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WO2019196003A1 - Dispositif d'ensemble à fumer et son procédé de mesure et de régulation de température - Google Patents

Dispositif d'ensemble à fumer et son procédé de mesure et de régulation de température Download PDF

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Publication number
WO2019196003A1
WO2019196003A1 PCT/CN2018/082460 CN2018082460W WO2019196003A1 WO 2019196003 A1 WO2019196003 A1 WO 2019196003A1 CN 2018082460 W CN2018082460 W CN 2018082460W WO 2019196003 A1 WO2019196003 A1 WO 2019196003A1
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WO
WIPO (PCT)
Prior art keywords
temperature
generating device
heat generating
real
power source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/082460
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English (en)
Chinese (zh)
Inventor
王国庆
孙国立
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cig-Green Industrial (shenzhen) Co Ltd
Original Assignee
Cig-Green Industrial (shenzhen) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Cig-Green Industrial (shenzhen) Co Ltd filed Critical Cig-Green Industrial (shenzhen) Co Ltd
Priority to PCT/CN2018/082460 priority Critical patent/WO2019196003A1/fr
Publication of WO2019196003A1 publication Critical patent/WO2019196003A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • 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
    • A24F40/20—Devices using solid inhalable precursors

Definitions

  • the present disclosure relates to the technical field of an electronic smoking device, in particular a heated non-combustion smoking device, and the present invention relates in particular to a heated non-combustion smoking device capable of accurately measuring temperature and temperature, and an accurate temperature measurement for such a smoking device
  • the field of temperature control methods relates to the technical field of an electronic smoking device, in particular a heated non-combustion smoking device, and the present invention relates in particular to a heated non-combustion smoking device capable of accurately measuring temperature and temperature, and an accurate temperature measurement for such a smoking device.
  • the existing heated non-combustion smoking device can heat the smoking article by, for example, a plug-in electric heating baking method, that is, insert the ceramic heating piece in the electronic cigarette into the smoking article, so that the ceramic heating piece heats the smoking article to Produces smoke for the user to smoke.
  • a plug-in electric heating baking method that is, insert the ceramic heating piece in the electronic cigarette into the smoking article, so that the ceramic heating piece heats the smoking article to Produces smoke for the user to smoke.
  • the heater temperatures of some electronic smoking implements are controlled to be within a particular temperature range so that the smoking article does not produce and release undesirable volatile compounds or even burn.
  • the heater temperature needs to be monitored. For example, it is known to directly measure the temperature of a heater by a separate temperature sensor, or to design the heater to function as both a resistance heater and a temperature sensor to determine its resistance by its temperature coefficient of resistance. This type of method is costly.
  • a temperature measuring method is also known in which an additional resistor is connected in series between the heater and the grounding device, and the voltage across the two terminals is measured by a microcontroller connected to the additional resistor to determine the real-time heater resistance. The value, based on which the heater temperature is adjusted in real time via a microcontroller directly connected to the resistor.
  • the present disclosure is directed to an electrically heated non-combustion smoking article apparatus that at least partially solves the aforementioned problems by an innovative temperature measurement temperature control circuit arrangement.
  • the present disclosure provides a smoking device that includes:
  • the power source being coupled to the heat generating device for providing power to the heat generating device;
  • controller unit for connecting to the heat generating device and the power source, the controller unit being configured to control a power supply from the power source to the heat generating device to adjust the temperature of the heat generating device
  • controller unit is further configured to: determine resistance R of the solid heat-generating device in real time when the power supplied by the power source using a power source in series between the heating device and the temperature sensing resistor, in order to achieve a temperature of the heating device Real-time monitoring allows the heating device to maintain a constant preset target temperature.
  • the ground disturbance generated in the prior art can be eliminated, thereby allowing the temperature detection accuracy to be improved to improve the temperature control accuracy.
  • At least one comparison amplifier unit is coupled between the controller unit and the temperature sensing resistor for monitoring a voltage V2-V1 across the temperature sensing resistor and amplifying a signal representative of the detected voltage across the two ends, The amplified signal is then transmitted to the controller unit.
  • the comparison amplifier unit outputs the amplified voltage signal using the gain of the comparison amplifier unit based on the detected signal of the voltage across the two ends.
  • V OUT (I LOAD x R SHUNT )GAIN+V REF
  • V OUT represents the voltage output from the output pin OUT of the comparison amplifier unit
  • I LOAD represents the real-time current flowing through the heat-generating device
  • R SHUNT represents the known resistance value of the temperature-sensing detection resistor
  • GAIN represents the gain of the comparison amplifier unit. That is, the amplification factor, V REF represents the ground voltage applied to the reference pin of the comparison amplifier unit;
  • V OUT (V2-V1) GAIN + V REF .
