CN111513365B - Heating type aerosol generating device and method - Google Patents
Heating type aerosol generating device and method Download PDFInfo
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- CN111513365B CN111513365B CN202010257774.8A CN202010257774A CN111513365B CN 111513365 B CN111513365 B CN 111513365B CN 202010257774 A CN202010257774 A CN 202010257774A CN 111513365 B CN111513365 B CN 111513365B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 168
- 239000000443 aerosol Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000001514 detection method Methods 0.000 claims description 63
- 230000000737 periodic effect Effects 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 9
- 230000005669 field effect Effects 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims 2
- 230000008859 change Effects 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 description 13
- 150000001875 compounds Chemical class 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 235000019504 cigarettes Nutrition 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000003571 electronic cigarette Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/57—Temperature control
Landscapes
- Control Of Resistance Heating (AREA)
Abstract
The invention discloses a heating type aerosol generating device and a method, wherein the heating type aerosol generating method comprises the following steps: in a first stage, raising the temperature of the heat generating device from an initial temperature to a first temperature by controlling the energy supply of the heat generating device; in a second phase, reducing the temperature of the heat generating device from the first temperature to a second temperature by controlling the energy supply of the heat generating device, wherein the second temperature is less than the first temperature; in the third stage, the temperature of the heat generating device is stabilized at the second temperature by controlling the power supply of the heat generating device. By implementing the technical scheme of the invention, aerosol delivery with consistent characteristics and no change with time can be provided.
Description
Technical Field
The invention relates to the field of electronic cigarettes, in particular to a heating type aerosol generating device and a heating type aerosol generating method.
Background
In low temperature cigarette devices, it is desirable that the aerosol-generating device is capable of generating an aerosol that does not change over time, particularly when the aerosol is consumed by humans, and the amplitude of the fluctuation in heating temperature during continuous or repeated heating can affect the change in aerosol formation carrying nicotine and in some cases flavor. Thus, consistent aerosol delivery with time-invariant characteristics cannot be provided.
Disclosure of Invention
The invention aims to solve the technical problem that aerosol transmission with consistent characteristics which does not change with time cannot be provided in the prior art, and provides a heating type aerosol generating device and a heating type aerosol generating method.
The technical scheme adopted for solving the technical problems is as follows: a method of generating a heated aerosol is configured, comprising:
in a first stage, raising the temperature of the heat generating device from an initial temperature to a first temperature by controlling the energy supply of the heat generating device;
in a second phase, reducing the temperature of the heat generating device from the first temperature to a second temperature by controlling the energy supply of the heat generating device, wherein the second temperature is less than the first temperature;
in the third stage, the temperature of the heat generating device is stabilized at the second temperature by controlling the power supply of the heat generating device.
Preferably, in the first stage, the temperature of the heat generating device rises in a curve over time;
in the second stage, the temperature of the heating device is reduced in a curve form;
in the third stage, the temperature of the heat generating device is stabilized in a straight line form.
Preferably, the method further comprises:
the temperature of the heat generating device is maintained within a preset allowable temperature range in the second stage and the third stage by controlling the power supply of the heat generating device.
Preferably, the allowable temperature range has an upper limit between 450 ℃ and 500 ℃ and a lower limit between 250 ℃ and 300 ℃.
Preferably, the first temperature is between 300 ℃ and 450 ℃;
the second temperature is between 300 ℃ and 400 ℃.
Preferably, the time of the first stage is less than 20 seconds;
the second stage takes more than 20 seconds;
the time of the third stage is 200 seconds to 600 seconds.
Preferably, in the second and third stages, the temperature of the heat generating device is brought to the second temperature by controlling the power supply of the heat generating device in such a manner that:
detecting the temperature of the heating device to obtain a temperature detection value;
PID calculation is carried out on the temperature detection value and the second temperature so as to obtain first heating control information;
controlling the heating device to perform periodic heating according to the first heating control information;
or,
detecting the resistance of the heating device to obtain a resistance detection value;
PID calculation is carried out on the resistance detection value and the target resistance value to obtain second heating control information, wherein the target resistance value is determined by the second temperature;
and controlling the heating device to perform periodic heating according to the second heating control information.
Preferably, the detecting the temperature of the heat generating device to obtain a temperature detection value includes:
detecting the resistance of the heating device in a stop period of the heating device to obtain a resistance detection value;
and determining the temperature detection value of the heating device according to the resistance detection value.
Preferably, after determining the temperature detection value of the heat generating device according to the resistance detection value, the method further includes:
and compensating the temperature detection value according to the cold and hot machine state of the heating device.
