CN110301679A - A kind of control method heating the tobacco smoke sustained release that do not burn - Google Patents

Abstract

The present invention relates to a control method for the continuous release of smoke from heat-not-burn tobacco products. The control method is that the heating device is heated in the preheating stage I and alternately circulating the heat preservation stage II and the smoking stage III. The number of reciprocating cycles between the heat preservation phase II and the suction phase III is 5 to 20 times. Using this control method can control the number of puffs, the amount of smoke is sufficient, the stimulation is small, the aftertaste is clean, there is no obvious miscellaneous gas and residue, the strength is moderate, the temperature of the smoke is moderate, there is no burning sensation, and there is no smoke flow when not smoking issue.

Description

A method for controlling the sustained release of smoke from heat-not-burn tobacco products

【Technical field】

The invention belongs to the technical field of heat-not-burn cigarettes. More specifically, the present invention relates to a method for controlling the sustained release of smoke from heat-not-burn tobacco products.

【Background technique】

Heat-not-burn tobacco products are tobacco products that use a special heat source to heat tobacco materials. Its heating temperature does not exceed 500°C, thereby reducing the thermal cracking and incomplete combustion reactions of tobacco chemical components, and the harmful chemicals in the smoke. Composition and biological toxicity are greatly reduced, thereby significantly reducing the harm to humans and the environment. Heat-not-burn 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 heat the tobacco material through an external heat source, bake it, and dry distill the nicotine and flavor substances contained in the tobacco material. Smoke is formed to satisfy the smoker. At present, the main heat-not-burn tobacco products sold are electric heating type. Most of these products adopt resistive heating technology, the heat transfer efficiency is low, the uniformity of smoke release needs to be improved, and there are many residual substances in the cavity after heating, which affects the suction. Feeling, and the resistance heating element is easy to deposit carbon after repeated use, it is difficult to clean and easy to damage, which affects the consumer experience.

Electromagnetic induction heating converts DC current into high-frequency vibration current through an oscillating circuit. After the high-frequency oscillating current flows through the electromagnetic induction coil, a high-frequency alternating magnetic field is generated. In the alternating magnetic field, magnetic metal materials can induce electromagnetic energy. Charge eddy currents are generated on the surface, and the eddy currents cause metal atoms to move at high speed and irregularly. The atoms collide and rub against each other to generate heat energy, thus playing a heating effect. The thermal efficiency of electromagnetic induction heating can reach 95%. Its heating efficiency is high, and the heating element does not need to be connected with the power circuit, and the material loss is small during the heating process. 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 cigarette can quickly reach the smoke release temperature, reduce the device warm-up time, improve the heating energy conversion efficiency, prolong the battery life of the heating device, and avoid and eliminate heating. The defect that the material is easily damaged, the maintenance is more convenient, and the user experience of consumers is improved. However, in the electromagnetic heating technology, since the induction heating material is not directly connected to the circuit system, there is a lag in the temperature measurement of the induction heating material, which is not conducive to the regulation of the working state of the device. However, heat-not-burn tobacco products have very strict requirements on heating conditions, and technical difficulties in heating control procedures affect the use effect of electromagnetic induction heating devices in heat-not-burn tobacco products.

Therefore, aiming at the technical features of the electromagnetic induction heating device and the supporting technical requirements of the heat-not-burn tobacco products, the present inventor finally completed the present invention after extensive experimental research, analysis and summary on the basis of the prior art.

【Content of invention】

[Technical problem to be solved]

The purpose of the present invention is to provide a method for controlling the sustained release of smoke from heat-not-burn tobacco products.

[Technical solutions]

The present invention is achieved through the following technical solutions.

The invention relates to a method for controlling the continuous release of smoke from heat-not-burn tobacco products.

The steps of the control method are as follows:

The heating device used to heat non-burning tobacco products is carried out in the heating mode of preheating stage I and alternating cycle of heat preservation stage II and smoking stage III; start the heating device before smoking to make it in preheating stage I, At this time, the heating device continues to output heating energy, so that the tobacco material is heated rapidly until the first puff of smoke is produced; then, the output power of the heating device is immediately reduced to enter the heat preservation stage II. The tobacco material will be maintained at its temperature to ensure that the tobacco material is in a critical state of smoke release, such as adding energy to increase the temperature of the tobacco material, thereby releasing sufficient smoke quickly; then enter the suction stage III, when the heating device When the smoking signal is detected, the output power is increased instantaneously to compensate for the temperature drop of the tobacco material caused by the smoking behavior, and to quickly heat the tobacco material to release smoke; the heating appliance is based on the monitoring results of its pressure sensor or temperature sensor. The heating device is alternately in the holding phase II or the suction phase III, or the heating device is deactivated.