  • the comparison amplifier unit is connected in parallel to both sides of the temperature sensing resistor external thereto.
  • the temperature sensing resistor is integrated inside the comparison amplifier unit.
  • the signal can be amplified to avoid the detection precision of the voltage signal V2-V1 being too small, so that the accuracy of the temperature measurement and temperature control can be further improved.
  • controller unit can be configured to detect a short circuit of the heat generating device for short circuit protection.
  • comparison amplifier unit can be configured to perform short circuit detection of the power source to ground for short circuit protection.
  • the operational safety of the device can also be improved.
  • the determination of the real-time resistance is:
  • the controller unit is further configured to compare the real resistance value R and the preset target temperature with a solid heat-generating device corresponding to a preset resistance value R of the heat generating devices preset, the device in order to monitor the temperature of the heating in accordance with the comparison result reaches the preset target temperature .
  • the controller unit then controls the power supply of the power source to the heat generating device based on the comparison.
  • the controller unit includes a microcontroller that is programmable to control the power supply from the power source to the heat generating device via PWM control via a switch coupled between the power source and the heat generating device.
  • the switch is a pMOS type switch tube.
  • the predetermined target temperature of the heat generating device is fixed or adjustable.
  • controller unit is configured to:
  • Controlling the power source is reduced in the case of real-time greater than a preset value R of the real resistance value R of the heat generating device to a predetermined power is supplied to the heating means so that the temperature fall below the preset target temperature.
  • the smoking device is a heated non-combustion smoking device.
  • the smoking implement is configured to receive a smoking article that contacts the heat generating device.
  • the power source is a rechargeable battery.
  • the present disclosure also relates to a temperature measurement and temperature control method for a smoking article device, the smoking device comprising: a heat generating device for heating a smoking article; a power source connected to the heat generating device for The heat generating device provides power; and a controller unit for connecting to the heat generating device and the power source, the controller unit being configured to control a power supply from the power source to the heat generating device to adjust the heat generating device temperature, the method being characterized in that
  • the heating device is determined by the controller unit by the resistance R of the real-time real-time power source power supply, in order to achieve real-time monitoring of the temperature of the heating device, so that the heat generating devices Can maintain a constant preset target temperature.
  • At least one comparison amplifier unit is provided, which is connected between the controller unit and the temperature detecting resistor for monitoring the voltage V2-V1 across the temperature detecting resistor and representing the detected voltage across the two ends.
  • the signal is amplified so that the amplified signal is then transmitted to the controller unit.
  • the amplified voltage signal is output using the gain of the comparison amplifier unit based on the detected signal across the voltage.
  • V OUT (I LOAD x R SHUNT )GAIN+V REF
  • V OUT represents the voltage output from the output pin OUT of the comparison amplifier unit
  • I LOAD represents the real-time current flowing through the heat-generating device
  • R SHUNT represents the known resistance value of the temperature-sensing detection resistor
  • GAIN represents the gain of the comparison amplifier unit. That is, the amplification factor, V REF represents the ground voltage applied to the reference pin of the comparison amplifier unit;
  • V OUT (V2-V1) GAIN + V REF .
  • the comparator amplifier unit is connected in parallel to both sides of the temperature sensing resistor external thereto.
  • the temperature sensing resistor is integrated inside the comparison amplifier unit.
  • controller unit is used to detect a short circuit of the heat generating device for short circuit protection.
  • short-circuit detection of power source to ground is performed by the comparison amplifier unit for short-circuit protection.
  • the determination of the real-time resistance is:
  • the controller unit compares the resistance value R and the preset target temperature with a solid heat-generating device corresponding to a preset resistance value R of the heat generating devices preset, the device in order to monitor the temperature of the heating in accordance with the comparison result reaches a preset target temperature.
  • the controller unit controls the power supply of the power source to the heat generating device based on the comparison result.
  • the power supply from the power source to the heat generating device is controlled by PWM control of the controller unit via a switch connected between the power source and the heat generating device.
  • the switch is a pMOS type switch tube.
  • the predetermined target temperature of the heat generating device is fixed or adjustable.
  • control is carried out as follows:
  • Controlling the power source is reduced in the case of real-time greater than a preset value R of the real resistance value R of the heat generating device to a predetermined power is supplied to the heating means so that the temperature fall below the preset target temperature.
  • the smoking device is a heated non-combustion smoking device.
  • the smoking implement is configured to receive a smoking article that contacts the heat generating device.
  • the power source is a rechargeable battery.
