WO2016202028A1 - Procédé de régulation et circuit de régulation de la température d'atomisation d'une cigarette électronique, et noyau d'atomisation de cigarette électronique à température régulée - Google Patents

Procédé de régulation et circuit de régulation de la température d'atomisation d'une cigarette électronique, et noyau d'atomisation de cigarette électronique à température régulée Download PDF

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Publication number
WO2016202028A1
WO2016202028A1 PCT/CN2016/076838 CN2016076838W WO2016202028A1 WO 2016202028 A1 WO2016202028 A1 WO 2016202028A1 CN 2016076838 W CN2016076838 W CN 2016076838W WO 2016202028 A1 WO2016202028 A1 WO 2016202028A1
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Prior art keywords
temperature
heating
electronic
voltage
atomizing
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PCT/CN2016/076838
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English (en)
Chinese (zh)
Inventor
李建伟
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Shenzhen Innokin Technology Co Ltd
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Shenzhen Innokin Technology Co Ltd
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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
    • 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
    • A24F40/10—Devices using liquid inhalable precursors

Definitions

  • the invention relates to a heating control method in the field of daily life, in particular to a method for controlling the atomization heating temperature of an electronic cigarette and a heating temperature adjusting method.
  • the invention further relates to the above described electronic aerosolization temperature control circuit.
  • the invention also relates to a temperature controllable electronic aerosolizing core.
  • this product is a high-tech means to atomize liquids containing chemicals such as nicotine to produce smoke for the purpose of smoking. At the same time, it is also possible to help to quit smoking by using different chemicals. It not only benefits the physical and mental health of smokers, but also contributes to environmental protection and saves social resources. Therefore, this kind of product is very popular among the majority of "smokers" and has a lot of profit space in the market.
  • the atomization device of the electronic cigarette generally adopts a resistance wire to heat and heat, and uses the heat of the resistance wire to atomize the electronic cigarette liquid. Because a certain amount of the electronic cigarette liquid is atomized, it is required to generate an instantaneous high atomization temperature, such as general electrons. The atomization temperature of the liquid smoke is required to reach between 250 and 450 degrees Celsius. This requires the heating wire to work at a relatively high power in a short period of time.
  • the general electronic aerosolizing device is arranged by the electric current that has been adjusted and controlled to flow through the heating wire to generate heat. When the button is pressed during smoking, the power is turned on. When the battery is not sucked, the power can be temporarily turned off.
  • the power needs to be turned on every time the power is applied, and each time the power is turned on, heat is generated, which may eventually cause fog.
  • the temperature of the heating wire is too high.
  • the higher temperature is advantageous for the atomization effect, the negative effect is also very large. For example, if the temperature of the heating wire is too high, the temperature of the generated smoke will be too high, it will be hot, sometimes it will feel hot, and even burn the user; in addition, because the temperature of the atomizing heating wire is too high, it will cause it as an electronic cigarette.
  • the oil-conducting fiber rope of the liquid carrier is coked at a high temperature, and the oil guiding effect is lost, resulting in damage of the atomizing core; and the atomization temperature of the electronic cigarette liquid is too high when the atomizing temperature is too high, which may cause uncertainty, for example, pre-production Unexpected harmful substances, etc.
  • the present invention is directed to the above-mentioned prior art defects, inventing a miniaturized electronic aerosolization temperature control method, and simultaneously designing a temperature control circuit that can be used on an atomization core of an electronic cigarette product.
  • One of the objects of the present invention is to provide a temperature control method for an electronic aerosolizing device that can effectively and accurately control the atomization temperature of the electronic cigarette to overcome the deficiencies of the prior art.
  • Another object of the present invention is to provide an electronic aerosolization heating temperature control circuit to implement the above method.
  • a third object of the present invention is to provide a temperature-controllable electronic aerosolizing core that can be controlled by the above method.
  • the electronic aerosolization temperature adjustment control method of the present invention comprises the following steps:
  • Step 1 The small high stability, high sensitivity, high linear temperature measuring element is arranged near the heating body of the electronic cigarette atomizer to sense the temperature of the atomizer heating body;
  • Step 2 converting the temperature of the atomizer heating body of step 1 into a voltage drop parameter of the temperature measuring component
  • Step 3 Compare the voltage drop of step 2 with a preset reference voltage to generate a comparison value
  • Step 4 The comparison value obtained in step 3 is transmitted to the atomizer heating power control circuit.