According to a preferred embodiment of the present invention, the heating appliance includes a DC battery power supply 1, a high-frequency oscillation circuit 2, a control circuit 3, an electromagnetic induction coil 4, a heating chamber 5, a heating chamber protective shell 6, an appliance shell 7 and an induction heating Material 8, an air pressure sensor 9 is installed at the communication position of the heating chamber 5, and a temperature sensor 10 is installed at the induction heating material 8; The temperature change of the heating material 8 is sensed, and the control circuit 3 receives these monitoring signals and regulates the output power of the heating appliance, so as to achieve the effect of stably releasing the smoke.

According to another preferred embodiment of the present invention, during the preheating stage I, the heating device outputs a power of 8-30W for 5-30s to heat the tobacco material to a temperature of 220-380°C to release sufficient first puff Smoke: at the end of the preheating stage I, the smoking signal prompter 11 sends out sound, light or mechanical vibration signals to remind the user that the preheating stage I of the heating appliance is over and smoking can begin.

According to another preferred embodiment of the present invention, during the heat preservation stage II, the heating device outputs continuously at a power of 1.5-6.0 W to maintain the temperature of the tobacco material at 100-350°C.

According to another preferred embodiment of the present invention, during the smoking stage III, the heating appliance outputs 8-30W power for 0.5-3.0s to heat the tobacco material and raise its temperature to 220-380°C.

According to another preferred embodiment of the present invention, the number of reciprocating cycles between the heat preservation stage II and the suction stage III is 5 to 20 times; when the number of reciprocating cycles reaches the number preset by the heating device control program, the heating device will automatically stop Work.

According to another preferred embodiment of the present invention, when the heating device is in the heat preservation stage II and the change value of the pressure drop detected by the air pressure sensor 9 reaches 50-1000Pa, the suction stage III is started; the air pressure sensor 9 is a thin film type air pressure sensor.

According to another preferred embodiment of the present invention, when the heating device is in the heat preservation stage II and the temperature sensor 10 detects that the temperature drop rate of the induction heating material 8 is 5-80° C./s, the suction stage III is started; The temperature sensor 10 is a resistance temperature sensor or a thermocouple temperature sensor.

According to another preferred embodiment of the present invention, when the heating device is in the heat preservation stage II for 30-60s and no pressure change or temperature change is detected, the heating device will automatically stop working, or the heating device will continue to work for 90-300s Or when the number of suction ports reaches 5-20, the heating device will automatically stop working to avoid damage to the device caused by continuous heating.

According to another preferred embodiment of the present invention, the heating appliance adjusts the operating voltage of the high-frequency oscillation circuit 2 to 0-18V or adjusts the duty cycle index to 30-70% through the control circuit 3 to realize the adjustment of the output power .

The present invention will be described in more detail below.

The present invention establishes a heating program control method based on the energy compensation of the consumer's puffing behavior. The control method supplies appropriate energy to the electromagnetic induction heating appliance in a segmented manner according to the consumer's puffing behavior, so that it can effectively Improve the rationality of the heating temperature of the heating appliance, meet the requirements of sufficient and stable smoke release of heat-not-burn tobacco products during the entire smoking process, reduce sidestream smoke overflow when not smoking, and reduce pollution to the surrounding air environment . In addition, the energy consumption of the heating appliance can be reduced, the battery life of the heating appliance can be improved, and the use experience of the electromagnetic induction heating appliance can be significantly improved.

In the present invention, the electromagnetic induction heating appliance should be understood as a heating appliance that heats non-burning tobacco products by means of electromagnetic induction heating.

In the present invention, 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 heat-not-burn tobacco products.

In the present invention, the control method should be understood as a method of controlling the output energy of the heating appliance during the whole process of heating the cigarette, so as to make the smoke evenly and continuously released. Specifically, the control method includes steps such as a preheating stage, a heat preservation stage, a suction stage, and stopping heating of the electromagnetic induction heating appliance. The specific control mode is shown in Fig. 1 .

The steps of the control method are as follows:

The heating device used for heating non-burning tobacco products is carried out in a heating mode of preheating stage I and alternating cycles of heat preservation stage II and smoking stage III.