  • Figure 1 is a schematic view showing the structural elements of the basic components of the heating type non-combustion smoking device
  • Fig. 2 shows a TCR curve in which the resistance value of the heat generating device shown on the ordinate becomes larger as the temperature shown on the abscissa increases;
  • FIG. 3 is a schematic circuit diagram showing temperature measurement and temperature control of a heat generating device for a heating type non-burning smoking device according to the present disclosure
  • FIG. 4 is a detailed circuit diagram showing the temperature measurement and temperature control of the heat generating device for the heating type non-combustion smoking device according to the present disclosure, from which the corresponding positions and connection relationships of the respective components can be seen;
  • Figure 5 shows, by way of example, a comparison amplifier unit for use in the present disclosure
  • FIG. 6 is a block diagram showing a simple flow of a temperature measurement and temperature control method according to an embodiment of the present disclosure.
  • the terms “installation”, “connected”, “coupled”, “connected”, “fixed” and the like are to be understood broadly, and may be, for example, a fixed connection, or a It is a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • a fixed connection or a It is a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • the term "smoke article”, which is equivalent to "aerosol-generating article”, refers to an article comprising a smoking substrate or an aerosol-forming substrate capable of releasing a volatile compound. These volatile compounds can form an aerosol, and such volatile compounds can be released by heating the aerosol to form a matrix.
  • the aerosol-forming substrate may conveniently be part of an aerosol-generating article or a smoking article.
  • an aerosol is a suspension of solid particles or droplets or both solid particles and droplets in a gas such as air.
  • the aerosol-forming substrate can comprise a tobacco-containing material comprising a volatile tobacco flavoring compound that is released from the substrate upon heating.
  • the aerosol-forming substrate may comprise a tobacco-free material.
  • the aerosol-forming substrate may also include an aerosol former.
  • suitable aerosol formers are glycerin and propylene glycol.
  • the aerosol-generating article or smoking article produces an aerosol that is directly inhalable into the user's lungs through the user's mouth.
  • the aerosol-generating article or smoking article can be disposable.
  • the term "smoke article" is generally used hereinafter.
  • the present disclosure relates to a smoking article apparatus, and more particularly to a heated non-combustion smoking article apparatus, and more particularly to an electrically heated non-combustion smoking rod 100.
  • a smoking article apparatus and more particularly to a heated non-combustion smoking article apparatus, and more particularly to an electrically heated non-combustion smoking rod 100.
  • the term "pipestick" is used below for related description.
  • the tobacco rod 100 typically includes a heating chamber 31 into which the smoking article F is inserted, and further includes a heat generating device L, a power source Sb, and a controller unit 50.
  • the controller unit 50 is coupled to the heat generating device L and the power source Sb, and the controller unit is also connectable to a user interface such as a button or display 60 for transmitting information about the tobacco rod to the user, such as display system information, such as battery power. , temperature, status of the smoking article, other information, or a combination thereof.
  • display system information such as battery power.
  • the smoking article F has been pushed into the interior of the heating chamber 31 to be in contact with the heat generating device L, here the inside of the smoking substrate into which the heat generating device is inserted into the smoking article.
  • the smoking article F releases a series of volatile compounds at different heating temperatures.
  • the power source disposed within the housing of the tobacco rod 100 can be any suitable source of power, such as a DC voltage source for the battery.
  • a DC voltage source for the battery for example, it is a rechargeable lithium ion battery.
  • the power source can be a nickel metal hydride battery, a nickel cadmium battery, or a lithium based battery. The following simply uses the term "battery" Sb for illustration.
  • the heat generating device L also referred to as a heater, may take any suitable form, such as the illustrated heat generating sheet L. It can also be in the form of a heated needle or rod that passes through the center of the smoking article when heated. Alternatively, the heat generating device may take the form of a housing or substrate having a different conductive portion or a resistive metal plate. Alternatively, the heat generating device may be a disc heater or a combination of a disc heater and a heating pin or rod, and may also include a heating wire or wire such as Ni-Cr (nickel-chromium), platinum, gold, silver, tungsten. Or alloy wire or heating plate. Optionally, but not necessarily, the heater element can be deposited in or on the rigid carrier material. Further, one or more heat generating devices may be provided as needed, and the heat generating device may be appropriately arranged to heat the smoking article most efficiently.
  • the term "heating device” is used hereinafter as an example and for simplicity.
  • the tobacco rod 100 may optionally include means for detecting the smoking article for detecting the presence of the smoking article F in proximity to the heat generating device L on the heat transfer path and/or Its characteristics, and the signal of the presence of the smoking article F is sent to the controller unit 50 connected to the device.
  • the tobacco rod 100 is provided with an interface 40 at an end remote from the heating chamber 31, which interface 40 can be coupled to the controller unit 50.
