WO2021012318A1 - 一种加热不燃烧烟草制品烟气持续释放的控制方法 - Google Patents

一种加热不燃烧烟草制品烟气持续释放的控制方法 Download PDF

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WO2021012318A1
WO2021012318A1 PCT/CN2019/099624 CN2019099624W WO2021012318A1 WO 2021012318 A1 WO2021012318 A1 WO 2021012318A1 CN 2019099624 W CN2019099624 W CN 2019099624W WO 2021012318 A1 WO2021012318 A1 WO 2021012318A1
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heating
heating device
smoke
temperature
suction
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PCT/CN2019/099624
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English (en)
French (fr)
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徐迎波
王健
葛少林
佘世科
张亚平
朱栋梁
陈开波
张超
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安徽中烟工业有限责任公司
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  • the invention belongs to the technical field of heat-not-burn cigarettes. More specifically, the present invention relates to a method for controlling the continuous emission of smoke from heat-not-burn tobacco products.
  • Heat-not-burn tobacco products are tobacco products that use special heat sources to heat tobacco materials. Its heating temperature does not exceed 500 °C, thus reducing the pyrolysis and incomplete combustion reactions of tobacco chemical components and harmful chemicals in the smoke. The ingredients and biological toxicity are greatly reduced, thereby significantly reducing the harm to the human body and the environment.
  • Heating non-burning tobacco products are divided into electric heating type, physical and chemical reaction heating type, fuel heating type, etc. according to different heating methods. These products are all heated by external heat sources to heat the tobacco material, roast, and dry distill the nicotine and flavor substances contained in the tobacco material. Smoke is formed to meet the needs of smokers. At present, the main heating non-combustion tobacco products sold are electrically heated.
  • Electromagnetic induction heating converts a direct current into a high-frequency vibration current through an oscillating circuit.
  • the high-frequency oscillating current flows through an electromagnetic induction coil to generate a high-frequency alternating magnetic field.
  • magnetic metal materials can induce electromagnetic energy.
  • Electric charge eddy currents are generated on the surface.
  • the eddy currents cause metal atoms to move randomly at high speed.
  • the atoms collide with each other and rub against each other to generate heat energy, which has the effect of heating.
  • the heating efficiency of electromagnetic induction heating can reach 95%, the heating efficiency is high, and the heating element does not need to be connected to the power circuit, and the material loss during the heating process is small. It is a new type of tobacco product heating technology.
  • This electromagnetic induction heating technology can increase the power density of the heating device, realize that the heated cigarettes quickly reach the smoke release temperature, reduce the preheating time of the device, improve the heating energy conversion efficiency, extend the battery life of the heating device, and avoid and eliminate heating
  • the defect that the material is easily damaged makes maintenance more convenient and improves the consumer's experience.
  • electromagnetic heating technology since the induction heating material is not directly connected to the circuit system, the temperature measurement of the induction heating material has a lag, which is not conducive to the control of the working state of the device.
  • heat-not-burn tobacco products have very strict requirements on heating conditions, and the technical difficulties of heating control procedures affect the effect of electromagnetic induction heating devices in heat-not-burn tobacco products.
  • the object of the present invention is to provide a method for controlling the continuous emission of smoke from heat-not-burn tobacco products.
  • the present invention is achieved through the following technical solutions.
  • the invention relates to a method for controlling the continuous release of smoke from heating non-burning tobacco products.
  • the heating device used for heating non-burning tobacco products is carried out in a preheating phase and alternately circulating heat preservation and suction phases; the heating device is activated before suction to make it in the preheating phase, then the heating The appliance continues to output heating energy to quickly heat the tobacco material until a suitable first puff of smoke is produced; then, the output power of the heating device is immediately reduced to enter the heat preservation stage, and the heating device will only maintain the tobacco material Its temperature is to ensure that the tobacco material is in the critical state of smoke release.
  • supplementing energy can increase the temperature of the tobacco material, thereby quickly releasing sufficient smoke; then it enters the suction phase, when the heating device detects the suction signal
  • the output power is instantly increased to compensate for the temperature drop of the tobacco material caused by the smoking behavior, and the tobacco material is quickly heated to release smoke; the heating device makes the heating device alternately in position according to the monitoring result of its pressure sensor or temperature sensor In the heat preservation phase or suction phase, or stop the heating device.
  • the heating appliance includes a DC battery power supply, a high-frequency oscillation circuit, a control circuit, an electromagnetic induction coil, a heating cavity, a heating cavity protective shell, an appliance shell and an induction heating material, which are connected to the heating cavity
  • the air pressure sensor is installed at the location, and the temperature sensor is installed at the induction heating material; in this heating appliance, the air pressure sensor monitors the consumer’s suction behavior, while the temperature sensor monitors the temperature change of the induction heating material, and the control circuit receives these monitoring signals and
  • the output power of the heating appliance is regulated to achieve the effect of stably releasing flue gas.
  • the heating device outputs a power of 8-30W for 5-30s, so that the tobacco material is heated to a temperature of 220-380°C to release sufficient first puff
  • the smoking signal reminder emits a sound, light or mechanical vibration signal to remind the user that the preheating phase of the heating appliance has ended and smoking can begin.
  • the heating device is continuously output with a power of 1.5 to 6.0 W, so that the temperature of the tobacco material is maintained at 100 to 350°C.
  • the heating device outputs a power of 8-30W for 0.5-3.0s to heat the tobacco material and raise its temperature to 220-380°C.
  • the number of reciprocating cycles in the heat preservation phase and the suction phase is 5-20 times; when the number of reciprocating cycles reaches the number preset by the heating appliance control program, the heating appliance will automatically stop working.
  • the suction phase is started; the air pressure sensor is a thin-film air pressure sensor .
  • the temperature sensor when the heating device is in the heat preservation phase and the temperature sensor detects that the temperature decrease rate of the induction heating material is 5-80°C/s, the suction phase is started; the temperature sensor is a resistor Type temperature sensor or thermocouple type temperature sensor.
  • the heating device when the heating device is in the heat preservation stage for 30 to 60 seconds and no pressure change or temperature change is detected, the heating device automatically ends its work, or the heating device continues to work for 90 to 300 seconds or When the number of suction ports reaches 5 to 20, the heating appliance will automatically end its work to avoid continuous heating and damage to the appliance.
  • the heating device adjusts the operating voltage of the high-frequency oscillation circuit to 0-18V or adjusts the duty cycle index to 30-70% through the control circuit to adjust the output power.
  • the present invention establishes a heating program control method that relies on the energy compensation of the consumer's suction behavior.
  • the control method provides the electromagnetic induction heating device with supplementary appropriate energy in a segmented manner according to the consumer's suction behavior, thereby being able to effectively Improve the reasonableness of the heating temperature of the heating device, meet the requirements of sufficient and stable smoke release from heated non-burning tobacco products during the entire smoking process, and reduce the sidestream smoke overflow when not smoking, and reduce the pollution to the surrounding air environment .
  • the energy consumption of the heating device can be reduced, the endurance of the heating device can be improved, and the use experience of the electromagnetic induction heating device can be significantly improved.
  • the electromagnetic induction heating device should be understood as a heating device that uses electromagnetic induction heating to heat non-burning tobacco products.
  • the electromagnetic induction heater and the heating device have completely equivalent technical meanings in the present invention and can be used instead of each other.
  • the invention relates to a method for controlling the continuous release of smoke from heating non-burning tobacco products.
  • control method should be understood as a method for controlling the output energy of the heating device during the whole process of heating the cigarette, so that the smoke is uniformly and continuously released.
  • control method includes the steps of preheating, heat preservation, suction, and heating stop of the electromagnetic induction heating appliance.
  • control mode refer to FIG. 1.
  • the heating device used for heating non-burning tobacco products is heated in a pre-heating phase and an alternating cycle of heat preservation phase and suction phase.
  • the main purpose of setting the preheating stage is to allow the heating device to output enough energy to quickly heat the tobacco material, so that the tobacco material reaches a temperature condition that releases sufficient and stable smoke.
  • the heating device starts the heating device to make it in the preheating stage before pumping. At this time, the heating device continues to output heating energy to quickly heat the tobacco material until a suitable first puff of smoke is produced;
  • I represents the preheating stage I of the heating device
  • the solid line in the figure represents the power output of the heating device at this stage
  • the dotted line represents the temperature change of the heating device at this stage.
