Aerosol-generating system, control method, and program
Patent Information
- Application Number
- CN202280098554.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2022-07-28
- Publication Date
- 2025-03-14
Smart Images
Figure CN119630301A_ABST
Abstract
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 atomizers that generate substances to be inhaled by users are becoming widely popular. 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 inhaling 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 inhaling the aerosol is also referred to as "puffing" or "inhaling action".
[0003] Many technologies related to the treatment 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 battery information 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, in the technology disclosed in Patent Document 1, there is still room for improvement in heating efficiency.
[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 structure that can further improve the heating efficiency.
[0010] Means for solving problems
[0011] In order to solve the above-mentioned problems, according to a certain aspect of the present invention, there is provided an aerosol generating system, comprising: a power supply unit; a heating unit, which uses the power supplied from the power supply unit to heat an aerosol source contained in a substrate; and a control unit, which controls the operation of the heating unit, and the control unit implements the following output control, wherein the higher the temperature of the heating unit increases, the higher the voltage applied to the heating unit per unit time increases.
[0012] Alternatively, the aerosol generating system further includes a first switch element for switching on / off the power supply to the heating section, and the control section implements the following operation as the output control, which is to control the first switch element so that the higher the temperature of the heating section increases, the longer the time during which the power supply to the heating section is turned on per unit time becomes.
[0013] Alternatively, the aerosol generating system further comprises: a plurality of transformers, which are arranged between the power supply unit and the heating unit, and which convert the voltage applied from the power supply unit and apply the voltage to the heating unit; and a second switching element, which switches one of the plurality of transformers to apply the voltage to the heating unit, wherein the output voltages of the plurality of transformers are different, and the control unit implements the following operation as the output control, which operation is to control the second switching element so that the higher the temperature of the heating unit, the higher the output voltage of the transformer applies the voltage to the heating unit.
[0014] The control unit may perform the output control while the temperature of the heating unit continues to rise after the start of heating.
[0015] The heating unit may be a resistance heating element whose resistance changes according to temperature, and the control unit may perform the output control so that the output of the heating unit becomes a predetermined target value.
[0016] The control unit may set the target value based on a maximum output of the power supply unit.
[0017] The control unit may reduce a voltage applied to the heating unit per unit time as the temperature of the heating unit at the start of heating increases.
[0018] The control unit may control the first switching element so that the higher the temperature of the heating unit at the start of heating, the shorter the time during which power is supplied to the heating unit per unit time.
[0019] The control unit may control the second switching element so that the transformer having a lower output voltage applies a voltage to the heating unit as the temperature of the heating unit at the start of heating increases.
[0020] The control unit may lower the target value as the temperature of the heating unit at the start of heating is higher.
[0021] The control unit may control a timing for performing the output control based on a value corresponding to the temperature of the heating unit.
[0022] The control unit may control the timing for performing the output control based on an elapsed time from 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 that controls a suction device, wherein the suction device comprises: a power supply unit; and a heating unit, which uses the power supplied from the power supply unit to heat the aerosol source contained in the substrate, and the control method includes implementing the following output control, wherein the higher the temperature of the heating unit increases, the higher the voltage applied to the heating unit per unit time increases.
[0025] In addition, in order to solve the above-mentioned problems, according to another aspect of the present invention, a program is provided, which is a program executed by a computer controlling a suction device, wherein the suction device comprises: a power supply unit; and a heating unit, which uses the power supplied from the power supply unit to heat the aerosol source contained in the substrate, and the program causes the computer to execute: implementing the following output control, wherein the higher the temperature of the heating unit increases, the higher the voltage applied to the heating unit per unit time increases.
[0026] Effects of the Invention
[0027] As described above, according to the present disclosure, a structure capable of further improving heating efficiency is provided. 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 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 one embodiment of the present disclosure.
[0031] Figure 4 This is a diagram for explaining output control according to the embodiment.
[0032] Figure 5 This is a flowchart showing an example of the flow of processing executed by the suction device according to the embodiment.
[0033] Figure 6 This is a block diagram for explaining output control according to the first modification example.
[0034] Figure 7 This is a flowchart showing an example of the flow of processing executed by the suction device according to the same modification. DETAILED DESCRIPTION
[0035] The preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In addition, in the present specification and the drawings, for components having substantially the same functional structure, the same reference numerals are given to omit repeated description.