According to the present invention, the main purpose of setting the preheating stage I is to allow the heating device to output enough energy to rapidly heat the tobacco material, so that the tobacco material reaches a temperature condition for releasing sufficient and stable smoke.

Start the heating device before smoking to make it in the preheating stage I. At this time, the heating device continues to output heating energy to rapidly heat the tobacco material until a suitable first puff of smoke is produced;

In accompanying drawing 1, 1 represents the preheating stage I of this heating device, and the solid line among the figure represents the power output situation of this heating device at this stage; The dotted line represents the temperature change situation of this heating device at this stage.

During the preheating stage I, the heating device outputs 5-30s with a power of 8-30W 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 of the tobacco material is higher than 380°C, the cut tobacco will be over-cured, which will affect the quality of smoking. Therefore, it is suitable that the temperature of the tobacco material is 220-380°C, preferably 250-330°C.

In the preheating stage I, the output power of the heating appliance is 8-30W. Increasing the output power of the heating appliance can effectively shorten the warm-up time. If the output power is lower than 8W, it will cause the heating device to take too long to warm up, which will affect the suction experience; if the output power is higher than 30W, it will cause excessive consumption of the circuit of the heating device 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 the preheating stage I is 5-30s. It is also not advisable that the time of the preheating phase I exceeds the stated range, because if this time is less than 5s, it will lead to insufficient energy supply received by the material, and insufficient smoke generation of the first flue gas; if this time is longer than 30s, it will lead to too long waiting time for pumping and affect the pumping experience; therefore, it is advisable that the time of the warm-up stage I is 5-30s, preferably 10-20s.

At the end of the preheating stage I, the smoking signal prompter 11 sends out sound, light or mechanical vibration signals to remind the user that the preheating stage I of the heating appliance is over and smoking can begin.

The smoking signal prompter 11 used in the present invention is all products sold on the market at present, for example, the sound smoking signal prompter is a product sold by Taizhou Fusheng Electronic Technology Co., Ltd. under the trade name patch type buzzer, and the luminous smoking signal prompt The device is a product sold by Shenzhen Juhong Optoelectronics Co., Ltd. under the trade name LED patch light-emitting diode, and the mechanical vibration smoking signal reminder is a product sold by Huizhou Liborite Electromechanical Co., Ltd. under the trade name Micro Vibration Motor.

Then, the output power of the heating device is immediately reduced to enter the heat preservation phase II.

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, adding energy can increase the temperature of the tobacco material, thereby releasing sufficient smoke quickly; specifically , 2 represents the heat preservation stage II of the heating appliance in accompanying drawing 1.

It can be seen from accompanying drawing 1 that during the heat preservation stage II, the output power of the heating appliance is lower than that of the preheating stage I, and the heating appliance outputs continuously at a power of 1.5-6.0W, so that the temperature of the tobacco material is maintained at 100-350°C. ℃.

In the heat preservation stage II of the present invention, if the output power of the heating appliance is lower than 1.5W, the temperature of the tobacco material will be lower than 100°C, and the tobacco material cannot continue to smoke, which will affect the smoking experience; if the output of the heating appliance If the power is higher than 6.0W, it will easily cause the temperature of the tobacco material to exceed 350°C, and the tobacco material will be over-cured, which will affect the quality of its smoke and the persistence of smoke release. Therefore, the output power of the heating appliance is 1.5-6.0W and the temperature of the tobacco material is 100-350°C is reasonable, preferably the output power of the heating appliance is 2.0-5.0W and the temperature of the tobacco material is 140-300°C, more preferably the output power of the heating appliance 2.6-4.2W and tobacco material temperature 180-250°C.

After the holding phase II, the pumping phase III follows. The basic function of the smoking phase III is that the heating device immediately increases the output power when the smoking signal is detected, compensating for the temperature drop of the tobacco material caused by the smoking action, and at the same time rapidly heating the tobacco material to release a large amount of smoke.

During the smoking stage III, the heating appliance outputs 8-30W power for 0.5-3.0s to heat the tobacco material and raise its temperature to 220-380°C.

In the smoking stage III, the output power of the heating device is higher than that of the heat preservation stage II, so that the heat compensation can be performed for the temperature drop of the tobacco material due to the suction, so that the tobacco material can maintain a large amount of smoke and maintain the quality of the cigarette. Stable suction effect. The temperature of the tobacco material during smoking phase III is 220-380°C. If the temperature of the tobacco material is lower than 220°C, the amount of smoke produced by the tobacco material will be insufficient, which will 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 Pumping quality. Therefore, it is appropriate that the temperature of the tobacco material in the smoking stage III is 220-380°C, preferably 280-350°C.

