WO2024124554A1 - Procédé et appareil de régulation de température pour un appareil de génération d'aérosol, et dispositif de génération d'aérosol - Google Patents

Procédé et appareil de régulation de température pour un appareil de génération d'aérosol, et dispositif de génération d'aérosol Download PDF

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WO2024124554A1
WO2024124554A1 PCT/CN2022/139698 CN2022139698W WO2024124554A1 WO 2024124554 A1 WO2024124554 A1 WO 2024124554A1 CN 2022139698 W CN2022139698 W CN 2022139698W WO 2024124554 A1 WO2024124554 A1 WO 2024124554A1
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temperature
heating element
current
aerosol generating
generating device
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PCT/CN2022/139698
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English (en)
Chinese (zh)
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禤美帆
肖锋
韩达
王龙江
李树文
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沃德韦国际控股有限公司
深圳沃德韦科技有限公司
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Priority to PCT/CN2022/139698 priority Critical patent/WO2024124554A1/fr
Publication of WO2024124554A1 publication Critical patent/WO2024124554A1/fr

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  • the present application relates to the technical field of aerosol generating devices, and in particular to a temperature control method, device, computer equipment, storage medium, computer program product and aerosol generating device for an aerosol generating device.
  • the core element is the heating element.
  • the aerosol forming device uses electromagnetic induction to heat the aerosol generating matrix. That is, the control power supply generates an alternating current, and an alternating magnetic field is generated through a coil.
  • the heating element is placed in it to cut the alternating magnetic field lines, thereby generating eddy currents inside.
  • the eddy currents cause the atoms inside the heating element to move irregularly at high speed, and the atoms collide and rub against each other to generate heat energy, thereby heating the aerosol generating matrix.
  • Measuring the temperature of the heating element and controlling the temperature is an important means to ensure the working performance of the heating element.
  • a wired temperature sensor is used to measure the temperature of the heating element, and the temperature is controlled based on the measured temperature.
  • this method cannot take advantage of the fact that the electromagnetic heating element does not require electrical connection, and a temperature sensor needs to be set in the aerosol forming device, which will increase the volume and weight of the aerosol forming device.
  • a temperature control method, device, computer equipment, storage medium, computer program product and aerosol generating device of an aerosol generating device are provided.
  • a temperature control method for an aerosol generating device wherein a heating element of the aerosol generating device is formed by mixing a first ferromagnetic material and a second ferromagnetic material having different Curie temperatures, the method comprising:
  • a target current corresponding to the temperature is obtained;
  • the standard correspondence relationship is a correspondence relationship between the temperature of the heating element and the current of the sensor of the aerosol generating device during the demagnetization process of the heating element;
  • the heating element is arranged in an alternating magnetic field generated by the sensor;
  • the inductor is controlled to operate at the target current.
  • a temperature control device for an aerosol generating device wherein the heating element of the aerosol generating device is a mixture of a first ferromagnetic material and a second ferromagnetic material having different Curie temperatures, and the device comprises:
  • a target temperature acquisition module used to acquire the target temperature of the heating element
  • a target current acquisition module for acquiring a target current corresponding to the temperature based on a standard correspondence relationship
  • the standard correspondence relationship is a correspondence relationship between the temperature of the heating element and the current of the sensor of the aerosol generating device during the demagnetization process of the heating element
  • the heating element is arranged in an alternating magnetic field generated by the sensor
  • the current control module is used to control the inductor to operate at the target current.
  • a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:
  • a target current corresponding to the temperature is obtained;
  • the standard correspondence relationship is a correspondence relationship between the temperature of the heating element and the current of the sensor of the aerosol generating device during the demagnetization process of the heating element;
  • the heating element is arranged in an alternating magnetic field generated by the sensor;
  • the inductor is controlled to operate at the target current.
  • a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the following steps:
  • a target current corresponding to the temperature is obtained;
  • the standard correspondence relationship is a correspondence relationship between the temperature of the heating element and the current of the sensor of the aerosol generating device during the demagnetization process of the heating element;
  • the heating element is arranged in an alternating magnetic field generated by the sensor;
  • the inductor is controlled to operate at the target current.
  • a computer program product comprising a computer program, wherein when the computer program is executed by a processor, the following steps are implemented:
  • a target current corresponding to the temperature is obtained;
  • the standard correspondence relationship is a correspondence relationship between the temperature of the heating element and the current of the sensor of the aerosol generating device during the demagnetization process of the heating element;
  • the heating element is arranged in an alternating magnetic field generated by the sensor;
  • the inductor is controlled to operate at the target current.