  • the interface can be connected to an external device such as a smart terminal, such as a mobile phone, a pad, a computer, etc., to transmit related information such as a temperature detection signal, temperature adjustment information, and the like in a one-way or two-way manner.
  • the interface 40 can be designed to be used for charging at the same time, in which case the interface 40 is connected to the battery Sb (not shown here).
  • the heated non-combustion smoking implement apparatus 100 may also be provided with an extractor 20 and a housing 10 that operates in conjunction with the extractor, if desired.
  • the first end of the extractor 20 is mounted in the heating chamber 31, and the second end thereof is provided with an insertion chamber 21 into which the smoking article F is inserted.
  • the outer casing 10 is hollowly disposed on the end side of the tobacco rod 100 provided with a heating chamber.
  • the outer casing 10 is here arranged such that the extractor 20 can be moved into or out of the heating chamber 31 in a rotational or translational manner.
  • controller unit 50 In the process of working on the heating non-combustion smoking device, in order to enhance the user experience, it is necessary to perform certain temperature monitoring and control on the heat generating device. This is typically done by controller unit 50.
  • the controller unit can be arranged to receive relevant information and transform the received information to generate an output.
  • the controller unit can include any type of computing device, computing circuit, or any type of processor or processing circuit capable of executing a series of instructions stored in memory.
  • the controller unit may include multiple processors and/or multi-core central processing units (CPUs) and may include any type of processor, such as a microprocessor, digital signal processor, microcontroller, or the like.
  • the controller unit can also include a memory to store data and/or algorithms to execute a series of instructions.
  • the term "memory” can include a mechanism that provides (eg, stores and/or transmits) information in a machine readable format, such as a processor, computer, or digital processing device.
  • the memory can include read only memory (ROM), random access memory (RAM), magnetic disk storage media, optical storage media, flash memory devices, or any other volatile or nonvolatile storage device.
  • ROM read only memory
  • RAM random access memory
  • microcontroller in the case where the controller unit 50 includes a microcontroller (MCU). But the reminder is that this is not restrictive.
  • the heating temperature of the heat generating device L is controlled by the microcontroller Cr, it is necessary to detect the operating temperature of the heat generating device L.
  • the temperature of the heat generating device can be detected by a dedicated temperature sensor.
  • the temperature of a heat generating device element is determined by monitoring its resistivity. The resistivity increases with increasing temperature. Thus, the resistivity known at any given time can be used to derive the actual operating temperature of the heat generating device.
  • the microcontroller controls the power source based on the measured temperature signal to turn on and off the switch between the battery Sb and the heat generating device L, thereby achieving precise control of the temperature of the heated non-burning smoking device, for example, to meet different cigarettes.
  • the temperature requirements of the product are described below.
  • a temperature-sensing temperature control circuit of a tobacco rod wherein the heat-generating device is connected to the battery by a wire, and an additional resistor connected in series with the heat-generating device is connected to the grounding device.
  • the microcontroller collects the voltage across the additional resistor directly through the input, and adjusts the current supplied to the heating device via the output based on the calculated resistance of the heating device through the output.
  • the measured temperature output is not accurate for the following reasons: the additional resistance for detection introduces ground disturbances; the sense voltage varies with the battery current causing the battery voltage to change.
  • the present disclosure aims to provide a temperature measurement and temperature control circuit to improve temperature detection accuracy and improve temperature control accuracy.
  • a temperature detecting resistor Rs is connected in series between the battery Sb and the heat generating device L.
  • the resistance r of the temperature detecting resistor Rs is known, and the current flowing through the temperature detecting resistor Rs is equal to the current flowing through the heat detecting device L through the temperature detecting resistor, thereby detecting the temperature by detecting the temperature.
  • I U / R.
  • the battery voltage is constant at a relatively fixed voltage value and the battery voltage value U source represents the current voltage across the heat generating device, and the battery voltage is directly determined by the microcontroller Cr, it has been determined based on the foregoing.
  • the microcontroller can adjust the real-time heat-generating device resistance value with the preset The resistance values corresponding to the temperature of the heating device are compared.
  • the microcontroller performs corresponding regulation according to the comparison result: if the resistance value of the real-time heating device is equal to the preset resistance value corresponding to the preset target temperature, it indicates that the temperature of the heating device has reached a range of, for example, about 250° C.-450° C.
  • the preset target temperature can be controlled by the microcontroller through the switch Q1 to reduce the power supply to the heat generating device to maintain the temperature; if the real-time resistance value is less than the preset resistance value, the control supplies the additional power to the heat generating device to make the temperature Raising to a preset target temperature; if the real-time resistance is greater than the preset resistance, the control reduces or even suspends power supply to the heat generating device to lower its temperature to a preset target temperature.
