Aerosol-generating system, control method, and program

Abstract

[Problem] To provide a mechanism capable of further improving the quality of user experience. [Solution] An aerosol-generating system is provided with: a power supply unit; a plurality of transformers for converting and outputting a voltage applied from the power supply unit; a heating unit that heats an aerosol source contained in the substrate using power supplied from one of the plurality of transformers; and a control unit that selects, on the basis of a predetermined parameter, one of the plurality of transformers that applies a voltage to the heating unit.

Description

Technical Field

[0001] The present disclosure relates to an aerosol generating system, a control method, and a program. Background Art

[0002] Suction devices such as electronic cigarettes and nebulizers that generate substances to be sucked in by users are widely used. For example, the suction device uses a base material including an aerosol source for generating aerosol and a fragrance source for imparting fragrance components to the generated aerosol to generate an aerosol endowed with fragrance components. The user can taste the fragrance by sucking the aerosol endowed with fragrance components generated by the suction device. Hereinafter, the fragrance tasted by the user is also referred to as tasting. In addition, hereinafter, the action of the user sucking in the aerosol is also referred to as puffing or the action of sucking.

[0003] Many technologies related to the process of heating a substrate have been developed so far. For example, Patent Document 1 below discloses a technology for determining a duty ratio in PWM (Pulse Width Modulation) control based on information of a battery at the start of heating.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent No. 6930689 Summary of the invention

[0007] Problems to be solved by the invention

[0008] However, the technology disclosed in Patent Document 1 has only been developed a short time ago, and there is still room for improvement from various viewpoints.

[0009] Therefore, the present disclosure is made in view of the above-mentioned problems, and an object of the present disclosure is to provide a mechanism that can further improve the quality of user experience.

[0010] Means for solving problems

[0011] In order to solve the above-mentioned problems, according to a certain aspect of the present invention, an aerosol generating system is provided, comprising: a power supply unit; a plurality of transformers for converting and outputting a voltage applied from the power supply unit; a heating unit for heating an aerosol source contained in a substrate using power supplied from one of the plurality of transformers; and a control unit for selecting one of the plurality of transformers for applying a voltage to the heating unit based on specified parameters.

[0012] The predetermined parameter may be acquired at the timing when the heating unit starts heating.

[0013] The predetermined parameter may be a value corresponding to the temperature of the heating unit.

[0014] The output voltage of each of the plurality of transformers may be different, and the control unit may select the transformer having the lower output voltage as the transformer applying voltage to the heating unit as the temperature of the heating unit indicated by the predetermined parameter is higher.

[0015] The predetermined parameter may be a value corresponding to the elapsed time since the last heating by the heating unit was finished.

[0016] The output voltage of each of the plurality of transformers may be different, and the control unit may select the transformer having the lower output voltage as the transformer that applies voltage to the heating unit as the elapsed time represented by the predetermined parameter is shorter.

[0017] Alternatively, when the elapsed time represented by the prescribed parameter is greater than a prescribed threshold value, the control unit selects the transformer with the highest output voltage among the multiple transformers as the transformer for applying voltage to the heating unit, starts counting the elapsed time when the heating of the heating unit is completed, and stops counting the elapsed time when the elapsed time reaches the prescribed threshold value.

[0018] The aerosol generating system may further include a notification unit configured to notify a user of information, wherein the control unit controls the notification unit to notify the user of information corresponding to the transformer selected as one of the transformers for applying a voltage to the heating unit.

[0019] The control unit may perform output control such that, as the temperature of the heating unit increases, a voltage applied to the heating unit per unit time increases.

[0020] As the output control, the control unit may increase the time during which the power supply to the heating unit is turned on per unit time as the temperature of the heating unit increases.

[0021] The control unit may reduce a voltage applied to the heating unit per unit time during the output control based on the predetermined parameter.

[0022] The control unit may perform the output control while the temperature of the heating unit continues to rise after the start of heating.

[0023] The aerosol generating system may further include the substrate.

[0024] In addition, in order to solve the above-mentioned problems, according to another aspect of the present invention, a control method is provided, which is a control method executed by a computer controlling a suction device, wherein the suction device comprises: a power supply unit; a plurality of transformers, which transform and output the voltage applied from the power supply unit; and a heating unit, which heats the aerosol source contained in the substrate using the power supplied from one of the plurality of transformers, the control method comprising: based on specified parameters, selecting one of the plurality of transformers to apply voltage to the heating unit.

[0025] In addition, in order to solve the above-mentioned problems, according to another aspect of the present invention, there is provided a program, which is a program executed by a computer controlling a suction device, wherein the suction device comprises: a power supply unit; a plurality of transformers, which transform and output the voltage applied from the power supply unit; and a heating unit, which heats the aerosol source contained in the substrate using the power supplied from one of the plurality of transformers, wherein the program causes the computer to execute: based on specified parameters, selecting one of the plurality of transformers to apply voltage to the heating unit.

[0026] Effects of the Invention

[0027] As described above, according to the present disclosure, a mechanism is provided that can further improve the quality of user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram schematically showing a structural example of a suction device.

[0029] Figure 2 This is a graph showing an example of the transition of the temperature of the heating unit 121 when the temperature control is performed based on the heating curve shown in Table 1.

[0030] Figure 3 This is a block diagram for explaining output control according to the present embodiment.

[0031] Figure 4 This is a diagram for explaining an example of notification by the notification unit according to the present embodiment.

[0032] Figure 5 This is a flowchart showing an example of the flow of processing executed by the suction device according to the present embodiment.

[0033] Figure 6 It is a graph for explaining the output control according to the second modification. DETAILED DESCRIPTION

[0034] Below, while referring to the attached Figure 1In addition, in this specification and drawings, the same reference numerals are given to components having substantially the same functional structure, and repeated description is omitted.

[0035] <1. Example of structure>

[0036] The suction device is a device that generates a substance to be sucked in by the user. In the following, the substance generated by the suction device is assumed to be an aerosol. In addition, the substance generated by the suction device may also be a gas.

[0037] Figure 1 Schematic diagram schematically showing a structural example of a suction device. Figure 1 As shown, the suction device 100 involved in this structural example includes a power supply unit 111, a sensor unit 112, a notification unit 113, a storage unit 114, a communication unit 115, a control unit 116, a heating unit 121, a storage unit 140, and a heat insulation unit 144.

[0038] The power supply unit 111 stores electric power. The power supply unit 111 supplies electric power to each component of the suction device 100 based on the control of the control unit 116. The power supply unit 111 can be composed of a rechargeable battery such as a lithium ion secondary battery, for example.

[0039] The sensor unit 112 obtains various information related to the suction device 100. As an example, the sensor unit 112 is composed of a pressure sensor such as a condenser microphone, a flow sensor, or a temperature sensor, and obtains a value accompanying the user's suction. As another example, the sensor unit 112 is composed of an input device such as a button or a switch that receives input of information from the user.

[0040] The notification unit 113 notifies the user of information and is configured by, for example, a light emitting device that emits light, a display device that displays an image, a sound output device that outputs sound, or a vibration device that vibrates.

[0041] The storage unit 114 stores various information used for the operation of the suction device 100. The storage unit 114 is composed of a non-volatile storage medium such as a flash memory, for example.

[0042] The communication unit 115 is a communication interface capable of performing communication in accordance with any wired or wireless communication standard. As the communication standard involved, for example, a standard using Wi-Fi (registered trademark), Bluetooth (registered trademark), BLE (Bluetooth Low Energy (registered trademark)), NFC (Near Field Communication), or LPWA (Low Power Wide Area) can be adopted.

