inside of the ignition chamber; the ignition combustion-supporting fan is communicated with the ignition chamber through the gas guide pipe.

[0013] Further, the ignition chamber temperature sensor is arranged at the lower part of the burner and connected with the ignition chamber, and the ignition chamber temperature sensor is arranged at one side of the ignition chamber, and the flame ionization sensor and the vaporization chamber temperature sensor are arranged above the ignition chamber temperature sensor, one end of the flame ionization sensor penetrates through the air inlet hole and extends into the ignition chamber, and the vaporization chamber temperature sensor is arranged outside the vaporization chamber ring pipe.

[0014] Further, the control terminal is connected with the power supply, the control terminal comprises an oil level sensor connection port, after the liquid alcohol-based fuel is injected into the oil tank, the oil level sensor connection port detects the amount of the liquid alcohol-based fuel in the oil tank, the pulse generator control port is used for pulse ignition of the liquid alcohol-based fuel output by the ignition oil pipe, the three-way valve control port is used for cutting off or opening the fuel output of the ignition oil pipe and the vaporization oil pipe, and the oil pump control port is used for controlling the output fuel amount of the oil pump.

[0015] Further, the vaporization chamber temperature sensor is connected outside the vaporization chamber ring pipe at the upper part of the burner, after detecting that the temperature of the vaporization chamber reaches the set value, information is sent to the control terminal, so that the three-way valve stops supplying oil to the ignition oil pipe, the liquid alcohol-based fuel enters the vaporization chamber ring pipe from the vaporization oil pipe, is heated and vaporized, and then flows downward through the T-shaped transition pipe to the lower conical chamber of the chamber and is sprayed from the air injection hole for combustion.

[0016] Further, the data acquisition unit comprises a temperature detection module, a flame intensity detection module and an oil level detection module, wherein when the liquid alcohol-based fuel enters the ignition chamber and is in an ignition state, the temperature detection module detects the temperature of the ignition chamber, obtains the combustion temperature Rt in the ignition chamber, the flame intensity detection module detects the intensity of the flame in the ignition chamber, and obtains the flame intensity Hq; the combustion temperature Rt and the flame intensity Hq are summarized to establish a combustion state data set; and the oil level detection module detects the oil amount state in the oil tank.

[0017] Further, the data processing unit comprises an evaluation module, a judgment module, a selection module and a summary module, wherein the combustion state data set is sent to the evaluation module, the combustion temperature Rt and the flame intensity Hq are processed dimensionlessly, and the combustion coefficient Rxs is generated according to the following formula:

[0018]

[0019] Wherein, the parameter meanings are: 0.38≤F1≤0.90, 0.58≤F2≤1.22, and C is a constant correction coefficient.

[0020] Further, the combustion coefficient Rxs is sent to a judgment module, the judgment module is provided with a combustion threshold value, and a combustion assisting strategy is summarized by the summary module according to the combustion temperature Rt and the flame intensity Hq distribution, and a combustion assisting strategy library is established; when the combustion coefficient Rxs is not greater than the corresponding combustion threshold value, the corresponding combustion assisting strategy is selected from the combustion assisting strategy library by the selection module and outputted in combination with the liquid methanol state data in the current ignition chamber; the analysis result is generated by referring to the structural parameters of the oil supply system, the ignition system, the burner and the control terminal; if the analysis result shows that the combustion assisting strategy is not feasible, the alarm unit alarms externally; if the analysis result shows that the combustion assisting strategy is feasible, the rotational frequency of the ignition combustion fan is controlled by the fan frequency conversion control unit, and the combustion assisting strategy is executed.

[0021] (III) Beneficial Effects

[0022] The application provides a rapid preheating method of an alcohol-based fuel self-heating vaporization burner, and has the following beneficial effects:

[0023] 1. The ignition chamber temperature sensor is arranged at the lower part of the burner and connected with the ignition chamber of the burner, so that the temperature information of the combustion chamber can be quickly and accurately detected and sent to the control terminal, the ignition combustion fan is controlled to work in the frequency conversion mode, and the wind-oil ratio effect meeting the preset requirements is obtained.