  • An aerosol generating device comprises an aerosol generating device and a control device, wherein the control device is connected to the aerosol generating device, the heating element of the aerosol generating device is a mixture of a first ferromagnetic material and a second ferromagnetic material having different Curie temperatures, and the control device is used to control the temperature of the aerosol generating device according to the above method.
  • FIG1 is a schematic flow chart of a temperature control method for an aerosol generating device according to an embodiment
  • FIG2 is a schematic diagram of a process for establishing a standard correspondence relationship in one embodiment
  • FIG3 is a schematic flow chart of a temperature control method for an aerosol generating device according to another embodiment
  • FIG4 is a schematic diagram of the structure of a class E amplifier in one embodiment
  • FIG5 is a schematic diagram of temperature and inductor current changes during demagnetization of a heating element in one embodiment
  • FIG6 is a schematic diagram of temperature control of a heating element in one embodiment
  • FIG7 is a block diagram of a temperature control device of an aerosol generating device in one embodiment
  • FIG8 is a schematic structural diagram of an aerosol generating device in one embodiment
  • FIG. 9 is a diagram showing the internal structure of a computer device in one embodiment.
  • the temperature control method of the aerosol generating device is used to control the temperature of the aerosol generating device, and is specifically used to control the temperature of the heating element in the aerosol generating device.
  • the method can be executed by a control device, and the control device can be arranged in the aerosol generating device, so as to timely control the temperature of the aerosol generating device.
  • the heating element of the aerosol generating device is composed of a mixture of a first ferromagnetic material and a second ferromagnetic material with different Curie temperatures. When the temperature rises to a certain temperature, the ferromagnetic material changes from a ferromagnetic state to a paramagnetic state, that is, it loses the characteristics of the ferromagnetic material. This temperature is called the Curie temperature.
  • the Curie temperature is one of the intrinsic parameters of the magnetic material, and it is only related to the chemical composition and crystal structure of the material.
  • the first ferromagnetic material and the second ferromagnetic material are both electromagnetic induction materials, generally metals.
  • the heating element is a mixture of the first ferromagnetic material and the second ferromagnetic material with different Curie temperatures, so the heating element is usually a uniform structure with uniform structure.
  • the heating element since the Curie temperatures of the first ferromagnetic material and the second ferromagnetic material are different, the heating element has a first Curie temperature and a second Curie temperature.
  • the first Curie temperature is the Curie temperature of the first ferromagnetic material
  • the second Curie temperature is the Curie temperature of the second ferromagnetic material
  • the first Curie temperature is less than the second Curie temperature.
  • the heating element begins to lose magnetism, and at the second Curie temperature, the heating element completely loses magnetism.
  • the first temperature corresponding to when it begins to lose magnetism and the second temperature corresponding to when it completely loses magnetism are fixed and are only related to the material of the heating element.
  • the corresponding Curie temperature is also different.
  • the first ferromagnetic material can be selected from at least one of stainless steel, carbon steel, iron or iron-based alloy, and the Curie temperature of the first ferromagnetic material is between 400-1000°C.
  • the second ferromagnetic material may be selected from at least one of nickel, nickel-based alloy or Invar alloy, and the Curie temperature of the second ferromagnetic material is between 200-400°C.
  • a temperature control method for an aerosol generating device is provided, which is described by taking the method executed by a control device as an example, and includes the following steps:
  • Step 102 obtaining the target temperature of the heating element.
  • the heating element is used to heat the aerosol-generating substrate, and the temperature of the heating element affects the quality and efficiency of the aerosol generated after heating the aerosol-generating substrate.
  • the aerosol-generating substrate is a substrate that can release volatile compounds that can form an aerosol. The volatile compounds are released by heating the aerosol-forming agent.
  • the aerosol-generating substrate can be solid or liquid, or include solid and liquid components.
  • Different aerosol generating substrates can correspond to different target temperatures.
  • the target temperature of the heating element can be preset and stored in the memory of the control device, or it can be stored in other devices. When used, according to the type of aerosol generating substrate, the corresponding target can be directly called, which is conducive to improving the quality of the generated aerosol.
  • the target temperature of the heating element can also be set by the user. Different users have different usage habits, and different target temperatures of the heating element can be set according to their own needs. Thus, the heating element operates according to the target temperature, which can better meet user needs.
  • Step 104 acquiring a target current corresponding to the temperature based on the standard corresponding relationship.
  • the heating element is arranged in the alternating magnetic field generated by the inductor.