[0043] The control unit 116 functions as a calculation processing device and a control device, and controls the entire operation in the suction device 100 according to various programs. The control unit 116 is implemented by an electronic circuit such as a CPU (Central Processing Unit) or a microprocessor, for example.

[0044] The storage section 140 has an internal space 141, and holds the rod-shaped substrate 150 while storing a part of the rod-shaped substrate 150 in the internal space 141. The storage section 140 has an opening 142 that communicates the internal space 141 with the outside, and stores the rod-shaped substrate 150 inserted into the internal space 141 from the opening 142. For example, the storage section 140 is a cylindrical body with the opening 142 and the bottom 143 as the bottom surface, and defines the columnar internal space 141. The storage section 140 is connected to an air flow path that supplies air to the internal space 141. An air inlet hole that is an inlet of air to the air flow path is, for example, arranged on the side of the suction device 100. An air outlet hole that is an outlet of air from the air flow path to the internal space 141 is, for example, arranged on the bottom 143.

[0045] The rod-shaped substrate 150 includes a substrate portion 151 and a mouthpiece 152. The substrate portion 151 includes an aerosol source. The aerosol source includes flavor components from tobacco or non-tobacco. In the case where the suction device 100 is a medical inhaler such as a nebulizer, the aerosol source may also include a medicament. The aerosol source may be, for example, a liquid such as polyols such as glycerin and propylene glycol, and water, which include flavor components from tobacco or non-tobacco, or a solid including flavor components from tobacco or non-tobacco. In a state where the rod-shaped substrate 150 is held by the storage portion 140, at least a portion of the substrate portion 151 is stored in the internal space 141, and at least a portion of the mouthpiece 152 protrudes from the opening 142. Moreover, if the user holds the mouthpiece 152 protruding from the opening 142 and sucks, the air flows into the internal space 141 via an air flow path not shown, and reaches the user's mouth together with the aerosol generated from the substrate portion 151.

[0046] The heating unit 121 generates aerosol by heating the aerosol source to atomize the aerosol source. Figure 1 In the example shown, the heating portion 121 is configured in a film shape and is arranged to cover the outer periphery of the storage portion 140. Furthermore, when the heating portion 121 radiates heat, the base portion 151 of the rod-shaped base 150 is heated from the outer periphery to generate aerosol. The heating portion 121 radiates heat when power is supplied from the power supply portion 111. As an example, power may be supplied when the sensor portion 112 detects that the user starts sucking and / or inputs prescribed information. Furthermore, power supply is stopped when the sensor portion 112 detects that the user ends sucking and / or inputs prescribed information.

[0047] The heat insulating part 144 prevents heat transfer from the heating part 121 to other components. For example, the heat insulating part 144 is composed of a vacuum insulation material, an aerogel insulation material, or the like.

[0048] The above is a description of a configuration example of the suction device 100. Of course, the configuration of the suction device 100 is not limited to the above, and various configurations as exemplified below may be adopted.

[0049] As an example, the heating portion 121 may be configured in a blade shape and may be configured to protrude from the bottom 143 of the storage portion 140 to the internal space 141. In this case, the blade-shaped heating portion 121 is inserted into the base portion 151 of the rod-shaped base 150 to heat the base portion 151 of the rod-shaped base 150 from the inside. As another example, the heating portion 121 may be configured to cover the bottom 143 of the storage portion 140. In addition, the heating portion 121 may be configured as a combination of two or more of a first heating portion covering the outer periphery of the storage portion 140, a blade-shaped second heating portion, and a third heating portion covering the bottom 143 of the storage portion 140.

[0050] As another example, the storage section 140 may include an opening and closing mechanism such as a hinge for opening and closing a portion of the outer shell forming the internal space 141. Furthermore, the storage section 140 may be configured to store the rod-shaped substrate 150 inserted into the internal space 141 while clamping it by opening and closing the outer shell. In this case, the heating section 121 may be provided at the clamping portion of the storage section 140 to heat the rod-shaped substrate 150 while pressing it.

[0051] In addition, the means for atomizing the aerosol source is not limited to the heating of the heating unit 121. For example, the means for atomizing the aerosol source may also be induction heating. In this case, the suction device 100 has at least an electromagnetic induction source such as a coil for generating a magnetic field instead of the heating unit 121. The susceptor that releases heat by induction heating may be provided on the suction device 100 or included in the rod-shaped substrate 150.

[0052] In addition, the suction device 100 generates aerosol to be inhaled by the user by cooperating with the rod-type substrate 150. Therefore, the combination of the suction device 100 and the rod-type substrate 150 can also be understood as an aerosol generating system.

[0053] <2. Technical features>

[0054] (1) Heating curve

[0055] The control unit 116 controls the operation of the heating unit 121 based on the heating curve. The operation of the heating unit 121 is controlled by controlling the power supply from the power supply unit 111 to the heating unit 121. The heating unit 121 heats the rod-shaped substrate 150 (more specifically, the aerosol source contained in the rod-shaped substrate 150) using the power supplied from the power supply unit 111.

[0056] The so-called heating curve is control information for controlling the temperature of the heating aerosol source. The heating curve may be control information for controlling the temperature of the heating section 121. As an example, the heating curve may include a target value (hereinafter also referred to as the target temperature) for the temperature of the heating aerosol source. The target temperature may also change according to the elapsed time from the start of heating. In this case, the heating curve includes information for specifying the time series transition of the target temperature. As another example, the heating curve may include parameters for specifying the supply method of power to the heating section 121 (hereinafter also referred to as power supply parameters). The power supply parameters include, for example, the voltage applied to the heating section 121, the ON / OFF of the power supply to the heating section 121, or the feedback control method to be adopted. The ON / OFF of the power supply to the heating section 121 can also be understood as the ON / OFF of the heating section 121.

[0057] The control unit 116 controls the operation of the heating unit 121 so that the temperature of the heating unit 121 (hereinafter, also referred to as the actual temperature) changes in the same manner as the target temperature specified in the heating curve. Typically, the heating curve is designed so that when the user inhales the aerosol generated from the rod-shaped substrate 150, the flavor that the user enjoys is optimal. Thus, by controlling the operation of the heating unit 121 based on the heating curve, the flavor that the user enjoys can be optimized.

[0058] The temperature control of the heating unit 121 can be achieved, for example, by a well-known feedback control. The feedback control can be, for example, a PID control (Proportional-Integral-Differential Controller). The control unit 116 can supply power from the power supply unit 111 to the heating unit 121 in the form of pulses based on pulse width modulation (PWM) or pulse frequency modulation (PFM). In this case, in the feedback control, the control unit 116 can control the temperature of the heating unit 121 by adjusting the duty cycle of the power pulse. Alternatively, the control unit 116 can also perform a simple on / off control in the feedback control. For example, the control unit 116 can also perform heating based on the heating unit 121 until the actual temperature reaches the target temperature. When the actual temperature reaches the target temperature, the heating based on the heating unit 121 is interrupted. If the actual temperature becomes lower than the target temperature, the heating based on the heating unit 121 is started again.