[0024] 2. According to the volatilization and vaporization characteristics of liquid methanol at different temperatures, after the liquid alcohol-based fuel output by the pulse generator is accurately ignited, the control terminal controls the rotational frequency of the combustion fan in the frequency conversion mode according to the temperature signal of the ignition chamber obtained by the ignition chamber temperature sensor, small wind is provided at a low temperature to avoid the flame from being blown out, the wind volume is appropriately increased when the temperature gradually rises and the methanol is more easily volatilized and vaporized, the efficient combustion air and the ignition oil can make the temperature of the vaporization chamber of the burner quickly reach the working state requirements, the phenomenon that the ignition time is too long at a low temperature is avoided, and rapid ignition preheating success is realized under various environments.

[0025] 3. When the temperature of the vaporization chamber reaches the set value, the control terminal instructs the three-way valve to stop supplying oil to the ignition oil pipe, the fuel enters the vaporization chamber ring pipe from the vaporization oil pipe, is heated and vaporized, and then flows downward to the lower conical chamber through the T-shaped transition pipe and is sprayed for combustion, that is, ignition preheating success, and the normal operation stage is started, the size of the fire can be adjusted by controlling the oil pump to work in the frequency conversion mode through the pump control connection port, the combustion flame continuously heats the vaporization chamber ring pipe, the function of converting the liquid alcohol-based fuel into gaseous fuel for combustion and heat supply is realized, and the combustion fan stops working to save electricity. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic view of the forward cross-sectional structure of the vaporization burner of the application.

[0027] Figure 2 It is a schematic view of the lateral cross-sectional structure of the vaporization burner of the application.

[0028] Figure 3 The working flow chart of the vaporization combustor of the present application;

[0029] In the figure:

[0030] 10, oil supply system; 101, oil tank; 102, oil pump; 103, three-way valve; 104, power supply; 20, ignition system; 201, pulse generator; 202, ignition needle; 203, ignition air fan; 204, ignition chamber temperature sensor; 205, flame ionization sensor; 206, vaporization chamber temperature sensor;

[0031] 30, combustor; 301, air guide pipe; 302, ignition oil pipe; 303, vaporization oil pipe; 304, T-shaped transition pipe; 305, ignition chamber; 306, vaporization chamber ring pipe; 307, lower conical chamber; 308, air inlet hole; 309, air jet hole;

[0032] 40, control terminal; 401, oil level sensor connection port; 402, pulse generator control connection port; 403, three-way valve control connection port; 404, oil pump control connection port; 405, fan frequency conversion control connection port;

[0033] 50, data acquisition unit; 501, temperature detection module; 502, flame intensity detection module; 503, oil level detection module; 60, data processing unit; 601, evaluation module; 602, judgment module; 603, selection module; 604, summary module; 70, oil pump control unit; 80, alarm unit; 90, fan frequency conversion control unit; 100, pulse control unit; 110, valve control unit. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] Please refer to Figure 1-Figure 3 The present application provides a rapid preheating method of an alcohol-based fuel self-heating vaporization combustor, which comprises an oil supply system 10, an ignition system 20, a combustor 30, a control terminal 40, a data acquisition unit 50, a data processing unit 60, an oil pump control unit 70, an alarm unit 80, a fan frequency conversion control unit 90, a pulse control unit 100, and a valve control unit 110, wherein,

[0036] The ignition system 20 extends to the inside of the combustor 30, after the fuel supply system 10 inputs liquid alcohol-based fuel into the combustor 30, the ignition system 20 carries out pulse discharge ignition on the liquid alcohol-based fuel, and the flame preheats the combustor 30 to reach the preset working temperature condition;