  • the heating device outputs 8-30W power for 5-30s to heat the tobacco material to a temperature of 220-380°C to release sufficient smoke; in the present invention, if the temperature of the tobacco material is low If the temperature is 220°C, the amount of smoke will be insufficient; if the temperature of the tobacco material is higher than 380°C, it will cause the tobacco to be over-cured and affect the smoking quality. Therefore, the temperature of the tobacco material is suitably 220-380°C, preferably 250-330°C.
  • the output power of the heating device is 8-30W. Increasing the output power of the heating device can effectively shorten the preheating time. If the output power is less than 8W, it will cause the heating device to warm up too long and affect the suction experience; if the output power is higher than 30W, it will cause excessive consumption of the heating device's circuit and affect the stability of the device. . Therefore, it is appropriate that the output power of the heating device is 8-30W, preferably 10-20W.
  • the time of this preheating stage I is 5-30s. It is also undesirable for the time of this preheating stage I to exceed the stated range, because if this time is less than 5s, the energy supply received by the material will be insufficient, and the amount of smoke produced by the first flue gas will be insufficient; if this time is longer than 30s, it will lead to a long waiting time for suction and affect the suction experience; therefore, it is advisable for the preheating stage I to have a time of 5-30s, preferably 10-20s.
  • the smoking signal reminder emits a sound, light or mechanical vibration signal to remind the user that the preheating phase I of the heating appliance has ended and smoking can be started.
  • the smoking signal reminder used in the present invention is a product currently on the market.
  • the audible smoking signal reminder is a product sold by Taizhou Fusheng Electronic Technology Co., Ltd. under the brand name patch buzzer, and a luminous smoking signal reminder It is a product sold by Shenzhen Juhong Optoelectronics Co., Ltd. under the trade name of LED patch light-emitting diodes.
  • the mechanical vibration smoking signal indicator is a product sold by Huizhou Librite Electromechanical Co., Ltd. under the trade name of micro vibration motor.
  • the main purpose of setting the heat preservation stage II is to maintain the tobacco material at a certain temperature to ensure that the tobacco material is in a critical state of smoke release. For example, supplementing energy can increase the temperature of the tobacco material, thereby quickly releasing sufficient smoke; specifically , In Figure 1, II represents the heat preservation stage II of the heating device.
  • the output power of the heating device is lower than that of the preheating stage I.
  • the heating device continuously outputs 1.5-6.0W power to maintain the temperature of the tobacco material at 100-350 °C.
  • the heating device output power is 1.5 ⁇ 6.0W and the tobacco material temperature is 100 ⁇ 350°C, preferably the heating device output power is 2.0 ⁇ 5.0W and the tobacco material temperature is 140 ⁇ 300°C, more preferably the heating device output power 2.6 ⁇ 4.2W and the temperature of tobacco material is 180 ⁇ 250°C.
  • the basic function of the puffing stage III is that the heating device immediately increases the output power when the puff signal is detected to compensate the temperature drop of the tobacco material caused by the smoking behavior, and at the same time quickly heat the tobacco material to release a large amount of smoke.
  • the heating device In the suction stage III, the heating device outputs a power of 8-30W for 0.5-3.0s to heat the tobacco material and raise its temperature to 220-380°C.
  • the output power of the heating device is higher than that of the heat preservation stage II, which can compensate the temperature drop of the tobacco material due to smoking, so that the tobacco material maintains a large amount of smoke and maintains the cigarette Stable suction effect.
  • the temperature of the tobacco material during the suction phase III is 220-380°C. If the temperature of the tobacco material is lower than 220°C, it will cause insufficient smoking of the tobacco material and reduce people's smoking experience; if the temperature of the tobacco material is higher than 350°C, it will cause the tobacco material to be over-cured, which will affect Suction quality. Therefore, it is appropriate that the tobacco material temperature in the smoking stage III is 220-380°C, preferably 280-350°C.
  • each suction phase III is 0.5 to 3 s, preferably 1 to 2 s. If the duration of the suction stage III is shorter than 0.5s, the heating device cannot provide enough energy for compensation, which will affect the smoking effect; if the duration of the suction stage III is longer than 3s, it will easily cause the heating device to overcompensate energy , So that the tobacco material is overheated, and also affects the quality of smoking.
  • the duration of the suction phase III is the time value of the suction action detected by the air pressure sensor or the temperature sensor, or the duration value of the suction phase III preset in the power control program, according to these duration values
  • the programming microcontroller chip recognizes and issues instructions to control the suction phase III to stop by reducing the power value to 1.6 ⁇ 6.0w.
  • the programmable microcontroller chip recognizes and issues instructions to instantly increase the output power value of the power supply circuit to 8 ⁇ 30w, start the suction phase III; in the present invention, if the pressure drop detected by the air pressure sensor is less than 50Pa, it will easily cause the suction behavior signal to be falsely activated and start the suction phase III prematurely; if the air pressure When the pressure drop change value detected by the sensor is higher than 1000Pa, the pressure drop change value is too high, and it is not easy to cause the suction behavior signal to activate.
  • the programmable microcontroller chip judges according to the detection signal of the air pressure sensor, the deviation of the preset temperature range and the pressure drop caused by the consumer's suction behavior to compensate for the output power when the change value is 50 to 1000 Pa, and the heating appliance works When the pressure is maintained within the preset range, the device enters the suction phase III.
  • the air pressure sensor used in the present invention is a thin-film air pressure sensor, which is a product currently on the market, such as the pressure sensor sold by Shenzhen Yinsun Technology Co., Ltd. under the trade name of microphone switch.
  • the programmable microcontroller chip used in the present invention is a product currently on the market, for example, a RISC, CISC, DSP or ARM type microcontroller chip currently on the market.
  • the programmable microcontroller chip recognizes and issues instructions to increase the battery power output value to 8 ⁇ 8. 30w starts the suction phase III; in the present invention, if the temperature decrease rate detected by the temperature sensor is lower than 5°C/s, it will easily cause the suction behavior signal to be falsely activated, if the temperature decrease rate detected by the temperature sensor is higher than 80°C /s, it is not easy to cause the activation of the pumping behavior signal.
  • the programmable microcontroller chip judges according to the detection signal of the temperature sensor, the output power compensation is performed when the temperature deviates from the preset temperature range and the temperature decrease rate caused by the consumer's suction behavior reaches 10 to 80°C/s, and the device works When the temperature is maintained within the preset range, the device enters the suction phase III.
  • the temperature sensor used in the present invention is a resistance temperature sensor or a thermocouple temperature sensor. They are all products currently on the market.
  • the resistance temperature sensor sold by Ninghai Huashen Electronics Co., Ltd. under the trade name HS-T6 resistive high-precision temperature sensor is sold under the trade name by Dongguan Meixin Automation Technology Co., Ltd.
  • Thermocouple temperature sensor sold by thermistor is sold by thermistor.
  • the heating device When the heating device is in the heat preservation stage II for 30-60 seconds and no pressure change or temperature change is detected, the heating device automatically ends its work. In the present invention, if the time of the heat preservation stage II is shorter than 30s, it will easily cause the heating device to stop accidentally; if the time of the heat preservation stage II is longer than 60s, it will cause the heating device to continue heating time longer, and the heating device consumes too much energy And easily damaged. or,
  • the heating device When the heating device continues to work for 90-300s in the heat preservation stage II or the number of suction ports reaches 5-20, it also automatically ends to work to avoid continuous heating causing damage to the device.
  • Using this control method can prevent the heating device from heating for a long time, consuming energy and causing damage, and at the same time avoiding the tobacco material from being heated for too long, which affects the amount of smoke and the quality of suction.
  • the heating device can also be stopped by a manual switch.
  • the heating device is alternately in the heat preservation stage II or the suction stage III, or the heating device is stopped.
  • the suction phase III and the heat preservation phase II are alternately connected to each other.
  • FIG. 1 It can be seen from Figure 1 that the heat preservation phase II starts immediately after the preheating phase I ends, and ends after the next suction phase III starts. After the next suction phase III ends, the heating device enters the next heat preservation phase II, and In this way, it reciprocates until the heating device stops working.
  • the number of reciprocating cycles of the heat preservation phase II and the suction phase III is 5-20 times; when the number of reciprocating cycles reaches the preset number of the heating appliance control program, the heating appliance will automatically stop working.
