CN109002066B - Electronic cigarette and temperature detection control method thereof - Google Patents
Electronic cigarette and temperature detection control method thereof Download PDFInfo
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- CN109002066B CN109002066B CN201810333852.0A CN201810333852A CN109002066B CN 109002066 B CN109002066 B CN 109002066B CN 201810333852 A CN201810333852 A CN 201810333852A CN 109002066 B CN109002066 B CN 109002066B
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000001514 detection method Methods 0.000 title claims description 100
- 239000003571 electronic cigarette Substances 0.000 title description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 124
- 239000000443 aerosol Substances 0.000 claims abstract description 46
- 238000005086 pumping Methods 0.000 claims description 30
- 239000000758 substrate Substances 0.000 claims description 23
- 230000000630 rising effect Effects 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000003044 adaptive effect Effects 0.000 claims 1
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- 241000208125 Nicotiana Species 0.000 description 9
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 9
- 230000004913 activation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000000391 smoking effect Effects 0.000 description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 5
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 229960002715 nicotine Drugs 0.000 description 4
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- 239000010936 titanium Substances 0.000 description 1
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- 230000001960 triggered effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The invention provides a heating control method for an aerosol generating device, which estimates heating temperature rise time according to the existing temperature and the target temperature of a heating part; then, driving the heating part with the maximum power to heat, and detecting the temperature/resistance value of the heating part at low frequency within the estimated heating temperature rise time; after the heating-up time, the temperature/resistance value stage of the heat-generating component is detected at high frequency to control the temperature within the safe temperature range required for generating aerosol. Therefore, time delay is reduced, safety is considered, a user can suck aerosol in a short time, and experience is good.
Description
Technical Field
The invention relates to the field of electronic products, in particular to an electronic cigarette and a temperature detection control method thereof.
Background
An aerosol generating device, commonly known as an electronic cigarette, is an electronic product that mimics a traditional cigarette and has a look, smoke, taste and feel similar to a traditional cigarette. Electronic cigarettes heat an aerosol-generating substrate (e.g., tobacco tar, tobacco smoke) by non-combustion heating to form an evaporant that is mixed with air to form an aerosol for the user to consume.
Because the electronic cigarette does not need to burn tobacco to generate tobacco smoke, harmful substances such as carbon monoxide, tar and the like which influence human health are not generated, and the harm to the health of a user can be reduced, so that the electronic cigarette is widely accepted as a tobacco substitute.
The aerosol generation temperature is typically as high as 350 c and typically the safe temperature range of the heat generating component is 280 c to 400 c under aerosol generating operating conditions.
In order to control the temperature of the heating component not to exceed the aerosol generating temperature range, the temperature of the heating component is detected in real time by the conventional electronic cigarette so as to achieve the purpose of temperature control, so that the temperature of the heating component is maintained within a safe temperature range value, and the phenomena of scorching and frying oil caused by overhigh temperature of a heating wire, poor taste caused by insufficient aerosol at too low temperature and the like are avoided.
When the temperature of the heating component rises to the aerosol generation temperature from the ambient temperature, the temperature of the heating component is detected in real time, so that the time delay is increased, the heating time is too long, and the user experience is poor.
Disclosure of Invention
In order for the user experience to be good and the aerosol to be inhaled in time, the heating wire needs to reach the aerosol generating temperature from the ambient temperature in a short time. In one aspect, the present invention provides a method of temperature control for an aerosol-generating device, comprising the steps of: s100, detecting the existing temperature of the heating part after receiving the starting signal, and estimating heating temperature rise time t1 according to the existing temperature and the target temperature of the heating part; s110 driving the heat generating component with maximum power to heat, and detecting the temperature of the heat generating component at a first low frequency within the estimated heating temperature rise time t 1; the first low frequency detection comprises at least one detection; s120, after the estimated heating temperature-rise time t1, continuously driving the heat-generating component with the maximum power, or driving the heat-generating component with the first power lower than the maximum power, and detecting the temperature of the heat-generating component at a high frequency to control the temperature within the safe temperature range required for generating aerosol; s130, after receiving the stop signal, stopping driving the heat generating component with the maximum power, and detecting or not detecting the temperature of the heat generating component with the second lowest frequency.
Preferably, detecting the temperature of the heat generating component includes: and detecting the temperature of the heating component, continuing to drive the heating component by the heating power required in the current step when the detected temperature is lower than the main working temperature of the heating component, and stopping outputting the power, namely, zero power to the heating component when the detected temperature is higher than the main working temperature of the heating component.
Preferably, the frequency of the first low frequency in step S110 is determined based on the heating temperature-increasing time t 1. The frequency interval of the first low frequency is in a range of 50ms to 200 ms.
Preferably, the frequency of the high frequency in step S120 is determined according to a temperature range required for generating the aerosol. The frequency interval of the high frequency is in a range of 1ms to 30 ms.
Preferably, the first low frequency detection in step S110 is a variable frequency detection. The frequency conversion means: dividing the temperature rise phase into N sub-phases, wherein P1 represents the length of a first sub-phase, P2 represents the length of a second sub-phase, …, PN represents the length of aN Nth sub-phase, and the detection is performed every time a1 in the first sub-phase P1, and is performed every time a2 in the second sub-phase P2, …, and is performed every time aN in the Nth sub-phase PN; wherein a1> a2> … > aN. The N sub-phases are not equally divided, P1> P2> … > PN, wherein the N sub-phases are divided according to temperature values or time values.
Preferably, the target temperature is a main operating temperature of the heat generating component, or a temperature value with a safety factor added based on the main operating temperature of the heat generating component, the temperature value being lower than the main operating temperature.
Preferably, the step S120 includes: instead, the heat generating component is driven at a first power that is lower than the maximum power.
In another aspect, the present invention also provides an aerosol-generating device for receiving an aerosol-generating article and heating an aerosol-generating substrate contained by the aerosol-generating article, the aerosol-generating device comprising: the switch component outputs a starting signal and/or a stopping signal according to the operation of a user, and the switch component is any one or the combination of a pneumatic switch, a key switch and a touch switch; a control section for controlling: in the temperature rise stage, carrying out first low-frequency temperature detection; in the temperature top stage, high frequency temperature detection is performed.