  • the inductor is generally a coil. After the inductor receives the alternating current from the power supply, it generates an alternating magnetic field.
  • the heating element is arranged in the alternating magnetic field generated by the inductor, cutting the alternating magnetic lines of force, thereby generating eddy currents inside.
  • the eddy currents cause the atoms inside the heating element to move irregularly at high speed, and the atoms collide and rub against each other to generate heat energy, thereby playing the role of heating the aerosol generation matrix.
  • the inductor may be a coil in a converter, and the converter may be a class E amplifier, a half-bridge or full-bridge topology, etc.
  • the converter as a class E amplifier as an example, the class E amplifier includes a switch tube Q1, an LCR series resonant circuit, a parallel capacitor C1 and a choke coil L1, and its resistance R is the sum of the coil resistance and the resistance of the heating element converted to the primary side, and the choke coil L1 serves as an inductor.
  • the standard correspondence is the correspondence between the temperature of the heating element and the current of the sensor of the aerosol generating device during the demagnetization process of the heating element.
  • the sensor and the heating element can be equivalent to a transformer model, the sensor is equivalent to the primary side of the transformer, and the heating element is equivalent to the secondary side of the transformer.
  • the voltage, current, and resistance on the secondary side can be converted into the voltage, current, and resistance on the primary side. Therefore, when the heating element is demagnetized, the temperature of the heating element changes, which will affect the change of the current flowing into the sensor.
  • the change of the current flowing into the sensor can characterize the demagnetization process. Based on this, a standard correspondence can be obtained.
  • the standard correspondence can be obtained through detection and data analysis before or when the aerosol generating device leaves the factory, and then stored in the aerosol generating device. It can be directly called when the aerosol generating device is used later.
  • the temperature change of the electronic components may cause the electrical parameters to change, affecting the accuracy of the standard correspondence.
  • the temperature of the heating element and the current of the sensor can be detected and analyzed by heating up or cooling down again, and the standard correspondence can be corrected.
  • the standard correspondence includes the correspondence between the temperature of the heating element and the current of the sensor. Therefore, after obtaining the target temperature of the heating element, the target current corresponding to the target temperature can be matched according to the standard correspondence.
  • Step 106 controlling the inductor to operate at a target current.
  • the inductor After obtaining the target current, the inductor is controlled to operate at the target current.
  • the control device is not limited to controlling the current of the inductor.
  • the control device can control the current flowing into the inductor by controlling the conduction time between the inductor and the power source, that is, controlling the operating current of the inductor.
  • the heating element is a mixture of a first ferromagnetic material and a second ferromagnetic material having different Curie temperatures.
  • the heating element is placed in an alternating magnetic field generated by an inductor.
  • the target temperature of the heating element is obtained.
  • the target current corresponding to the temperature is obtained, and then the inductor is controlled to operate at the target current.
  • this method does not require the addition of a temperature sensor, which is conducive to improving the ease of use of the aerosol generating device.
  • the process of establishing the standard correspondence relationship includes steps 202 to 208 .
  • Step 202 heating the heating element.
  • the inductor can be energized to generate an alternating magnetic field, and the alternating magnetic field acts on the heating element, thereby achieving the purpose of heating the heating element.
  • Step 204 obtaining the temperature of the heating element and the current of the sensor during the heating process.
  • the control device will continuously or at time intervals obtain the temperature of the heating element and the current of the sensor.
  • the current of the heating element can be detected by the current detection device, and the current detection device sends the detected current value to the control device.
  • the temperature of the heating element can be detected by the temperature detection device, and the detected temperature value can be sent to the control device.
  • Step 206 obtaining a first inflection point current and a second inflection point current according to the current of the inductor.
  • the first inflection point current is less than the second inflection point current.
  • the heating element is formed by mixing a first ferromagnetic material and a second ferromagnetic material having different Curie temperatures, taking the Curie temperature of the first ferromagnetic material as the first Curie temperature, the Curie temperature of the second ferromagnetic material as the second Curie temperature, and the first Curie temperature being less than the second Curie temperature as an example, before the temperature of the heating element reaches the first Curie temperature, the first ferromagnetic material and the second ferromagnetic material are not demagnetized, and at this time the current of the inductor does not change substantially, or decreases slightly as the temperature of the heating element increases.
  • the first ferromagnetic material After the temperature of the heating element reaches the first Curie temperature, the first ferromagnetic material begins to lose magnetism, which causes the total magnetic resistance of the heating element to decrease, so the current of the inductor will gradually increase, and at this time there will be a minimum current inflection point (I1), and this minimum current inflection point is taken as the first inflection point current.