  • the control circuit does not output the control signal, and the heating circuit continues to operate; when the comparison value is zero, Sending a control signal to reduce the heating power; when the comparison value is greater than zero, issuing a control signal to turn off the heating power;
  • Step 5 Control the atomization temperature by turning off the heating power or reducing the heating power.
  • the required control can be realized.
  • Thermal temperature adjustment such as 250 degrees Celsius, 280 degrees Celsius or 300 degrees Celsius.
  • the small high stability, high sensitivity, high linearity temperature measuring element described above is a PT100 platinum thermistor.
  • the step 1 further includes a temperature compensation test, and the temperature of the sensing point and the temperature of the atomizer heating body itself are subjected to actual measurement to give necessary numerical compensation. It is compensated to compensate for the temperature difference between the detection point temperature and the heating body itself.
  • the temperature parameter in the step 2 is converted into a voltage drop component of the temperature measuring component, and the constant current power source is used to supply the temperature measuring component, and the voltage drop across the thermistor is collected. Since the constant current source is used for power supply, when the resistance value of the temperature measuring element changes with temperature, the voltage drop across the two ends will change linearly, and the output voltage drop parameter can be used to indirectly indicate the temperature.
  • the step 3 further includes a process of setting a reference voltage in advance, and according to the actual measurement and calculation, obtaining a one-to-one correspondence relationship between the temperature of the atomizer heating body and the voltage drop parameter converted by the temperature measuring component, each voltage
  • the drop data is the reference voltage drop for the corresponding heating temperature.
  • the reference voltage value is calibrated by the actual measurement, and can directly correspond to the corresponding temperature.
  • the temperature can be used to display the temperature, and the temperature controlled by the heating body can be preset as a control parameter.
  • the comparison value in the step 4 is processed separately in three cases.
  • the comparison value is negative, it belongs to the normal heating range; when the comparison value is zero, it belongs to the reduced heating power range; when the comparison value is greater than zero, it belongs to the stop heating range.
  • the temperature measuring element has a linear relationship with temperature, the temperature parameter voltage drop value is less than the reference voltage value, indicating that the heating body has not reached the heating temperature, and heating needs to be continued, the power control circuit does not operate, and the power supply is continued to be heated;
  • the parameter voltage drop is equal to the reference voltage value, it indicates that the temperature to be controlled has been reached, and the heating power needs to be reduced.
  • the temperature parameter voltage drop value is greater than the reference voltage, it indicates that the set heating temperature has been exceeded, the heating should be stopped, and the power supply should be turned off.
  • the electronic aerosolization temperature control circuit of the invention comprises an atomization heating device, a temperature parameter acquisition conversion device, a reference voltage regulation output device, a voltage comparison device, a heating power control device and an electronic cigarette power source; and the atomization heating device passes the heating power
  • the control device is connected to the electronic cigarette power source;
  • the temperature parameter acquisition and conversion device is a temperature measuring component, and the temperature measuring component is disposed near the atomization heating device, and the temperature measuring component is connected to the constant current power source and the temperature measuring component set by the power supply device. Both ends serve as voltage drop output collection points, which are connected to a voltage comparison device;
  • the reference voltage regulation output device is connected to a power supply and voltage comparison device; and the voltage comparison device output is connected to the heating power control device.
  • the temperature measuring element described above is a temperature positive correlation PT100 thermistor.
  • the reference voltage regulating output device described above comprises a voltage regulator connected to a standard voltage source and outputting a series of reference voltages by adjusting a voltage source, the series of reference voltages corresponding to different voltages converted into series atomization temperatures The value is lowered to correspond to the different temperatures of the heater.
  • the heating method of the electronic aerosolization heating device described above is one of electric heating wire heating, electric laser heating, infrared heating, and electromagnetic heating.
  • the temperature parameter collecting and converting device is disposed near the heating body of the heating device, and the atomizing heating device is heated.
  • the thermistor of the body and temperature parameter acquisition and conversion device is connected to the main control circuit through a heat-resistant wire.
  • the reference voltage regulating output device described above is one of a chip logic memory output or a resistive voltage dividing output.
  • the voltage comparator described above is one of a chip-controlled logic memory comparison or a resistive voltage division comparison method.
  • the temperature-controllable electronic aerosolizing core of the invention comprises an electrode terminal board, an atomizing core shell, a heating wire and a temperature sampling sensor; the electrode terminal board is arranged at the bottom of the atomizing core shell, and the electrode wiring board is provided with several a terminal; the atomizing heating wire is disposed in the atomizing core casing; the temperature sampling sensor is disposed near the atomizing heating wire, and is insulated from the atomizing heating wire; the atomizing heating wire and the temperature sampling sensor are both Connect to the corresponding terminal block of the electrode terminal block by wires.