The duration of each suction phase III is 0.5-3 s, preferably 1-2 s. If the duration of the smoking phase III is shorter than 0.5s, the heating device cannot provide enough energy for compensation, thus affecting the smoking effect; if the duration of the smoking phase III is longer than 3s, it is easy to cause the heating device to overcompensate the energy , so that the tobacco material is overheated, which 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 9 or the temperature sensor 10, or the duration value of the suction phase III preset in the power control program, according to these duration values Recognized by the programmable microcontroller chip and issued an instruction to control the stop of the suction phase III by reducing the power value to 1.6-6.0w.

In the present invention, when the heating appliance is in the heat preservation stage II and the pressure drop detected by the air pressure sensor 9 reaches 50-1000Pa, the programmable microcontroller chip recognizes and issues an instruction to increase the output power value of the power supply circuit instantaneously. 8-30w, start the suction phase III; in the present invention, if the pressure drop detected by the air pressure sensor 9 is lower than 50Pa, it will easily lead to false activation of the suction behavior signal, and start the suction phase III prematurely; if When the change value of the pressure drop detected by the air pressure sensor 9 is higher than 1000 Pa, the change value of the pressure drop is relatively high, which is not easy to cause the activation of the suction behavior signal. Specifically, the programmable micro-controller chip judges according to the detection signal of the air pressure sensor 9, and compensates the output power when the value of the deviation from the preset temperature range and the pressure drop caused by the consumer's suction behavior is 50-1000Pa, and the heating appliance When the operating pressure is maintained within the preset range, the device enters suction phase III.

The air pressure sensor 9 used in the present invention is a thin-film air pressure sensor, which is a product currently on the market, such as a pressure sensor sold by Shenzhen Yinsun Technology Co., Ltd. under the trade name microphone switch. The programmable microcontroller chip used in the present invention is a product currently on the market, such as a RISC, CISC, DSP or ARM type microcontroller chip currently on the market.

In the present invention, when the heating device is in the heat preservation stage II and the temperature drop rate detected by the temperature sensor 10 reaches 5-80° C./s, the programmable microcontroller chip recognizes and issues an instruction to instantly increase the battery power output value to 8 - 30w start the suction stage III; in the present invention, if the temperature drop rate detected by the temperature sensor 10 is lower than 5°C/s, it is easy to cause false activation of the suction behavior signal, if the temperature drop rate detected by the temperature sensor 10 is high At 80°C/s, it is not easy to cause the activation of the pumping behavior signal. Specifically, the programmable microcontroller chip judges according to the detection signal of the temperature sensor 10, and performs output power compensation when the temperature deceleration rate reaches 10-80°C/s when the temperature deviates from the preset temperature range and the smoking behavior of the consumer reaches 10-80°C/s. The device enters pumping phase III while the operating temperature remains within the preset range.

The temperature sensor 10 used in the present invention is a resistance temperature sensor or a thermocouple temperature sensor. They are all products currently on the market. For example, the resistive temperature sensor sold by Ninghai County Huashen Electronics Co., Ltd. under the trade name HS-T6 resistive high-precision temperature sensor, and Dongguan Meixin Automation Technology Co., Ltd. under the trade name Thermocouple temperature sensors sold by thermistors.

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 will automatically stop working. In the present invention, if the time of the heat preservation stage II is shorter than 30s, it is easy to cause the heating appliance to stop by mistake; if the time of the heat preservation stage II is longer than 60s, the continuous heating time of the heating appliance will be prolonged, and the heating appliance will consume too much energy. And fragile. or,

When the heating appliance continues to work for 90-300s in the heat preservation stage II or the number of suction ports reaches 5-20, it will automatically stop working to avoid damage to the appliance caused by continuous heating. Using this control method can prevent the heating device from being heated for too long, which will consume energy and cause damage, and also prevent the tobacco material from being heated for too long, which will affect the amount of smoke and the quality of smoking. The heating appliance can also be stopped by a manual switch.