  • the battery positive electrode is connected in series with the temperature detecting resistor Rs through the switch Q1, and then in the terminal 1 of the heat generating device L, and the terminal 2 of the heat generating device L is connected to the battery negative electrode.
  • the temperature detecting resistor Rs is used to provide a voltage value for detecting the resistance value of the heat generating device.
  • the switch Q1 is, in particular, a p-channel MOSFET, that is, a pMOS field effect transistor, hereinafter referred to as a MOS transistor.
  • the temperature sensing resistor Rs any suitable type of resistor can be used, but the choice is usually determined by the following factors: accuracy required at small load currents; power consumption at maximum load current. In other words, it is necessary to select such a temperature detecting resistor based on a trade-off between the measurement accuracy and the power consumption of the detecting resistor.
  • a comparison amplifier unit Am as shown in FIG. 4 may be connected in parallel across the temperature detecting resistor Rs.
  • comparison amplifier unit first compares the voltage signals V2 and V1 input from the temperature detecting resistor to calculate V2-V1, which is, for example, step 100 shown in FIG. 6;
  • Amplification means that the differential voltage signal V2-V1 input from the temperature detecting resistor Rs may be too small, which may result in insufficient detection accuracy, for example, due to possible interference from noise, etc., and thus the signal needs to be amplified, and the amplified signal is then It is transmitted to the microcontroller Cr, which corresponds to step 200 shown in FIG. Of course this is the case when such a unit is provided. If such a comparison amplifier unit is not provided, the voltage across the resistor Rs is directly detected by the controller and calculated and compared accordingly.
  • the pins 4 and 5 of the comparison amplifier unit Am are connected to both sides of the temperature detecting resistor Rs through resistors R12 and R13, respectively, to monitor the two ends of the resistor Rs by comparing the input voltage signals V2 and V1.
  • the voltage is V2-V1 (corresponding to step 100); in the loop formed by the comparison amplifier unit and the resistor Rs, wherein the series resistors R12, R13 are arranged to suppress the pulse voltage of the small energy of the detection signals V1 and V2 to damage the comparison amplifier unit .
  • the wire between pin 4 and resistor R12 and the capacitor C5 between pin 5 and resistor R13 are used to increase the immunity to external interference.
  • the resistors R12, R13, and capacitor C5 are not indispensable here, and can be set according to actual needs.
  • the resistances R12 and R13 are generally 1% accurate, and their resistances must be the same, for example, 3 ohms in the figure; in general, the accuracy of the capacitor C5 is required to be ⁇ 1 PF (ply method).
  • the pin 6 of the comparison amplifier unit Am is a voltage feedback pin, that is, the input signal for inputting the amplified feedback signal to the corresponding pin of the associated microcontroller; and the reference of the comparison amplifier unit Pin 1 indicates the reference voltage access pin, pin 2 indicates the reference ground access pin, and pin 3 indicates the power supply access pin, which is connected to the microcontroller's integrated circuit power supply pin to supply power to it;
  • a capacitor C6 is provided in the loop formed by the pin 1, 2, 3 and the microcontroller integrated circuit power supply, where the capacitor is a filter capacitor for voltage regulation.
  • comparison amplifier unit Am for example, an embodiment of such a comparison amplifier unit schematically shown in Fig. 5 can be seen, and its simple internal circuit configuration is shown in Fig. 5.
  • the corresponding pins are similar to those described above in connection with FIG. 4, and thus will not be described again here.
  • the comparator amplifier unit integrates a very accurate low-drift gain resistor network such as resistor R3-R4, which maximizes the achievable accuracy while allowing small parallel resistors such as resistors R1-R2. These gain resistors are built into this device to improve matching and temperature drift stability.
  • one end of the gain resistor R4 is connected to the connection terminal between the sense resistor Rs and the battery Sb through the pin 4 (IN+), and the other end is connected to the non-inverting input terminal of the operational amplifier U1A of the comparison amplifier unit.
  • One end of the gain resistor R3 is connected to the connection terminal between the detecting resistor Rs and the heat generating device through the pin 5 (IN-), and the other end is connected to the negative phase input terminal of the operational amplifier U1A.
  • the output of the op amp is the output of the comparator unit.
  • the resistor R1 is connected in parallel at one end between the resistor R3 and the negative phase input of the operational amplifier U1A, and at the other end to the input of the operational amplifier.
  • the resistor R2 is connected in parallel at one end between the resistor R4 and the non-inverting input of the operational amplifier U1A, and at the other end to the reference voltage pin of the comparator unit, that is, the pin 1 shown in FIG.
  • the working principle of the solution according to the present disclosure is that inserting a low-resistance value, for example 0.01 ohm, of the temperature-sensing detecting resistor Rs in series in the current path forms a small voltage drop, which can be amplified to be regarded as A signal proportional to the current.