  • An electric heating wire insulation frame is disposed between the atomization core shell and the atomizing electric heating wire, and the atomizing heating wire is disposed on the heating wire insulation frame; the temperature sampling sensor is disposed on the atomizing electric heating wire insulation frame .
  • the temperature sampling sensor disposed on the heating wire insulation frame is disposed at a position setting temperature sampling sensor insulating frame, and the temperature sampling sensor is disposed on the insulating frame.
  • the atomizing heating wire described above may be various conductors or semiconductor heating wires, and the temperature sampling sensor is a PT100 platinum thermistor sensor.
  • the atomization heating wire insulation frame and the temperature sampling sensor insulation frame described above are all made of ceramic.
  • the heating temperature control circuit can be effectively miniaturized and conveniently mounted on the electronic cigarette atomizer, thereby effectively controlling the atomization temperature of the electronic cigarette, and at the same time, the atomization temperature can be made constant. Freely adjust and control within the range, not only can avoid the uncertainty caused by over-heating, such as hot mouth, coking and high-temperature atomization, but also can adapt to different atomizing temperature of electronic cigarette liquid to ensure the best fog. Effect.
  • FIG. 1 is a schematic flow chart of an electronic aerosolization temperature control method of the present invention
  • FIG. 2 is a schematic diagram of a temperature pre-setting process of the electronic aerosolization method of the present invention
  • FIG. 3 is a schematic diagram showing the principle of an electronic aerosolization temperature control method of the present invention.
  • FIG. 4 is a structural diagram of an electronic aerosolization temperature control circuit module of the present invention.
  • Figure 5 is a schematic view showing the structure of the electronic cigarette temperature-controllable atomizing core of the present invention
  • Figure 6 is a graph showing the relationship between temperature and voltage drop obtained by actual measurement.
  • the electronic aerosolization temperature control method of the present invention needs to be implemented by the following steps.
  • Step S1 setting a small high-linearity thermistor in the vicinity of the electronic aerosolization heating device to detect the temperature of the atomizer heating body.
  • the use of small, high-stability, high-sensitivity, high-linear temperature measuring elements is due to the fact that the atomizer itself is very small in volume and volume. Since the electronic cigarette itself is small in volume, it requires a high heating temperature, and it is also instantaneously heated, so the addition of the atomizer heating device is required. The thermal power is relatively large. Temperature-sensitive devices used to control the temperature of the heating device are also devices that require miniaturization and high linearity. For example, using a PT100 platinum thermistor device, the device can be made smaller, up to the millimeter level, and the linearity of the PT100 platinum thermistor.
  • the range is -200 - 650 degrees Celsius, fully able to control the heating temperature of the electronic cigarette atomizer.
  • the PT100 needs to be placed as close as possible to the heating body to more accurately and quickly sense the temperature of the heating body.
  • the ceramic insulating frame can be isolated between the electronic aerosolizing heating wire and the PT100, and the insulating frame is used in order to receive heat radiation well.
  • the PT100 can also be disposed in the inner space of the spiral of the atomizing heating wire, or even in the oil guiding rope disposed in the spiral of the atomizing heating wire, so that it is easier to make the sensed temperature close to heating. Body temperature.
  • the thermistor cannot be infinitely close to the heating body, since the thermistor operates in a linear range, the necessary temperature compensation can be performed by actual measurement after determining the same type of heating body, the same type of thermistor, and the mutual positional relationship. Achieve precise control.
  • Step S2 converting the atomizer heating body temperature parameter to a voltage drop parameter of the temperature measuring element.
  • the characteristic of the temperature measuring element is that the resistance value changes linearly with the change of temperature, thus
  • the temperature parameter detected by the temperature measuring element is generally expressed by the resistance parameter, but the measurement of the resistance parameter needs to be achieved by using the current. Therefore, the resistance is actually measured by measuring the current at a certain voltage or the voltage drop under a certain current condition. It is therefore necessary to convert the resistance parameter into a current or voltage parameter to be measured and represented.
  • the conversion of the temperature parameter in this step is to convert the resistance value of the temperature measuring element at a specific temperature into a voltage drop parameter, and use the voltage drop parameter to express the corresponding heating body temperature.
  • Step S3 comparing the voltage drop parameter with a preset reference voltage drop parameter to generate a comparison value.