  • the heating element continues to heat up.
  • the first ferromagnetic material at the low Curie temperature in the heating element continues to lose magnetism, causing the heating efficiency of the first ferromagnetic material to drop sharply.
  • the magnetic resistance of the second ferromagnetic material at the high Curie temperature will also increase with the increase in temperature.
  • both the first ferromagnetic material and the second ferromagnetic material lose magnetism, and the current of the sensor no longer changes with the increase in the temperature of the heating element.
  • the superposition of the magnetic resistance of the low Curie temperature material and the high Curie temperature material with temperature changes will cause the current inflection point (I2) to appear.
  • the current inflection point I2 at this time is used as the second inflection point current.
  • Step 208 establishing a standard corresponding relationship based on the current between the first inflection point current and the second inflection point current, and the temperature of the corresponding heating element.
  • the heating element is in the stage from the beginning of demagnetization to complete demagnetization.
  • this stage there is a one-to-one correspondence between the current of the inductor and the temperature of the heating element, and a standard correspondence can be established through this one-to-one correspondence.
  • the standard correspondence is an S-shaped curve corresponding to the temperature of the heating element and the current of the inductor.
  • the aerosol generating device may not be in normal use. For example, before the aerosol generating device leaves the factory or is used, the temperature of the heating element and the current of the sensor may be collected. Therefore, when obtaining the standard correspondence, if the temperature detection device and the current detection device of the hardware are needed, the temperature detection device and the current detection device may be removed after obtaining the standard correspondence, thereby reducing the volume and mass of the aerosol generating device and improving the convenience of using the aerosol generating device.
  • the process of establishing the standard correspondence relationship further includes step 210 .
  • Step 210 If the temperature of the heating element is greater than the temperature corresponding to the second inflection point current, stop heating the heating element.
  • the standard correspondence is established based on the data obtained during the heating process of the heating element. During the heating process, the temperature of the heating element continues to rise. When the temperature corresponding to the second inflection point current is reached, even if the temperature of the heating element rises further, the current of the sensor will not change.
  • the temperature corresponding to the second inflection point current is generally the higher Curie temperature point of the heating element. According to the current between the first inflection point current and the second inflection point current, and the corresponding temperature of the heating element, a standard correspondence can be established. Therefore, after the temperature of the heating element is greater than the temperature corresponding to the second inflection point current, the obtained temperature and current data of the sensor are not used to establish a standard correspondence. At this time, the heating of the heating element can be stopped to cool the heating element.
  • steps 202 to 208 can be repeated multiple times, or steps 202 to 210 can be repeated multiple times, and the first inflection point current, the second inflection point current, and the temperature of the heating element and the corresponding current of the sensor during the heating process can be collected multiple times.
  • a standard corresponding relationship is established based on the multiple sets of data collected, which can improve the accuracy of the standard corresponding relationship.
  • the Curie temperature point of the first ferromagnetic material is the first Curie temperature point
  • the Curie temperature point of the second ferromagnetic material is the second Curie temperature point
  • the first Curie temperature point is less than the second Curie temperature point.
  • the apparent current is the current of the sensor.
  • the apparent current detected by the control device has a one-to-one correspondence with the temperature of the heating element. Through this one-to-one correspondence, a standard curve can be established as a standard corresponding relationship, so that wireless temperature control can be achieved.
  • the first ferromagnetic material with a low Curie temperature point in the heating element continues to lose magnetism, resulting in a sharp decrease in the heating efficiency of the first ferromagnetic material, and at the same time, the magnetic resistance of the second ferromagnetic material with a high Curie temperature point will also increase with the increase in temperature.
  • the superposition of the temperature-dependent magnetic resistance characteristics of low Curie temperature point materials and high Curie temperature point materials will lead to the appearance of a current inflection point (I2), and the current inflection point I2 at this time is used as the second inflection point current.
  • the first inflection point current (I1) and the second inflection point current (I2) are characteristic properties of the heating element.
  • the heating temperature As the current continues to increase, electromagnetic induction heating is dominated by the second ferromagnetic material with a high Curie temperature point. As the heating temperature continues to increase, the current will become smaller due to the increase in magnetic resistance of the high Curie temperature point material. It can be understood that in the later stage of heating, the high Curie temperature point material is heated in the form of a porous skeleton (the low Curie temperature point material and the high Curie temperature point material are evenly mixed, and after the low Curie temperature point material is completely demagnetized, only the high Curie temperature point material can be heated. The low Curie temperature point material is removed, and it can be equivalent to a porous "high Curie temperature point material" skeleton). The heating efficiency will drop sharply, resulting in the inability of the current to continue to increase significantly, and the temperature also corresponds to a maximum temperature, that is, the maximum threshold temperature, to achieve temperature control.