  • the number of cycles is less than 5 times, the number of puffs of the cigarette will be insufficient, which will affect the consumption experience; if the number of cycles is more than 20 times, it will result in insufficient smoke release in the later stage. Therefore, it is appropriate that the number of cycles is 5-20 times, preferably 8-15 times.
  • the number of cycles can be determined by the consumer's smoking behavior or when the number of cycles reaches the number preset by the heating device control program, the heating device will automatically stop working, so as to maintain a stable smoke release effect for each number of puffs of the cigarette.
  • the heating appliance includes a DC battery power supply, a high-frequency oscillation circuit, a control circuit, an electromagnetic induction coil, a heating cavity, a heating cavity protective shell, an appliance shell and an induction heating material, and an air pressure sensor is installed at the communicating position of the heating cavity, Install a temperature sensor at the induction heating material; in the heating appliance, the air pressure sensor monitors the consumer's suction behavior, and the temperature sensor monitors the temperature change of the induction heating material, and the control circuit receives these monitoring signals and outputs power of the heating appliance Perform regulation to achieve the effect of stably releasing smoke.
  • FIG. 2 for the specific structure of the heating device.
  • the DC battery power supply, the high-frequency oscillation circuit and the electromagnetic induction coil are connected in sequence to implement the working current transmission;
  • the control circuit is respectively connected with the DC battery power supply, the high-frequency oscillation circuit, the air pressure sensor and the temperature sensor for signal circuits to implement the operation control of the device; :
  • the DC battery power supply is currently on the market of lithium batteries, lithium ion batteries, cadmium nickel batteries or nickel hydrogen batteries;
  • the high frequency oscillation circuit is currently on the market MOSFET gold oxide half field effect transistor, IGBT insulated gate bipolar transistor or IGFET insulated gate field effect transistors, they can convert the direct current output by the direct current battery power supply into a high-frequency oscillating current with a frequency of 10-999KHz;
  • the control circuit is controlled by the power output/time curve prefabricated by its programmable microcontroller chip.
  • the programmable microcontroller chip is a RISC, CISC, DSP or ARM type microcontroller chip currently on the market.
  • the control circuit used in the present invention is composed of the aforementioned control chip as the core and connected with temperature and pressure sensors.
  • the electromagnetic induction coil, heating chamber, heating chamber protective shell, appliance shell and induction heating material used in the present invention are all commonly used components in the technical field.
  • any other electromagnetic induction heating device for cigarettes that has a similar structure and has the same function and has no negative influence on the device can also be used in the present invention, and they are also within the protection scope of the present invention.
  • the heating device adjusts the operating voltage of the high-frequency oscillation circuit to 0-18V or adjusts the duty cycle index to 30-70% through the control circuit to realize the adjustment of the output power.
  • the operating voltage adjustment is realized by the boosting element of the control circuit.
  • the duty cycle index adjustment is achieved by adjusting the output power of the device by adjusting the PWM duty cycle adjustment program of the control circuit and the circuit input current gap to increase or decrease the effective working time of the device.
  • Duty cycle refers to the percentage of the time that the circuit is turned on in the overall circuit duty cycle. For example, if a circuit is turned on for half of its duty cycle, its duty cycle is 50%. If the signal voltage applied to the working element is 5V, then the actual working voltage average value or voltage effective value is 2.5V.
  • a smoking evaluation team composed of 7 smoking evaluation experts, used the electromagnetic heating device for cigarettes of the present invention and its supporting cigarettes for smoking, and evaluated according to the YCT138-1998 cigarette sensory evaluation standard
  • the evaluation results show that the control method of the present invention can control the number of suction mouths to achieve continuous work for 90-300s or the number of suction mouths to 5-20 mouths, sufficient smoke volume, little irritation, clean aftertaste, and no obvious impurities and residues ,
  • the strength is moderate, the flue gas temperature is moderate, no burning sensation, and no flow of flue gas is emitted when not inhaling.
  • the electromagnetic induction heating appliance system of the present invention solves the technical problems caused by the continuous high power output of electromagnetic heating, which causes the tobacco material to be overheated, which affects the taste of suction and the loss of heating temperature during suction. While reducing the energy consumption of the device, it can also control the power output in real time, achieving the effect of flexibly regulating the temperature and ensuring the quality of the flue gas.
  • This control method can control the number of sample suction ports, with sufficient amount of flue gas, low irritation, clean aftertaste, no obvious impurities and residues, moderate strength, moderate flue gas temperature and no burning sensation, and no flow of flue gas when not inhaled issue.
  • Figure 1 is a graph of the power output and working temperature of the electromagnetic induction heating device of the present invention:
  • FIG. 2 is a schematic diagram of the structure of the electromagnetic induction heating device of the present invention.
  • I-preheating stage I-preheating stage; II-heat preservation stage; III-suction stage; 1-DC battery power supply; 2-high frequency oscillation circuit; 3-control circuit; 4-electromagnetic induction coil; 5-heating chamber; 6-heating chamber protective shell; 7-apparatus shell; 8-induction heating material; 9-air pressure sensor; 10-temperature sensor; 11-smoking signal reminder.
  • Example 1 Control of the continuous release of smoke from heat-not-burn tobacco products
  • This embodiment uses the heating device described in Figure 2, in which the DC battery power supply 1 is a lithium battery; the high-frequency oscillation circuit 2 is a MOSFET metal oxide half field effect transistor; the control circuit 3 is produced by Dongguan Daixun Electronic Technology Co., Ltd. under the trade name The product sold by NRF51822-QFAB micro-processing chip; the air pressure sensor 9 is a product sold by Shenzhen Yinsun Technology Co., Ltd.
  • the magnetic induction coil 4 is a winding distance of 0.4mm, a length of 1800mm, a diameter of 12mm, and working voltage 2V electromagnetic induction coil
  • heating cavity 5 is a cylindrical cavity with an inner diameter of 6mm, a length of 32mm, and a wall thickness of 2.0mm
  • the electromagnetic heating cavity protective shell 6 is made of silicon dioxide
  • the appliance shell 7 is made of polyethylene
  • the induction heating material 8 is made of pure iron material sold under the trade name electromagnetic pure iron by Shanghai Shuangcheng Trading Co., Ltd.
  • the heating device is heated by preheating stage I and alternately circulating heat preservation stage II and suction stage III; start the heating device before suction to make it in preheating stage I, at this time, the heating device is 8W
  • the power output is 30s, so that the tobacco material is heated to a temperature of 284°C to release sufficient smoke; the heating appliance regulates the working voltage of the high-frequency oscillation circuit 2 to 0V through the control circuit 3 to realize the adjustment of the output power;
  • the smoking signal reminder 11 sold by Taizhou Fusheng Electronic Technology Co., Ltd. under the trade name patch buzzer emits an audible signal to remind the user that the preheating phase I of the heating appliance has ended. Start smoking.
  • the heating device continuously outputs at 5.1W power to maintain the temperature of the tobacco material at 300°C, so that the tobacco material maintains its temperature to ensure that the tobacco material
  • the material is in a critical state of smoke release. For example, supplementing energy can increase the temperature of the tobacco material, thereby quickly releasing sufficient smoke;
  • the heating device outputs 12.4W power for 1.0s to heat the tobacco material and increase its temperature to 252°C; the heating device instantly increases the output power when it detects the suction signal to compensate The temperature of the tobacco material drops due to the smoking behavior, and the tobacco material is quickly heated to release smoke;
  • the heating device starts the suction phase III when the pressure drop detected by the pressure sensor air pressure sensor 9 reaches 50 Pa/s, and the heating device is alternately in the heat preservation phase II or the suction phase III according to the monitoring results.
  • the number of reciprocating cycles between the heat preservation phase II and the suction phase III is 5 times, and then the heating device automatically ends its work;
  • the evaluation results show that this embodiment can control the number of sample suction mouths to 12, with sufficient smoke volume, low irritation, clean aftertaste, no obvious fumes and residues, and moderate energy.
  • the temperature of the flue gas is moderate without burning sensation, and no flow of flue gas is emitted when not inhaling.