  • the voltage drop value at both ends of the temperature measuring component is used as a comparison parameter, and compared with a preset voltage representing a certain temperature, by comparing the voltage drop parameter and the preset voltage, three different comparison results are generated. That is equal to, greater than or less than.
  • step 3 the step of setting the reference voltage value in advance is required.
  • the step of setting the voltage value is as shown in FIG. 2.
  • Step S01 A small temperature measuring element with a linear change in resistance within the atomization temperature range is used as the heat sensitive device.
  • the same or the same thermistor device is used for the actual measurement and verification at the preset temperature and voltage value, and the temperature compensation is completed at the same time.
  • This embodiment continues to use the same PT100 device as the heat-sensitive device, and its setting position is also the same as that of the atomizer itself.
  • Step S02 The thermistor is set at a specific position and a certain distance near the atomizer heating device.
  • This step further determines the position and distance between the temperature measuring element and the atomizing heating device, and must be consistent with the actual atomizer position and distance for reference value. In fact, it is equivalent to doing a blank test to calibrate the data.
  • Step S03 After the measured voltage drop parameter of different temperatures when a certain constant current source passes, the one-to-one correspondence relationship between the measured voltage drop parameter and the atomizer heating temperature is established.
  • the constant current source When the constant current source is turned on, the constant current source also ensures the consistency with the constant current source current in the actual electronic cigarette atomizer.
  • a data table By measuring the temperature of the atomizer heating body itself and the measured voltage drop across the temperature measuring element, a data table can be obtained, and the corresponding temperature and voltage value can be obtained under a certain current condition and a certain distance of a certain position. table.
  • Step S04 Calling a voltage drop parameter corresponding to a certain temperature as a reference voltage, and setting a temperature corresponding to the reference voltage to be a control heating temperature.
  • step S3 After the pre-setting process of the reference voltage described above, the reference voltage number is determined, and the voltage drop detected from the temperature measuring element near the atomizer can be compared, that is, step S3.
  • Step S4 The obtained comparison value is transmitted to the heating power control circuit, and the control circuit outputs a different signal according to the comparison value.
  • Step S5 The step is divided into three cases, which are respectively less than the result is negative, indicating that the heating temperature has not reached the set value, and the heating power control circuit works normally, and continues to heat up; The heating temperature has reached the set temperature, when the heating power is reduced; if the result is positive, it indicates that the set temperature has passed, and the control turns off the power of the heating device.
  • a temperature-adjustable electronic cigarette atomizer structure is designed.
  • the temperature-controlled electronic cigarette atomizer structure of the present invention is in a metal atomizer housing 8 having an inner diameter of 8 mm.
  • a heating wire ceramic insulating frame 7 is disposed, and a heating wire 4 is disposed on the ceramic insulating frame 7, and the heating wire 4 has a spiral structure for facilitating passage of the oil guiding fiber rope in the spiral.
  • the temperature measuring element 1 uses a PT100 platinum thermal resistance, and the product has a length, a width and a height of 6 mm, a width of 2 mm and a height of 0.6 mm, and can be applied to an 8 mm diameter atomizing core casing of an electronic cigarette atomizer.
  • the heating wire 4 and the temperature measuring element 1 are both disposed on the insulating frame 7, and the electrode terminal plate 12 of the atomizer is generally disposed at the bottom of the atomizing core casing 8, there is still a distance to reach the terminal block 11, so it is required
  • a heat-resistant, oil-resistant, and low-resistance wire pin is provided to facilitate connection with the terminal.
  • the pin wires used in the present embodiment are nickel wires 3 and 5, which satisfy the above requirements.
  • the oil guiding hole 9 and the vent hole 10 are also disposed on the atomizing core casing 8.
  • the above components can be assembled, assembled into a complete atomizing core, installed in the atomizer, and an additional standard temperature measuring mechanism is arranged in the heating wire.
  • the constant temperature power supply is turned on for the temperature measuring component, and the voltage drop data at both ends of the thermistor is read during the heating process, and the temperature measured by the standard temperature measuring mechanism is corresponding to the voltage drop across the temperature measuring component.
  • Data sheet see Table 1
  • the same structure can be set in the control circuit.
  • the heating temperature control data of the atomizer According to the data in the above table, if the standard curve is shown in Figure 6, the standard curve can guide the millivolts of the voltage drop corresponding to any temperature within a certain range. Further, the temperature of the heating is adjusted by the setting of the millivolt number.
  • the electronic aerosolization temperature control circuit of the present invention is disposed in the electronic cigarette controller, and is connected to the atomizer through a wire to achieve temperature control.