Preferably, the method further comprises:
and compensating the second temperature according to the ambient temperature.
Preferably, the method further comprises:
judging whether the temperature detection value or the resistance detection value is in a preset range;
and when the temperature is not within the preset range, controlling the heating device to stop heating.
Preferably, the method further comprises:
judging whether the energy supply of the heating device exceeds a preset energy value in a preset period;
and when the preset energy value is exceeded, controlling the heating device to stop heating.
Preferably, the method further comprises:
in the fourth stage, the temperature of the heat generating device is gradually decreased from the second temperature by controlling the supply of energy to the heat generating device.
The present invention also constructs a heated aerosol-generating device comprising a power supply for a heat-generating device, for supplying energy to the heat-generating device, further comprising:
a control circuit for increasing the temperature of the heat generating device from an initial temperature to a first temperature by controlling the power supply of the heat generating device in a first stage; in a second phase, reducing the temperature of the heat generating device from the first temperature to a second temperature by controlling the energy supply of the heat generating device, wherein the second temperature is less than the first temperature; in the third stage, the temperature of the heat generating device is stabilized at the second temperature by controlling the power supply of the heat generating device.
Preferably, the control circuit includes:
the detection module is used for detecting the temperature/resistance of the heating device to obtain a temperature/resistance detection value;
the microprocessor is used for carrying out PID calculation on the temperature/resistance detection value and the second temperature/target resistance value so as to obtain heating control information, and controlling the heating device to carry out periodic heating according to the heating control information; wherein the target resistance is determined by the second temperature.
Preferably, the detection module includes: the power supply comprises a first switch tube, a second switch tube, a third switch tube and a reference resistor, wherein the first end of the first switch tube and the first end of the second switch tube are respectively connected with the positive end of the power supply, the second end of the first switch tube is connected with the first end of the reference resistor, the second end of the reference resistor and the second end of the second switch tube are respectively connected with the first end of the heating device, the second end of the heating device is connected with the first end of the third switch tube, the second end of the third switch tube is grounded, the first input end of the microprocessor is connected with the second end of the first switch tube, the second input end of the microprocessor is connected with the second end of the reference resistor, the third input end of the microprocessor is connected with the second end of the heating device, the first output end of the microprocessor is connected with the control end of the first switch tube, the second output end of the microprocessor is connected with the control end of the second switch tube, and the third output end of the microprocessor is connected with the control end of the third switch tube.
Preferably, the first switching tube is an NPN triode, the first end of the first switching tube is a collector, the second end of the first switching tube is an emitter, and the control end of the first switching tube is a base;
the second switching tube is a P-type field effect tube, the first end of the second switching tube is a source electrode, the second end of the second switching tube is a drain electrode, and the control end of the second switching tube is a grid electrode;
the third switching tube is an N-type field effect tube, the first end of the third switching tube is a drain electrode, the second end of the third switching tube is a source electrode, and the control end of the third switching tube is a grid electrode.
By implementing the technical scheme of the invention, the target temperature (the second temperature smaller than the first temperature) of the second stage is set, so that the cartridge can be ensured to continuously generate gel at the optimal temperature, and the heat conduction rate of the heating device to the cartridge is improved by maintaining the stability of the second temperature in the third stage, so that aerosol delivery with consistent characteristics without time variation can be provided.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a flowchart of a heating type aerosol generating method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing a temperature distribution of a heat generating device according to a first embodiment of the present invention;
fig. 3 is a structural view of a heating type aerosol generating device according to a first embodiment of the present invention;
fig. 4 is a circuit diagram of a heating type aerosol generating device according to an embodiment of the present invention;
fig. 5 is a schematic diagram showing a temperature distribution of a heat generating device in a second embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a flowchart of a heating type aerosol generating method according to a first embodiment of the present invention, and the heating type aerosol generating method according to the first embodiment is applied to a control circuit in a heating type aerosol generating device, and it should be understood that the heating type aerosol generating device further includes a heating device and a power supply. Wherein the power source is used for supplying energy to the heating device, the power source can be a battery, for example: rechargeable lithium ion batteries, nickel metal hydride batteries, nickel cadmium batteries or lithium-based batteries. The heat generating device is also called a heater, and may have various forms, for example, may be: the heat generating sheet, the heating needle, the heating rod, the heating wire or the wire, alternatively, the heat generating device may be a combination of two or more different forms of heat generating devices.