  • Example 2 Control of the continuous release of smoke from heat-not-burn tobacco products
  • the implementation of this embodiment is the same as that of Example 1, except that the DC battery power supply 1 is a lithium ion battery; the high-frequency oscillation circuit 2 is an IGBT insulated gate bipolar transistor; the temperature sensor 10 is manufactured by Ninghai Huashen Electronics Co., Ltd. The resistance temperature sensor sold by the company under the trade name HS-T6 resistance type high precision temperature sensor;
  • the heating device In the preheating stage I, the heating device outputs 12W power for 25s to heat the tobacco material to a temperature of 316°C to release sufficient smoke; the heating device regulates the working voltage of the high-frequency oscillation circuit 2 through the control circuit 3 to 9V realizes the adjustment of the output power; at the end of the warm-up phase I, the smoking signal reminder 11 sold by Shenzhen Juhong Optoelectronics Co., Ltd. under the trade name LED patch light-emitting diode emits a light signal;
  • the heating device continuously outputs 6.0W power to maintain the temperature of the tobacco material at 350°C;
  • the heating device outputs 16.8W power for 1.5s to heat the tobacco material and raise its temperature to 284°C;
  • the heating device starts the suction stage III when the pressure drop detected by the pressure sensor air pressure sensor 9 reaches 510 Pa/s, and the heating device is alternately in the heat preservation stage II or the suction stage III according to the monitoring results.
  • the number of reciprocating cycles between the holding stage II and the suction stage III is 8;
  • Example 3 Control of the continuous release of smoke from heat-not-burn tobacco products
  • the implementation of this embodiment is the same as that of Example 1, except that the DC battery power supply 1 is a nickel-cadmium battery; the high-frequency oscillation circuit 2 is an IGFET insulated gate field effect transistor; the temperature sensor 10 is manufactured by Dongguan Meixin Automation Technology The thermocouple temperature sensor sold by the company under the trade name thermistor;
  • the heating device In the preheating stage I, the heating device outputs 18W power for 20s to heat the tobacco material to a temperature of 348°C to release sufficient smoke; the heating device regulates the working voltage of the high-frequency oscillation circuit 2 through the control circuit 3 to 18V; at the end of warm-up phase I, the mechanical vibration smoking signal reminder is a smoking signal reminder 11 sold by Huizhou Librite Electromechanical Co., Ltd. under the trade name of micro vibration motor to send out mechanical vibration signals;
  • the heating device continuously outputs 1.5W power to maintain the temperature of the tobacco material at 100°C;
  • the heating device outputs 21.2W for 2.0s to heat the tobacco material and raise its temperature to 316°C;
  • the heating device starts the suction phase III when the pressure drop detected by the pressure sensor air pressure sensor 9 reaches 1000 Pa/s, and the heating device is alternately in the heat preservation phase II or the suction phase III according to the monitoring results.
  • the number of reciprocating cycles between the holding phase II and the suction phase III is 11;
  • Example 4 Control of the continuous release of smoke from heat-not-burn tobacco products
  • the implementation of this embodiment is the same as that of Example 1, except that the DC battery power supply 1 is a nickel-metal hydride battery; the high-frequency oscillation circuit 2 is an IGBT insulated gate bipolar transistor; the air pressure sensor 9 is made by Shenzhen Yinsun Technology Products sold by the company under the trade name microphone switch;
  • the heating device In preheating stage I, the heating device outputs 15s with a power of 22W to heat the tobacco material to a temperature of 220°C to release sufficient smoke; the heating device adjusts the duty cycle index to 30% to adjust the output power ;
  • the smoking signal reminder 11 sold by Shenzhen Juhong Optoelectronics Co., Ltd. under the trade name LED patch light-emitting diode emits a light signal;