[0059] As an example, the temperature of the heating section 121 can be quantified by measuring or estimating the resistance (more accurately, the electrical resistance) of the heating section 121 (more accurately, the resistance heat radiator constituting the heating section 121). This is because the resistance of the resistance heat radiator changes with temperature. The resistance of the resistance heat radiator can be estimated, for example, by measuring the voltage drop across the resistance heat radiator. The voltage drop across the resistance heat radiator can be measured by a voltage sensor that measures the potential difference applied to the resistance heat radiator. In addition, the temperature of the heating section 121 can also be measured by a thermistor disposed near the heating section 121. A thermistor is a resistor whose resistance changes with temperature.

[0060] Hereinafter, the period from the start to the end of the process of generating aerosol using the rod-type substrate 150 will also be referred to as a heating session. In other words, the so-called heating session is a period in which the action of the heating unit 121 is controlled based on the heating curve. The initial stage of the heating session is the timing of the start of heating based on the heating curve. The end of the heating session is the timing when a sufficient amount of aerosol is no longer generated. The heating session includes a preparatory heating period and a puffable period following the preparatory heating period. The so-called puffable period is a period in which a sufficient amount of aerosol is assumed to be generated. The so-called preparatory heating period is the period from the start of heating until the start of the puffable period. The heating performed during the preparatory heating period may also be referred to as preparatory heating.

[0061] An example of the heating curve is shown in Table 1 below.

[0062] [Table 1]

[0063] Table 1. Example of heating curve

[0064]

[0065] As shown in Table 1, the heating curve can be divided into a plurality of periods, and the time series transition of the target temperature and the time series transition of the power supply parameter are specified in each period. In the example shown in Table 1, the heating curve is divided into a total of 8 periods from stage 0 to stage 7. In each stage, the time series transition of the target temperature and the time series transition of the power supply parameter are specified. The stage specified in the heating curve is an example of a unit period in this embodiment.

[0066] In each stage, there is a case where time control is implemented. The so-called time control is a control that ends the stage by using the passage of a specified time (i.e., the duration set in each stage) as a trigger. In addition, when time control is implemented, the speed of change of the temperature of the heating unit 121 can be controlled so that the temperature of the heating unit 121 reaches the target temperature at the end of the duration. In addition, when time control is implemented, the temperature of the heating unit 121 can be controlled so that the temperature of the heating unit 121 reaches the target temperature in the middle of the duration, and then the temperature of the heating unit 121 is maintained at the target temperature until the duration passes. In the example shown in Table 1 above, time control is implemented in stages 1, and 4 to 7. Hereinafter, the period in which time control is implemented is also referred to as a fixed time period.

[0067] In each stage, there is a case where time control is not implemented. In the case where time control is not implemented, the stage ends when the temperature of the heating unit 121 reaches a predetermined temperature (i.e., the target temperature set in each stage) as a trigger. Therefore, the duration of the stage where time control is not implemented is expanded or contracted according to the temperature change rate. In the example shown in Table 1 above, time control is not implemented in stages 0, 2, and 3. Hereinafter, the period where time control is not implemented is also referred to as a time variable period.

[0068] When the control unit 116 performs temperature control according to the heating curve shown in Table 1, the temperature change of the heating unit 121 is referred to. Figure 2 While explaining. Figure 2 20 is a graph showing an example of the change in the temperature of the heating unit 121 when the temperature is controlled based on the heating curve shown in Table 1. The horizontal axis of the graph 20 is time (seconds). The vertical axis of the graph 20 is the temperature of the heating unit 121. Line 21 shows the change in the temperature of the heating unit 121. Figure 2 As shown in FIG. 1 , the temperature of the heating unit 121 changes in the same manner as the change in the target temperature specified in the heating curve. Figure 2 , while explaining an example of a heating curve.

[0069] As shown in Table 1 and Figure 2 As shown, in stage 0, the temperature of the heating unit 121 rises from the initial temperature to 300°C. The initial temperature is the temperature of the heating unit 121 when the heating starts. In stage 0, time control is not implemented. Therefore, in stage 0, the temperature of the heating unit 121 reaching 300°C is used as a trigger to end. Figure 2 In the example shown, stage 0 ends in 20 seconds. Thereafter, in stage 1, the temperature of the heating unit 121 is maintained at 300° C. At the end of stage 1, the preheating period ends, and at the start of stage 2, the inhalable period begins.

[0070] For the user, it is preferred that the preheating period is short. However, when the rod-shaped substrate 150 is not sufficiently heated, the water inside the rod-shaped substrate 150 may not evaporate completely and remain. If the user takes a puff in this state, there is a concern that the hot water vapor will be delivered to the user's mouth. Therefore, it is preferred that a certain length of the preheating period be ensured. As an example, it is preferred that the temperature of the heating unit 121 be rapidly increased to 300°C in stage 0, and that the duration of stage 1 be ensured to some extent.

[0071] As shown in Table 1 and Figure 2 As shown, in stage 2, the temperature of the heating unit 121 drops to 220°C. In stage 2, time control is not implemented. Therefore, in stage 2, the temperature of the heating unit 121 reaching 220°C is used as a trigger to end. Figure 2 In the example shown, stage 2 ends in 10 seconds. In stage 2, the power supply to the heating unit 121 is turned off. Therefore, the temperature of the heating unit 121 can be reduced at the fastest speed. In this way, by reducing the temperature of the heating unit 121 in the middle of the heating period, the rapid consumption of the aerosol source can be prevented. As a result, the depletion of the aerosol source in the middle of the heating period can be prevented.

[0072] As shown in Table 1 and Figure 2 As shown, in stage 3, the temperature of the heating unit 121 rises to 230°C. In stage 3, time control is not implemented. Therefore, stage 3 ends when the temperature of the heating unit 121 reaches 230°C. Figure 2 In the example shown, stage 3 ends in 5 seconds. In this way, by providing a period in which the temperature of the heating unit 121 is lowered and then raised again, it is possible to prevent the heating unit 121 from being excessively cooled.

[0073] As shown in Table 1 and Figure 2 As shown, in stages 4 to 6, the temperature of the heating unit 121 is gradually increased to 260° C. In this way, by gradually increasing the temperature of the heating unit 121, the power consumption of the entire heating period can be suppressed while maintaining the amount of aerosol generated.

[0074] As shown in Table 1 and Figure 2 As shown, in stage 7, the temperature of the heating unit 121 decreases. In stage 7, the power supply to the heating unit 121 is turned off. In stage 7, the duration is specified, but the target temperature is not specified. Therefore, stage 7 ends with the end of the duration as a trigger. In stage 7, a sufficient amount of aerosol can be generated by the residual heat of the rod-type substrate 150. Therefore, in this example, the inhalable period, that is, the heating period, ends together with the end of stage 7.

[0075] The notification unit 113 may also notify the user of information indicating the timing of the end of the preheating. For example, the notification unit 113 notifies the user of information for predicting the end of the preheating before the end of the preheating, or notifies the user of information indicating the end of the preheating at the timing of the end of the preheating. The notification to the user may be performed, for example, by lighting up an LED (light-emitting diode) or vibrating. The user can take a puff immediately after the end of the preheating with reference to the notification.

[0076] Similarly, the notification unit 113 may also notify the user of information indicating the timing of the end of the inhalable period. For example, the notification unit 113 notifies the user of information for predicting the end of the inhalable period before the end of the inhalable period, or notifies the user of information indicating the end of the inhalable period at the timing of the end of the inhalable period. The notification to the user can be performed, for example, by lighting up an LED or vibrating. The user can take a puff until the inhalable period ends, referring to the notification.