Referring to fig. 2, the heating type aerosol generating method of this embodiment specifically includes the following steps:
step S10, in a first stage, controlling energy supply of a heat-generating device to enable the temperature of the heat-generating device to be increased from an initial temperature to a first temperature;
in this step, the first stage is a time period of 0 to t1, and this stage is a rapid temperature increase stage. In this stage, the allowable temperature setting is in principle the temperature at which the desired volatile compounds in the cartridge volatilize rapidly, but below the temperature of the undesired compounds at which the vaporization temperature is higher. The first temperature is between 250 ℃ and 500 ℃ under normal air pressure and ambient temperature conditions. In the first stage, as shown in fig. 2, the temperature of the heat generating device increases rapidly in a curve shape with time. In one embodiment, the normal air pressure may be a normal atmospheric pressure and the normal temperature may be between 15 and 25 degrees celsius.
Step S20, in a second stage, reducing the temperature of the heat-generating device from the first temperature to a second temperature by controlling the energy supply of the heat-generating device, wherein the second temperature is smaller than the first temperature;
in this step, the second stage is a time period from t1 to t2, and the stage is a slow cooling stage. In this stage, in principle, uniformity of volatilization of the compounds is desired, and by slow cooling, a reduction in flue gas temperature is achieved. The slow descent process requires a smoke temperature that combines the consistency of the volatilization of the compound with comfort. In the second stage, as shown in fig. 2, the temperature of the heat generating device slowly decreases in a curve shape with time.
Step S30, in the third stage, the temperature of the heat-generating device is stabilized at the second temperature by controlling the energy supply of the heat-generating device.
In this step, the second stage is a period of time from t2 to t3, which is a temperature maintenance stage, for example, temperature fluctuation < = 1.5 ℃. In this stage, it is in principle desirable that the volatilization of the compounds is reasonable, maintaining consistency of the device mouthfeel volatilization. In the third stage, as shown in fig. 2, the temperature of the heat generating device is maintained in a horizontal straight line state over time.
In this embodiment, it is noted that the first temperature and the second temperature are selected to ensure that the heated aerosol-generating device continuously generates aerosol in the first, second and third phases, and that the first temperature and the second temperature may be determined based on a temperature range corresponding to the volatilization temperature of the aerosol-forming material in the substrate.
By the technical solution of this embodiment, by setting the target temperature of the second stage (the second temperature being smaller than the first temperature), it is ensured that the cartridge continuously generates gel at the optimal temperature, and by maintaining the stability of the second temperature in the third stage, the heat conduction rate of the heat generating device to the cartridge is increased, and therefore, aerosol delivery with consistent characteristics that do not change over time can be provided.
Further, the heating type aerosol generating method of the present invention further comprises:
the temperature of the heat generating device is maintained within a preset allowable temperature range in the second stage and the third stage by controlling the power supply of the heat generating device.
In this embodiment, the allowable temperature range depends on the aerosol-forming substrate. The aerosol-forming substrate releases some volatile compounds at different temperatures, some of the volatile compounds released from the aerosol-forming substrate being formed solely by the heating process, each volatile compound being released when above a characteristic release temperature. By controlling the maximum operating temperature below the release temperature of some volatile compounds, the release or formation of these components can be avoided. The maximum operating temperature is also selected to ensure that the substrate does not burn under normal operating conditions.
The allowable temperature range has an upper limit between 450 ℃ and 500 ℃ and a lower limit between 250 ℃ and 300 ℃. The first temperature may be between 300 ℃ and 450 ℃ and the second temperature may be between 300 ℃ and 400 ℃. Preferably, the second temperature is no higher than the combustion temperature of the undesirable compounds present in a conventional lit cigarette or about 380 degrees. The first stage is less than 20 seconds, the second stage is more than 20 seconds, and the third stage is 200 to 600 seconds.
In an alternative embodiment, in the second and third stages, the supply of energy to the heat generating device is controlled so that the temperature of the heat generating device reaches the second temperature (target temperature) by:
detecting the temperature of the heating device to obtain a temperature detection value;
PID calculation is carried out on the temperature detection value and the second temperature so as to obtain first heating control information;
and controlling the heating device to perform periodic heating according to the first heating control information.
In this embodiment, the temperature of the heat generating device is first detected, then the temperature detection value and the target temperature (second temperature) are input as PID, the first heating control information is output after PID operation, and finally the heating control information is converted into a heating duty value by an internal preset algorithm, and periodic heating is performed on the heat generating device.