[0037] The control terminal 40 cooperates with the data acquisition unit 50 to detect the ignition process, obtain flame ion and combustor temperature data, and send alcohol-based fuel state data to the data processing unit 60. After analysis by the data processing unit 60, combined with the volatilization and vaporization characteristics of methanol at different temperatures, the combustion supporting strategy is output to the fan frequency conversion control unit 90, the liquid alcohol-based fuel is accelerated to burn, and after the combustor 30 is quickly preheated to reach the preset working temperature, the valve control unit 110 controls the alcohol-based liquid fuel to enter the combustor 30 through the gasification oil pipe, and the preheating process is completed;

[0038] The data acquisition unit 50 monitors the ignition preheating process, if the flame ion and combustor temperature data cannot reach the state set by the data processing unit 60 after the ignition time is exceeded, the data processing unit 60 closes the system and instructs the alarm unit 80 to alarm, to ensure the safe operation of the whole system.

[0039] Reference Figure 1 And Figure 2 , the fuel supply system 10 includes an oil tank 101, an oil pump 102, a three-way valve 103, and a power supply 104, wherein,

[0040] The fuel supply system 10 includes a power supply 104 for providing power, the oil tank 101 contains liquid alcohol-based fuel, and the oil tank 101 is connected with an oil pump 102 and a three-way valve 103 in sequence: the output end of the three-way valve 103 is connected with an ignition oil pipe 302 and a gasification oil pipe 303 through two channels, the ignition oil pipe 302 extends into an ignition chamber 305, the gasification oil pipe 303 extends into a gasification chamber ring pipe 306, the gasification chamber ring pipe 306 is connected with a T-shaped transition pipe 304, and the lower end of the T-shaped transition pipe 304 is connected with a lower conical chamber 307, and a gas injection hole 309 is formed above the conical chamber 307.

[0041] In the ignition stage, the liquid alcohol-based fuel enters the ignition chamber 305 through the ignition oil pipe 302 and is ignited, the ignition combustion fan accelerates the combustion of the liquid alcohol-based fuel, and the generated flame preheats the gasification chamber ring pipe 306 to reach the set temperature;

[0042] In the running stage, the liquid alcohol-based fuel entering the vaporization chamber ring pipe 306 from the vaporization oil pipe 303 is heated and vaporized, then enters the lower conical chamber 307 through the T-shaped transition pipe 304, and is sprayed out of the jet hole 309 to burn, so that the flame continues to heat the vaporization chamber ring pipe 306, forming a circulating effect of heating and burning the liquid alcohol-based fuel.

[0043] Referring to Figure 1 and Figure 2 , the burner 30 comprises an air guide pipe 301, an ignition oil pipe 302, a vaporization oil pipe 303, an ignition chamber 305, a vaporization chamber ring pipe 306 and a lower conical chamber 307, an air inlet hole 308, a jet hole 309,

[0044] Among them, the burner 30 comprises a transversely arranged air guide pipe 301, which is connected with the ignition chamber 305 on one side of the air guide pipe 301, the upper end of the ignition chamber 305 is provided with a T-shaped transition pipe 304, the bottom end of the T-shaped transition pipe 304 is provided with a lower conical chamber 307, and the upper surface of the lower conical chamber 307 is provided with a jet hole 309;

[0045] Referring to Figure 1 and Figure 2 , the ignition system 20 comprises a first pulse generator 201, an ignition needle 202, an ignition combustion fan 203, an ignition chamber temperature sensor 204, a fire ion sensor 205 and a vaporization chamber temperature sensor 206, wherein the ignition system 20 comprises an ignition combustion fan 203 and a pulse generator 201, one end of the pulse generator 201 is connected with the ignition needle 202, the end of the ignition needle 202 extends to the inside of the ignition chamber 305, and the ignition combustion fan 203 communicates with the ignition chamber 305 through the air guide pipe 301.