  • the comparison amplifier unit Am acquires the voltage drop across the temperature detecting resistor Rs through the gain resistors R3 and R4, and then inputs it to the operational amplifier U1A for amplification to correct an inherent error affecting the measurement accuracy, such as an input compensation voltage. This converts the potentially lower differential voltage to a higher output voltage.
  • the amplified voltage signal is then fed to the microcontroller.
  • V OUT (I LOAD x R SHUNT )GAIN+V REF
  • V out represents the voltage outputted by the output pin OUT (pin 6), which reflects the real-time current I LOAD of the heat generating device L flowing through the temperature detecting resistor Rs.
  • GAIN indicates that the gain of the comparison amplifier unit is, for example, 50 times the magnification.
  • V REF represents a small ground-to-ground voltage applied to the amplifier's reference pin, REF (Pin 1).
  • V2-V1 I LOAD x R SHUNT representing the voltage across the resistor Rs, from which the following equation can be derived:
  • V OUT (V2-V1) GAIN + V REF
  • thermo sensing resistors in the measurement process is that high precision measurements of temperature stability can be performed using precision components.
  • the measurement function of the precision comparator unit is optimized for connecting very small signals to meet the requirements of low value resistors and low power consumption.
  • the smoking article F When the smoking article F is inserted into the tobacco rod 100, or when the battery is supplied to the heat generating device by detecting a cigarette in the tobacco rod by a switch provided on the tobacco rod 100 or by detecting the inside of the tobacco rod through the internal detecting element, the battery current is passed through The turned-on switch Q1 flows to the heat generating device L through the temperature detecting resistor Rs.
  • the temperature detecting resistor Rs provides a voltage value to detect the resistance of the heat generating device.
  • the voltage signal provided by the temperature sensing resistor may be too small, so that the detection accuracy is insufficient. In this case, the signal needs to be amplified and then detected.
  • the aforementioned comparison amplifier unit Am is added between the temperature detecting resistor Rs and the microcontroller Cr.
  • the pins 4 and 5 of the comparison amplifier unit Am are connected to both sides of the temperature detecting resistor Rs to detect the voltage across it, that is, V2-V1 (step 100), and for the above reason, the signal A certain multiple is amplified by the comparator unit Am, for example by a factor of 50, and then fed back to the microcontroller Cr via a pin 6 connected to the microcontroller Cr (step 200).
  • the microcontroller After the microcontroller receives the feedback signal, then using real-time battery voltage directly measured in real time representative of the voltage across the heating device, heat generating device to calculate the resistance value R L of real solid software algorithm stored inside the microcontroller Cr And comparing the real-time resistance value with a preset heat-generating device resistance R preset stored in the microcontroller by the look-up table (step 300 shown in FIG. 6), wherein the preset heat-generating device resistance value R is preset Corresponding to the preset heating device temperature; based on the comparison result, the PWM controller of the microcontroller controls the switch Q1 connected between the battery Sb and the heat generating device L, here is the MOS tube (step 400 shown in FIG.
  • the PWM controller controls to provide additional power to the heating device to raise its temperature until the preset target temperature is reached;
  • the resistance value is higher than the preset resistance value, which means that the temperature of the heat generating device is higher than the preset target temperature, and the PWM controller controls to reduce or even stop supplying power to the heat generating device to lower the temperature to the preset target temperature.
  • a comparative amplifier unit capable of achieving the above functions in the field of a heated non-combustion smoking device can be selected.
  • the number of comparison amplifier units is also not limited to only one as in the foregoing examples, and more than one, for example, two such comparison amplifier units may be set according to actual needs.
  • the MOS transistor is disposed between the heat generating device L and the battery Sb, and can be turned on and off by the MOS tube to ensure that the battery supplies power to the heat generating device and disconnects the battery to supply power to the heat generating device.
  • the PWM controller of the microcontroller Cr is connected to the gate of the MOS transistor, that is, the gate G through the resistor R10, wherein the resistor R10 is provided to prevent the breakdown of the switch tube. A large current damages the PWM pin of the microcontroller.
  • the positive electrode of the battery is connected to the wire between the PWM controller of the microcontroller and the resistor R10 via a resistor R7, and to the source S, S2 of the switching MOS transistor.
  • a resistor R7 is provided to serve as a pull-up resistor for the switching MOS transistor to provide conditions for the MOS transistor to be turned on.
  • the pins D1-D5 of the MOS transistor are connected to each other as a drain.
  • the negative pole of the battery is connected to the wire between the resistor R10 and the gate G through the capacitor C4.
  • the capacitor C4 connected in parallel on the resistor R10 functions to improve the switching stability of the MOS transistor.