In another alternative embodiment, in the second and third stages, the temperature of the heat generating device is brought to the second temperature (target temperature) by controlling the power supply of the heat generating device in such a manner that:
detecting the resistance of the heating device to obtain a resistance detection value;
PID calculation is carried out on the resistance detection value and the target resistance value to obtain second heating control information, wherein the target resistance value is determined by the second temperature;
and controlling the heating device to perform periodic heating according to the second heating control information.
In this embodiment, the resistance value of the heat generating device is detected first, then the resistance value detection value and the target resistance value (obtained by the second temperature inverse operation) are used as PID inputs, the second heating control information is output after the PID operation, and finally the second heating control information is converted into the heating duty ratio value through the internal preset algorithm, and the periodic heating is performed on the heat generating device.
While the two implementations of heating control of the heating device in the second and third stages have been described above, if PID adjustment in the first stage (rapid temperature increase stage) is also performed, a large overshoot may occur, and in order to avoid this, integral adjustment may not be performed when heating control is performed on the heating device in the first stage, or if the deviation between the temperature detection value and the target temperature value is greater than a certain set value, the integral term may not be counted, so that the influence of the integral term during the temperature increase process may be reduced, and smooth transition of the temperature control stage may be realized.
In addition, in the process of heating control of the heating device, if the heating control is performed once in each heating cycle, when the heating cycle is selected to be large, the temperature variation amplitude of the heating device in a single heating cycle is large; when the heating cycle is selected to be small, the heating device has a small temperature variation amplitude in a single heating cycle, but is limited by the performance of a microprocessor performing PID control, and may not meet the requirements of real-time data acquisition and processing. Therefore, in actual control, the control period may be set to be an integer multiple of the heating period, that is, the control period=heating period×n, N is an integer, and N > =1, so that synchronization of heating and control can be effectively ensured.
Further, in an alternative embodiment, the temperature detection value may be obtained according to the following manner:
detecting the resistance of the heating device in a stop period of the heating device to obtain a resistance detection value;
and determining the temperature detection value of the heating device according to the resistance detection value.
In this embodiment, first, it is explained that since the heat generating device is periodically heat-controlled by the duty signal, each heating cycle includes two parts of a heating period and a stop period, and the resistance value of the heat generating device is detected in the stop period. After the resistance detection value is obtained, a temperature detection value corresponding to the resistance detection value is calculated according to the corresponding relation between the resistance and the temperature.
Further, after determining the temperature detection value of the heat generating device according to the resistance detection value, the method further includes: and compensating the temperature detection value according to the cold and hot machine state of the heating device.
In this embodiment, first, a process is described in which when there is a field distribution in the temperature of the heat generating device, the heat conduction of the heat generating device substrate increases with an increase in heating time, and when there is the same resistance, there is a certain decrease in temperature, and this process is related to the heat conduction of the heat generating device substrate. That is, when the heating device itself is in a heat engine state, the volatilization state is different from the cold engine state, and in order to achieve a smoke temperature compatible with the consistency and comfort of the compound volatilization, a compensation algorithm is added internally, wherein the algorithm is a temperature drop caused by heat conduction, and the related terms are time and target temperature, namely, an actual temperature detection value t=f (R Heater )+f(t,T Target object ) This ensures that the entire pumping phase and the chiller conditions are substantially identical.
Further, the heating type aerosol generating method of the present invention further comprises:
and compensating the second temperature according to the ambient temperature.
In this embodiment, when the external ambient temperature changes, in order to maintain the experience of the product sucking stage, the target temperature (the second temperature) needs to be compensated, for example, when the winter ambient temperature (such as the ambient temperature is lower than 15 degrees celsius) is lower, the second temperature is adjusted to maintain the temperature sucked into the oral cavity; when the summer temperature is high (e.g., the ambient temperature is greater than 25 degrees celsius), the second temperature will be lowered to maintain the temperature of the suction to the mouth.
Further, in order to improve the safety performance in use, the heating type aerosol generating method of the present invention further comprises:
judging whether the temperature detection value is in a preset range, and controlling the heating device to stop heating when the temperature detection value is not in the preset range, wherein the upper limit of the preset range is 380-500 ℃ and the lower limit of the preset range is 250-300 ℃; or,
judging whether the energy supply of the heating device exceeds a preset energy value in a preset period, and controlling the heating device to stop heating when the energy supply exceeds the preset energy value.