In another aspect, the invention also provides an aerosol-generating system comprising: an aerosol-generating article comprising an aerosol-generating substrate; an aerosol-generating device for fitting the aerosol-generating article; a heat generating component for heating the aerosol-generating substrate; wherein the heat-generating component may be contained in an aerosol-generating article, or an aerosol-generating device, or both; the switch component outputs a starting signal and/or a stopping signal according to the operation of a user, and the switch component is any one or the combination of a pneumatic switch, a key switch and a touch switch; control means, included in the aerosol-generating device, for controlling: in the temperature rising stage, carrying out first low-frequency temperature detection; in the temperature top stage, high frequency temperature detection is performed.
In another aspect, the invention also provides a control module for an aerosol-generating device comprising: a processor configured to execute instructions to enable the processor to: in the temperature rising stage, carrying out first low-frequency temperature detection; in the temperature top stage, high frequency temperature detection is performed.
In another aspect, the invention also provides a non-transitory computer readable storage medium containing instructions that, when executed by a processor, enable the processor to: in the temperature rising stage, carrying out first low-frequency temperature detection; in the temperature top stage, high frequency temperature detection is performed.
According to the invention, the first low-frequency temperature detection is carried out on the heating part in the temperature rising stage, so that the heating part can reach the main working temperature in a short time, the safety is ensured, and a user can timely suck aerosol, and the experience is good.
Drawings
Figure 1 is a schematic view of an aerosol-generating system according to an embodiment of the invention.
Figure 2 is a schematic diagram of functional modules of an aerosol-generating device according to an embodiment of the invention.
Fig. 3 is a functional block diagram of a control unit according to an embodiment of the present invention.
FIG. 4 is a flow chart illustrating a heating control method according to an embodiment of the invention.
FIG. 5 is a timing diagram of the temperature of the heat generating component during operation according to an embodiment of the present invention.
FIG. 6 is a timing diagram of the temperature of the heat generating component according to another embodiment of the present invention.
FIG. 7 is a timing diagram of the temperature of a heat generating component according to another embodiment of the present invention.
Detailed Description
In order to solve the problem of overlong heating time in the prior art and enable a user to experience good aerosol and suck the aerosol in time, the invention provides the temperature detection control method for the aerosol generating device, which can realize that the heating component reaches the aerosol generating temperature in a short time, has safety guarantee and can control the temperature of the heated heating component within the safety temperature range required by aerosol generation.
The general idea of the invention is as follows: in the temperature main rising stage, sparse/low-frequency temperature detection is carried out on the heating component; in the temperature top stage, dense/high frequency temperature sensing is performed to control the temperature within the safe temperature range required for aerosol generation.
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As used herein, ordinal terms (e.g., "first," "second," "third," etc.) used to refer to elements such as structures, components, operations, etc., do not by themselves connote any priority or order of the elements over another element, but are used merely to distinguish one element from another element having the same name (but for use of the ordinal term).
In the present invention, each puff during the smoking of a cigarette by a user is defined as one puff, and the duration of each puff lasts from the beginning of the puff to the end of the puff. During each suction process, the user inhales forcefully to regard the suction as the beginning; the user stops inhaling, and the end of the puff is considered.
In the present invention, the pumping interval time refers to an interval time between adjacent two pumping.
In the present invention, the start signal is a temperature-up control signal, and the stop signal is a temperature-down control signal. The start signal and the stop signal are not limited to the literal meaning, that is, the start signal includes but is not limited to the meaning of "outputting at maximum power", and there may also be the meaning of "outputting at a certain power"; the stop signal includes, but is not limited to, the meaning of "stop output power". For example, "supply of the power to the heat generating component is stopped in accordance with a stop signal", except for the meaning of "stop outputting the power", the meaning of "outputting the power to the heat generating component at another power different from the power" is not excluded unless the context otherwise defines.
In the present invention, "detecting temperature" includes, but is not limited to, literal meaning, including the meaning of detecting temperature and/or detecting resistance value, because there is a one-to-one correspondence between temperature and resistance value for a heat generating component made of a material having a temperature coefficient of resistance characteristic.
In the present invention, the "temperature rise phase" is a phase excluding the head time point and the tail time point of the phase, including the phase between the head time point and the tail time point.
Figure 1 is a schematic view of an aerosol-generating system according to an embodiment of the invention. Referring to figure 1, an aerosol-generating system 1 of the present invention comprises an aerosol-generating device 10 and an aerosol-generating article 20, the aerosol-generating device 10 being for use with an aerosol-generating article 20 comprising an aerosol-generating substrate 21 to generate an aerosol by heating the aerosol-generating substrate 21 comprised in the aerosol-generating article 20.
In particular, the aerosol-generating device 10 refers to a device to cooperate with an aerosol-generating article 20 (e.g. to receive or receive the aerosol-generating article 20) and interact with an aerosol-generating substrate 21 to generate an aerosol. The aerosol-generating device 10 may be a "smoking gun" type item.
The aerosol-generating article 20 may be a smoking article, referring to an article comprising an aerosol-generating substrate 21. In use, the aerosol-generating article 20 is fitted with (e.g. inserted or placed into) the aerosol-generating device 10 such that the aerosol-generating substrate 21 and the aerosol-generating device 10 are able to interact to produce an aerosol. The aerosol-generating article 20 may be disposable or may be in a form that can be replenished by the user replacing the disposable smoking article or manually adding an aerosol-generating substrate 21, such as tobacco tar, to continue drawing the aerosol.
By aerosol-generating substrate 21 is meant a substrate of volatile compounds which under certain conditions can form an aerosol, which may be in a liquid state or a solid state. The aerosol-generating substrate 21 is part of an aerosol-generating article 20, for example a smoking article. In the case of an aerosol-generating substrate 21, it is generally necessary to heat the aerosol-generating substrate to an aerosol-generating temperature to form an aerosol, which is mixed with air and then ultimately formed under certain conditions. The composition of the aerosol-generating substrate 21 in liquid form comprises tobacco tar which is heat convertible to a gaseous state, which may include glycerol (glycerin), propylene glycol, a flavour (or fragrance) and nicotine (nicotine), in which the nicotine and/or flavour may be replaced by tobacco extract. The tobacco tar may also contain no nicotine.