  • the atomizer itself is only provided with four lead terminals. The rest is implemented in the control circuit.
  • an electronic cigarette power supply circuit of the present invention is provided with an electronic cigarette power source, and the electronic cigarette power source generates three outputs, one of which is a constant current output, and is supplied to a PT100 thermistor device, and the thermistor device
  • the temperature parameter acquisition and conversion device is used; the other channel is used as the standard voltage output, and the corresponding reference voltage for setting the control temperature can be generated by the regulator; the third channel is used as the heating power source, and the atomizer heating device is supplied through the heating power control circuit.
  • the control circuit further includes a voltage comparator for comparing the voltage drop detected by the temperature measuring component with a standard reference voltage generated by the regulator.
  • a heating control module is provided, and the heating control module controls the heating power of the atomizing heating device according to the comparison structure between the measured voltage drop parameter and the standard reference voltage.
  • FIG. 4 is a block schematic diagram of the electronic aerosolization temperature control circuit of the present invention
  • the control circuit adopts STM32L as a single-chip processor chip, and completes heating and temperature control with necessary peripheral circuits, that is, completes the whole electronic Functional control of smoke.
  • the peripheral circuits of the microprocessor MCU include:
  • Input control circuit which is used for key input of electronic cigarette switch and heating temperature adjustment
  • the charging circuit and the battery voltage detecting circuit complete the voltage detection of the electronic cigarette battery and Charge and discharge control, when it is detected that the voltage is low, it prompts to enter the charging state, and then the charging power source can be charged, and the charging is stopped when the predetermined voltage is reached;
  • the MCU power supply circuit is connected to the electronic cigarette battery, and the electronic cigarette battery supplies power to the control circuit chip;
  • the buck-boost circuit is a heating power control circuit disposed between the power source and the load heater, and the heating power supply voltage, the supply current or the current waveform is controlled by the MCU to realize different heating powers and methods;
  • the temperature sensor is a PT100 thermistor disposed near the heating wire.
  • the so-called temperature detecting circuit is a circuit that converts the resistance value change of the temperature measuring element into a voltage drop parameter, that is, a detection point drawn from both ends of the temperature measuring element;
  • the load detection circuit is used to monitor the resistance change of the heating wire at any time in order to provide a more stable heating power.
  • the heating resistance wire also changes when the temperature changes, so it is also necessary to detect the load heating wire resistance at any time;
  • the circuit breaker protection circuit detects the heating state of the load heating wire at any time. When the short circuit is detected, it controls the power supply to be turned off, protects the device, and avoids accidents;
  • Both the OLED and the LED are output display circuits for displaying the operating state of the control circuit.
  • This circuit uses a micro-processing chip MCU with logic memory function. Therefore, the control method can be realized by writing the temperature and voltage values that have been actually measured as data tables into the chip memory and setting them through logic.
  • the resistor divider circuit can also be used to achieve the correspondence between the temperature and the data table. Because the voltage source is fixed, different output voltages can be adjusted to achieve different output voltages, thereby achieving comparison of the reference voltages.

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Abstract

L'invention concerne un procédé de régulation de la température d'atomisation d'une cigarette électronique, un circuit de régulation de la température d'atomisation d'une cigarette électronique, et un noyau d'atomisation de cigarette électronique, les étapes dudit procédé de régulation étant : disposer un composant de mesure de température de petite taille, à haute stabilité, haute sensibilité et haute linéarité à proximité d'un corps chauffant d'un atomiseur de cigarette électronique pour détecter la température du corps chauffant de l'atomiseur (S1) ; convertir la température du corps chauffant de l'atomiseur en un changement de la résistance du composant de mesure de température et ensuite convertir ledit changement en un paramètre de baisse de tension (S2) ; comparer le paramètre de baisse de tension à un paramètre de baisse de tension de référence prédéfini afin de générer une valeur de comparaison (S3) ; envoyer la valeur de comparaison obtenue au circuit de régulation de puissance de chauffage de l'atomiseur afin d'obtenir différents états de régulation.
PCT/CN2016/076838 2015-06-17 2016-03-21 Procédé de régulation et circuit de régulation de la température d'atomisation d'une cigarette électronique, et noyau d'atomisation de cigarette électronique à température régulée Ceased WO2016202028A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510338235.6 2015-06-17
CN201510338235.6A CN106307614A (zh) 2015-06-17 2015-06-17 电子烟雾化温度控制方法、控制电路及可控温电子烟雾化芯

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