  • step 106 includes step 306 .
  • Step 306 Send a control signal to the switch connected to the sensor according to the target current, so that the sensor operates at the target current.
  • the switch tube is used to control the on and off of the circuit between the sensor and the power supply, and the control signal is used to control the on and off time of the switch tube.
  • the control end of the switch tube is connected to the control device and receives a control signal from the control device.
  • the first end of the switch tube is connected to the inductor, and the second end of the switch tube is connected to the power supply.
  • the control device can control the on and off time of the switch tube by sending a control signal to the switch tube.
  • the control signal can be a PWM signal.
  • the control device can control the on and off time of the switch tube by adjusting the duty cycle of the PWM signal, thereby controlling the power-on time of the inductor, thereby controlling the current of the inductor and making the inductor work at the target current.
  • the sensor by sending a control signal to the switch tube connected to the sensor, the sensor is made to operate at the target current, and the temperature of the heating element can be made to correspond to the target current, thereby realizing wireless control of the temperature of the heating element without increasing hardware costs.
  • the heating element is sintered by the first ferromagnetic material and the second ferromagnetic material.
  • the heating element is a composite heating element obtained by mixing the first ferromagnetic material and the second ferromagnetic material and sintering them.
  • the prepared heating element can be a single-layer metal sheet, or a tubular, needle, pin, mesh, wire, particle or cup structure. It can be understood that in other embodiments, the heating element can also be prepared in other ways, as long as the first ferromagnetic material and the second ferromagnetic material can be mixed.
  • the types of the first ferromagnetic material and the second ferromagnetic material are not unique.
  • the first ferromagnetic material can be selected from at least one of stainless steel, carbon steel, iron or iron-based alloy, and the Curie temperature of the first ferromagnetic material is between 400-1000° C.
  • the second ferromagnetic material can be selected from at least one of nickel, nickel-based alloy or Invar alloy, and the Curie temperature of the second ferromagnetic material is between 200-400° C.
  • the aerosol generating device converts direct current into alternating current through a class E power amplifier topology, but other converter topologies can also be used for conversion, such as half-bridge, full-bridge, etc.
  • the class E amplifier includes a MOSFET switch tube, an LCR series resonant circuit, a parallel capacitor C1 and a choke coil L1. Its resistance R is the sum of the coil resistance and the resistance of the heating element converted to the initial measurement, and the choke coil L1 serves as an inductor.
  • the heating element of the aerosol generating device is a single-layer metal sheet sintered by two ferromagnetic materials with different Curie temperatures.
  • the magnetism of ferromagnetic materials changes with temperature. When the temperature rises to a certain temperature, the ferromagnetic material changes from a ferromagnetic state to a paramagnetic state, that is, it loses the characteristics of ferromagnetic materials. This temperature is called the Curie temperature.
  • the Curie temperature is one of the intrinsic parameters of magnetic materials, which is only related to the chemical composition and crystal structure of the material.
  • the temperature control method of the aerosol generating device controls the working temperature of the heating element according to the temperature demagnetization characteristics.
  • the temperature control logic of the heating element is:
  • the heating element In the initial stage of heating, the heating element is heated, and the control device detects an initial apparent current. As the temperature of the heating element increases, the magnetic resistance of the heating element increases, and the control device detects that the apparent current decreases accordingly. When the temperature of the heating element continues to rise, and the temperature rises to a point close to the Curie temperature of the low Curie temperature point material in the heating element, the low Curie temperature point material begins to gradually lose magnetism, which causes the total magnetic resistance of the heating element to decrease. Therefore, the control device detects that the apparent current will gradually increase, and a minimum current inflection point (I1) will appear at this time. In the next heating process, the apparent current detected by the control device has a one-to-one correspondence with the temperature of the heating element.
  • the high Curie temperature material is heated in the form of a porous skeleton (the low Curie temperature material and the high Curie temperature material are evenly mixed, and after the low Curie temperature material is completely demagnetized, only the high Curie temperature material can be heated. After removing the low Curie temperature material, it can be equivalent to a porous "high Curie temperature material" skeleton). Its heating efficiency will drop sharply, resulting in the inability of the current to continue to increase significantly, and the temperature also corresponds to a maximum temperature, that is, the maximum threshold temperature, to achieve temperature control.