Figure 2 is a schematic block diagram of an aerosol-generating device according to an embodiment of the invention. As shown in fig. 2, the aerosol-generating device 10 includes a switch member 100, a power supply member 200, a heat-generating member 300, and a control member 400, wherein the control member 400 is electrically connected to the switch member 100, the power supply member 200, and the heat-generating member 300, respectively, and the power supply member 200 is used for supplying electric energy.
The power supply part 200 serves to supply power to the heat generating part 300 according to the control of the control part 400. Specifically, power supply unit 200 adjusts the output power and output time of the power supply to heat generating unit 300 according to the control of control unit 400. The power supply part 200 may be any suitable power supply and includes corresponding charging, power supply circuits and elements. For example, the power supply part 200 may be a battery such as a lithium ion battery, a lithium iron phosphate battery, a lithium manganese battery, a nickel chromium battery, or a nickel metal hydride battery.
The heat-generating component 300 is used to heat the aerosol-generating substrate 21 contained in the aerosol-generating article 20 to form an aerosol. The heat generating member 300 heats the aerosol-generating substrate 21 by increasing the temperature thereof in response to the power supplied from the power supply member 200 (controlled by the control member 400). The primary operating temperature of the heat-generating component 300 is the temperature at which the heat-generating component 300 heats the aerosol-generating substrate 21 contained in the corresponding aerosol-generating article 20 to form an aerosol vapour and to provide the aerosol as a desired heating temperature for a preferred use experience. The main operating temperature may be a temperature value or a temperature range. The control unit 400 adaptively monitors the temperature of the heat-generating component 300 and controls the temperature of the heat-generating component 300 not to exceed and/or fall too far below the primary operating temperature, or to remain within a safe temperature range, throughout the operation of the aerosol-generating device.
Specifically, for example, the heat generating component 300 may be made of a material having a temperature coefficient of resistance characteristic that has a corresponding relationship with the temperature of the material, and the control component 400 may obtain the temperature of the heat generating component 300 corresponding to the resistance value based on the measured resistance value of the heat generating component 300, thereby controlling the temperature of the heat generating component 300 or controlling the power supplied to the heat generating component 300. The material of the heat generating component 300 includes, but is not limited to, platinum, copper, nickel, titanium, iron, ceramic-based PTC material, polymer-based PTC material, etc., and the resistance value thereof changes with the temperature change of the heat generating component 300 (for example, for a positive temperature coefficient material, the resistance value increases with the temperature increase, and for a negative temperature coefficient material, the resistance value decreases with the temperature increase), so that the temperature change parameter of the heat generating component 300 can be measured by monitoring the resistance change of the heat generating component 300. In other embodiments, the heat generating component 300 may also be made of a conventional heat generating material without the temperature coefficient of resistance, and an additional temperature sensor may be added beside the heat generating component to obtain the temperature of the heat generating component.
In other embodiments, the heat generating component 300 may not be disposed within the aerosol-generating device 10, but rather disposed within the aerosol-generating article 20, and the heat generating component 300 may be electrically connected to the power supply component 200 and the control component 400 when the aerosol-generating article 20 is mated (e.g., inserted or placed into) the aerosol-generating device 10. Both the aerosol-generating device 10 and the aerosol-generating article 20 may be provided with the heat-generating component 300. The present invention is not limited to the specific arrangement of the heat generating component 300.
The switching section 100 outputs a start signal or a stop signal according to the operation of the user, and supplies the start signal or the stop signal to the control section 400. The switching element 100 may be embodied, for example, as a pneumatic switch, or a gas-sensitive switch, or a differential air pressure-sensitive switch. When a user smokes, the pneumatic/gas-sensitive/air pressure difference sensing switch can monitor the air pressure difference caused by the air flow in the device due to the inspiration of the user, and outputs a corresponding starting signal or a corresponding stopping signal according to the monitoring result. In one embodiment, when the pneumatic switch detects the air pressure difference (meaning that the user starts pumping), an activation signal is output, and the control unit 400 receives the activation signal and controls the power supply unit 200 to output power to the heat generating unit to start heating. After the start signal is outputted, the pneumatic switch continuously monitors whether the gas flows into the apparatus, and when the gas does not flow into the apparatus any more (meaning that the pumping by the user is finished), a stop signal is outputted, and the control part 400 receives the stop signal and controls the power supply part 200 to stop/drive the heat generating part at a lower power. The start signal is a signal for controlling the control part 400 to control the temperature of the heat generating part 300 to increase, and when the control part 400 receives the start signal, the control part 200 controls the power supply part 200 to output the maximum power to increase the temperature of the heat generating part 300, so that the temperature of the heat generating part 300 can be increased to the target temperature in a short time; the stop signal is a signal for controlling the temperature of the heat generating component 300 to decrease by the control component 400, and when the control component 400 receives the stop signal, the power supply component 200 is controlled to stop outputting power (i.e. outputting zero power) or output another power (lower than the maximum power but greater than zero) to decrease the temperature of the heat generating component 300, preferably outputting at zero power, thereby reducing the complexity of the circuit and the control process. Briefly summarized, the start signal is a temperature-up control signal and the stop signal is a temperature-down control signal.
In one embodiment, the switch unit 100 is a pneumatic switch, when the user starts pumping, the pneumatic switch outputs an activation signal due to a pressure difference, and the control unit 400 receives the activation signal and controls the power supply unit 200 to drive the heat generating unit 300 at the maximum power, so that the heat generating unit 300 rapidly rises from the ambient temperature to the main operating temperature. The heat generating component 300 is then controlled to maintain a safe temperature range to continue generating aerosol, either while still being driven at maximum power or instead being driven at a first power (less than maximum power but greater than zero), as will be described in more detail below. When the user finishes pumping, the pneumatic switch outputs a stop signal because of no air pressure difference, and after the control unit 400 receives the stop signal, the output power is stopped, that is, the heating unit 300 is driven by zero power, and the heating unit 300 starts to cool down rapidly. Alternatively, after receiving the stop signal, the control unit 400 drives the heat generating unit 300 with a lower power, such as a second power, and the heat generating unit 300 is not directly cooled to the ambient temperature, but is maintained at a standby temperature lower than the main operating temperature.