[0077] The heating curve described above is only an example, and various other examples are conceivable. As an example, the number of stages, the duration of each stage, and the target temperature may be changed as appropriate.

[0078] (2) Countermeasures against chain-smoke

[0079] There is a case where the user replaces a plurality of rod-shaped substrates 150 to the suction device 100 at short intervals while continuously heating and taking puffs. Such a usage is also called continuous smoking. In the case of continuous smoking, since heating is started at short intervals after the last heating is finished, the temperature of the heating unit 121 is already high when heating starts. Therefore, if no countermeasures are implemented, the preheating period, more precisely, the time variable period in the preheating period (for example, Table 1 and Table 2) is not enough. Figure 2 If the preheating period is extremely short, the smokeable period starts before the water in the rod-shaped substrate 150 has evaporated sufficiently. In particular, there is a concern that the taste may become rough immediately after the smokeable period starts.

[0080] Therefore, in the suction device 100 according to the present embodiment, a countermeasure is implemented to prevent the preheating period from becoming extremely short when continuous smoking is performed. Figure 3 The countermeasure is explained in detail.

[0081] Figure 3 FIG. 1 is a block diagram for explaining output control according to the present embodiment. Figure 3, an example of a circuit connecting the power supply unit 111 and the heating unit 121 is illustrated in detail. Figure 3 As shown, the suction device 100 includes a first switching element 161 , a second switching element 162 , and a plurality of DC (direct current) / DC converters 163 ( 163A to 163C) between the power supply unit 111 and the heating unit 121 .

[0082] exist Figure 3 In the example shown, the maximum output of the power supply unit 111 is 26W.

[0083] The first switch element 161 is a device for switching the power supply to the heating unit 121 on / off. As the first switch element 161, a MOSFET (metal-oxide-semiconductor field-effect transistor), an IGBT (insulated gate bipolar transistor), or a bipolar transistor can be used. Turning on the power supply to the heating unit 121 is also referred to as turning on the first switch element 161. In addition, turning off the power supply to the heating unit 121 is also referred to as turning off the first switch element 161. As an example, the control unit 116 can also use the first switch element 161 to perform PWM control related to the power supply to the heating unit 121. That is, the control unit 116 can also control the duty cycle by controlling the length of time that the first switch element 161 is turned on. As another example, the control unit 116 can also use the first switch element 161 to perform PFM control related to the power supply to the heating unit 121. That is, the control unit 116 may control the duty ratio by controlling the frequency at which the first switching element 161 is turned on.

[0084] The DC / DC converter 163 is a transformer that converts a DC voltage into a DC voltage. Figure 3 As shown, the DC / DC converter 163 is arranged between the power supply unit 111 and the heating unit 121. And, the DC / DC converter 163 converts the voltage applied from the power supply unit 111 and applies it to the heating unit 121. The voltage input to the DC / DC converter 163 is also called the input voltage, and the voltage output from the DC / DC converter 163 is also called the output voltage. Typically, the input voltage and the output voltage are different, but they can also be the same. The output voltage of the DC / DC converter 163 is applied to the heating unit 121. Here, the output voltage of each of the DC / DC converters 163A~163C is different. In Figure 3In the example shown, the output voltage of the DC / DC converter 163A is 8V. The output voltage of the DC / DC converter 163B is 7V. The output voltage of the DC / DC converter 163C is 6V.

[0085] The second switch element 162 is used to switch one of the multiple DC / DC converters 163 that applies a voltage to the heating unit 121. That is, the voltage output from one of the DC / DC converters 163A to 163C that is connected to the power supply unit 111 and the heating unit 121 through the second switch element 162 is applied to the heating unit 121. As the second switch element 162, a MOSFET (metal-oxide-semiconductor field-effect transistor), an IGBT (insulated gate bipolar transistor), or a bipolar transistor can be used. The second switch element 162 performs a switching operation so that the voltage output from the DC / DC converter 163A is applied to the heating unit 121, which is also called turning on the DC / DC converter 163A. The same is true for DC / DC converters 163B and 163C.

[0086] The heating unit 121 uses the power supplied from one DC / DC converter 163 among the DC / DC converters 163A to 163C to heat the aerosol source contained in the rod-shaped substrate 150. In detail, the heating unit 121 uses the power supplied from the DC / DC converter 163 turned on by the second switching element 162 to heat the rod-shaped substrate 150.

[0087] The control unit 116 selects one DC / DC converter 163 from among the DC / DC converters 163A to 163C to apply a voltage to the heating unit 121 based on the specified parameters. That is, the control unit 116 selects the DC / DC converter 163 to be turned on based on the specified parameters. The control unit 116 may also turn on the selected DC / DC converter 163 throughout the entire heating period. According to this structure, an appropriate voltage can be applied to the heating unit 121 according to the specified parameters to heat the rod-type substrate 150. As a result, the quality of user experience can be further improved.

[0088] The prescribed parameter is a value corresponding to the temperature of the heating section 121. Specifically, the prescribed parameter may be either the resistance of the heating section 121 or the temperature of the heating section 121 estimated based on the resistance of the heating section 121. The temperature of the heating section 121 varies greatly depending on whether continuous smoking is performed and the degree of continuous smoking. In this regard, according to this structure, an appropriate voltage corresponding to whether continuous smoking is performed and the degree of continuous smoking can be applied to the heating section 121 to heat the rod-type substrate 150. As a result, the quality of user experience can be further improved. In addition, a heavy degree of continuous smoking, that is, continuous smoking at extremely short intervals, is hereinafter referred to as heavy continuous smoking. On the other hand, a light degree of continuous smoking, that is, continuous smoking that cannot be called heavy, is hereinafter referred to as light continuous smoking.

[0089] The prescribed parameter is acquired at the timing when the heating section 121 starts heating. That is, the prescribed parameter is a value corresponding to the temperature of the heating section 121 when heating starts. The resistance of the heating section 121 when heating starts can be measured by experimentally applying a voltage to the heating section 121. The temperature of the heating section 121 when heating starts can also be detected by a thermistor. A low temperature of the heating section 121 when heating starts means that no continuous smoking has been performed. A high temperature of the heating section 121 when heating starts means that continuous smoking has been performed. Furthermore, an extremely high temperature of the heating section 121 when heating starts means that heavy continuous smoking has been performed. In this regard, according to this structure, the heating method of the rod-shaped substrate 150 can be changed according to whether continuous smoking has been performed and the degree of continuous smoking. As a result, the quality of user experience can be further improved.

[0090] The higher the temperature of the heating unit 121 indicated by the predetermined parameter, the higher the DC / DC converter 163 with the lower output voltage is turned on by the control unit 116. Specifically, the higher the temperature of the heating unit 121 at the start of heating, the lower the output voltage is turned on by the control unit 116. For example, when the temperature of the heating unit 121 at the start of heating is less than 100°C, the control unit 116 may determine that there is no continuous smoking and turn on the DC / DC converter 163A with an output voltage of 8V. In addition, for example, when the temperature of the heating unit 121 at the start of heating is 100°C or more and less than 200°C, the control unit 116 may determine that light continuous smoking is performed and turn on the DC / DC converter 163B with an output voltage of 7V. In addition, for example, when the temperature of the heating unit 121 at the start of heating is 200°C or more, the control unit 116 may determine that heavy continuous smoking is performed and turn on the DC / DC converter 163C with an output voltage of 6V. According to this structure, a low voltage can be applied to the heating unit 121 in the case of light continuous puffing, or a further low voltage can be applied to the heating unit 121 in the case of heavy continuous puffing, thereby preventing the preheating period from becoming extremely short. As a result, the inhalable period can be started in a state where the water in the rod-shaped substrate 150 is fully evaporated. In this way, the taste can be improved even in the case of continuous puffing.