In this embodiment, in the whole temperature control stage, the temperature value is calculated by detecting the resistance value of the heating device in real time, and when the resistance value or the temperature detection value of the heating device exceeds the specified upper and lower limits under abnormal conditions, the device is turned off in an emergency, so as to avoid the safety risk. In addition, when the energy supplied by the heating device in the preset period (unit time) is greater than the preset energy in the case of ambient temperature, the device can also perform emergency shutdown, so that the safety risk is avoided, for example, in the conventional case, the energy supply of the heating device is between 0.5 and 2.0W, and when the energy exceeds 3.0W in the preset period (for example, 1 to 5S), the emergency shutdown is performed.
As shown in fig. 3, the structure diagram of a heating type aerosol generating device according to a first embodiment of the present invention includes a housing 1, a heat generating device 2 accommodated in the housing, a power supply 3, and a control circuit 4, wherein the power supply 3 is configured to supply energy to the heat generating device 2; the control circuit 4 is configured to raise the temperature of the heat generating device 2 from an initial temperature to a first temperature by controlling the power supply of the heat generating device 2 in a first stage; in a second phase, reducing the temperature of the heat generating device 2 from the first temperature to a second temperature by controlling the energy supply of the heat generating device 2, wherein the second temperature is smaller than the first temperature; in the third stage, the temperature of the heat generating device 2 is stabilized at the second temperature by controlling the power supply of the heat generating device 2. In the present embodiment, the aerosol-forming substrate 5 is inserted into the housing 1 from one end of the housing at least partially, and the heat generating device 2 is inserted into the aerosol-forming substrate 5 to heat the inside of the aerosol-forming substrate 5, and the aerosol-forming substrate 5 is a cigarette. The heating device 2 includes a sheet-shaped heating body 21 and a fixing seat 22 for fixing the heating body.
Further, the control circuit comprises a detection module and a microprocessor, wherein the detection module is used for detecting the temperature/resistance of the heating device so as to obtain a temperature/resistance detection value; the microprocessor is used for carrying out PID calculation on the temperature/resistance detection value and the second temperature/target resistance value so as to obtain heating control information, and controlling the heating device to carry out periodic heating according to the heating control information; wherein the target resistance is determined by the second temperature.
Fig. 4 is a circuit diagram of a heating type aerosol generating device according to a first embodiment of the present invention, which includes a heat generating device Heater, a power source (not shown), and a control circuit, and the control circuit includes a microprocessor U1 and a detection module. Wherein, the detection module includes: the microprocessor comprises a first switch tube Q1, a second switch tube Q2, a third switch tube Q3 and a reference resistor R1, wherein the first end of the first switch tube Q1 and the first end of the second switch tube Q2 are respectively connected with a positive end BAT+ of a power supply, the second end of the first switch tube Q1 is connected with the first end of the reference resistor R1, the second end of the reference resistor R1 and the second end of the second switch tube Q2 are respectively connected with the first end of a heating device Heater, the second end of the heating device Heater is connected with the first end of the third switch tube Q3, the second end of the third switch tube Q3 is grounded, the first input end of the microprocessor U1 is connected with the second end of the first switch tube Q1, the third input end of the microprocessor U1 is connected with the second end of the heating device Heater, the first output end of the microprocessor U1 is connected with the control end of the first switch tube Q1, the second output end of the microprocessor U1 is connected with the control end of the third switch tube Q3.
In this embodiment, the first switching tube Q1 is an NPN transistor, the first end of the first switching tube Q1 is a collector, the second end of the first switching tube Q1 is an emitter, and the control end of the first switching tube Q1 is a base. The second switching tube Q2 is a P-type field effect tube, the first end of the second switching tube Q2 is a source electrode, the second end of the second switching tube Q2 is a drain electrode, and the control end of the second switching tube Q2 is a grid electrode. The third switching tube Q3 is an N-type field effect tube, the first end of the third switching tube Q3 is a drain electrode, the second end of the third switching tube Q3 is a source electrode, and the control end of the third switching tube Q3 is a grid electrode. It should be appreciated that in other embodiments, the three switching tubes may be other types of switching tubes.
The working principle of the circuit is described as follows:
first, the reference resistor R1 is a high-precision resistor, and the range of the resistance value of R1 is generally 1 time R for compatibility between the measurement precision and the heating value of the reference resistor R1 Heater Up to 10 times R Heater Between them. The output voltage range of the power supply is 2.8V-4.2V.