In another embodiment, the switch unit 100 is a manual switch, such as a key or touch switch, which outputs a start signal or a stop signal according to whether the user presses or touches the switch unit 100. In this embodiment, the control process is the same as that of the previous embodiment except that the switching means is different. For example, when the user presses or touches the switch unit 100, the start signal is outputted to control the power supply unit 200 to drive the heat generating unit 300 at the maximum power, and the heat generating unit 300 rapidly rises from the ambient temperature to the main operating temperature. The power supply unit 200 then controls the heat generating unit 300 to maintain a safe temperature range to continuously generate aerosol, and during this process, the power supply unit may still be driven at the maximum power, or may be driven at the first power (lower than the maximum power but greater than zero), as will be described in detail below. When the switch member 100 is pressed or touched again, a stop signal is output. The start signal may be output when the user presses or touches the switch member 100 and keeps the pressed or touched state, and the stop signal may be output when the user stops pressing or touching the switch member 100. Or the closing time of the switch does not exceed a certain threshold (such as 0.3 second), which indicates that the switch is touched by mistake, the starting signal is not output, and the heating component does not work; if the switch closing time exceeds the threshold (e.g. 0.3 second), it indicates that the switch system is operated intentionally, and then the start signal is outputted and the heat generating component starts to operate.
In other embodiments, the switch unit 100 can be combined with a pneumatic switch, a key switch, a touch switch, or other types of switch elements. The invention is not limited to the specific composition of the switch block 100. In the embodiment where the switch unit 100 is used by combining a pneumatic switch, a key switch, or a touch switch, when the user presses or touches the switch unit 100, the user outputs a first start signal, and the control unit 400 receives the first start signal and controls the power supply unit 200 to drive the heat generating unit 300 at the maximum power. After a preset time, the user may be informed by an indicator light display or by a vibration. Then, the user starts pumping, triggers the pneumatic switch, outputs a second start signal, and after the control unit 400 receives the second start signal, controls the power supply unit 200 to continue driving the heat generating unit 300 with the maximum power or the first power, so that the heat generating unit 300 quickly reaches the main operating temperature. And then maintained/controlled within a safe temperature range, during which it may still be driven at maximum power, or at a first power (less than maximum power but greater than zero), as will be described in more detail below. When the user finishes pumping, the pneumatic switch is triggered to output a stop signal, and the control unit 400 stops outputting power (i.e., zero power) to the heat generating unit after receiving the stop signal, or drives the heat generating unit with a second power (smaller than the maximum power and the first power) and maintains a standby temperature.
The control unit 400 adaptively monitors the temperature/resistance of the heat-generating component 300 and controls the temperature of the heat-generating component 300 not to exceed and/or fall too far below the main operating temperature to remain within a safe temperature range throughout the operation of the aerosol-generating device.
FIG. 3 is a block diagram of a control component according to an embodiment of the present invention. As shown in fig. 3, the control unit 400 includes a storage unit 410 and a main control unit 420.
In one embodiment, when the heat generating component 300 is made of a material with a temperature coefficient of resistance characteristic, the main control unit 420 can obtain the corresponding temperature parameter by detecting the magnitude of the resistance of the heat generating component 300. In another embodiment, when the heat-generating component 300 is made of a conventional heat-generating material, a separate temperature detecting unit, such as a temperature sensor, may be installed near the heat-generating component 300. The temperature sensor is used to sense the temperature of the heat generating component 300.
As an illustrative, non-limiting example, the storage unit 410 may include one or more memory devices, such as RAM, ROM, flash memory, or a combination thereof. The memory unit 410 also stores instructions, the relationship between the resistance value and the temperature of the heat-generating component, and one or more threshold values (and/or parameter values). In another aspect, the memory may store instructions that, when executed by the processor, enable the processor to perform operations according to aspects of the invention, such as one or more of the operations described in FIG. 4.
The main control unit 420 controls the power supply part 200 to output power to the heat generating part 300 or stop outputting power according to the output signal of the switching part, based on the detected resistance value of the heat generating part 300 and the information provided from the storage unit 420.
The master control unit 420 may include one or more processors. The processor may be connected to a memory 410. For example, the processor may be configured to access or receive instructions 411 in the memory 410, a relationship 412 between resistance values and temperatures of the heat-generating components, and/or one or more thresholds 413 (and/or parameter values). In some implementations, the processor may also include another memory (not shown), such as a cache memory or other local memory. The processor may be configured to execute software (e.g., a program represented by one or more instructions) stored in a respective memory 410 (e.g., a non-transitory computer-readable storage medium). For example, a processor (e.g., one or more processors) may be configured to execute instructions 411, enabling the processor to perform one or more operations as shown in fig. 4.
Fig. 4 shows a flow chart of a temperature detection control method for aerosol-generating heating, which is applicable to the aerosol-generating system 1 and is specifically controlled by the control component 400 of the aerosol-generating device 10, according to an embodiment of the present invention. The temperature detection control method is used to heat an aerosol-generating substrate 21 in an aerosol-generating article 20 after the aerosol-generating article 20 is fitted to an aerosol-generating device 10.
The temperature detection control method comprises the following steps:
in step S100, after receiving the start-up signal, detecting the current temperature of the heat generating component 300, estimating a heating temperature rise time based on the current temperature of the heat generating component and the target temperature thereof, and based on the maximum power; go to step S110.
In particular, the activation signal may be from a switch component, but also from other triggers, such as triggering the activation signal when the aerosol-generating article is inserted into the aerosol-generating device, the invention not being limited.
With respect to the existing temperature of the heat generating component, there are two cases: (1) when the user is not sucking for a long time, the existing temperature of the heat generating component is the ambient temperature, typically below 40 ℃. (2) If the puff interval is short (e.g. 4s), or the aerosol-generating device is set to a standby temperature, or otherwise, during the smoking process of the user, this may result in the existing temperature of the heat-generating component at the beginning of each puff being higher than the ambient temperature, e.g. 100 c or above, but lower than the main operating temperature.
As for the target temperature of the heat generating component, the main operating temperature of the heat generating component may be set as the target temperature, or the main operating temperature may be subtracted by a safety range value as the target temperature. For example, in one embodiment, where the primary operating temperature of the heat-generating component is 350 ℃, then the target temperature may be set to 350 ℃ or 300 ℃, leaving a safety redundancy of 50 ℃; or the target temperature is set to 250 c leaving a safety redundancy of 100 c.
In step S110, the heating component 300 is driven with the maximum power to heat, and the temperature/resistance value of the heating component 300 is sparsely/infrequently detected within the estimated heating temperature rise time; go to step S120.