[0046] An ignition chamber temperature sensor 204 is arranged on one side of the ignition chamber 305, a fire ion sensor 205 and a vaporization chamber temperature sensor 206 are arranged above the ignition chamber temperature sensor 204, one end of the fire ion sensor 205 penetrates through the air inlet hole 308 and extends to the inside of the ignition chamber 305, and the vaporization chamber temperature sensor 206 is arranged outside the vaporization chamber ring pipe 306.

[0047] Referring to Figure 1 and Figure 2The control terminal 40 is connected with the power supply 104 and is powered by the power supply 104, and the control terminal 40 comprises an oil level sensor connection port 401, a pulse generator control connection port 402, a three-way valve control connection port 403, an oil pump control connection port 404, and a fan frequency conversion control connection port 405. After the liquid alcohol-based fuel is injected into the oil tank 101, the amount of the liquid alcohol-based fuel in the oil tank 101 is detected through the oil level sensor connection port 401, the output fuel amount of the oil pump is controlled through the oil pump control port 404, the three-way valve 103 is controlled to switch the fuel output of the ignition oil pipe 302 and the vaporization oil pipe 303 through the three-way valve control connection port 403, the liquid alcohol-based fuel output by the ignition oil pipe 302 is pulse ignited through the pulse generator control connection port 402, and the combustion-supporting fan is controlled to support combustion to obtain a rapid preheating effect through the fan frequency conversion control port 405.

[0048] The ignition needle 202 is connected inside the burner 30 and pulse discharge ignites the liquid alcohol-based fuel input by the ignition oil pipe 302, the ignition chamber temperature sensor 204 feeds back the temperature in the ignition chamber 305 to the control terminal 40, the ignition combustion-supporting fan 203 is controlled to work in frequency conversion by the control terminal 40, and the ignition chamber temperature sensor 204, the fire ion sensor 205, and the vaporization chamber temperature sensor 206 obtain signals to monitor the rapid ignition preheating of the burner 30.

[0049] The ignition chamber temperature sensor 204 is connected to the lower part of the burner 30 and the ignition chamber 305, so as to quickly and accurately detect the temperature information of the combustion chamber and send it to the control terminal 40. According to the volatilization and vaporization characteristics of methanol at different temperatures, the ignition combustion-supporting fan 203 is controlled to work in frequency conversion, the oil distribution ratio effect meeting the preset requirements is obtained, the long ignition time at low temperature is avoided, and the rapid ignition preheating is realized in various environments.

[0050] The vaporization chamber temperature sensor 206 is connected to the outside of the vaporization chamber ring pipe 306 at the upper part of the burner 30. After detecting that the temperature of the vaporization chamber reaches the set value, information is sent to the control terminal 40, so that the three-way valve 103 stops supplying oil to the ignition oil pipe 302. The liquid alcohol-based fuel enters the vaporization chamber ring pipe 306 from the vaporization oil pipe 303, is heated and vaporized, and then flows down through the T-shaped transition pipe 304 to the lower conical chamber 307 and is sprayed from the jet hole 309 to be burned, which means that the ignition preheating is successful, and the running stage is started. The fire size can be adjusted according to the use requirements, the combustion flame continuously heats the vaporization chamber ring pipe 306, the liquid alcohol-based fuel is converted into gas for combustion and heating, and then the combustion-supporting fan stops working.

[0051] The flame ionization sensor 205 enters the inside of the burner 30, and its flame intensity information, in combination with the information of the ignition chamber temperature sensor 204, can more accurately determine whether the ignition preheating is successful or not, in addition to being able to quickly determine the failure of accidental extinguishing.