  • the heating device continuously outputs 2.4W power to maintain the temperature of the tobacco material at 150°C;
  • the heating device outputs 8.0W power for 0.5s to heat the tobacco material and raise its temperature to 220°C;
  • the heating device starts the suction stage III when the temperature sensor 10 detects that the temperature decrease rate of the induction heating material 8 is 5°C/s, and according to the monitoring result, the heating device is alternately in the heat preservation stage II or the suction stage III, The number of reciprocating cycles between the holding phase II and the suction phase III is 14;
  • Example 5 Control of the sustained release of smoke from heat-not-burn tobacco products
  • the implementation of this embodiment is the same as that of Example 1, except that the DC battery power supply 1 is a lithium-ion battery; the high-frequency oscillation circuit 2 is a MOSFET metal oxide half field effect transistor; the temperature sensor 10 is made by Dongguan Meixin Automation Technology The thermocouple temperature sensor sold by the company under the trade name thermistor;
  • the heating device In preheating stage I, the heating device outputs 26W power for 10s to heat the tobacco material to a temperature of 252°C to release sufficient smoke; the heating device adjusts the duty cycle index to 50% to adjust the output power ;
  • the smoking signal reminder 11 sold by Huizhou Librite Electromechanical Co., Ltd. under the trade name of Micro Vibration Motor sends out a mechanical vibration signal;
  • the heating device continuously outputs 3.3W power to maintain the temperature of the tobacco material at 200°C;
  • the heating device outputs 25.6W power for 2.5s to heat the tobacco material and raise its temperature to 348°C;
  • the heating device starts the suction stage III when the temperature sensor 10 detects that the temperature decrease rate of the induction heating material 8 is 42°C/s, and according to the monitoring result, the heating device is alternately in the heat preservation stage II or the suction stage III , The number of reciprocating cycles between the holding stage II and the suction stage III is 17;
  • Example 6 Control of the continuous release of smoke from heat-not-burn tobacco products
  • the implementation of this embodiment is the same as that of Example 1, except that the DC battery power supply 1 is a nickel-hydrogen battery; the high-frequency oscillation circuit 2 is a MOSFET gold-oxygen half-field effect transistor; the temperature sensor 10 is manufactured by Ninghai Huashen Electronics Co., Ltd. The resistance temperature sensor sold by the company under the trade name HS-T6 resistance type high precision temperature sensor;
  • the heating device In the preheating stage I, the heating device outputs 30W power for 5s to heat the tobacco material to a temperature of 380°C to release sufficient smoke; the heating device adjusts the duty cycle index to 70% to adjust the output power ; At the end of the warm-up phase I, the smoking signal reminder 11 sold by Taizhou Fusheng Electronic Technology Co., Ltd. under the brand name patch buzzer emits a sound signal;
  • the heating device continuously outputs 4.2W to maintain the temperature of the tobacco material at 250°C;
  • the heating device In the suction phase III, the heating device outputs 30.0W power for 3.0s to heat the tobacco material and raise its temperature to 380°C;
  • the heating device starts the suction stage III when the temperature sensor 10 detects that the temperature decrease rate of the induction heating material 8 is 80°C/s, and according to the monitoring result, the heating device is alternately in the heat preservation stage II or the suction stage III ,
  • the number of reciprocating cycles between the holding stage II and the suction stage III is 20;

Abstract

本发明涉及一种加热不燃烧烟草制品烟气持续释放的控制方法，这种控制方法是该加热器具是以预热阶段以及交替循环的保温阶段与抽吸阶段的加热方式进行的，这种保温阶段与抽吸阶段的往复循环次数是5～20次。采用这种控制方法能够控制抽吸口数，烟气量充足、刺激小、余味干净、无明显杂气与残留、劲头适中，烟气温度适中无灼热感，在不抽吸时无测流烟气发出。

Description

一种加热不燃烧烟草制品烟气持续释放的控制方法 【技术领域】
本发明属于加热不燃烧卷烟技术领域。更具体地，本发明涉及一种加热不燃烧烟草制品烟气持续释放的控制方法。
【背景技术】
加热不燃烧烟草制品是一种利用特殊热源对烟草物料进行加热的烟草制品，它的加热温度最高不超过500℃，因而减少了烟草化学成分热裂解与不完全燃烧反应，烟气中的有害化学成分和生物毒性大幅降低，从而显著减少了对人体和环境的危害。加热不燃烧烟草制品根据加热方式的不同分为电加热型、理化反应加热型、燃料加热型等，这些产品均是通过外部热源加热烟草物料，烘烤，将烟草物料含有的尼古丁和香味物质干馏形成烟雾，以满足吸烟者的需求。目前主要销售的加热不燃烧烟草制品是电加热型的，这些产品大多选用电阻式加热技术，传热效率低，烟气释放均匀性有待提升且加热完成后腔体中残留物质多，影响抽吸感受，并且电阻式加热元件在重复使用后容易积碳，难以清洁且容易损坏，影响消费者的使用体验。