In particular, parameters of the entire aerosol-generating device, such as the charge level of the battery, the temperature of the environment, etc., are typically also detected prior to heating, and heating is initiated when all parameters are normal. The invention is not limited.
The control part 400 controls the heat generating part 300 to be driven at the maximum power to start aerosol generation from the ambient temperature to the main operating temperature (e.g., 350 ℃) in a short time. During the whole heating and warming process, the control unit 400 detects the temperature of the heat generating component 300 sparsely/at a low frequency, for example, once every 100ms (100ms is just an example, and the invention is not limited thereto), so that the user can inhale the aerosol with little waiting time, and the experience is better. The sparse/low frequency detection here is relative to the dense/high frequency detection of the following step S120. Sparse/low frequency detection may be determined from the estimated heating time, e.g. if the estimated heating time is 250ms, it may be determined to detect 1 time every 100ms or every 200 ms; it can also be determined to test 1 every 50ms if the estimated heating time is 100 ms. Or directly determining that only 1 time or 2 times of heating temperature rise is detected, and the like, regardless of the estimated heating time. During the heating up process, the purpose of detecting the temperature is to avoid the temperature from rising up due to a fault for safety, and if the temperature is too high, the output power is stopped.
However, if the control unit 400 still needs to detect the temperature of the heat generating component 300 in real time during the whole heating process from the ambient temperature to the main operating temperature, the time delay is increased, the time for raising the temperature from the ambient temperature to the main operating temperature is too long, and the user is likely to suck the raw oil, and the experience is poor. If the detection is not carried out at all, the potential safety hazard exists.
In step S120, after the heating time, the heating component is continuously driven with the maximum power or the first power, and the temperature/resistance value of the heating component 300 is detected densely/frequently to control the temperature within the safety temperature range required for generating the aerosol; go to step S130.
Specifically, after the above-described heating rise time, it means that the temperature of the heat-generating member 300 has reached the target temperature (e.g., 350 ℃). In order to control and/or maintain the heated temperature of the heat generating component within the safe temperature range required for generating aerosol, and to avoid scorching and frying oil due to the over-high temperature of the heat generating component, the temperature/resistance value of the heat generating component 300 needs to be detected intensively, for example, every 10ms (10ms is just an example, and the invention is not limited thereto). In the intensive detection stage, if the detection result is not higher than the main working temperature, the heat generating component 300 is continuously driven to heat with the maximum power or the first power; the temperature/resistance value detection is performed again after 10ms, and if the detection result is higher than the working temperature, the power supply to the heating component 300 is stopped, which is equivalent to driving the heating component 300 with zero power; then, the temperature/resistance value detection is carried out after 10ms, and if the detection result is lower than the main working temperature, the heating component 300 is driven to heat by the maximum power or the first power; then, after 10ms, temperature/resistance value detection is carried out; continuously circulating; until a stop signal is received.
In this embodiment, the temperature/resistance detection interval of 10ms is merely an example, and the present invention is not limited thereto. The preferred range of the detection interval may be 1ms to 30 ms.
The setting of the detection interval and the safe temperature range are relevant. For example, the main operating temperature is 350 ℃ and the safety temperature range is around 350 ℃ ± 50 ℃, where the maximum acceptable detection interval can be estimated to be 30 ms. In other words, the smaller the detection interval, the smaller the fluctuation range of the main operating temperature, and the larger the detection interval, the larger the fluctuation range of the main operating temperature.
In the present invention, the temperature rise phase in "the heat generating component is not subjected to temperature detection in the temperature rise phase" does not include the head time point and the tail time point of the phase because temperature detection is possible at the head time point and the tail time point. The setting of the detection interval is also related to the drive power. If driven at a first power (less than maximum power) to be controlled within the same safe temperature range, the maximum acceptable detection interval may be greater than if driven at maximum power. For example, to control within the same safe temperature range of 350 ℃ ± 50 ℃, if driven at maximum power, the maximum acceptable detection interval is estimated to be 30 ms; if driven at a maximum power of 2/3 (first power), then the estimated maximum acceptable detection interval may be 40 ms; this is merely an exemplary description.
In step S130, after receiving the stop signal, stopping supplying power to the heat generating component 300; or driving the heat generating component 300 at a second power; and starts timing, waits for the next start signal (i.e., waits for the next pumping), and detects the temperature/resistance value of the heat generating component 300 with or without sparseness/low frequency, to step S140.
Specifically, the reception of the stop signal means that the user stops pumping, (1) the supply of power to the heat-generating component 300 is stopped, and the heat-generating component 300 is naturally cooled. Or (2) driving the heat generating component 300 at a second power (less than the maximum power) such that the heat generating component 300 is maintained at a standby temperature at which no aerosol is generated when no suction is applied. In the case of (1), the temperature of the heat generating component may be detected or not detected at a low frequency, and the frequency may be determined according to the pumping interval time. Typically, the average time between two puffs is about 6 seconds, and then the detection can be set every 1 second, or every 500ms, or even more frequently, and the invention is not limited. In the case of the case (2), the temperature of the heat generating component is not detected during the process of lowering from the main operating temperature to the standby temperature, and a temperature lowering time can be estimated from the standby temperature and the main operating temperature, and the temperature is not detected during the temperature lowering time, and after the temperature lowering time has elapsed, the standby temperature is maintained by detecting the temperature at a high frequency, which is the same principle as the principle of maintaining the standby temperature.
The temperature reduction process is non-pumping time, so that the time delay can not be brought to a client by temperature detection, and the user experience can not be influenced. The temperature sensing is performed to improve safety against abnormal temperature surges caused by faults. The frequency of temperature detection during temperature drop can be set as desired.
In step S140, if the control part 400 receives the next start signal, it returns to step S100 and repeats the entire process. If the timed length (i.e., the no-pump time) exceeds a certain threshold, then shutdown occurs.
It should be understood that the threshold is typically not less than the puff interval time, but is much greater than the puff interval time. Typically, the pumping intervals averaged 6 s. For example, a threshold of 2 minutes may be selected, with over 2 minutes meaning that the customer does not want to smoke any more, and a shutdown operation is performed.
The invention does not carry out dense temperature detection in all time of the user smoking process, but places the dense temperature detection at the top stage of the temperature, and only carries out sparse/low-frequency temperature detection at the temperature main rising stage. Thus, the user does not experience a delay, and the user experience is not affected. But also improves the safety.