  • the characteristics of the process of the heating element losing its ferromagnetism as the temperature changes can be measured by the current I flowing into L1. Please refer to Figure 5.
  • the change in current represents the process of demagnetization, which includes:
  • T0 is lower than T1 (can be considered as room temperature).
  • T1 can be considered as room temperature.
  • the current I basically does not change or slightly decreases as the temperature rises.
  • the current at this inflection point is recorded as I1.
  • the temperature of T1 is generally between 150°C and 300°C.
  • the current I1 is generally 2-8A.
  • the heating element completely loses its magnetism and the current stops rising. At this time, the current is I2. It can be seen that between the temperature range of T1 and T2, the current presents an S-shaped curve. This is the entire demagnetization process of the heating element.
  • the temperature of T2 is generally between 200°C and 400°C, but it will be higher than T1.
  • the current I1 is generally 3-12A, but it will be higher than I1.
  • the temperature points T1 and T2 are fixed and only related to the material of the heating element.
  • the currents I1 and I2 are related to the size of the heating element, the position of the heating element in the magnetic field, and the parameters such as RLC in the circuit, it is obvious that in the S curve, each temperature point has only one corresponding current. Therefore, we can correspond the temperature based on the current of the S curve, and the temperature range of the temperature measurement is T1 ⁇ T ⁇ T2.
  • the process of establishing a standard correspondence includes:
  • Step 1 The temperature rises from the time the power is turned on. Before reaching T1, the current does not change. The current at this time is I1.
  • Step 2 Continue to heat up. When the temperature exceeds T2, it is detected that the current no longer changes. At this time, the current is I2;
  • Step 3 Stop heating and let the induction heating plate cool down.
  • Steps 1, 2, and 3 can be repeated multiple times to collect I1 and I2 multiple times to ensure the collection accuracy. Based on the collected I1, I2, T1, T2 and the corresponding relationship between the temperature and current between I1 and I2, a standard corresponding relationship can be established, which can be reflected by the S1 curve in the figure.
  • the current Iset corresponding to the required temperature Tset can be calculated according to the S curve.
  • the duty cycle of the PWM signal the current is kept at Iset, thereby ensuring that the temperature is kept at Tset, achieving the purpose of temperature control of the heating element.
  • the temperature change of the electronic components causes the RLC resonance parameters to change, and the currents I1 and I2 also change accordingly.
  • the current inflection point I2 can be corrected by raising the temperature again, or the current inflection point I1 can be corrected by lowering the temperature.
  • precise temperature control can be achieved.
  • steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.
  • the embodiment of the present application also provides a temperature control device for an aerosol generating device for implementing the temperature control method of the aerosol generating device involved above.
  • the implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific definition of the temperature control device embodiment of one or more aerosol generating devices provided below can refer to the definition of the temperature control method of the aerosol generating device above, and will not be repeated here.
  • a temperature control device for an aerosol generating device is provided.
  • the heating element of the aerosol generating device is a mixture of a first ferromagnetic material and a second ferromagnetic material having different Curie temperatures.
  • the temperature control device for the aerosol generating device includes: a target temperature acquisition module 710, a target current acquisition module 720 and a current control module 730, wherein:
  • the target temperature acquisition module 710 is used to acquire the target temperature of the heating element.
  • the target current acquisition module 720 is used to acquire the target current corresponding to the temperature based on the standard correspondence relationship.
  • the standard correspondence relationship is the correspondence between the temperature of the heating element and the current of the sensor of the aerosol generating device during the demagnetization process of the heating element, and the heating element is set in the alternating magnetic field generated by the sensor.
  • the current control module 730 is used to control the inductor to operate at a target current.
  • the temperature control device of the aerosol generating device also includes a model building module, which is used to heat the heating element, obtain the temperature of the heating element and the current of the sensor during the heating process, and obtain a first inflection point current and a second inflection point current according to the current of the sensor; the first inflection point current is less than the second inflection point current, and a standard corresponding relationship is established based on the current between the first inflection point current and the second inflection point current, and the corresponding temperature of the heating element.
  • a model building module which is used to heat the heating element, obtain the temperature of the heating element and the current of the sensor during the heating process, and obtain a first inflection point current and a second inflection point current according to the current of the sensor; the first inflection point current is less than the second inflection point current, and a standard corresponding relationship is established based on the current between the first inflection point current and the second inflection point current, and the corresponding temperature of the heating element.