电磁感应加热是通过振荡电路将直流电流转化成为高频振动电流，高频振荡电流流经电磁感应线圈后产生高频交变磁场，而在交变磁场中磁性金属材料可以感应电磁能量，在其表面产生电荷涡流，涡流使金属原子高速无规则运动，原子互相碰撞、摩擦而产生热能，于是起到加热的效果。电磁感应加热热效率可以达到95％，其升温效率高，且加热元件无需与电源电路连接，加热过程中材料耗损小，是一种新型的烟草制品加热技术。
这种电磁感应加热技术可以提高加热装置的功率密度，实现被加热烟支快速达到烟气释放温度，减少装置预热时间，提高加热能量转化效率，延长加热装置的电池续航时间，避免与消除加热材料容易损坏的缺陷，维护保养更加便捷，提高了消费者的使用体验。但是，电磁加热技术由于感应加热材料不与电路系统直接连接，因此对感应加热材料的温度测量存在滞后，不利于装置工作状态的调控。而加热不燃烧烟草制品对加热条件要求非常严苛，加热控制程序的技术困难影响电磁感应加热装置在加热不燃烧烟草制品中的使用效果。
因此，针对电磁感应加热装置的技术特征与加热不燃烧烟草制品配套技术要求，本发明人在现有技术的基础之上经过大量实验研究与分析总结，终于完成了本发明。
【发明内容】
[要解决的技术问题]
本发明的目的是提供一种加热不燃烧烟草制品烟气持续释放的控制方法。
[技术方案]
本发明是通过下述技术方案实现的。
本发明涉及一种加热不燃烧烟草制品烟气持续释放的控制方法。
该控制方法的步骤如下：
用于加热不燃烧烟草制品的加热器具是以预热阶段以及交替循环的保温阶段与抽吸阶段的加热方式进行的；在抽吸前启动该加热器具使其处于预热阶段，这时该加热器具持续输出加热能量，使烟草物料快速加热，直至产生适宜的第一口烟气；然后，立即让该加热器具的输出功率降低而使其进入保温阶段，这时加热器具只是将使烟草物料维持其温度，以保证烟草物料处于烟气释放的临界状态，如补充能量就能提高烟草物料温度，从而迅速释放出充足的烟气；接着进入抽吸阶段，这时加热器具在检测到抽吸信号时就瞬时提高输出功率，补偿因抽吸行为所导致的烟草物料温度下降，并快速加热烟草物料而释放烟气；该加热器具根据其压力传感器或温度传感器的监测结果而使该加热器具交替处于保温阶段或抽吸阶段，或者使该加热器具停止工作。
根据本发明的一种优选实施方式，该加热器具包括直流电池电源、高频振荡电路、控制电路、电磁感应线圈、加热腔、加热腔保护壳、器具外壳与感应加热材料，在加热腔的连通位置安装空气压力传感器，在感应加热材料处安装温度传感器；在该加热器具中，空气压力传感器监测消费者的抽吸行为，而温度传感器监测感应加热材料的温度变化，控制电路接受这些监测信号并对加热器具的输出功率进行调控，以达到稳定释放烟气的效果。
根据本发明的另一种优选实施方式，在预热阶段时，该加热器具以8～30W功率输出5～30s，使烟草物料加热达到温度220～380℃，以释放出充足的第一口烟气；在预热阶段结束时由吸烟信号提示器发出声、光或者机械振动信号，提示使用者该加热器具的预热阶段已结束，可以开始吸烟。
根据本发明的另一种优选实施方式，在保温阶段时，该加热器具以1.5～6.0W功率连续输出，使烟草物料的温度维持在100～350℃。
根据本发明的另一种优选实施方式，在抽吸阶段时，该加热器具以8～30W功率输出0.5～3.0s，使烟草物料加热，将其温度升高至220～380℃。
根据本发明的另一种优选实施方式，保温阶段与抽吸阶段的往复循环次数是5～20次；该 往复循环次数达到加热器具控制程序预设的次数时，该加热器具将自动停止工作。
根据本发明的另一种优选实施方式，当加热器具处于保温阶段且空气压力传感器检测的压力降低变化值达到50～1000Pa时就启动抽吸阶段；所述的空气压力传感器是薄膜型空气压力传感器。
根据本发明的另一种优选实施方式，当加热器具处于保温阶段且温度传感器检测到感应加热材料的温度降低速率为5-80℃/s时就启动抽吸阶段；所述的温度传感器是电阻式温度传感器或热电偶式温度传感器。
根据本发明的另一种优选实施方式，该加热器具处于保温阶段的时间为30～60s且未检测到压力变化或者温度变化时，该加热器具自动结束工作，或者加热器具持续工作90～300s或抽吸口数达到5～20口时，该加热器具也自动结束工作，以避免持续加热导致器具损坏。
根据本发明的另一种优选实施方式，该加热器具通过控制电路将高频振荡电路的工作电压调控至0～18V或者将占空比指数调控至30～70％实现对输出功率的调整。
下面将更详细地描述本发明。
本发明建立了一种依托于消费者抽吸行为的能量补偿的加热程序控制方法，该控制方法根据消费者的抽吸行为以分段方式给予电磁感应加热器具补充适当的能量，从而能够有效地提高该加热器具加热温度的合理性，满足在整个抽吸过程中加热不燃烧烟草制品烟气释放充足与稳定的要求，且降低不抽吸时侧流烟气外溢，减少对周边空气环境的污染。此外还能够降低加热器具的能量耗损，提高加热器具的续航能力，显著提升电磁感应加热器具的使用感受。
在本发明中，电磁感应加热器具应该理解是一种采用电磁感应加热方式加热不燃烧烟草制品的加热器具。
在本发明中，电磁感应加热器与加热器具在本发明中具有完全等同的技术含意，可以相互代替使用。
本发明涉及一种加热不燃烧烟草制品烟气持续释放的控制方法。
在本发明中，所述的控制方法应该理解是一种在烟支加热全过程中控制加热器具输出能量，使烟气均匀持续释放的方法。具体地，该控制方法包括电磁感应加热器具的预热阶段、保温阶段、抽吸阶段与停止加热等步骤，具体控制模式参见附图1。
该控制方法的步骤如下：
用于加热不燃烧烟草制品的加热器具是以预热阶段以及交替循环的保温阶段与抽吸阶段的加热方式进行的。
根据本发明，设置预热阶段的主要目的是让该加热器具输出足够的能量，以便快速加热烟草物料，使烟草物料达到释放出充足与稳定烟气的温度条件。
在抽吸前启动该加热器具使其处于预热阶段，这时该加热器具持续输出加热能量，使烟草物料快速加热，直至产生适宜的第一口烟气；
在附图1中，I表示该加热器具的预热阶段I，图中实线表示该加热器具在这个阶段的功率输出情况；虚线表示该加热器具在这个阶段的温度变化情况。
在预热阶段I时，该加热器具以8～30W功率输出5～30s，使烟草物料加热达到温度220～380℃，以释放出充足的烟气；在本发明中，如果烟草物料的温度低于220℃，则会导致发烟量不足；如果烟草物料温度高于380℃，则会导致烟丝被过度烘烤，影响抽吸品质。因此，烟草物料温度为220～380℃是合适的，优选地是250～330℃。
在预热阶段I该加热器具的输出功率是8～30W。提高该加热器具的输出功率可以有效地缩短预热时间。如果该输出功率低于8W，则会导致加热器具预热时间过长，影响抽吸感受；如果该输出功率高于30W，则会对其加热器具的电路造成过度耗损，影响装置的使用稳定性。因此，该加热器具的输出功率为8～30W是恰当的，优选地是10～20W。
该预热阶段I的时间是5～30s。该预热阶段I的时间超过所述的范围也是不可取的，因为如果这个时间低于5s，则会导致物料接收的能量供给不足，第一口烟气的发烟量不足；如果这个时间长于30s，则会导致抽吸等待时间过长、影响抽吸体验；因此，该预热阶段I的时间为5～30s是可取的，优选地是10～20s。
在预热阶段I结束时由吸烟信号提示器发出声、光或者机械振动信号，提示使用者该加热器具的预热阶段I已结束，可以开始吸烟。
本发明使用的吸烟信号提示器都是目前市场上销售的产品，例如发声吸烟信号提示器是由泰州福声电子科技有限公司以商品名贴片式蜂鸣器销售的产品、发光吸烟信号提示器是由深圳市巨弘光电有限公司商品名LED贴片发光二极管销售的产品、机械振动吸烟信号提示器是由惠州力博瑞特机电有限公司公司以商品名微型震动马达销售的产品。
然后，立即让该加热器具的输出功率降低而使其进入保温阶段II。
设置保温阶段II的主要目的是使烟草物料维持在一定的温度，以保证烟草物料处于烟气释放的临界状态，如补充能量就能提高烟草物料温度，从而迅速释放出充足的烟气；具体地，在附图1中II表示该加热器具的保温阶段II。
由附图1可以看出，在保温阶段II时，该加热器具输出的功率比预热阶段I的低，该加热器具以1.5～6.0W功率连续输出，使烟草物料的温度维持在100～350℃。
在本发明保温阶段II时，如果该加热器具输出的功率低于1.5W，则会导致烟草物料温度低于100℃，不能使其烟草物料持续发烟，影响抽吸感受；如果该加热器具输出的功率高于6.0W，则易导致烟草物料温度超过350℃，烟草物料被过度烘烤，影响其烟气质量与烟气释放的持久性。因此，加热器具输出功率1.5～6.0W与烟草物料温度100～350℃是合理的，优选地是加热器具输出功率2.0～5.0W与烟草物料温度140～300℃，更优选地是加热器具输出功率2.6～4.2W与烟草物料温度180～250℃。
在保温阶段II之后接着进入抽吸阶段III。抽吸阶段III的基本作用是该加热器具在检测到抽吸信号时就立即提高输出功率，补偿因抽吸行为所导致的烟草物料温度下降，同时快速加热烟草物料而释放大量烟气。
在抽吸阶段III时，该加热器具以8～30W功率输出0.5～3.0s，使烟草物料加热，将其温度升高至220～380℃。
在抽吸阶段III时，该加热器具输出的功率比保温阶段II的高，这样能够对烟草物料因抽吸造成其温度下降进行热量补偿，使烟草物料保持大的发烟量，维持烟支的稳定抽吸效果。在抽吸阶段III时烟草物料的温度是220～380℃。如果烟草物料的温度低于220℃，则会导致烟草物料的发烟量不足，降低人们抽吸感受；如果烟草物料的温度高于350℃，则会导致烟草物料被过度烘烤，从而会影响抽吸品质。因此，在抽吸阶段III时的烟草物料温度为220～380℃是恰当的，优选地是280～350℃。