The present invention treats each puff of the user as a puff. The above steps S100 to S140 are applied to each pumping process.
Fig. 5 is a graph of the temperature of the aerosol-generating device 10 and/or the heat-generating component 300 within the aerosol-generating article 20 as a function of time using a method of aerosol-generating heating temperature control according to an embodiment of the invention as shown in fig. 4.
In fig. 5, T is the main operating temperature of the heat generating component 300, which is also the aerosol generating temperature. When the user starts the first suction, the heating temperature-increasing time is estimated to be T1 (e.g., 250ms) from the current temperature (ambient temperature) and the target temperature (T) of the heat-generating component 300, and then the heat-generating component 300 is driven at the maximum power for a time period of T1, and during the heating temperature rise of T1, the temperature/resistance value of the heat-generating component is detected 2 times, as shown in fig. 5, where the first detected temperature is T1 ', and the second detected temperature is T2', both of which are less than the target temperature. After time t1, the temperature/resistance of the heat generating component starts to be detected intensively, and the detection interval is Δ t (for example, 10 ms). After time T1, the temperature of the heat generating component is detected for the first time as T1. T1 may be the same as T or different from T because the estimate at time T1 may have errors. In fig. 5, T1< T, the heating element continues to be driven at maximum power for heating; after Δ T, the temperature/resistance value detection is performed again, and if the detection result is T2 and T2> T, the power supply to the heat generating component is stopped; then, after delta T, carrying out temperature/resistance value detection again, and if the detection result is lower than T, driving the heating part to heat with the maximum power; then, after delta t, carrying out temperature/resistance value detection; continuously circulating; until the stop signal (end of pumping) is received at time t2, the power supply to the heat generating component is stopped, and the temperature of the heat generating component naturally decreases.
This process of the heat generating component rising from the existing temperature to the target temperature is called the temperature rise phase; then, the aerosol generation phase is carried out, the temperature is maintained/controlled within a safe temperature range of the main working temperature, and the phase is called a temperature top phase; and after the pumping is finished, entering a temperature reduction stage.
In the temperature main rising stage, the frequency of detecting the temperature/resistance value of the heating part is very low, and the detection frequency can be only 1 time or 2 times or other detection frequencies, which are far less than the detection frequency in the temperature top stage; in the temperature top stage, carrying out temperature/resistance value intensive detection on the heating part; in the temperature drop stage, the temperature/resistance value of the heat generating component may not be detected, and the temperature detection may also be performed, which is not limited in the present invention.
The low-frequency detection is arranged at the temperature rising stage to reduce time delay and prevent the temperature from rising sharply due to the failure of the aerosol generating device and the occurrence of cotton burning for safety consideration. The high frequency detection is provided in the top temperature stage in order to control/maintain the temperature within a safe temperature range of the main operating temperature so that a sufficient amount of aerosol is generated. The temperature sensing is also provided during the temperature drop phase for safety reasons in case of failure of the aerosol-generating device.
In one embodiment, the temperature main-up phase is driven at maximum power, the temperature top phase is also driven at maximum power, and the temperature down phase is driven at zero power. In this embodiment, the design of both the circuit and the control method is relatively simple.
In another embodiment, the temperature main-rise phase is driven at maximum power, the temperature top phase is driven at a first power lower than the maximum power, and the temperature fall phase is driven at zero power or a second power lower than the maximum power. The first power lower than the maximum power is set so that the fluctuation range of the top stage of the temperature is not so large (also in the case of the detection interval); the second power, which is lower than the maximum power, is set to maintain a standby temperature when not pumping.
In fig. 5, the aerosol-generating temperature fluctuation range of the top temperature stage is controlled to be in the range of (T1 to T2), which is associated with the detection interval Δ T, and the driving power.
If the pumping interval between two pumping is long, the temperature of the heat generating component may be lowered to the ambient temperature before the next start signal (second pumping) is received at time t3, and the whole heating process is repeated. It can be easily seen that fig. 5 shows a process with two puffs.
If the ambient temperature is high, the temperature of the heat generating component 300 does not drop so fast, or the pumping interval between two pumping is short, and it is likely that the temperature of the heat generating component has not dropped to the ambient temperature when the next activation signal (second pumping) is received at time t3, where the temperature change curve is shown in fig. 6.
Referring to fig. 6, the heating control process of the first suction is the same as that of fig. 5, but at the second suction start time T3 of fig. 6, the detected temperature value is T3; estimating a heating time period T4-T3 according to the existing temperature T3 and the target temperature T of the heating component; then, the heating part is driven by the maximum power, and in the heating time period of T4-T3, the temperature/resistance value is detected for 1 time, and the detection result is still lower than the target temperature T; after time t4, the temperature/resistance of the heat generating component starts to be detected intensively, and the detection interval is Δ t (for example, 10 ms). The subsequent steps are the same as in fig. 5.
It is readily seen that figure 6 also shows the process of two-port aspiration. Fig. 6 differs from fig. 5 only in that: because the pumping interval is short, the existing temperature of the heating part during the pumping of the second port is higher than the ambient temperature, and only 1 time of temperature/resistance value is detected in the temperature rising stage. The other heating control processes are the same.
Fig. 7 is another graph of the temperature of the aerosol-generating device 10 and/or the heat-generating component 300 within the aerosol-generating article 20 as a function of time using an aerosol-generating heating method according to an embodiment of the invention as shown in fig. 4.
Fig. 7 and 5 differ only in that: from the present temperature (ambient temperature) and the target temperature (T), the estimated heating time T1' is shorter than T1 in fig. 5 because of the safety factor taken into account in the estimation process. Thus, during the heating period t 1', the temperature/resistance value is detected 1 time. The temperature detected at T1' is T4 since T4< T, heating continues at maximum power. After Δ T, the temperature was again detected as T1, since T1 is still less than T, and heating continues at maximum power. After Δ T, the temperature was again detected as T2, because T2> T, the output power was stopped. The process is repeated until the pumping is finished. The heating control method is the same as that of fig. 5 except that the estimated heating time period is shorter so that the detection frequency in the main temperature rise period is lower than that of fig. 5.
It is readily seen that fig. 7 also shows the process of two-port aspiration.
It should be understood that fig. 5, 6 and 7 are merely schematic representations, not drawn to scale, with certain details exaggerated and possibly omitted for clarity.