When the microprocessor U1 controls the second switching tube Q2 and the third switching tube Q3 to be conducted and controls the first switching tube Q1 to be cut off, a power supply forms a heating passage through the second switching tube Q2, the heating device Heater and the third switching tube Q3 to heat the heating device Heater. Furthermore, the microprocessor U1 can approximately calculate the current I of the heating path by the voltage of the third input terminal of the collector, i.e., i=vmeas 3/R Q3 Wherein R is Q3 The internal resistance of the third switching tube Q3 when turned on, wherein VMEAS3 is the voltage of the third input terminal of the microprocessor U1, so that it can determine whether an overcurrent occurs according to the current I, and perform overcurrent protection when the overcurrent occurs.
When the microprocessor U1 is controlledWhen the first switching tube Q1 and the third switching tube Q3 are turned on and the second switching tube Q2 is turned off, the power supply forms a resistance measuring path through the first switching tube Q1, the reference resistor R1, the heating device Heater and the third switching tube Q3, at the moment, the reference resistor R1 forms a voltage V1, and the heating device Heater forms a voltage V2. The microprocessor U1 determines V1 by collecting voltages at its first and second inputs, i.e. v1=meas1-meas2, and the microprocessor U1 determines V2 by collecting voltages at its second and third inputs, i.e. v2=meas2-meas3. Then, the resistance R of the Heater is calculated according to the following formula Heater I.e. R Heater = (MEAS 2-MEAS 3) R1/(MEAS 1-MEAS 2). Wherein MEAS1 is the voltage at the first input of the microprocessor U1, and MEAS2 is the voltage at the second input of the microprocessor U1.
It should be noted that, in a single heating period, the microprocessor U1 controls the enabling of the second switching tube Q2 according to the on time of the duty ratio, so as to realize the heating control of the heating device. In the off phase of the second switching tube Q2, part or all of the off phase can be selected to control the first switching tube Q1 to be enabled so as to calculate R Heater In order to avoid the large fluctuation of the temperature of the heating device in the process of conducting the second switching tube Q2 to inhibit and in the passing process, the single heating period time can be selected between 1mS and 50 mS.
In another embodiment of the present invention, the heated aerosol-generating method of this embodiment further comprises, after the third stage:
in the fourth stage, the temperature of the heat generating device is gradually decreased from the second temperature by controlling the supply of energy to the heat generating device.
In the step, the fourth stage is a period of time after t3, the temperature of the heating device is controlled to be slowly reduced along with the evaporation of the substrate, and finally, the purpose of achieving the expected atomization amount of the aerosol substrate is achieved at the end. In the fourth stage, as shown in fig. 5, the temperature of the heat generating device slowly decreases in a curve shape with time. Of course, in other embodiments, the ramp may also be slowly decreasing in shape.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (17)
1. A method of generating a heated aerosol, comprising:
in a first stage, raising the temperature of the heat generating device from an initial temperature to a first temperature by controlling the energy supply of the heat generating device;
in a second stage, when the temperature of the heat generating device reaches the first temperature, reducing the temperature of the heat generating device from the first temperature to a second temperature by controlling the energy supply of the heat generating device, wherein the second temperature is smaller than the first temperature;
in a third stage, stabilizing the temperature of the heat generating device at the second temperature by controlling the energy supply of the heat generating device;
and in the first stage, PID is adopted to regulate the temperature, integral regulation is not carried out in the PID regulation, or an integral term is not counted when the deviation between the temperature detection value and the target temperature value is larger than a certain set value.
2. A heating aerosol generating method according to claim 1, wherein,
in the first stage, the temperature of the heating device rises in a curve form with time;
in the second stage, the temperature of the heating device is reduced in a curve form;
in the third stage, the temperature of the heat generating device is stabilized in a straight line form.
3. The heated aerosol generating method according to claim 1, further comprising:
the temperature of the heat generating device is maintained within a preset allowable temperature range in the second stage and the third stage by controlling the power supply of the heat generating device.
4. A heated aerosol generating method according to claim 3 in which the allowable temperature range has an upper limit of between 450 ℃ and 500 ℃ and a lower limit of between 250 ℃ and 300 ℃.
5. A heating aerosol generating method according to claim 1, wherein,
the first temperature is between 300 ℃ and 450 ℃;
the second temperature is between 300 ℃ and 400 ℃.
6. A heating aerosol generating method according to claim 1, wherein,
the time of the first stage is less than 20 seconds;
the second stage takes more than 20 seconds;
the time of the third stage is 200 seconds to 600 seconds.