  • the MOS tube is maintained in an on-state, corresponding to the switch Q1 being in a closed position, which allows current to flow from the battery Sb through the temperature-sensing detecting resistor Rs to the heat-generating device L.
  • the comparison amplifier unit Am monitors the voltage across the resistor: the voltage V2-V1 at both ends is obtained by internally comparing the operation detection signals V2 and V1, and is amplified and fed to the micro-control.
  • the microcontroller is additionally connected to the battery that supplies power to the heating device L to directly measure its real-time voltage, thereby using its internal software algorithm to calculate the resistance of the starting thermal element and look up the table for comparison: according to the comparison result, controlled by the PWM controller
  • the magnitude of the gate G voltage can control the magnitude of the current of the drain D1-D5, thereby controlling the power supply to change the battery Sb to the heat generating device L. This control is achieved by PWM controlling the pulse width or duty cycle of the modulated signal so that the temperature of the heat generating device L can be maintained at a relatively constant temperature point by PWM adjustment.
  • the adjustment of the power supply of the heat generating device L by the battery Sb is realized by the combination of the PWM control and the MOS tube, so that the heat generating device L is maintained at a relatively constant temperature point.
  • this is only a non-limiting example.
  • any other simple switching device such as a transistor such as a transistor which can realize such a function can also be used.
  • the controller can implement any suitable control technique to adjust the temperature, such as a simple thermostatic feedback loop.
  • a microcontroller is used here as an example.
  • any device capable of providing a signal capable of controlling the heat-generating device can be connected with the comparison amplifier unit Am, which is also disposed between the battery Sb and the heat-generating device L, in parallel with the innovation according to the present disclosure.
  • the arrangement of the temperature detecting resistors Rs is used together.
  • the microcontroller Cr can also be configured to detect a short circuit of the heat generating device L so as to protect the main board of the heated non-burning smoking device when the heat generating device is short-circuited, thereby preventing the short circuit of the heat generating device from being damaged, including the microcontroller and, if necessary, Compare the motherboard of the amplifier unit.
  • the terminal 1 of the heat generating device L is connected to the ground via the resistor R6 in series with the resistor R15, and the tap conductor between the resistor R6 and the resistor R15 is connected to the heat generating device of the microcontroller via the resistor R14. Short circuit detection pin.
  • the resistors R6 and R15 are arranged to provide a voltage dividing signal for detecting the short circuit of the heating device L by the microcontroller Cr, and the resistor R14 is arranged to prevent the large current from damaging the detecting I/O port of the microcontroller Cr, that is, its input/output. port. If the short detection pin detects a low signal, it is judged that the heat generating device is short-circuited, for example, 0 volt is detected to indicate that it is short-circuited to ground; if a high signal is detected, it is judged that the heat-generating device is not short-circuited.
  • the accuracy may be, for example, 5%, the resistances of the resistors R6 and R15 are the same, and the resistance of the resistor R14 is not required to be uniform.
  • the comparison amplifier unit Am can also be configured to detect an accidental short circuit from the battery to the system, if necessary, thereby preventing damage to the motherboard, the switch.
  • the temperature detecting resistor Rs and the comparison amplifier unit Am are separate devices.
  • the temperature sensing resistor can be integrated inside the comparator unit. Its operation mode is similar to the foregoing, and will not be described here.
  • the parasitic resistance in series with the sense resistor may cause additional measurement errors, and the integrated method can avoid the influence of parasitic resistance and further improve the measurement accuracy.
  • the temperature of the heat generating device can be monitored for a predetermined period of time, such as every few milliseconds or every 100 milliseconds. This monitoring can be carried out continuously or when only the power of the heating device is supplied.
  • the microcontroller is for example programmable.
  • the preset target temperature value that is, the preset resistance value
  • the user can also set himself or set a plurality of values set in the smoking article as needed to precisely control the temperature of the heat generating device to a relatively constant level.
  • the present disclosure may include any feature or combination of features or a summary thereof that is implicitly or explicitly disclosed herein, and is not limited to any of the defined ranges set forth above. Any of the elements, features and/or structural arrangements described herein may be combined in any suitable manner.