In the above embodiments, the temperature is detected with a low frequency during the temperature rising process, and the frequency of the low frequency is a fixed frequency value, so that the control process is simplified. In other embodiments, a frequency conversion method can be adopted in the temperature rise process, for example, the main working temperature is 350 ℃, the temperature main rise stage is divided into three stages from the temperature rise, the detection is carried out once every 80ms before 180 ℃, the detection is carried out once between 180 ℃ and 250 ℃, the detection is carried out once every 50ms, the detection is carried out once between 250 ℃ and 300 ℃, and the detection is carried out once every 20 ms.
For another example, the temperature rise stage may be divided into three stages from time to time, for example, the estimated heating time period is 300ms, and the 300ms may be divided into three stages of 0 to 150ms, 150ms to 250ms, and 250ms to 300ms, and the detection may be performed at intervals of 80ms, 50ms, and 20ms, respectively.
The numerical values herein are merely for convenience of description, and the present invention is not limited thereto.
In summary, the aerosol generation temperature control method, device and system provided by the present invention perform low-frequency temperature/resistance detection in the temperature rising stage and high-frequency temperature/resistance detection in the temperature top stage, so that the user does not feel a delay caused by temperature/resistance detection, and the safety is improved.
It should be understood that the above preferred embodiments are only for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above preferred embodiments or substitute some technical features thereof; and all such modifications and alterations are intended to fall within the scope of the appended claims.
Claims (16)
1. A temperature detection control method for an aerosol-generating device, each puff comprising a temperature rise phase, a temperature top phase, and a temperature fall phase, temperature detection being performed in all three phases, the aerosol-generating device comprising a heat-generating component and a separate temperature sensor for sensing the temperature of the heat-generating component, characterized in that:
the frequency of temperature detection is adaptive; in the temperature rising stage, the heating part is driven to heat by the maximum power, and the temperature sensor is enabled to carry out first low-frequency temperature detection so as to reduce time delay; in the temperature top stage, driving the heating component to heat at a first power lower than the maximum power, and enabling the temperature sensor to perform high-frequency temperature detection; in a temperature drop phase, driving the heat generating component with zero power or second power lower than the first power, and enabling the temperature sensor to perform second low-frequency temperature detection, wherein the frequency of the second low frequency is determined according to pumping interval time;
the first low frequency temperature detection comprises at least one temperature detection;
the temperature rising stage is a stage of rising the temperature of the heating component from the existing temperature to a target temperature, the temperature top stage is a stage of maintaining/controlling the temperature within a safe range of the main working temperature, and the temperature falling stage is a stage of falling the temperature from the safe range of the main working temperature to the existing temperature at the next time of pumping;
estimating the time length of the temperature rising stage according to the current temperature and the target temperature of the heating part, and determining the frequency of the first low frequency according to the time length;
the frequency interval value range of the first low frequency is 50 ms-200 ms; the interval value range of the high-frequency is 1 ms-30 ms, wherein the high-frequency is determined according to a safety range of the main working temperature;
adopting frequency conversion temperature detection in the temperature rising stage;
the frequency conversion means: dividing the temperature rise phase into N sub-phases, wherein P1 represents the length of a first sub-phase, P2 represents the length of a second sub-phase, …, PN represents the length of aN Nth sub-phase, and the detection is performed every time a1 in the first sub-phase P1, and is performed every time a2 in the second sub-phase P2, …, and is performed every time aN in the Nth sub-phase PN; wherein a1> a2> … > aN;
the N sub-phases are not equally divided, P1> P2> … > PN, wherein the N sub-phases are divided according to temperature values or time values.
2. The temperature detection control method according to claim 1, wherein the temperature detection includes:
and detecting the temperature of the heating component, continuing to drive the heating component with the heating power required by the current stage when the detected temperature is lower than the main working temperature of the heating component, and stopping outputting the power, namely, zero power to the heating component when the detected temperature is higher than the main working temperature of the heating component.
3. A temperature control method for an aerosol-generating device comprising a heat-generating component and a separate temperature sensor for sensing the temperature of the heat-generating component, characterized in that each puff comprises the steps of:
s100, detecting the existing temperature of the heating part after receiving the starting signal, and estimating heating temperature rise time t1 according to the existing temperature and the target temperature of the heating part;
s110 driving the heat generating component with maximum power to heat, and reducing the time delay by detecting the temperature of the heat generating component with the temperature sensor at a first low frequency within the estimated heating temperature rise time t 1; the first low frequency detection comprises at least one detection;
s120, after the estimated heating temperature rise time t1, driving the heat generating component at a first power lower than the maximum power, and frequently causing the temperature sensor to detect the temperature of the heat generating component to control the temperature within a safe temperature range required for generating aerosol;
s130, after receiving the stop signal, driving the heat generating component with zero power or a second power lower than the first power, and causing the temperature sensor to detect the temperature of the heat generating component at a second low frequency, wherein the frequency of the second low frequency is determined according to the pumping interval time;
the first low frequency in step S110 is determined based on the heating temperature-rise time t 1;
the frequency interval value range of the first low frequency is 50 ms-200 ms; the interval value range of the high frequency is 1 ms-30 ms, wherein the high frequency is determined according to a temperature range required for generating aerosol;
the first low frequency detection in step S110 is frequency conversion detection;
the frequency conversion means: dividing the temperature rise phase into N sub-phases, wherein P1 represents the length of a first sub-phase, P2 represents the length of a second sub-phase, …, PN represents the length of aN Nth sub-phase, and the detection is performed every time a1 in the first sub-phase P1, and is performed every time a2 in the second sub-phase P2, …, and is performed every time aN in the Nth sub-phase PN; wherein a1> a2> … > aN;
the N sub-phases are not equally divided, P1> P2> … > PN, wherein the N sub-phases are divided according to temperature values or time values.
4. The temperature control method of claim 3, wherein detecting the temperature of the heat-generating component comprises:
and detecting the temperature of the heating component, continuing to drive the heating component by the heating power required in the current step when the detected temperature is lower than the main working temperature of the heating component, and stopping outputting the power, namely, zero power to the heating component when the detected temperature is higher than the main working temperature of the heating component.
5. The temperature control method according to claim 3, characterized in that: the target temperature is a main operating temperature of the heat generating component, or a temperature value in which a safety factor is increased based on the main operating temperature of the heat generating component, the temperature value being lower than the main operating temperature.