  • the model building module after the model building module obtains the first inflection point current and the second inflection point current according to the current of the sensor, if the temperature of the heating element is greater than the temperature corresponding to the second inflection point current, the model building module stops heating the heating element.
  • the current control module is used to send a control signal to a switch tube connected to the sensor according to the target current, so that the sensor operates at the target current; the switch tube is used to control the on and off of the circuit between the sensor and the power supply, and the control signal is used to control the on and off time of the switch tube.
  • Each module in the temperature control device of the aerosol generating device can be implemented in whole or in part by software, hardware, or a combination thereof.
  • Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.
  • an aerosol generating device including an aerosol generating device and a control device, the control device is connected to the aerosol generating device, the heating element of the aerosol generating device is a mixture of a first ferromagnetic material and a second ferromagnetic material with different Curie temperatures, and the control device is used to control the temperature of the aerosol generating device according to the above method.
  • the control device is used to control the temperature of the aerosol generating device according to the above method.
  • the Curie temperature is one of the intrinsic parameters of the magnetic material, which is only related to the chemical composition and crystal structure of the material.
  • the first ferromagnetic material and the second ferromagnetic material are both electromagnetic induction materials, generally metals.
  • the heating element When the heating element is mixed with the first ferromagnetic material and the second ferromagnetic material with different Curie temperatures, the heating element has a first Curie temperature and a second Curie temperature due to the different Curie temperatures of the first ferromagnetic material and the second ferromagnetic material.
  • the first Curie temperature is the Curie temperature of the first ferromagnetic material
  • the second Curie temperature is the Curie temperature of the second ferromagnetic material
  • the first Curie temperature is less than the second Curie temperature.
  • the heating element begins to lose magnetism, and at the second Curie temperature, the heating element completely loses magnetism.
  • the first temperature corresponding to when it begins to lose magnetism and the second temperature corresponding to when it completely loses magnetism are fixed and are only related to the material of the heating element.
  • the corresponding Curie temperature is also different.
  • the first ferromagnetic material can be selected from at least one of stainless steel, carbon steel, iron or iron-based alloy, and the Curie temperature of the first ferromagnetic material is between 400-1000°C.
  • the second ferromagnetic material may be selected from at least one of nickel, nickel-based alloy or Invar alloy, and the Curie temperature of the second ferromagnetic material is between 200-400°C.
  • the control device first obtains the target temperature of the heating element, and then obtains the target current corresponding to the temperature based on the standard correspondence between the temperature of the heating element and the current of the sensor of the aerosol generating device during the demagnetization process of the heating element, and then controls the sensor to work at the target current.
  • the heating element can be operated at the target temperature, and the temperature of the heating element can be accurately controlled.
  • this method does not require the addition of a temperature sensor, which is conducive to improving the convenience of using the aerosol generating device.
  • the aerosol generating device includes a power source, a substrate container, a sensor and a heating element, wherein the substrate container is used to store the aerosol generating substrate, the power source is connected to the sensor, the heating element is arranged in the alternating magnetic field generated by the sensor, and the sensor is connected to the control device.
  • the connection relationship of each component is not shown in the figure.
  • the power supply is connected to the inductor. After the inductor is powered on, the inductor starts to work and generates an alternating magnetic field.
  • the heating element is arranged in the alternating magnetic field generated by the inductor, cuts the magnetic lines of force, and the temperature gradually increases. After the temperature of the heating element increases, the aerosol generating matrix stored in the matrix container is heated, so that the aerosol generating matrix generates an aerosol for subsequent use.
  • the inductor is connected to the control device, and can adjust its own working current under the control of the control device to achieve the purpose of temperature control of the heating element.
  • the heating element is a mixture of a first ferromagnetic material and a second ferromagnetic material with different Curie temperatures.
  • the heating element is set in the alternating magnetic field generated by the sensor.
  • the target temperature of the heating element is obtained, and then based on the standard correspondence between the temperature of the heating element and the current of the sensor of the aerosol generating device during the demagnetization process of the heating element, the target current corresponding to the temperature is obtained, and then the sensor is controlled to work at the target current. Therefore, by controlling the current of the sensor, the heating element can be operated at the target temperature, and the temperature of the heating element can be accurately controlled.
  • this method does not require the addition of a temperature sensor, which is conducive to improving the convenience of using the aerosol generating device.
  • a computer device which may be a terminal, and its internal structure diagram may be shown in FIG9.
  • the computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected via a system bus.
  • the processor of the computer device is used to provide computing and control capabilities.
  • the memory of the computer device includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system and a computer program.
  • the internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium.