7. A heating aerosol generating method according to any one of claims 1 to 6, wherein in the second and third phases, the temperature of the heat generating device is brought to the second temperature by controlling the energy supply of the heat generating device in such a way that:
detecting the temperature of the heating device to obtain a temperature detection value;
PID calculation is carried out on the temperature detection value and the second temperature so as to obtain first heating control information;
controlling the heating device to perform periodic heating according to the first heating control information;
or,
detecting the resistance of the heating device to obtain a resistance detection value;
PID calculation is carried out on the resistance detection value and a target resistance value to obtain second heating control information, wherein the target resistance value is determined by the second temperature;
and controlling the heating device to perform periodic heating according to the second heating control information.
8. The heated aerosol generating method according to claim 7, wherein detecting the temperature of the heat generating device to obtain a temperature detection value comprises:
detecting the resistance of the heating device in a stop period of the heating device to obtain a resistance detection value;
and determining the temperature detection value of the heating device according to the resistance detection value.
9. The heating aerosol generating method according to claim 8, characterized by further comprising, after determining a temperature detection value of the heat generating device from the resistance detection value:
and compensating the temperature detection value according to the cold and hot machine state of the heating device.
10. The heated aerosol generating method according to claim 7, further comprising:
and compensating the second temperature according to the ambient temperature.
11. The heated aerosol generating method according to claim 7, further comprising:
judging whether the temperature detection value or the resistance detection value is in a preset range;
and when the temperature is not within the preset range, controlling the heating device to stop heating.
12. The heated aerosol generating method according to claim 1, further comprising:
judging whether the energy supply of the heating device exceeds a preset energy value in a preset period;
and when the preset energy value is exceeded, controlling the heating device to stop heating.
13. The heated aerosol generating method according to claim 1, further comprising:
in the fourth stage, the temperature of the heat generating device is gradually decreased from the second temperature by controlling the supply of energy to the heat generating device.
14. A heated aerosol generating device comprising a heat generating device, a power source for supplying energy to the heat generating device, characterized by further comprising:
a control circuit for increasing the temperature of the heat generating device from an initial temperature to a first temperature by controlling the power supply of the heat generating device in a first stage; in a second stage, when the temperature of the heat generating device reaches the first temperature, reducing the temperature of the heat generating device from the first temperature to a second temperature by controlling the energy supply of the heat generating device, wherein the second temperature is smaller than the first temperature; in a third stage, stabilizing the temperature of the heat generating device at the second temperature by controlling the energy supply of the heat generating device; and in the first stage, PID is adopted to regulate the temperature, integral regulation is not carried out in the PID regulation, or an integral term is not counted when the deviation between the temperature detection value and the target temperature value is larger than a certain set value.
15. The heated aerosol generating device of claim 14 wherein the control circuit comprises:
the detection module is used for detecting the temperature/resistance of the heating device to obtain a temperature/resistance detection value;
the microprocessor is used for carrying out PID calculation on the temperature/resistance detection value and the second temperature/target resistance value so as to obtain heating control information, and controlling the heating device to carry out periodic heating according to the heating control information; wherein the target resistance is determined by the second temperature.
16. The heated aerosol generating device of claim 15 wherein the detection module comprises: the power supply comprises a first switch tube, a second switch tube, a third switch tube and a reference resistor, wherein the first end of the first switch tube and the first end of the second switch tube are respectively connected with the positive end of the power supply, the second end of the first switch tube is connected with the first end of the reference resistor, the second end of the reference resistor and the second end of the second switch tube are respectively connected with the first end of the heating device, the second end of the heating device is connected with the first end of the third switch tube, the second end of the third switch tube is grounded, the first input end of the microprocessor is connected with the second end of the first switch tube, the second input end of the microprocessor is connected with the second end of the reference resistor, the third input end of the microprocessor is connected with the second end of the heating device, the first output end of the microprocessor is connected with the control end of the first switch tube, the second output end of the microprocessor is connected with the control end of the second switch tube, and the third output end of the microprocessor is connected with the control end of the third switch tube.
17. A heated aerosol generating device as defined in claim 16 wherein,
the first switching tube is an NPN triode, the first end of the first switching tube is a collector, the second end of the first switching tube is an emitter, and the control end of the first switching tube is a base;
the second switching tube is a P-type field effect tube, the first end of the second switching tube is a source electrode, the second end of the second switching tube is a drain electrode, and the control end of the second switching tube is a grid electrode;
the third switching tube is an N-type field effect tube, the first end of the third switching tube is a drain electrode, the second end of the third switching tube is a source electrode, and the control end of the third switching tube is a grid electrode.