6. The temperature control method of claim 3, wherein the step S130 further comprises: and starting timing, and if the timing exceeds a threshold value, shutting down the computer.
7. An aerosol-generating device for receiving an aerosol-generating article and heating an aerosol-generating substrate contained by the aerosol-generating article, the aerosol-generating device comprising:
the switch component outputs a starting signal and/or a stopping signal according to the operation of a user, and the switch component is any one or the combination of a pneumatic switch, a key switch and a touch switch;
a heat-generating component and a separate temperature sensor for sensing a temperature of the heat-generating component;
a control component for:
s100, detecting the existing temperature of the heating part after receiving the starting signal, and estimating heating temperature rise time t1 according to the existing temperature and the target temperature of the heating part;
s110 driving the heat generating component with maximum power to heat, and reducing the time delay by detecting the temperature of the heat generating component with the temperature sensor at a first low frequency within the estimated heating temperature rise time t 1; the first low frequency detection comprises at least one detection;
s120, after the estimated heating temperature rise time t1, driving the heat generating component at a first power lower than the maximum power, and frequently causing the temperature sensor to detect the temperature of the heat generating component to control the temperature within a safe temperature range required for generating aerosol;
s130, after receiving the stop signal, driving the heat generating component with zero power or a second power lower than the first power, and causing the temperature sensor to detect the temperature of the heat generating component at a second low frequency, wherein the frequency of the second low frequency is determined according to a pumping interval time;
the first low frequency in step S110 is determined based on the heating temperature-rise time t 1;
the frequency interval value range of the first low frequency is 50 ms-200 ms;
the interval value range of the high frequency is 1 ms-30 ms, wherein the high frequency is determined according to a temperature range required for generating aerosol;
the first low frequency detection in step S110 is frequency conversion detection;
the frequency conversion means: dividing the temperature rise phase into N sub-phases, wherein P1 represents the length of a first sub-phase, P2 represents the length of a second sub-phase, …, PN represents the length of aN Nth sub-phase, and the detection is performed every time a1 in the first sub-phase P1, and is performed every time a2 in the second sub-phase P2, …, and is performed every time aN in the Nth sub-phase PN; wherein a1> a2> … > aN;
the N sub-phases are not equally divided, P1> P2> … > PN, wherein the N sub-phases are divided according to temperature values or time values.
8. An aerosol-generating device according to claim 7, wherein detecting the temperature of the heat-generating component comprises:
and detecting the temperature of the heating component, continuing to drive the heating component by the heating power required in the current step when the detected temperature is lower than the main working temperature of the heating component, and stopping outputting the power, namely, zero power to the heating component when the detected temperature is higher than the main working temperature of the heating component.
9. An aerosol-generating device according to claim 7 or 8, wherein: the target temperature is a main operating temperature of the heat generating component, or a temperature value in which a safety factor is increased based on the main operating temperature of the heat generating component, the temperature value being lower than the main operating temperature.
10. An aerosol-generating device according to claim 7 or 8, wherein the step S130 further comprises: and starting timing, and if the timing exceeds a threshold value, shutting down the computer.
11. An aerosol-generating system, comprising:
an aerosol-generating article comprising an aerosol-generating substrate;
an aerosol-generating device for fitting the aerosol-generating article;
a heat generating component for heating the aerosol-generating substrate; wherein the heat-generating component may be contained in an aerosol-generating article, or an aerosol-generating device, or both;
the switch component outputs a starting signal and/or a stopping signal according to the operation of a user, and the switch component is any one or the combination of a pneumatic switch, a key switch and a touch switch;
control means incorporated in the aerosol-generating device for performing the temperature control method of any of claims 3 to 6.
12. An aerosol-generating system according to claim 11, wherein the heat-generating component is provided in the aerosol-generating device or the heat-generating component is provided in the aerosol-generating article.
13. A control module for an aerosol-generating device, comprising:
a processor and configured to execute instructions to enable the processor to perform the temperature control method of any of claims 3-6.
14. The control module of claim 13, further comprising a switch coupled to the processor, the switch configured to output the start signal and/or stop signal in accordance with a user operation.
15. The control module of claim 13, further comprising a memory coupled to the processor and configured to store the instructions.
16. A non-transitory computer readable storage medium containing instructions that, when executed by a processor, enable the processor to perform the temperature control method of any of claims 3-6.
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| CN109002066B (en) * | 2018-04-13 | 2020-02-28 | 赫斯提亚深圳生物科技有限公司 | Electronic cigarette and temperature detection control method thereof |
| CN109730360A (en) * | 2019-01-21 | 2019-05-10 | 深圳麦克韦尔股份有限公司 | The control method of electronic atomization device and its heating element |
| CN110179159A (en) * | 2019-05-28 | 2019-08-30 | 筑思有限公司 | Temprature control method and electronic cigarette for electronic cigarette |
| CN110301678A (en) * | 2019-07-12 | 2019-10-08 | 深圳市福来科技有限公司 | It is a kind of not burnt the dual-temperature measure and control device and method of smoking set based on heating |
| WO2021016994A1 (en) * | 2019-08-01 | 2021-02-04 | 深圳葭南科技有限公司 | Electronic cigarette control method used for better restoring taste of e-liquids and electronic cigarette |
| CN110771960A (en) * | 2019-09-12 | 2020-02-11 | 深圳麦时科技有限公司 | Electronic smoking set, heating method thereof and computer storage medium |
| CN112369707B (en) * | 2020-04-19 | 2022-07-19 | 湖北中烟工业有限责任公司 | Appliance for heating tobacco without burning and power supply control method |
| CN112586808A (en) * | 2020-12-01 | 2021-04-02 | 深圳市吉迩科技有限公司 | Atomizing core heating method and system and aerosol generating device |
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- 2018-04-13 CN CN201810333852.0A patent/CN109002066B/en not_active Expired - Fee Related
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| CN107407941A (en) * | 2015-04-15 | 2017-11-28 | 菲利普莫里斯生产公司 | Electric heater is controlled with the apparatus and method of limit temperature with time distribution curve according to desired temperature |
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Also Published As
| Publication number | Publication date |
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| CN109002066A (en) | 2018-12-14 |
| WO2019196515A1 (en) | 2019-10-17 |
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