  • the communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner may be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies.
  • a temperature control method for an aerosol generating device is implemented.
  • the display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen
  • the input device of the computer device may be a touch layer covered on the display screen, or a key, a trackball or a touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.
  • FIG. 9 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied.
  • the specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.
  • a computer device including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.
  • a computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.
  • a computer program product including a computer program, which implements the steps in the above method embodiments when executed by a processor.
  • Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory.
  • Volatile memory can include random access memory (RAM) or external cache memory.
  • RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

Landscapes

  • General Induction Heating (AREA)

Abstract

L'invention concerne un procédé et un appareil de régulation de température pour un appareil de génération d'aérosol, un dispositif informatique, un support d'enregistrement, un produit-programme informatique et un dispositif de génération d'aérosol. Un corps chauffant de l'appareil de génération d'aérosol est formé par mélange d'un premier matériau ferromagnétique et d'un second matériau ferromagnétique ayant différents points de température de Curie. Le procédé de régulation de température destiné à un appareil de génération d'aérosol consiste à : acquérir une température cible d'un corps chauffant (S102) ; sur la base d'une correspondance standard, acquérir un courant cible correspondant à la température (S104) ; et commander un inducteur de sorte à le faire fonctionner au courant cible (S106), la correspondance standard étant une correspondance entre la température du corps chauffant et le courant de l'inducteur de l'appareil de génération d'aérosol dans le processus de démagnétisation du corps chauffant, et le corps chauffant étant disposé dans un champ magnétique alternatif généré par l'inducteur.
PCT/CN2022/139698 2022-12-16 2022-12-16 Procédé et appareil de régulation de température pour un appareil de génération d'aérosol, et dispositif de génération d'aérosol WO2024124554A1 (fr)

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PCT/CN2022/139698 WO2024124554A1 (fr) 2022-12-16 2022-12-16 Procédé et appareil de régulation de température pour un appareil de génération d'aérosol, et dispositif de génération d'aérosol

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991011082A1 (fr) * 1990-01-16 1991-07-25 Metcal, Inc. Systeme de production de chaleur dans des champs magnetiques alternatifs
US5126521A (en) * 1988-09-09 1992-06-30 Metcal, Inc. System for producing heat in alternating magnetic fields
US20150060437A1 (en) * 2013-08-29 2015-03-05 Airbus Sas Active Temperature Control for Induction Heating
CN113925223A (zh) * 2021-09-06 2022-01-14 深圳麦时科技有限公司 气溶胶生成装置及其控制方法
US20220030946A1 (en) * 2018-09-25 2022-02-03 Philip Morris Products S.A. Inductive heating assembly for inductive heating of an aerosol-forming substrate
CN114027565A (zh) * 2021-12-02 2022-02-11 湖北中烟工业有限责任公司 一种磁性发热体的温度控制方法、装置及电子设备
WO2022077316A1 (fr) * 2020-10-15 2022-04-21 深圳麦克韦尔科技有限公司 Dispositif de génération d'aérosol, procédé de génération d'aérosol, circuit de commande et support de stockage
CN115191670A (zh) * 2022-08-19 2022-10-18 深圳麦克韦尔科技有限公司 一种复合感应加热感受器及其制备方法和应用

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5126521A (en) * 1988-09-09 1992-06-30 Metcal, Inc. System for producing heat in alternating magnetic fields
WO1991011082A1 (fr) * 1990-01-16 1991-07-25 Metcal, Inc. Systeme de production de chaleur dans des champs magnetiques alternatifs
US20150060437A1 (en) * 2013-08-29 2015-03-05 Airbus Sas Active Temperature Control for Induction Heating
US20220030946A1 (en) * 2018-09-25 2022-02-03 Philip Morris Products S.A. Inductive heating assembly for inductive heating of an aerosol-forming substrate
WO2022077316A1 (fr) * 2020-10-15 2022-04-21 深圳麦克韦尔科技有限公司 Dispositif de génération d'aérosol, procédé de génération d'aérosol, circuit de commande et support de stockage
CN113925223A (zh) * 2021-09-06 2022-01-14 深圳麦时科技有限公司 气溶胶生成装置及其控制方法
CN114027565A (zh) * 2021-12-02 2022-02-11 湖北中烟工业有限责任公司 一种磁性发热体的温度控制方法、装置及电子设备
CN115191670A (zh) * 2022-08-19 2022-10-18 深圳麦克韦尔科技有限公司 一种复合感应加热感受器及其制备方法和应用

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