[0091] The control unit 116 may also control the notification unit 113 to notify information corresponding to the DC / DC converter 163 being turned on. Specifically, the control unit 116 may control the notification unit 113 to notify different information when the DC / DC converter 163A is turned on, when the DC / DC converter 163B is turned on, and when the DC / DC converter 163C is turned on. According to this structure, it is possible to notify the user whether or not continuous smoking is being performed, and the degree of continuous smoking. Furthermore, it is possible to remind the user that he or she is smoking too much. While referring to Figure 4 An example of notification by the notification unit 113 will be described.

[0092] Figure 4 1 is a diagram for explaining an example of notification by the notification unit 113 according to the present embodiment. Figure 4 As shown, the suction device 100 includes LEDs 113A to 113C as the notification unit 113. For example, the control unit 116 may also turn on the DC / DC converter 163A, as shown in FIG. Figure 4On the other hand, the control unit 116 may light up the LEDs 113A and 113B when the DC / DC converter 163B is turned on. In addition, the control unit 116 may light up the LEDs 113A to 113C when the DC / DC converter 163C is turned on.

[0093] In addition, in addition to using Figure 4 In addition to notifying information by the number of LED lights shown, various notification methods are also conceivable. For example, information corresponding to the DC / DC converter 163 being turned on may be notified by the LED lighting / off, blinking speed, or light color. In addition, information corresponding to the DC / DC converter 163 being turned on may be notified by vibration, display, sound, etc. together with or instead of light emission.

[0094] (3) Processing process

[0095] Figure 5 This is a flowchart showing an example of the flow of processing executed by the suction device 100 according to the present embodiment.

[0096] like Figure 5 As shown, first, the suction device 100 receives a user operation instructing the start of heating (step S102). An example of a user operation instructing the start of heating is pressing a button provided in the suction device 100. Another example of a user operation instructing the start of heating is inserting the rod-shaped substrate 150 into the storage portion 140.

[0097] Next, the suction device 100 determines whether the temperature of the heating unit 121 is less than 100°C (step S104). For example, the control unit 116 acquires the resistance of the heating unit 121 as a predetermined parameter, and estimates the temperature of the heating unit 121 based on the acquired resistance. Then, the control unit 116 determines whether the estimated temperature of the heating unit 121 is less than 100°C.

[0098] When it is determined that the temperature of the heating unit 121 is less than 100°C (step S104: YES), the suction device 100 turns on the DC / DC converter 163A having an output voltage of 8V (step S106). Thereafter, the suction device 100 starts preheating (step S114). In this case, the suction device 100 performs preheating while applying a voltage of 8V to the heating unit 121.

[0099] When it is determined that the temperature of the heating unit 121 is 100° C. or higher (step S104 : NO), the suction device 100 determines whether the temperature of the heating unit 121 is lower than 200° C. (step S108 ).

[0100] When it is determined that the temperature of the heating unit 121 is less than 200°C (step S108: YES), the suction device 100 turns on the DC / DC converter 163B having an output voltage of 7V (step S110). Thereafter, the suction device 100 starts preheating (step S114). In this case, the suction device 100 performs preheating while applying a voltage of 7V to the heating unit 121.

[0101] When it is determined that the temperature of the heating unit 121 is 200°C or higher (step S108: NO), the suction device 100 turns on the DC / DC converter 163C having an output voltage of 6V (step S112). Thereafter, the suction device 100 starts preheating (step S114). In this case, the suction device 100 performs preheating while applying a voltage of 6V to the heating unit 121.

[0102] <3.Supplement>

[0103] The above, while referring to the attached Figure 1 While the preferred embodiments of the present disclosure are described in detail, the present disclosure is not limited to the examples involved. Obviously, anyone with ordinary knowledge in the technical field to which the present disclosure belongs can think of various variations or modifications within the scope of the technical ideas described in the claims, and can understand that these also belong to the technical scope of the present disclosure.

[0104] (1) First Modification

[0105] In the above embodiment, an example in which the predetermined parameter is a value corresponding to the temperature of the heating unit 121 is described, but the present disclosure is not limited to this example.

[0106] The prescribed parameter may also be a value corresponding to the time elapsed since the last heating by the heating unit 121 was finished. The prescribed parameter corresponds to the interval from the last heating end to the start of this heating when the heating unit 121 starts heating, when the prescribed parameter is obtained at the timing. That is, the shorter the elapsed time represented by the prescribed parameter, the heavier the degree of continuous smoking. In this regard, according to this structure, an appropriate voltage corresponding to whether continuous smoking has been performed and the degree of continuous smoking can be applied to the heating unit 121 to heat the rod-type substrate 150. As a result, the quality of user experience can be further improved.

[0107] The shorter the elapsed time represented by the prescribed parameter is, the control unit 116 turns on the DC / DC converter 163 with a lower output voltage. Specifically, the shorter the elapsed time from the end of the last heating by the heating unit 121 to the start of this heating is, the control unit 116 turns on the DC / DC converter 163 with a lower output voltage. For example, the control unit 116 may determine that there is no continuous smoking when the elapsed time from the end of the last heating by the heating unit 121 to the start of this heating is 60 seconds or more, and turns on the DC / DC converter 163A with an output voltage of 8V. In addition, for example, the control unit 116 may determine that light continuous smoking is performed when the elapsed time from the end of the last heating by the heating unit 121 to the start of this heating is 30 seconds or more and less than 60 seconds, and turns on the DC / DC converter 163B with an output voltage of 7V. In addition, for example, the control unit 116 may determine that heavy continuous smoking has been performed when the time from the heating unit 121 finishing the last heating to the start of this heating is less than 30 seconds, and turn on the DC / DC converter 163C with an output voltage of 6V. According to this structure, a low voltage can be applied to the heating unit 121 in the case of light continuous smoking, or a further low voltage can be applied to the heating unit 121 in the case of heavy continuous smoking, thereby preventing the preheating period from becoming extremely short. As a result, the inhalable period can be started in a state where the moisture in the rod-shaped substrate 150 is fully evaporated. In this way, the taste can be improved even in the case of continuous smoking.

[0108] The control unit 116 starts counting the elapsed time when the heating performed by the heating unit 121 is finished. After that, the control unit 116 may also turn on the DC / DC converter 163 with the highest output voltage among the multiple DC / DC converters 163 when the elapsed time represented by the specified parameter is above the specified threshold. Here, the control unit 116 may also stop counting the elapsed time when the elapsed time reaches the specified threshold. For example, the control unit 116 may also turn on the DC / DC converter 163A with an output voltage of 8V when the elapsed time from the end of the last heating of the heating unit 121 to the start of this heating is above 60 seconds. In this case, the control unit 116 may also count the elapsed time until 60 seconds have passed since the end of the last heating of the heating unit 121, and stop counting the elapsed time when 60 seconds have been reached. This is because the DC / DC converter 163A is always turned on after the elapsed time reaches 60 seconds. According to this structure, the power consumption of the suction device 100 can be suppressed.