每个抽吸阶段III的持续时间是0.5～3s，优选地是1～2s。如果抽吸阶段III的持续时间短于0.5s，则该加热器具不能提供足够能量进行补偿，因而影响发烟效果；如果抽吸阶段III的持续时间长于3s，则容易导致该加热器具能量补偿过度，使烟草物料过度加热，也影响抽吸质量。
抽吸阶段III的持续时间是空气压力传感器或温度传感器所检测到的抽吸行为时间值，或者是在功率控制程序中预设的抽吸阶段III的持续时间值，根据这些持续时间值由可编程微控制器芯片识别并发出指令通过降低功率值至1.6～6.0w控制抽吸阶段III停止。
在本发明中，当该加热器具处于保温阶段II且空气压力传感器检测的压力降低变化值达到50～1000Pa时，可编程微控制器芯片识别并发出指令通过瞬时提高电源电路的输出功率值至8～30w，启动抽吸阶段III；在本发明中，如果空气压力传感器检测的压力降低变化值低于50Pa时，则容易导致抽吸行为信号误激活，过早启动抽吸阶段III；如果空气压力传感器检测的压力降低变化值高于1000Pa时，则压力降低变化值偏高，不容易导致抽吸行为信号激活。具体地，可编程微控制器芯片根据空气压力传感器的检 测信号判断，偏离预设温度范围和由消费者抽吸行为导致压力降低变化值在50～1000Pa时进行输出功率的补偿，在加热器具工作压力维持在预设的范围内时，使该装置进入抽吸阶段III。
本发明使用的空气压力传感器是薄膜型空气压力传感器，它是目前市场上销售的产品，例如由深圳市银太阳科技有限公司以商品名咪头开关销售的压力传感器。本发明使用的可编程微控制器芯片是目前市场上销售的产品，例如目前市场上销售的RISC、CISC、DSP或ARM类型微控制器芯片。
在本发明中，当该加热器具处于保温阶段II且温度传感器检测的温度降低速率达到5～80℃/s时，可编程微控制器芯片识别并发出指令通过瞬时提高电池功率输出值至8～30w启动抽吸阶段III；在本发明中，如果温度传感器检测的温度降低速率低于5℃/s时，则容易导致抽吸行为信号误激活，如果温度传感器检测的温度降低速率高于80℃/s时，则不容易导致抽吸行为信号激活。具体地，可编程微控制器芯片根据温度传感器的检测信号判断，偏离预设温度范围和由消费者抽吸行为导致温度降低速率达到10～80℃/s时进行输出功率补偿，在该装置工作温度维持在预设的范围内时，使该装置进入抽吸阶段III。
本发明使用的温度传感器是电阻式温度传感器或者热电偶式温度传感器。它们都是目前市场上销售的产品，例如由宁海县华深电子有限公司以商品名HS-T6电阻式高精度温度传感器销售的电阻式温度传感器，由东莞市美鑫自动化科技有限公司以商品名热敏电阻销售的热电偶式温度传感器。
该加热器具处于保温阶段II的时间为30～60s且未检测到压力变化或者温度变化时，该加热器具自动结束工作。在本发明中，如果保温阶段II的时间短于30s，则容易导致该加热器具误停机；如果保温阶段II的时间长于60s，则会导致该加热器具持续加热时间延长，加热器具耗损能量过多且易损坏。或者，
该加热器具在保温阶段II持续工作90～300s或抽吸口数达到5～20口时，它也自动结束工作，以避免持续加热导致器具损坏。使用该控制方法可以避免加热器具持续加热时间过长，耗损能量并导致损坏，同时也避免烟草物料被加热过长时间，影响烟雾量和抽吸质量。该加热器具也可通过人工开关进行工作的停止。
该加热器具根据其压力传感器或温度传感器的监测结果而使该加热器具交替处于保温阶段II或抽吸阶段III，或者使该加热器具停止工作。根据本发明，抽吸阶段III与保温阶段II相互交替衔接，具体情况参见附图1。由附图1可知，保温阶段II在预热阶段I结束后立即启动，并在下一个抽吸阶段III启动后结束，在下一个抽吸阶段III 结束后，该加热器具进入下一个保温阶段II，并以这种方式循环往复直到加热装置停止工作。
保温阶段II与抽吸阶段III的往复循环次数是5～20次；该往复循环次数达到加热器具控制程序预设的次数时，该加热器具将自动停止工作。在本发明中，如果这个循环次数低于5次，则会导致烟支的抽吸口数不足，影响消费体验；如果这个循环次数多于20次，则会导致后段烟气释放不足。因此，这个循环次数为5～20次是合适的，优选地是8～15次。这个循环次数可由消费者抽吸行为决定或者在循环次数到达加热装置控制程序预设的次数后，加热装置自动停止工作，以达到维持烟支的各抽吸口数具有稳定的烟气释放效果。
根据本发明，该加热器具包括直流电池电源、高频振荡电路、控制电路、电磁感应线圈、加热腔、加热腔保护壳、器具外壳与感应加热材料，在加热腔的连通位置安装空气压力传感器，在感应加热材料处安装温度传感器；在该加热器具中，空气压力传感器监测消费者的抽吸行为，而温度传感器监测感应加热材料的温度变化，控制电路接受这些监测信号并对加热器具的输出功率进行调控，以达到稳定释放烟气的效果。该加热器具的具体结构参见附图2。
直流电池电源、高频振荡电路与电磁感应线圈依次连接实施工作电流传输；控制电路分别与直流电池电源、高频振荡电路、空气压力传感器与温度传感器进行信号电路连接，实施该装置运行控制；其中：
直流电池电源是目前市场上销售的锂电池、锂离子电池、镉镍电池或镍氢电池；高频振荡电路是目前市场上销售的MOSFET金氧半场效晶体管、IGBT绝缘栅双极型晶体管或IGFET绝缘栅极场效晶体管，它们能够将直流电池电源输出的直流电转化成频率为10～999KHz的高频震荡电流；
控制电路通过其可编程微控制器芯片预制的功率输出/时间曲线进行控制，可编程微控制器芯片是目前市场上销售的RISC、CISC、DSP或ARM类型微控制器芯片。本发明使用的控制电路是由上述控制芯片为核心并连接温度与压力传感器构成的。
本发明使用的电磁感应线圈、加热腔、加热腔保护壳、器具外壳与感应加热材料都是本技术领域里通常使用的部件。
当然，凡是具有类似结构并且具有相同功能且对该装置没有负面影响的其它烟用电磁感应加热装置也都可以用于本发明中，它们也都在本发明的保护范围之内。
根据本发明，该加热器具通过控制电路将高频振荡电路的工作电压调控至0～18V或者将占空比指数调控至30～70％实现对输出功率的调整。
具体地，工作电压调整是由控制电路的增压元件实现的。而占空比指数调整是通过控制电路的PWM占空比调整程序与电路输入电流间隙提高或降低装置有效工作时长来调整装置输出功率实现的。占空比是指电路被接通时间占整个电路工作周期的百分比。例如，一个电路在它一个工作周期中有一半时间被接通了，那么它的占空比就是50％。如果加在该工作元件上的信号电压为5V，则实际的工作电压平均值或电压有效值就是2.5V。
根据YCT138-1998卷烟感官评吸标准规定由7名评吸专家组成评吸小组，使用本发明烟用电磁加热器具及其配套烟支进行抽吸，并根据YCT138-1998卷烟感官评吸标准进行评吸，其评吸结果表明本发明控制方法能够将抽吸口数控制达到持续工作90～300s或抽吸口数达到5～20口，烟气量充足、刺激小、余味干净、无明显杂气与残留、劲头适中，烟气温度适中无灼热感，在不抽吸时无测流烟气发出。
[有益效果]
本发明的有益效果是：
本发明电磁感应加热器具系统解决了电磁加热持续高功率输出使烟草物料被过度加热导致影响抽吸口感，以及抽吸时加热温度损失带来的技术问题。在降低装置能耗的同时，又能实时控制功率输出，达到灵活调控温度保证烟气质量的效果。这种控制方法能够控制样品抽吸口数，烟气量充足、刺激小、余味干净、无明显杂气与残留、劲头适中，烟气温度适中无灼热感，在不抽吸时无测流烟气发出。
【附图说明】
图1是本发明电磁感应加热器具功率输出与工作温度曲线图：
图2是本发明电磁感应加热器具结构示意图；
图中标号：I-预热阶段；II-保温阶段；III-抽吸阶段；1-直流电池电源；2-高频振荡电路；3-控制电路；4-电磁感应线圈；5-加热腔；6-加热腔保护壳；7-器具外壳；8-感应加热材料；9-空气压力传感器；10-温度传感器；11-吸烟信号提示器。
【具体实施方式】
参见图1和图2，通过下述实施例将能够更好地理解本发明。
实施例1：加热不燃烧烟草制品烟气持续释放的控制
该实施例的实施步骤如下：
该实施例使用附图2描述的加热器具，其中直流电池电源1是锂电池；高频振荡电路2是MOSFET金氧半场效晶体管；控制电路3是由东莞戴讯电子科技有限公司以商品名NRF51822-QFAB微处理芯片销售的产品；空气压力传感器9是由深圳市银太阳科技有 限公司以商品名咪头开关销售的产品；磁感应线圈4是缠距0.4mm、长度1800mm、直径12mm、工作电压2V的电磁感应线圈；加热腔5是内径6mm、长度32mm、壁厚2.0mm的圆柱形状腔；电磁加热腔保护壳6是使用二氧化硅制成的；器具外壳7是用聚乙烯材料制成的；感应加热材料8是由上海双加工贸有限公司以商品名电磁纯铁销售的纯铁材料制成的。
该加热器具是以预热阶段I以及交替循环的保温阶段II与抽吸阶段III的加热方式进行的；在抽吸前启动该加热器具使其处于预热阶段I，这时该加热器具以8W功率输出30s，使烟草物料加热达到温度284℃，以释放出充足的烟气；该加热器具通过控制电路3将高频振荡电路2的工作电压调控至0V实现对输出功率的调整；
在预热阶段I结束时由泰州福声电子科技有限公司以商品名贴片式蜂鸣器销售的吸烟信号提示器11发出声信号，提示使用者该加热器具的预热阶段I已结束，可以开始吸烟。
然后，立即让该加热器具的输出功率降低而使其进入保温阶段II，该加热器具以5.1W功率连续输出，使烟草物料的温度维持在300℃，将使烟草物料维持其温度，以保证烟草物料处于烟气释放的临界状态，如补充能量就能提高烟草物料温度，从而迅速释放出充足的烟气；
接着进入抽吸阶段III，这时该加热器具以12.4W功率输出1.0s，使烟草物料加热，将其温度升高至252℃；加热器具在检测到抽吸信号时就瞬时提高输出功率，补偿因抽吸行为所导致的烟草物料温度下降，并快速加热烟草物料而释放烟气；
该加热器具根据其压力传感器空气压力传感器9检测的压力降低变化值达到50Pa/s时就启动抽吸阶段III，根据其监测结果而使该加热器具交替处于保温阶段II或抽吸阶段III，这种保温阶段II与抽吸阶段III的往复循环次数是5次，然后该加热器具自动结束工作；