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|---|---|---|---|---|
| CN114502021B (en) * | 2020-09-07 | 2024-02-23 | 韩国烟草人参公社 | Aerosol generating device |
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| WO2022077316A1 (en) * | 2020-10-15 | 2022-04-21 | 深圳麦克韦尔科技有限公司 | Aerosol generating device, aerosol generating method, control circuit, and storage medium |
| CN113040436B (en) * | 2021-04-27 | 2022-05-13 | 湖北中烟工业有限责任公司 | Temperature control method and device for aerosol device with air cooling system |
| JP7224519B2 (en) * | 2021-05-10 | 2023-02-17 | 日本たばこ産業株式会社 | Power supply unit for aerosol generator |
| WO2022239360A1 (en) * | 2021-05-10 | 2022-11-17 | 日本たばこ産業株式会社 | Power supply unit for aerosol generation device |
| WO2022239361A1 (en) * | 2021-05-10 | 2022-11-17 | 日本たばこ産業株式会社 | Power supply unit for aerosol generation device |
| JP7467768B2 (en) | 2021-05-10 | 2024-04-15 | 日本たばこ産業株式会社 | Aerosol generator power supply unit |
| CN113826963A (en) * | 2021-10-08 | 2021-12-24 | 广东中烟工业有限责任公司 | Aerosol generating device, aerosol generating system and heating control method of aerosol generating system |
| CN117322686A (en) * | 2022-06-27 | 2024-01-02 | 深圳麦时科技有限公司 | Aerosol generating method, apparatus, computer program product, and storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105446393A (en) * | 2012-09-11 | 2016-03-30 | 菲利普莫里斯生产公司 | Device and method for controlling an electrical heater and aerosol generating system |
| WO2016201911A1 (en) * | 2015-06-15 | 2016-12-22 | 深圳葆威道科技有限公司 | Temperature control system for electronic cigarette heating member |
| WO2017101840A1 (en) * | 2015-12-18 | 2017-06-22 | Byd Company Limited | Electric vehicle and vehicle-mounted charger and method for controlling the same |
| CN107692316A (en) * | 2012-12-28 | 2018-02-16 | 菲利普莫里斯生产公司 | Heated type aerosol generating device and the method for producing the consistent aerosol of characteristic |
| CN108618207A (en) * | 2018-05-31 | 2018-10-09 | 绿烟实业（深圳）有限公司 | Control the method and inhalator generator that aerosol generates in inhalator generator |
| CN208258102U (en) * | 2018-05-29 | 2018-12-18 | 深圳市舜宝科技有限公司 | A kind of electronic cigarette rapid heating circuit and electronic cigarette |
| CN109907374A (en) * | 2019-03-13 | 2019-06-21 | 深圳市丽福科技有限责任公司 | It is segmented heating type temperature control system and electronic cigarette |
| WO2019196514A1 (en) * | 2018-04-13 | 2019-10-17 | 赫斯提亚深圳生物科技有限公司 | Aerosol generating device and heating control method therefor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2609820A1 (en) * | 2011-12-30 | 2013-07-03 | Philip Morris Products S.A. | Detection of aerosol-forming substrate in an aerosol generating device |
-
2020
- 2020-04-02 CN CN202010257774.8A patent/CN111513365B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105446393A (en) * | 2012-09-11 | 2016-03-30 | 菲利普莫里斯生产公司 | Device and method for controlling an electrical heater and aerosol generating system |
| CN107692316A (en) * | 2012-12-28 | 2018-02-16 | 菲利普莫里斯生产公司 | Heated type aerosol generating device and the method for producing the consistent aerosol of characteristic |
| WO2016201911A1 (en) * | 2015-06-15 | 2016-12-22 | 深圳葆威道科技有限公司 | Temperature control system for electronic cigarette heating member |
| WO2017101840A1 (en) * | 2015-12-18 | 2017-06-22 | Byd Company Limited | Electric vehicle and vehicle-mounted charger and method for controlling the same |
| WO2019196514A1 (en) * | 2018-04-13 | 2019-10-17 | 赫斯提亚深圳生物科技有限公司 | Aerosol generating device and heating control method therefor |
| CN208258102U (en) * | 2018-05-29 | 2018-12-18 | 深圳市舜宝科技有限公司 | A kind of electronic cigarette rapid heating circuit and electronic cigarette |
| CN108618207A (en) * | 2018-05-31 | 2018-10-09 | 绿烟实业（深圳）有限公司 | Control the method and inhalator generator that aerosol generates in inhalator generator |
| CN109907374A (en) * | 2019-03-13 | 2019-06-21 | 深圳市丽福科技有限责任公司 | It is segmented heating type temperature control system and electronic cigarette |
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