According to the monitoring results of the pressure sensor or the temperature sensor, the heating device is alternately in the heat preservation stage II or the suction stage III, or the heating device is stopped working. According to the present invention, the suction stage III and the heat preservation stage II are connected alternately, see Figure 1 for details. It can be seen from Figure 1 that the heat preservation stage II starts immediately after the preheating stage I ends, and ends after the next suction stage III starts, and after the next suction stage III ends, the heating device enters the next heat preservation stage II, and Repeat in this way until the heating device stops working.

The number of reciprocating cycles between the heat preservation stage II and the suction stage III is 5 to 20 times; when the number of reciprocating cycles reaches the number preset by the heating device control program, the heating device will automatically stop working. In the present invention, if the number of cycles is less than 5, the number of puffs of the cigarettes will be insufficient, which will affect the consumption experience; if the number of cycles is more than 20, it will result in insufficient release of smoke in the rear section. Therefore, the appropriate number of cycles is 5-20, preferably 8-15. The number of cycles can be determined by the consumer's smoking behavior or after 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 in the cigarette.

According to the present invention, the heating appliance includes a DC battery power supply 1, a high-frequency oscillation circuit 2, a control circuit 3, an electromagnetic induction coil 4, a heating chamber 5, a heating chamber protective shell 6, an appliance shell 7 and an induction heating material 8. 5, the air pressure sensor 9 is installed at the communication position of the induction heating material 8, and the temperature sensor 10 is installed at the induction heating material 8; The control circuit 3 receives these monitoring signals and regulates the output power of the heating appliance to achieve the effect of stably releasing the smoke. The specific structure of the heating appliance is referred to accompanying drawing 2.

The DC battery power supply 1, the high-frequency oscillation circuit 2 and the electromagnetic induction coil 4 are sequentially connected to implement working current transmission; the control circuit 3 is respectively connected to the DC battery power supply 1, the high-frequency oscillation circuit 2, the air pressure sensor 9 and the temperature sensor 10 for signal circuits , implement the operation control of the device; where:

DC battery power supply 1 is a lithium battery, lithium-ion battery, cadmium-nickel battery or nickel-hydrogen battery currently on the market; high-frequency oscillation circuit 2 is a MOSFET gold-oxide-semiconductor field-effect transistor, IGBT insulated gate bipolar type currently on the market Transistors or IGFET insulated gate field effect transistors, which can convert the direct current output by the direct current battery power supply 1 into a high-frequency oscillating current with a frequency of 10-999KHz;

The control circuit 3 is controlled by the prefabricated power output/time curve of its programmable microcontroller chip, and the programmable microcontroller chip is a RISC, CISC, DSP or ARM type microcontroller chip currently on the market. The control circuit 3 used in the present invention is composed of the above-mentioned control chip as the core and connected with temperature and pressure sensors.

The electromagnetic induction coil 4, heating chamber 5, heating chamber protective shell 6, appliance shell 7 and induction heating material 8 used in the present invention are all commonly used parts in this technical field.

Of course, any other electromagnetic induction heating device for cigarettes that has a similar structure and the same function and has no negative impact on the device can also be used in the present invention, and they are all within the protection scope of the present invention.

According to the present invention, the heating appliance adjusts the output power by adjusting the operating voltage of the high-frequency oscillation circuit 2 to 0-18V or adjusting the duty cycle index to 30-70% through the control circuit 3 .

Specifically, the working voltage adjustment is realized by the boosting element of the control circuit 3 . The adjustment of the duty ratio index is realized by adjusting the output power of the device by increasing or reducing the effective working time of the device by increasing the gap between the PWM duty ratio adjustment program of the control circuit 3 and the circuit input current. The duty cycle refers to the percentage of the time that the circuit is turned on to the entire circuit duty cycle. For example, a circuit that is on for half of its duty cycle has a duty cycle of 50%. If the signal voltage applied to the working element is 5V, the actual working voltage average value or voltage effective value is 2.5V.

According to the YCT138-1998 cigarette sensory evaluation standard, a smoking evaluation team is composed of 7 smoking evaluation experts, using the electromagnetic heating device for tobacco of the present invention and its supporting cigarettes for smoking, and evaluating 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 ports to 90-300s of continuous operation or the number of suction ports to 5-20. The smoke volume is sufficient, the stimulation is small, the aftertaste is clean, and there is no obvious miscellaneous gas and residue. , Moderate strength, moderate smoke temperature without burning sensation, no flow of smoke when not inhaling.