[0109] (2) Second Modification

[0110] The heating unit 121 is configured as a resistance heat radiator. Moreover, the resistance of the heating unit 121 (more specifically, the resistance heat radiator constituting the heating unit 121) changes according to the temperature change of the heating unit 121 itself. In particular, the higher the temperature of the heating unit 121, the higher the resistance of the heating unit 121. When the voltage applied to the heating unit 121 is fixed, the higher the resistance of the heating unit 121, the lower the heating efficiency.

[0111] Therefore, the control unit 116 may also implement output control of the heating unit 121. The so-called output control of the heating unit 121 is a control in which the voltage applied to the heating unit 121 per unit time increases as the temperature of the heating unit 121 increases. In detail, the control unit 116 increases the voltage applied to the heating unit 121 per unit time according to the increase in the resistance of the heating unit 121 accompanying the increase in the temperature of the heating unit 121. According to this structure, by increasing the voltage applied to the heating unit 121 per unit time, the decrease in heating efficiency caused by the increase in the resistance of the heating unit 121 is offset. That is, it is possible to maintain high heating efficiency.

[0112] The control unit 116 performs output control during the period when the temperature of the heating unit 121 continues to rise after the heating by the heating unit 121 starts. In detail, the control unit 116 performs output control during the preheating period, especially during the variable time period in the preheating period. According to this structure, the desired heating efficiency can be maintained during the preheating period, so the length of the preheating period can be optimized. As a result, usability can be improved.

[0113] The control unit 116 performs output control so that the output of the heating unit 121 becomes a predetermined target value. Specifically, the control unit 116 performs output control so that the output of the heating unit 121 calculated based on the resistance of the heating unit 121 and the voltage applied to the heating unit 121 becomes a predetermined target value (hereinafter also referred to as an output target). According to this configuration, since the output of the heating unit 121 is balanced in a state consistent with or substantially consistent with the output target, the load of the power supply unit 111 can be balanced. As a result, the degradation of the power supply unit 111 can be reduced.

[0114] The control unit 116 may also set the output target based on the maximum output of the power supply unit 111. For example, the control unit 116 may set the output target to about 90% of the maximum output of the power supply unit 111, or set a value substantially equal to the maximum output as the output target. According to this structure, the heating efficiency of the heating unit 121 can be maximized.

[0115] The control unit 116 may also control the timing of implementing the output control based on the value corresponding to the temperature of the heating unit 121. The value corresponding to the temperature of the heating unit 121 may be the temperature of the heating unit 121 itself, or the resistance of the heating unit 121 that changes according to the temperature change of the heating unit 121. For example, the control unit 116 may also implement the output control every time the temperature of the heating unit 121 rises by 100°C. According to this structure, the output of the heating unit 121 can reach the output target at an appropriate timing.

[0116] The structure of the suction device 100 according to this modification is similar to that of the Figure 3 The structure described above is the same.

[0117] The control unit 116 implements the following output control: the higher the temperature of the heating unit 121 is, the longer the time during which the power supply to the heating unit 121 is turned on per unit time is. Specifically, the control unit 116 may also be implemented as the output control as follows: the first switching element 161 is controlled so that the higher the temperature of the heating unit 121 is, the longer the time during which the power supply to the heating unit 121 is turned on per unit time is. As an example, as the temperature of the heating unit 121 rises, the control unit 116 increases the duty cycle of the power pulse supplied to the heating unit 121. According to this structure, the decrease in heating efficiency caused by the increase in the resistance of the heating unit 121 can be offset by increasing the duty cycle of the power pulse. That is, high heating efficiency can be maintained. Regarding this point, while referring to Figure 6 While explaining.

[0118] Figure 6 It is a graph for explaining the output control according to this modification. Figure 6 The graph 30 shown shows the temperature change of the heating unit 121 during the preheating period. The vertical axis of the graph 30 is the temperature of the heating unit 121, and also shows the resistance of the heating unit 121. The horizontal axis of the graph 30 is time (seconds).

[0119] like Figure 6As shown, when the temperature of the heating section 121 reaches 100°C, 200°C, and 300°C, the resistance of the heating section 121 becomes 1.0Ω, 1.75Ω, and 2.5Ω, respectively. Furthermore, the control section 116 sets the duty cycle to 40% during the period from when the temperature of the heating section 121 reaches 100°C to when it reaches 200°C. Next, the control section 116 sets the duty cycle to 70% during the period from when the temperature of the heating section 121 reaches 100°C to when it reaches 200°C. Next, the control section 116 sets the duty cycle to 100% during the period from when the temperature of the heating section 121 reaches 200°C to when it reaches 300°C. The output "P" of the heating section 121 is calculated by the following formula based on the resistance "R" of the heating section 121, the voltage "V" applied to the heating section 121, and the duty cycle "D".

[0120]

[0121] First, the case where continuous smoking is not performed, that is, the case where the DC / DC converter 163A with an output voltage of 8 V is turned on will be described.

[0122] When the temperature of the heating section 121 is 100°C, according to the above mathematical formula (1), the output "P" of the heating section 121 is 25.6W. When the temperature of the heating section 121 is 200°C, according to the above mathematical formula (1), the output "P" of the heating section 121 is 25.6W. When the temperature of the heating section 121 is 300°C, according to the above mathematical formula (1), the output "P" of the heating section 121 is 25.6W. In this way, during the pre-heating period, the output "P" of the heating section 121 is maintained at an output target of 25.6W, which is substantially the same as the maximum output 26W of the power supply section 111. According to this structure, the pre-heating period can be shortened. In addition, since the output of the heating section 121 can be balanced, the load on the power supply section 111 can be reduced.

[0123] As a comparative example, assume that the output voltage of the DC / DC converter 163 is 5V and the duty cycle is always maintained at 100%. When the temperature of the heating section 121 is 100°C, according to the above mathematical formula (1), the output "P" of the heating section 121 is 25W. When the temperature of the heating section 121 is 200°C, according to the above mathematical formula (1), the output "P" of the heating section 121 is 14.2W. When the temperature of the heating section 121 is 300°C, according to the above mathematical formula (1), the output "P" of the heating section 121 is 10W. In this way, in the comparative example, the higher the temperature of the heating section 121 increases, the lower the output "P" of the heating section 121 decreases, making it difficult to perform efficient heating. In this regard, in this variant, compared with the comparative example, efficient heating can be achieved.

[0124] Next, the case where light continuous smoking is performed, that is, the case where the DC / DC converter 163B with an output voltage of 7V is turned on is described. When the temperature of the heating unit 121 is 100°C, according to the above mathematical formula (1), the output "P" of the heating unit 121 becomes 19.6W. When the temperature of the heating unit 121 is 200°C, according to the above mathematical formula (1), the output "P" of the heating unit 121 is 19.6W. When the temperature of the heating unit 121 is 300°C, according to the above mathematical formula (1), the output "P" of the heating unit 121 is 19.6W. In this way, during the pre-heating period, the output "P" of the heating unit 121 is maintained at the output target of 19.6W. According to this structure, since the output of the heating unit 121 can be balanced, the load of the power supply unit 111 can be reduced. In addition, the output of the heating unit 121 is lower than that in the case where continuous smoking is not performed, so that the excessive shortening of the pre-heating period can be prevented, and the deterioration of the taste can be prevented.