[0052] Reference Figures 1 to 3 The data acquisition unit 50 includes a temperature detection module 501, a flame intensity detection module 502, and an oil level detection module 503. When the liquid alcohol-based fuel enters the ignition chamber 305 and is in an ignition state, the temperature detection module 501 detects the temperature of the ignition chamber 305 to obtain the combustion temperature Rt in the ignition chamber 305, and the flame intensity detection module 502 detects the intensity of the flame of the ignition chamber 305 to obtain the flame intensity Hq. The combustion temperature Rt and the flame intensity Hq are summarized to establish a combustion state data set, and the oil level detection module 503 detects the oil amount state in the oil tank.

[0053] The data processing unit 60 includes an evaluation module 601, a judgment module 602, a selection module 603, and a summary module 604. The combustion state data set is sent to the evaluation module 601, the combustion temperature Rt and the flame intensity Hq are dimensionless processed, and the combustion coefficient Rxs is generated according to the following formula:

[0054]

[0055] Wherein, the parameter meanings are: 0.38≤F1≤0.90, 0.58≤F2≤1.22, and C is a constant correction coefficient.

[0056] The combustion coefficient Rxs is sent to the judgment module 602, which is provided with a combustion threshold. According to the distribution of the combustion temperature Rt and the flame intensity Hq, the summary module 604 summarizes the combustion support strategy to establish a combustion support strategy library.

[0057] When the combustion coefficient Rxs is not greater than the corresponding combustion threshold, the current liquid methanol state data in the ignition chamber 305, such as the combustion temperature, the flame intensity, and the distribution state, are combined to select the corresponding combustion support strategy from the combustion support strategy library by the selection module 603 and output, wherein it is necessary to note that the combustion support strategy includes the speed frequency control of the ignition combustion fan by the fan frequency control unit 90, the continuous working time, and other parameters.

[0058] In the ignition stage, the combustion state of the liquid alcohol-based fuel is monitored, and the combustion coefficient Rxs is formed from the monitoring data. According to the value of the combustion coefficient Rxs, it is determined whether further combustion support is needed inside the ignition chamber 305.

[0059] The control terminal 40 controls the frequency conversion of the rotation speed of the ignition combustion fan 203 through the fan frequency conversion control unit 90, so as to obtain the matching air volume, obtain the efficient combustion air and ignition oil ratio, and thus the temperature of the vaporization chamber of the burner can quickly reach the normal working state.

[0060] In the ignition stage, the liquid alcohol-based fuel output by the ignition oil pipe is ignited in pulses, and when the temperature is low, the liquid alcohol-based fuel vaporizes poorly, so a small amount of air should be supplied to avoid the flame being blown out. When the temperature gradually rises, the methanol vaporizes more easily, and the air volume should be appropriately increased. The control terminal controls the rotation speed of the combustion fan according to the temperature signal of the ignition chamber temperature sensor, so as to obtain the efficient combustion air and ignition oil ratio, and thus the temperature of the vaporization chamber ring pipe of the burner can quickly reach the working state requirement, and the rapid ignition preheating success can be realized under various environments.

[0061] In the running stage: when it is detected that the temperature of the vaporization chamber ring pipe reaches the set value, the control terminal instructs the three-way valve to stop supplying oil to the ignition oil pipe. The alcohol-based fuel enters the vaporization chamber ring pipe from the vaporization oil pipe, is heated and vaporized, and then flows downward through the T-shaped transition pipe to the lower conical chamber and is sprayed from the jet hole, forming a flame that continuously heats the vaporization chamber ring pipe. This is the ignition preheating success, and the normal running stage is entered. The frequency conversion of the oil pump can be adjusted by the oil pump control connection port to adjust the fire size, and the combustion flame continuously heats the vaporization chamber ring pipe to realize the function of converting the liquid alcohol-based fuel into gaseous fuel for heating, and at the same time, the combustion fan stops working to save electricity.

[0062] Implementation effect test comparison: the experiment was conducted in a room with the same environment temperature of 12℃, and the ignition preheating time of the "small alcohol-based fuel self-heating vaporization combustion device" with the patent number ZL201811563675.1 was 65-70 seconds. After the "method for realizing rapid ignition preheating success of small alcohol-based fuel self-heating vaporization burner" was added to the combustion device, the ignition preheating time was 10-15 seconds, which was greatly improved.