[beneficial effect]

The beneficial effects of the present invention are:

The electromagnetic induction heating device 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 smoking, and the heating temperature loss during smoking. 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 suction ports of the sample, the amount of smoke is sufficient, the irritation is small, the aftertaste is clean, there is no obvious miscellaneous gas and residue, the strength is moderate, the temperature of the smoke is moderate, there is no burning sensation, and there is no smoke flow when not smoking issue.

【Description of drawings】

Fig. 1 is a graph of power output and operating temperature of the electromagnetic induction heating appliance of the present invention:

Fig. 2 is a structural schematic diagram of the electromagnetic induction heating appliance of the present invention;

In the picture:

I-preheating stage; II-insulation 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; Pressure sensor; 10-temperature sensor; 11-smoking signal prompter.

【Detailed ways】

The present invention will be better understood by the following examples.

Example 1: Control of sustained release of smoke from heat-not-burn tobacco products

The implementation steps of this embodiment are as follows:

This embodiment uses the heating device described in accompanying drawing 2, wherein DC battery power supply 1 is a lithium battery; High-frequency oscillation circuit 2 is a MOSFET metal oxide half-field-effect transistor; Products sold by NRF51822-QFAB micro-processing chips; air pressure sensor 9 is a product sold by Shenzhen Yinsun Technology Co., Ltd. under the trade name Mitou Switch; 2V electromagnetic induction coil; the 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 material The induction heating material 8 is made of pure iron material sold by Shanghai Shuangjia Trading Co., Ltd. under the trade name electromagnetic pure iron.

The heating device is carried out in the heating mode of the preheating stage I and the alternating cycle of the heat preservation stage II and the suction stage III; the heating device is started before the suction to make it in the preheating stage I, and the heating device is powered by 8W at this time. The power output is 30s to heat the tobacco material to a temperature of 284°C to release sufficient smoke; the heating device adjusts the working voltage of the high-frequency oscillation circuit 2 to 0V through the control circuit 3 to adjust the output power;

At the end of the preheating stage I, the smoking signal prompter 11 sold by Taizhou Fusheng Electronic Technology Co., Ltd. under the trade name patch buzzer sends out an audible signal to remind the user that the preheating stage I of the heating appliance has ended, and can start smoking.

Then, the output power of the heating device is immediately reduced to enter the heat preservation stage II. The heating device outputs continuously with a power of 5.1W to maintain the temperature of the tobacco material at 300°C, which will maintain the temperature of the tobacco material to ensure that the tobacco The material is in a critical state of smoke release, such as adding energy can increase the temperature of the tobacco material, thereby releasing sufficient smoke quickly;

Then enter the suction stage III, at this time, the heating device outputs 1.0s with 12.4W power to heat the tobacco material and raise its temperature to 252°C; when the heating device detects the suction signal, it instantly increases the output power to compensate The temperature of the tobacco material drops due to the action of smoking, and the rapid heating of the tobacco material releases smoke;

The heating appliance starts the suction phase III when the pressure drop value detected by its pressure sensor air pressure sensor 9 reaches 50 Pa/s, and makes the heating appliance alternately in the heat preservation phase II or suction phase III according to the monitoring results. The number of reciprocating cycles between the heat preservation stage II and the suction stage III is 5 times, and then the heating device automatically ends its work;

Smoking was carried out according to the method described in the specification of this application. The results of the smoking evaluation showed that this example can control the number of sample suction mouths to 12, with sufficient smoke volume, less irritation, clean aftertaste, no obvious miscellaneous gas and residue, and moderate strength. The flue gas temperature is moderate without burning sensation, and there is no flow of flue gas when not inhaling.

Example 2: Control of 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 an IGBT insulated gate bipolar transistor; the temperature sensor 10 is made by Ninghai Huashen Electronics Co., Ltd. The resistive temperature sensor sold by the company under the trade name HS-T6 resistive high-precision temperature sensor;

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 operating voltage of the high-frequency oscillation circuit 2 through the control circuit 3 to 9V realizes the adjustment to output power; At the end of preheating stage 1, the smoking signal prompter 11 sold by Shenzhen Juhong Optoelectronics Co., Ltd. under the trade name LED patch light-emitting diode sends out a light signal;

In the heat preservation stage II, the heating appliance continuously outputs at a power of 6.0W to maintain the temperature of the tobacco material at 350°C;

In the smoking stage III, the heating appliance outputs 16.8W for 1.5s to heat the tobacco material and raise its temperature to 284°C;

When the pressure drop value detected by the pressure sensor air pressure sensor 9 of the heating appliance reaches 510 Pa/s, the suction stage III is started, and the heating appliance 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 heat preservation stage II and the suction stage III is 8 times;

The implementation effect of this embodiment is the same as that of Embodiment 1.