[0125] Next, the case where heavy continuous smoking is performed, that is, the case where the DC / DC converter 163C with an output voltage of 6V is turned on, is described. When the temperature of the heating unit 121 is 100°C, the output "P" of the heating unit 121 is 14.4W according to the above mathematical formula (1). When the temperature of the heating unit 121 is 200°C, the output "P" of the heating unit 121 is 14.4W according to the above mathematical formula (1). When the temperature of the heating unit 121 is 300°C, the output "P" of the heating unit 121 is 14.4W according to the above mathematical formula (1). In this way, during the preheating period, the output "P" of the heating unit 121 is maintained at the output target 14.4W. According to this structure, since the output of the heating unit 121 can be balanced, the load of the power supply unit 111 can be reduced. In addition, the output of the heating unit 121 is lower than the case where there is no continuous smoking and the case where light continuous smoking is performed, so that the preheating period can be prevented from being excessively shortened and the deterioration of the taste can be prevented.

[0126] In addition, in the above, an example of implementing output control every time the temperature of the heating unit 121 rises by 100°C is described, but the present disclosure is not limited to the example involved. The temperature interval for implementing output control is not limited to 100°C, and any temperature interval such as 10°C or 1°C can be set. By shortening the temperature interval for implementing output control, for example, the change in duty cycle can be made close to linear. As a result, the output of the heating unit 121 can be prevented from deviating from the output target.

[0127] In addition, in the above, an example of controlling the timing of implementing output control based on the temperature of the heating unit 121 is described, but the present disclosure is not limited to the example involved. The control unit 116 can also control the timing of implementing output control based on the elapsed time from the start of heating. For example, the control unit 116 can also implement output control in a cycle of 10 seconds. According to this structure, the output of the heating unit 121 can also reach the output target at an appropriate timing. In addition, the time interval for implementing output control is not limited to 10 seconds, and any time interval such as 5 seconds or 1 second can be set. By shortening the time interval for implementing output control, for example, the change in duty cycle can be made close to linear. As a result, the output of the heating unit 121 can be prevented from deviating from the output target.

[0128] (3) Third Modification

[0129] As described in the above embodiment, the higher the temperature of the heating unit 121 at the start of heating, the more the suction device 100 reduces the voltage applied to the heating unit 121. In the above embodiment, the higher the temperature of the heating unit 121 at the start of heating, the DC / DC converter 163 with a lower output voltage is turned on, thereby reducing the voltage applied to the heating unit 121. However, the present disclosure is not limited to the examples involved.

[0130] For example, the suction device 100 may control the first switch element 161 based on a predetermined parameter so that the voltage applied to the heating section 121 per unit time is reduced. Specifically, the control unit 116 may control the first switch element 161 so that the higher the temperature of the heating section 121 at the start of heating, the shorter the time during which the power supply to the heating section 121 per unit time is turned on. As an example, the higher the temperature of the heating section 121 at the start of heating, the lower the duty ratio of the power pulse supplied to the heating section 121 by the control unit 116. According to this structure, a low voltage is applied to the heating section 121 in the case of light continuous smoking, or a further low voltage is applied to the heating section 121 in the case of heavy continuous smoking, so that the pre-heating period can be prevented from becoming extremely short. As a result, the inhalable period can be started in a state where the moisture in the rod-shaped substrate 150 is fully evaporated. In this way, as in the above-mentioned embodiment, the taste can be improved even in the case of continuous smoking.

[0131] The second modification and the third modification may also be combined. That is, the control unit 116 may also reduce the voltage applied to the heating unit 121 per unit time in the output control based on the specified parameters. For example, the control unit 116 may switch the duty cycle in the order of 40%, 70%, and 100% according to the temperature rise during the preheating period when the temperature of the heating unit 121 at the start of heating is less than 100°C. On the other hand, the control unit 116 may switch the duty cycle in the order of 30%, 60%, and 90% according to the temperature rise during the preheating period when the temperature of the heating unit 121 at the start of heating is greater than 100°C and less than 200°C. In addition, the control unit 116 may switch the duty cycle in the order of 20%, 50%, and 80% according to the temperature rise during the preheating period when the temperature of the heating unit 121 at the start of heating is greater than 200°C. According to this structure, it is possible to prevent the preheating period from becoming extremely short in the case of continuous smoking, and to improve the taste. Furthermore, the load of the power supply unit 111 can be balanced.

[0132] (4) Others

[0133] In the above embodiment, an example is described in which the DC / DC converter 163 selected based on the specified parameters is turned on throughout the entire heating period, but the present disclosure is not limited to this example. The control unit 116 only needs to turn on the DC / DC converter 163 selected based on the specified parameters at least during the time variable period of the preparatory heating period, and can also switch the DC / DC converter 163 to be turned on afterwards.

[0134] In addition to the above-mentioned examples, there may be many other considerations for the prescribed parameters. The prescribed parameters may also include parameters related to the environment such as temperature and humidity. In this case, the control unit 116 can turn on the appropriate DC / DC converter 163 in the environment where the suction device 100 is used. In addition, the prescribed parameters may also include a heating curve. In this case, the control unit 116 can turn on the appropriate DC / DC converter 163 for the heating curve used.

[0135] In the above, an example in which the suction device 100 has three DC / DC converters 163 is described, but the present disclosure is not limited to the example involved. The suction device 100 may also have two or more DC / DC converters 163. In addition, it may be possible to output multiple voltages from one DC / DC converter 163, in which case the suction device 100 only needs to have one DC / DC converter 163.

[0136] The voltage applied to the heating unit 121 per unit time may also be understood as an average value of the voltage applied to the heating unit 121. In addition, the voltage applied to the heating unit 121 per unit time may also be understood as an effective value of the voltage applied to the heating unit 121.

[0137] In the above, specific numerical values ​​are exemplified regarding the maximum output of the power supply unit 111, the output voltage of the DC / DC converter 163, the resistance of the heating unit 121, etc. However, these are merely examples, and any other numerical values ​​may be applied.

[0138] In the above, an example is described in which the parameter related to the temperature of the heated aerosol source specified in the heating curve is the temperature of the heating unit 121, but the present disclosure is not limited to this example. As a parameter related to the temperature of the heated aerosol source, in addition to the temperature of the heating unit 121 itself described in the above embodiment, the resistance of the heating unit 121 can be listed.

[0139] In addition, the series of processing of each device described in this specification can also be implemented using any one of software, hardware, and a combination of software and hardware. The program constituting the software is, for example, pre-stored in a recording medium (in detail, a non-temporary storage medium readable by a computer) provided inside or outside each device. Moreover, each program is read into RAM, for example, when executed by a computer controlling each device described in this specification, and executed by a processing circuit such as a CPU. The above-mentioned recording medium is, for example, a magnetic disk, an optical disk, a magneto-optical disk, a flash memory, etc. In addition, the above-mentioned computer program may also be distributed, for example, via a network, without using a recording medium. In addition, the above-mentioned computer may also be an integrated circuit for a specific purpose such as an ASIC, a general-purpose processor that performs functions by reading in a software program, or a computer on a server for cloud computing, etc. In addition, the series of processing of each device described in this specification may also be distributed by multiple computers.

[0140] In addition, the processing described in the flowcharts and timing diagrams in this specification does not have to be performed in the order shown in the diagrams. Several processing steps can also be performed in parallel. In addition, additional processing steps can be used, and some processing steps can be omitted.