[0063] The above embodiments can be realized wholly or partially by software, hardware, firmware or any combination thereof. When realized by software, the above embodiments can be realized in the form of a computer program product wholly or partially. Those skilled in the art can realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solutions.

[0064] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may also be distributed to multiple network units. Part or all of the units can be selected to achieve the purpose of the embodiment of the present application according to actual needs.

[0065] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A rapid preheating method for an alcohol-based fuel self-heating vaporizing burner, characterized in that: It includes oil supply system, ignition system, burner, control terminal, data acquisition unit, data processing unit, oil pump control unit, alarm unit, fan frequency conversion control unit, pulse control unit and valve control unit, among which, One end of the ignition system extends to the interior of the burner. After the oil supply system inputs liquid alcohol-based fuel into the burner, the ignition system performs pulse discharge to ignite the liquid alcohol-based fuel, and the flame preheats the burner to a preset working temperature condition. The control terminal cooperates with the data acquisition unit to detect the ignition process, obtain flame ion and burner temperature data, and send the liquid alcohol-based fuel status data to the data processing unit. After analysis by the data processing unit, combined with the volatility and vaporization characteristics of the liquid alcohol-based fuel at different temperatures, the combustion-supporting strategy is output to the fan frequency conversion control unit. The liquid alcohol-based fuel is accelerated to burn. After the burner is quickly preheated to the preset operating temperature, the valve control unit controls the liquid alcohol-based fuel to enter the burner through the vaporization oil pipe, completing the preheating process. The data acquisition unit monitors the ignition preheating process. If the flame ionization and burner temperature data cannot reach the state set by the data processing unit after the ignition time expires, the data processing unit shuts down the system and instructs the alarm unit to sound an alarm. The data processing unit includes an evaluation module, a judgment module, a selection module, and a summary module. The combustion state data set is sent to the evaluation module, and the combustion temperature Rt and the flame intensity Hq are dimensionlessly processed to generate the combustion coefficient Rxs according to the following formula: ， The parameters have the following meanings: , , is the constant correction coefficient; The combustion coefficient Rxs is sent to the judgment module, which is set with a combustion threshold. According to the distribution of combustion temperature Rt and flame intensity Hq, the summary module summarizes the combustion support strategy and establishes a combustion support strategy library; When the combustion coefficient Rxs is not greater than the corresponding combustion threshold, the selection module selects and outputs the corresponding combustion support strategy from the combustion support strategy library based on the current liquid alcohol-based fuel state data in the ignition chamber, including combustion temperature, flame intensity and distribution state; The data acquisition unit includes a temperature detection module, a flame intensity detection module, and an oil level detection module. When the liquid alcohol-based fuel enters the ignition chamber and is in the ignition state, the temperature detection module detects the temperature of the ignition chamber to obtain the combustion temperature Rt in the ignition chamber, and the flame intensity detection module detects the intensity of the flame in the ignition chamber to obtain the flame intensity Hq. The combustion temperature Rt and the flame intensity Hq are summarized to establish a combustion state data set. The oil level detection module detects the oil level in the fuel tank.