Example 3: Control of 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 nickel-cadmium battery; the high-frequency oscillation circuit 2 is an IGFET insulated gate field-effect transistor; the temperature sensor 10 is made by Dongguan Meixin Automation Technology Co., Ltd. Co., Ltd. sells thermocouple temperature sensors under the trade name Thermistor;

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 operating voltage of the high-frequency oscillation circuit 2 to 18V; at the end of the preheating phase I, the mechanical vibration smoking signal prompter is the smoking signal prompter 11 sold by Huizhou Liborite Electromechanical Co., Ltd. under the trade name Micro Vibration Motor to send a mechanical vibration signal;

In the heat preservation stage II, the heating appliance continuously outputs at 1.5W to maintain the temperature of the tobacco material at 100°C;

In the smoking stage III, the heating appliance outputs 21.2W for 2.0s to heat the tobacco material and raise its temperature to 316°C;

When the pressure drop detected by the pressure sensor air pressure sensor 9 of the heating appliance reaches 1000 Pa/s, the suction stage III is started, and the heating appliance 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 heat preservation stage II and the suction stage III is 11 times;

The implementation effect of this embodiment is the same as that of Embodiment 1.

Example 4: Control of 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 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 Co., Ltd. Co., Ltd. sells products under the trade name Mic Switch;

In the preheating stage I, the heating device outputs 15s with 22W power 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 ; At the end of the preheating stage I, the smoking signal prompter 11 sold by Shenzhen Juhong Optoelectronics Co., Ltd. trade name LED patch light-emitting diodes sends a light signal;

In the heat preservation stage II, the heating appliance continuously outputs at a power of 2.4W to maintain the temperature of the tobacco material at 150°C;

In the smoking stage III, the heating appliance outputs 8.0W for 0.5s to heat the tobacco material and raise its temperature to 220°C;

The heating device starts the suction phase III when the temperature sensor 10 detects that the temperature drop rate of the induction heating material 8 is 5° C./s, and makes the heating device 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 14 times;

The implementation effect of this embodiment is the same as that of Embodiment 1.

Example 5: Control of 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 gold-oxide-semiconductor field-effect transistor; the temperature sensor 10 is made by Dongguan Meixin Automation Technology Co., Ltd. Co., Ltd. sells thermocouple temperature sensors under the trade name Thermistor;

In the preheating stage I, the heating appliance outputs 26W power for 10s to heat the tobacco material to a temperature of 252°C to release sufficient smoke; the heating appliance adjusts the duty cycle index to 50% to adjust the output power ; At the end of the preheating phase I, the mechanical vibration signal is sent by the smoking signal prompter 11 sold by Huizhou Liborite Electromechanical Co., Ltd. under the trade name Micro Vibration Motor;

In the heat preservation stage II, the heating appliance continuously outputs at a power of 3.3W to maintain the temperature of the tobacco material at 200°C;

In the smoking stage III, the heating appliance outputs 25.6W for 2.5s to heat the tobacco material and raise its temperature to 348°C;

When the temperature sensor 10 of the heating appliance detects that the temperature drop rate of the induction heating material 8 is 42° C./s, the heating appliance starts the suction phase III, and the heating appliance 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 heat preservation phase II and the suction phase III is 17 times;

The implementation effect of this embodiment is the same as that of Embodiment 1.

Example 6: Control of 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 nickel-metal hydride battery; the high-frequency oscillation circuit 2 is a MOSFET metal-oxygen-semiconductor field-effect transistor; The resistive temperature sensor sold by the company under the trade name HS-T6 resistive high-precision temperature sensor;

In the preheating stage I, the heating appliance outputs 30W power for 5s to heat the tobacco material to a temperature of 380°C to release sufficient smoke; the heating appliance adjusts the duty cycle index to 70% to adjust the output power ; At the end of the preheating phase I, the smoking signal prompter 11 sold by Taizhou Fusheng Electronic Technology Co., Ltd. with the trade name patch buzzer sends an acoustic signal;

In the heat preservation stage II, the heating appliance continuously outputs at a power of 4.2W to maintain the temperature of the tobacco material at 250°C;

In the smoking stage III, the heating appliance outputs 30.0W for 3.0s to heat the tobacco material and raise its temperature to 380°C;

The heating device starts the suction phase III when the temperature sensor 10 detects that the temperature drop rate of the induction heating material 8 is 80°C/s, and makes the heating device 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 20 times;

The implementation effect of this embodiment is the same as that of Embodiment 1.