根据本申请说明书描述的方法进行评吸，其评吸结果表明该实施例能够控制样品抽吸口数达到12口，烟气量充足、刺激小、余味干净、无明显杂气与残留、劲头适中，烟气温度适中无灼热感，在不抽吸时无测流烟气发出。
实施例2：加热不燃烧烟草制品烟气持续释放的控制
该实施例的实施方式与实施例1的实施方式相同，只是直流电池电源1是锂离子电池；高频振荡电路2是IGBT绝缘栅双极型晶体管；温度传感器10是由宁海县华深电子有限公司以商品名HS-T6电阻式高精度温度传感器销售的电阻式温度传感器；
在预热阶段I，该加热器具以12W功率输出25s，使烟草物料加热达到温度316℃， 以释放出充足的烟气；该加热器具通过控制电路3将高频振荡电路2的工作电压调控至9V实现对输出功率的调整；在预热阶段I结束时由深圳市巨弘光电有限公司商品名LED贴片发光二极管销售的吸烟信号提示器11发出光信号；
在保温阶段II，该加热器具以6.0W功率连续输出，使烟草物料的温度维持在350℃；
在抽吸阶段III，该加热器具以16.8W功率输出1.5s，使烟草物料加热，将其温度升高至284℃；
该加热器具根据其压力传感器空气压力传感器9检测的压力降低变化值达到510Pa/s时就启动抽吸阶段III，根据其监测结果而使该加热器具交替处于保温阶段II或抽吸阶段III，这种保温阶段II与抽吸阶段III的往复循环次数是8次；
该实施例的实施效果与实施例1的实施效果相同。
实施例3：加热不燃烧烟草制品烟气持续释放的控制
该实施例的实施方式与实施例1的实施方式相同，只是直流电池电源1是镉镍电池；高频振荡电路2是IGFET绝缘栅极场效晶体管；温度传感器10是由东莞市美鑫自动化科技有限公司以商品名热敏电阻销售的热电偶式温度传感器；
在预热阶段I，该加热器具以18W功率输出20s，使烟草物料加热达到温度348℃，以释放出充足的烟气；该加热器具通过控制电路3将高频振荡电路2的工作电压调控至18V；在预热阶段I结束时由机械振动吸烟信号提示器是由惠州力博瑞特机电有限公司公司以商品名微型震动马达销售的的吸烟信号提示器11发出机械振动信号；
在保温阶段II，该加热器具以1.5W功率连续输出，使烟草物料的温度维持在100℃；
在抽吸阶段III，该加热器具以21.2W功率输出2.0s，使烟草物料加热，将其温度升高至316℃；
该加热器具根据其压力传感器空气压力传感器9检测的压力降低变化值达到1000Pa/s时就启动抽吸阶段III，根据其监测结果而使该加热器具交替处于保温阶段II或抽吸阶段III，这种保温阶段II与抽吸阶段III的往复循环次数是11次；
该实施例的实施效果与实施例1的实施效果相同。
实施例4：加热不燃烧烟草制品烟气持续释放的控制
该实施例的实施方式与实施例1的实施方式相同，只是直流电池电源1是镍氢电池；高频振荡电路2是IGBT绝缘栅双极型晶体管；空气压力传感器9是由深圳市银太阳科技有限公司以商品名咪头开关销售的产品；
在预热阶段I，该加热器具以22W功率输出15s，使烟草物料加热达到温度220℃，以释放出充足的烟气；该加热器具将占空比指数调控至30％实现对输出功率的调整；在 预热阶段I结束时由深圳市巨弘光电有限公司商品名LED贴片发光二极管销售的吸烟信号提示器11发出光信号；
在保温阶段II，该加热器具以2.4W功率连续输出，使烟草物料的温度维持在150℃；
在抽吸阶段III，该加热器具以8.0W功率输出0.5s，使烟草物料加热，将其温度升高至220℃；
该加热器具根据温度传感器10检测到感应加热材料8的温度降低速率为5℃/s时就启动抽吸阶段III，根据其监测结果而使该加热器具交替处于保温阶段II或抽吸阶段III，这种保温阶段II与抽吸阶段III的往复循环次数是14次；
该实施例的实施效果与实施例1的实施效果相同。
实施例5：加热不燃烧烟草制品烟气持续释放的控制
该实施例的实施方式与实施例1的实施方式相同，只是直流电池电源1是锂离子电池；高频振荡电路2是MOSFET金氧半场效晶体管；温度传感器10是由东莞市美鑫自动化科技有限公司以商品名热敏电阻销售的热电偶式温度传感器；
在预热阶段I，该加热器具以26W功率输出10s，使烟草物料加热达到温度252℃，以释放出充足的烟气；该加热器具将占空比指数调控至50％实现对输出功率的调整；在预热阶段I结束时是由惠州力博瑞特机电有限公司公司以商品名微型震动马达销售的吸烟信号提示器11发出机械振动信号；
在保温阶段II，该加热器具以3.3W功率连续输出，使烟草物料的温度维持在200℃；
在抽吸阶段III，该加热器具以25.6W功率输出2.5s，使烟草物料加热，将其温度升高至348℃；
该加热器具根据其温度传感器10检测到感应加热材料8的温度降低速率为42℃/s时就启动抽吸阶段III，根据其监测结果而使该加热器具交替处于保温阶段II或抽吸阶段III，这种保温阶段II与抽吸阶段III的往复循环次数是17次；
该实施例的实施效果与实施例1的实施效果相同。
实施例6：加热不燃烧烟草制品烟气持续释放的控制
该实施例的实施方式与实施例1的实施方式相同，只是直流电池电源1是镍氢电池；高频振荡电路2是MOSFET金氧半场效晶体管；温度传感器10是由宁海县华深电子有限公司以商品名HS-T6电阻式高精度温度传感器销售的电阻式温度传感器；
在预热阶段I，该加热器具以30W功率输出5s，使烟草物料加热达到温度380℃，以释放出充足的烟气；该加热器具将占空比指数调控至70％实现对输出功率的调整；在预热阶段I结束时由泰州福声电子科技有限公司以商品名贴片式蜂鸣器销售的吸烟信号 提示器11发出声信号；
在保温阶段II，该加热器具以4.2W功率连续输出，使烟草物料的温度维持在250℃；
在抽吸阶段III，该加热器具以30.0W功率输出3.0s，使烟草物料加热，将其温度升高至380℃；
该加热器具根据其温度传感器10检测到感应加热材料8的温度降低速率为80℃/s时就启动抽吸阶段III，根据其监测结果而使该加热器具交替处于保温阶段II或抽吸阶段III，这种保温阶段II与抽吸阶段III的往复循环次数是20次；
该实施例的实施效果与实施例1的实施效果相同。

Claims (10)

  1. 一种加热不燃烧烟草制品烟气持续释放的控制方法，其特征在于该控制方法的步骤如下：
    用于加热不燃烧烟草制品的加热器具是以预热阶段(I)以及交替循环的保温阶段(II)与抽吸阶段(III)的加热方式进行的；在抽吸前启动该加热器具使其处于预热阶段(I)，这时该加热器具持续输出加热能量，使烟草物料快速加热，直至产生适宜的第一口烟气；然后，立即让该加热器具的输出功率降低而使其进入保温阶段(II)，这时加热器具只是将使烟草物料维持其温度，以保证烟草物料处于烟气释放的临界状态，如补充能量就能提高烟草物料温度，从而迅速释放出充足的烟气；接着进入抽吸阶段(III)，这时加热器具在检测到抽吸信号时就瞬时提高输出功率，补偿因抽吸行为所导致的烟草物料温度下降，并快速加热烟草物料而释放烟气；该加热器具根据其压力传感器或温度传感器的监测结果而使该加热器具交替处于保温阶段(II)或抽吸阶段(III)，或者使该加热器具停止工作。
  2. 根据权利要求1所述的加热不燃烧烟草制品烟气持续释放的控制方法，其特征在于该加热器具包括直流电池电源(1)、高频振荡电路(2)、控制电路(3)、电磁感应线圈(4)、加热腔(5)、加热腔保护壳(6)、器具外壳(7)与感应加热材料(8)，在加热腔(5)的连通位置安装空气压力传感器(9)，在感应加热材料(8)处安装温度传感器(10)；在该加热器具中，空气压力传感器(9)监测消费者的抽吸行为，而温度传感器(10)监测感应加热材料(8)的温度变化，控制电路(3)接受这些监测信号并对加热器具的输出功率进行调控，以达到稳定释放烟气的效果。
  3. 根据权利要求1所述的加热不燃烧烟草制品烟气持续释放的控制方法，其特征在于在预热阶段(I)时，该加热器具以8～30W功率输出5～30s，使烟草物料加热达到温度220～380℃，以释放出充足的烟气；在预热阶段(I)结束时由吸烟信号提示器(11)发出声、光或者机械振动信号，提示使用者该加热器具的预热阶段(I)已结束，可以开始吸烟。
  4. 根据权利要求1所述的加热不燃烧烟草制品烟气持续释放的控制方法，其特征在于在保温阶段(II)时，该加热器具以1.5～6.0W功率连续输出，使烟草物料的温度维持在100～350℃。
  5. 根据权利要求1所述的加热不燃烧烟草制品烟气持续释放的控制方法，其特征在于在抽吸阶段(III)时，该加热器具以8～30W功率输出0.5～3.0s，使烟草物料加 热，将其温度升高至220～380℃。
  6. 根据权利要求1所述的加热不燃烧烟草制品烟气持续释放的控制方法，其特征在于保温阶段(II)与抽吸阶段(III)的往复循环次数是5～20次；该往复循环次数达到加热器具控制程序预设的次数时，该加热器具将自动停止工作。
  7. 根据权利要求1所述的加热不燃烧烟草制品烟气持续释放的控制方法，其特征在于当加热器具处于保温阶段(II)且空气压力传感器(9)检测的压力降低变化值达到50～1000Pa时就启动抽吸阶段(III)；所述的空气压力传感器(9)是薄膜型空气压力传感器。
  8. 根据权利要求1所述的加热不燃烧烟草制品烟气持续释放的控制方法，其特征在于当加热器具处于保温阶段(II)且温度传感器(10)检测到感应加热材料(8)的温度降低速率为5～80℃/s时就启动抽吸阶段(III)；所述的温度传感器(10)是电阻式温度传感器或热电偶式温度传感器。
  9. 根据权利要求1所述的加热不燃烧烟草制品烟气持续释放的控制方法，其特征在于该加热器具处于保温阶段(II)的时间为30～60s且未检测到压力变化或者温度变化时，该加热器具自动结束工作，或者加热器具持续工作90～300s或抽吸口数达到5～20口时，该加热器具也自动结束工作，以避免持续加热导致器具损坏。
  10. 根据权利要求1所述的加热不燃烧烟草制品烟气持续释放的控制方法，其特征在于该加热器具通过控制电路(3)将高频振荡电路(2)的工作电压调控至0～18V或者将占空比指数调控至30～70％实现对输出功率的调整。
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