[0141] In addition, the following structures also belong to the technical scope of the present disclosure. (1)

[0143] An aerosol generating system comprising:

[0144] Power supply department;

[0145] A plurality of transformers for converting and outputting a voltage applied from the power supply unit;

[0146] a heating unit that heats the aerosol source contained in the substrate using power supplied from one of the plurality of transformers; and

[0147] The control unit selects one of the plurality of transformers to apply a voltage to the heating unit based on a predetermined parameter. (2)

[0149] The aerosol generating system according to (1),

[0150] The predetermined parameter is acquired at the timing when the heating unit starts heating. (3)

[0152] The aerosol generating system according to (1) or (2),

[0153] The predetermined parameter is a value corresponding to the temperature of the heating unit. (4)

[0155] The aerosol generating system described in (3),

[0156] The output voltage of each of the plurality of transformers is different,

[0157] The control unit selects the transformer having the lower output voltage as the transformer that applies voltage to the heating unit as the temperature of the heating unit indicated by the predetermined parameter is higher. (5)

[0159] The aerosol generating system according to (1) or (2),

[0160] The predetermined parameter is a value corresponding to the elapsed time since the last heating by the heating unit was completed. (6)

[0162] The aerosol generating system described in (5),

[0163] The output voltage of each of the plurality of transformers is different,

[0164] The control unit selects the transformer having the lower output voltage as the transformer that applies voltage to the heating unit as the elapsed time represented by the predetermined parameter is shorter. (7)

[0166] The aerosol generating system described in (6),

[0167] The control unit selects the transformer having the highest output voltage among the plurality of transformers as the transformer to apply voltage to the heating unit when the elapsed time represented by the predetermined parameter is equal to or greater than a predetermined threshold value,

[0168] The control unit starts counting the elapsed time when heating by the heating unit is completed, and stops counting the elapsed time when the elapsed time reaches the predetermined threshold value. (8)

[0170] The aerosol generating system according to any one of (1) to (7),

[0171] The aerosol generating system further comprises: a notification unit for notifying a user of information;

[0172] The control section controls the notification section to notify information corresponding to the transformer selected as one of the transformers that applies a voltage to the heating section. (9)

[0174] The aerosol generating system according to any one of (1) to (8),

[0175] The control unit performs output control to increase a voltage applied to the heating unit per unit time as the temperature of the heating unit increases. (10)

[0177] The aerosol generating system described in (9),

[0178] As the output control, the control unit causes the power supply to the heating unit to be turned on for a longer period per unit time as the temperature of the heating unit rises. (11)

[0180] The aerosol generating system described in (9) or (10),

[0181] The control unit reduces a voltage applied to the heating unit per unit time in the output control based on the predetermined parameter. (12)

[0183] The aerosol generating system according to any one of (9) to (11),

[0184] The control unit performs the output control while the temperature of the heating unit continues to rise after the start of heating. (13)

[0186] The aerosol generating system according to any one of (1) to (12),

[0187] The aerosol generating system further includes the substrate. (14)

[0189] A control method, which is a control method executed by a computer controlling an attraction device,

[0190] The suction device comprises:

[0191] Power supply department;

[0192] a plurality of transformers for converting and outputting a voltage applied from the power supply unit; and

[0193] a heating unit that heats the aerosol source contained in the substrate using power supplied from one of the plurality of transformers,

[0194] The control method includes selecting one of the plurality of transformers that applies a voltage to the heating unit based on a predetermined parameter. (15)

[0196] a program executed by a computer controlling the attraction device,

[0197] The suction device comprises:

[0198] Power supply department;

[0199] a plurality of transformers for converting and outputting a voltage applied from the power supply unit; and

[0200] a heating unit that heats the aerosol source contained in the substrate using power supplied from one of the plurality of transformers,

[0201] The program causes a computer to select one of the plurality of transformers to apply a voltage to the heating unit based on a predetermined parameter.

[0202] Explanation of symbols

[0203] 100 suction device; 111 power supply unit; 112 sensor unit; 113 notification unit; 114 storage unit; 115 communication unit; 116 control unit; 121 heating unit; 140 storage unit; 141 internal space; 142 opening; 143 bottom; 144 heat insulation unit; 150 rod-shaped base material; 151 base material unit; 152 suction port unit; 161 first switching element; 162 second switching element; 163 DC / DC converter.

Claims

1. An aerosol generating system comprising: Power supply department; A plurality of transformers for converting and outputting a voltage applied from the power supply unit; a heating unit that heats the aerosol source contained in the substrate using power supplied from one of the plurality of transformers; and The control unit selects one of the plurality of transformers to apply a voltage to the heating unit based on a predetermined parameter.

2. An aerosol generating system according to claim 1, wherein: The predetermined parameter is acquired at the timing when the heating unit starts heating.

3. An aerosol generating system according to claim 1 or 2, wherein: The predetermined parameter is a value corresponding to the temperature of the heating unit.

4. An aerosol generating system according to claim 3, wherein: The output voltage of each of the plurality of transformers is different, The control unit selects the transformer having the lower output voltage as the transformer that applies voltage to the heating unit as the temperature of the heating unit indicated by the predetermined parameter is higher.

5. An aerosol generating system according to claim 1 or 2, wherein: The predetermined parameter is a value corresponding to the elapsed time since the last heating by the heating unit was completed.

6. An aerosol generating system according to claim 5, wherein: The output voltage of each of the plurality of transformers is different, The control unit selects the transformer having the lower output voltage as the transformer that applies voltage to the heating unit as the elapsed time represented by the predetermined parameter is shorter.

7. An aerosol generating system according to claim 6, wherein: The control unit selects the transformer having the highest output voltage among the plurality of transformers as the transformer to apply voltage to the heating unit when the elapsed time represented by the predetermined parameter is equal to or greater than a predetermined threshold value, The control unit starts counting the elapsed time when heating by the heating unit is completed, and stops counting the elapsed time when the elapsed time reaches the predetermined threshold value.

8. The aerosol generating system according to any one of claims 1 to 7, wherein: The aerosol generating system further comprises: a notification unit for notifying a user of information; The control section controls the notification section to notify information corresponding to the transformer selected as one of the transformers that applies a voltage to the heating section.

9. The aerosol generating system according to any one of claims 1 to 8, wherein: The control unit performs output control to increase a voltage applied to the heating unit per unit time as the temperature of the heating unit increases.

10. An aerosol generating system according to claim 9, wherein: As the output control, the control unit causes the power supply to the heating unit to be turned on for a longer period per unit time as the temperature of the heating unit rises.

11. An aerosol generating system according to claim 9 or 10, wherein: The control unit reduces a voltage applied to the heating unit per unit time in the output control based on the predetermined parameter.

12. The aerosol generating system according to any one of claims 9 to 11, wherein: The control unit performs the output control while the temperature of the heating unit continues to rise after the start of heating.

13. The aerosol generating system according to any one of claims 1 to 12, wherein: The aerosol generating system further includes the substrate.

14. A control method, which is a control method executed by a computer controlling an attraction device, The suction device comprises: Power supply department; A plurality of transformers for converting and outputting a voltage applied from the power supply unit; a heating unit that heats the aerosol source contained in the substrate using power supplied from one of the plurality of transformers; The control method comprises: Based on a predetermined parameter, one of the plurality of transformers is selected to apply a voltage to the heating unit.

15. A program executed by a computer controlling an attraction device, The suction device comprises: Power supply department; A plurality of transformers for converting and outputting a voltage applied from the power supply unit; a heating unit that heats the aerosol source contained in the substrate using power supplied from one of the plurality of transformers; The program causes the computer to execute: Based on a predetermined parameter, one of the plurality of transformers is selected to apply a voltage to the heating unit.

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