2. The rapid preheating method for an alcohol-based fuel self-heating vaporizing burner according to claim 1, characterized in that: The burner includes an air guide pipe, an ignition oil pipe, a vaporization oil pipe, an ignition chamber, a vaporization chamber ring pipe, a lower conical chamber, an air inlet, and an air jet hole. The burner includes a transversely arranged air guide pipe, an ignition chamber connected to one side of the air guide pipe, a T-shaped transition pipe provided at the upper end of the ignition chamber, a lower conical chamber provided at the bottom end of the T-shaped transition pipe, and an air jet hole opened on the upper surface of the lower conical chamber; The oil supply system includes an oil tank, an oil pump, a three-way valve and a power supply, wherein: The fuel supply system includes a power supply, and the fuel tank contains liquid alcohol-based fuel. The fuel tank is connected to an oil pump and a three-way valve in sequence: the two channels at the output end of the three-way valve are respectively connected to the ignition oil pipe and the vaporization oil pipe, the ignition oil pipe extends into the ignition chamber, the vaporization oil pipe extends into the vaporization chamber ring pipe, the vaporization chamber ring pipe is connected to a T-type transition pipe, the lower end of the T-type transition pipe is connected to a lower conical chamber, and an injection hole is opened above the conical chamber.

3. The rapid preheating method for the alcohol-based fuel self-heating vaporization burner according to claim 2, characterized in that: The ignition system includes a first pulse generator, an ignition needle, an ignition and combustion-supporting fan, an ignition chamber temperature sensor, an ignition ion sensor and a vaporization chamber temperature sensor, wherein the ignition system includes an ignition and combustion-supporting fan and a pulse generator, one end of the pulse generator is connected to the ignition needle, the end of the ignition needle extends to the interior of the ignition chamber, and the ignition and combustion-supporting fan is connected to the ignition chamber through an air duct.

4. The rapid preheating method for an alcohol-based fuel self-heating vaporizing burner according to claim 3, characterized in that: An ignition chamber temperature sensor is provided on one side of the ignition chamber, and a fire ion sensor and a vaporization chamber temperature sensor are provided above the ignition chamber temperature sensor. One end of the fire ion sensor passes through the air inlet and extends to the inside of the ignition chamber, and the vaporization chamber temperature sensor is provided on the outside of the vaporization chamber ring tube.

5. The rapid preheating method for the alcohol-based fuel self-heating vaporization burner according to claim 4, characterized in that: The control terminal is connected to a power supply, and includes an oil level sensor connection port, a pulse generator control connection port, a three-way valve control connection port, an oil pump control connection port, and a fan frequency conversion control connection port. After liquid alcohol-based fuel is injected into the fuel tank, the amount of liquid alcohol-based fuel in the fuel tank is detected through the oil level sensor connection port, the output fuel amount of the oil pump is controlled through the oil pump control port, the three-way valve control connection port is used to control the three-way valve to switch the fuel output of the ignition oil pipe and the vaporization oil pipe, the pulse generator control connection port is used to perform pulse ignition on the liquid alcohol-based fuel output from the ignition oil pipe, and the fan frequency conversion control port is used to control the air volume of the combustion-supporting fan to assist combustion and obtain a rapid preheating effect.

6. The rapid preheating method for an alcohol-based fuel self-heating vaporizing burner according to claim 5, characterized in that: The ignition chamber temperature sensor is located at the lower portion of the burner and is connected to the ignition chamber. It quickly and accurately detects the temperature information of the combustion chamber and sends it to the control terminal. According to the volatilization and vaporization characteristics of the liquid alcohol-based fuel at different temperatures, the ignition and combustion-supporting fan is controlled to operate at a variable frequency to obtain an oil distribution ratio that meets preset requirements, thereby avoiding the phenomenon of long low-temperature ignition time and achieving successful rapid ignition and preheating under various environments.

7. The rapid preheating method for an alcohol-based fuel self-heating vaporizing burner according to claim 6, characterized in that: The vaporization chamber temperature sensor is connected to the outer side of the vaporization chamber annular tube at the upper part of the burner. After detecting that the temperature of the vaporization chamber reaches the set value, it sends the information to the control terminal, causing the three-way valve to stop supplying oil to the ignition oil pipe. The liquid alcohol-based fuel enters the vaporization chamber annular tube from the vaporization oil pipe, is heated and vaporized, and then flows down through the T-shaped transition pipe to the lower conical chamber of the chamber and is ejected from the injection hole for combustion.

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