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  • Control Of Resistance Heating (AREA)

Abstract

L'invention concerne un dispositif d'ensemble à fumer et un procédé de mesure et de régulation de température associé. Le dispositif d'ensemble à fumer comprend : un élément chauffant (L); une source d'énergie (Sb) reliée à l'élément chauffant (L) et utilisée de façon à fournir une énergie à l'élément chauffant (L); et une unité de régulation (50), utilisée pour relier l'élément chauffant (L) et la source d'énergie (Sb), et conçue de façon à réguler l'alimentation en énergie à partir de la source d'énergie (Sb) vers l'élément chauffant (L), de manière à régler la température de l'élément chauffant (L). L'unité de régulation (50) détermine la résistance en temps réel Ractual de l'élément chauffant (L) lorsqu'une énergie est alimentée vers ce dernier par la source d'énergie (Sb), au moyen d'une résistance de détection de mesure de température (Rs) reliée en série entre la source d'énergie (Sb) et l'élément chauffant (L), ce qui permet d'obtenir une surveillance en temps réel de la température de l'élément chauffant (L), de telle sorte que l'élément chauffant (L) peut maintenir une température cible prédéfinie constante, ce qui améliore ainsi la précision de détection de température de façon à améliorer la précision de régulation de température.
PCT/CN2018/082460 2018-04-10 2018-04-10 Dispositif d'ensemble à fumer et son procédé de mesure et de régulation de température Ceased WO2019196003A1 (fr)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110652043A (zh) * 2019-10-21 2020-01-07 东莞市美迪云电子科技有限公司 一种可调节功率的烟雾发生器以及调节控制方法
CN112075667A (zh) * 2020-10-09 2020-12-15 西安稳先半导体科技有限责任公司 一种电子烟、用于电子烟的烟弹和安全电路
CN114468383A (zh) * 2020-11-11 2022-05-13 湖南中烟工业有限责任公司 发热元件、低温烘焙烟具及其发热体拆装方法
CN116210985A (zh) * 2023-04-06 2023-06-06 浙江迈格恩华科技有限公司 雾化芯、雾化装置和雾化装置的控制方法
WO2025001529A1 (fr) * 2023-06-26 2025-01-02 湖北中烟工业有限责任公司 Dispositif de cigarette chauffant et procédé de régulation de température
EP4418930A4 (fr) * 2021-10-19 2025-08-27 Kt & G Corp Dispositif de génération d'aérosol

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015081554A1 (fr) * 2013-12-06 2015-06-11 吉瑞高新科技股份有限公司 Circuit de commande d'étui à cigarette, étui à cigarette électronique et son procédé de détection d'humidex
CN104720119A (zh) * 2015-02-06 2015-06-24 董金明 自动恒温电子烟及其控制方法
CN106455718A (zh) * 2014-06-14 2017-02-22 进化有限公司 具有温度感测和限值的电子汽化器
CN106858724A (zh) * 2017-03-22 2017-06-20 东莞市哈维电子科技有限公司 电子吸烟器的温度控制装置
WO2018050701A1 (fr) * 2016-09-14 2018-03-22 Philip Morris Products S.A. Système de génération d'aérosol et son procédé de commande

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015081554A1 (fr) * 2013-12-06 2015-06-11 吉瑞高新科技股份有限公司 Circuit de commande d'étui à cigarette, étui à cigarette électronique et son procédé de détection d'humidex
CN106455718A (zh) * 2014-06-14 2017-02-22 进化有限公司 具有温度感测和限值的电子汽化器
CN104720119A (zh) * 2015-02-06 2015-06-24 董金明 自动恒温电子烟及其控制方法
WO2018050701A1 (fr) * 2016-09-14 2018-03-22 Philip Morris Products S.A. Système de génération d'aérosol et son procédé de commande
CN106858724A (zh) * 2017-03-22 2017-06-20 东莞市哈维电子科技有限公司 电子吸烟器的温度控制装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110652043A (zh) * 2019-10-21 2020-01-07 东莞市美迪云电子科技有限公司 一种可调节功率的烟雾发生器以及调节控制方法
CN110652043B (zh) * 2019-10-21 2024-05-07 东莞市美迪格电子科技有限公司 一种可调节功率的烟雾发生器以及调节控制方法
CN112075667A (zh) * 2020-10-09 2020-12-15 西安稳先半导体科技有限责任公司 一种电子烟、用于电子烟的烟弹和安全电路
CN112075667B (zh) * 2020-10-09 2024-01-05 无锡市稳先微电子有限公司 一种电子烟、用于电子烟的烟弹和安全电路
CN114468383A (zh) * 2020-11-11 2022-05-13 湖南中烟工业有限责任公司 发热元件、低温烘焙烟具及其发热体拆装方法
EP4418930A4 (fr) * 2021-10-19 2025-08-27 Kt & G Corp Dispositif de génération d'aérosol
CN116210985A (zh) * 2023-04-06 2023-06-06 浙江迈格恩华科技有限公司 雾化芯、雾化装置和雾化装置的控制方法
WO2025001529A1 (fr) * 2023-06-26 2025-01-02 湖北中烟工业有限责任公司 Dispositif de cigarette chauffant et procédé de régulation de température

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