Claims (10)

1. A control method for the sustained release of smoke from heat-not-burn tobacco products, characterized in that the steps of the control method are as follows: The heating device used for heating non-burning tobacco products is carried out in the heating mode of the preheating stage (I) and the alternating cycle of the holding stage (II) and the smoking stage (III); the heating device is activated before smoking to make it In the preheating stage (I), the heating device continues to output heating energy to rapidly heat the tobacco material until the first puff of smoke is produced; then, immediately reduce the output power of the heating device to enter the heat preservation Stage (II), at this time, the heating appliance will only keep the tobacco material at its temperature, so as to ensure that the tobacco material is in a critical state of smoke release. If the energy is added, the temperature of the tobacco material can be increased, thereby releasing sufficient smoke quickly; then Entering the suction stage (III), at this time, when the heating device detects the suction signal, it will increase the output power instantaneously, compensate for the temperature drop of the tobacco material caused by the smoking behavior, and quickly heat the tobacco material to release the smoke; the heating According to the monitoring results of the pressure sensor or the temperature sensor, the appliance makes the heating appliance alternately in the heat preservation stage (II) or the suction stage (III), or stops the heating appliance from working. 2. The control method according to claim 1, characterized in that the heating device comprises a DC battery power supply (1), a high frequency oscillation circuit (2), a control circuit (3), an electromagnetic induction coil (4), a heating cavity ( 5), the heating cavity protection shell (6), the appliance shell (7) and the induction heating material (8), install the air pressure sensor (9) at the communication position of the heating cavity (5), and install it at the induction heating material (8) Temperature sensor (10); in this heating device, the air pressure sensor (9) monitors the consumer's suction behavior, and the temperature sensor (10) monitors the temperature change of the induction heating material (8), and the control circuit (3) accepts these Monitor the signal and adjust the output power of the heating appliance to achieve a stable release of smoke. 3. The control method according to claim 1, characterized in that during the preheating stage (I), the heating appliance outputs 5 to 30 seconds with a power of 8 to 30 W to heat the tobacco material to a temperature of 220 to 380° C. to release At the end of the preheating stage (I), the smoking signal prompter (11) sends out sound, light or mechanical vibration signals to remind the user that the preheating stage (I) of the heating appliance has ended and can start smoking. 4. The control method according to claim 1, characterized in that during the heat preservation stage (I), the heating appliance continuously outputs at a power of 1.5-6.0W, so that the temperature of the tobacco material is maintained at 100-350°C. 5. The control method according to claim 1, characterized in that in the smoking stage (III), the heating appliance outputs 8-30W power for 0.5-3.0s to heat the tobacco material and raise its temperature to 220 ~380°C. 6. The control method according to claim 1, characterized in that the number of reciprocating cycles between the heat preservation stage (II) and the suction stage (III) is 5 to 20 times; the number of reciprocating cycles reaches the number preset by the heating appliance control program , the heating appliance will automatically stop working. 7. The control method according to claim 1, characterized in that the suction stage (III) is started when the heating appliance is in the heat preservation stage (II) and the change value of the pressure drop detected by the air pressure sensor (9) reaches 50-1000Pa ; The air pressure sensor (9) is a thin-film air pressure sensor. 8. The method according to claim 1, characterized in that when the heating device is in the heat preservation stage (II) and the temperature sensor (10) detects that the temperature drop rate of the induction heating material (8) is 5-80°C/s Start the suction phase (III); the temperature sensor (10) is a resistance temperature sensor or a thermocouple temperature sensor. 9. The method according to claim 1, characterized in that when the heating device is in the heat preservation stage (II) for 30-60 s and no pressure change or temperature change is detected, the heating device automatically stops working, or the heating device When the continuous operation is 90-300s or the number of suction ports reaches 5-20, the heating appliance will automatically stop working to avoid damage to the appliance caused by continuous heating. 10. The method according to claim 1, characterized in that the heating device regulates the operating voltage of the high-frequency oscillation circuit (2) to 0-18V or regulates the duty cycle index to 30-70 through the control circuit (3). % to achieve the adjustment of the output power.