[0036] <1. Example of structure>
[0037] The suction device is a device that generates a substance to be sucked in by the user. Hereinafter, the case where the substance generated by the suction device is an aerosol will be described. In addition, the substance generated by the suction device may also be a gas.
[0038] 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.
[0039] The power supply unit 111 stores electric power and supplies electric power to each component of the suction device 100 based on control by 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.
[0040] The sensor unit 112 acquires 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 acquires a value accompanying the suction performed by the user. 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.
[0041] 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.
[0042] The storage unit 114 stores various information used for the operation of the suction device 100. The storage unit 114 is composed of a nonvolatile storage medium such as a flash memory, for example.
[0043] The communication unit 115 is a communication interface capable of performing communication in accordance with any wired or wireless communication standard. As such a communication standard, for example, a standard using Wi-Fi (registered trademark), Bluetooth (registered trademark), BLE (Bluetooth Low Energy (registered trademark): low-power Bluetooth), NFC (Near Field Communication), or LPWA (Low Power Wide Area) can be adopted.
[0044] The control unit 116 functions as a calculation processing device and a control device, and controls all operations 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.
[0045] The housing portion 140 has an internal space 141, and a part of the rod-shaped substrate 150 is housed in the internal space 141, and the rod-shaped substrate 150 is held. The housing portion 140 has an opening 142 that communicates the internal space 141 with the outside, and houses the rod-shaped substrate 150 inserted into the internal space 141 from the opening 142. For example, the housing portion 140 is a cylindrical body having the opening 142 and the bottom 143 as the bottom surface, and defines a columnar internal space 141. An air flow path that supplies air to the internal space 141 is connected to the housing portion 140. 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 outflow 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.
[0046] 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 a flavor component derived from tobacco or not derived from tobacco. In the case where the suction device 100 is a medical inhaler such as a nebulizer, the aerosol source may also include a drug. The aerosol source may be, for example, a polyol such as glycerin and propylene glycol, and a liquid such as water containing a flavor component derived from tobacco or not derived from tobacco, or a solid containing a flavor component derived from tobacco or not derived from tobacco. When the rod-shaped substrate 150 is held in the housing portion 140, at least a portion of the substrate portion 151 is accommodated in the internal space 141, and at least a portion of the mouthpiece 152 protrudes from the opening 142. Furthermore, if the user holds and sucks the mouthpiece 152 protruding from the opening 142, 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.
[0047] The heating unit 121 generates aerosol by heating the aerosol source and atomizing 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 generates heat, the base material portion 151 of the rod-shaped base material 150 is heated from the outer periphery, and an aerosol is generated. When the heating portion 121 is powered by the power supply portion 111, the heating portion 121 generates heat. As an example, power may be supplied when the sensor portion 112 detects that the user has started suction and / or that specified information has been input. Furthermore, power supply may be stopped when the sensor portion 112 detects that the user has finished suction and / or that specified information has been input.
[0048] The heat insulating part 144 prevents heat conduction from the heating part 121 to other components. For example, the heat insulating part 144 is made of a vacuum heat insulating material or an aerogel heat insulating material.
[0049] 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 can be adopted.
[0050] As an example, the heating portion 121 may be configured in a blade shape and arranged to protrude from the bottom 143 of the receiving 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, and heats the base portion 151 of the rod-shaped base 150 from the inside. As another example, the heating portion 121 may be arranged to cover the bottom 143 of the receiving 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 receiving portion 140, a blade-shaped second heating portion, and a third heating portion covering the bottom 143 of the receiving portion 140.
[0051] As another example, the housing 140 may include an opening and closing mechanism such as a hinge that opens and closes a portion of the outer shell that forms the internal space 141. Furthermore, the housing 140 may clamp and accommodate the rod-shaped substrate 150 inserted into the internal space 141 by opening and closing the outer shell. In this case, the heating unit 121 may be provided at the clamping portion of the housing 140 to press and heat the rod-shaped substrate 150.
[0052] In addition, the method of atomizing the aerosol source is not limited to heating by the heating unit 121. For example, the method of 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 that generates a magnetic field instead of the heating unit 121. The sensor that generates heat by induction heating can be provided in the suction device 100 or included in the rod-shaped substrate 150.
[0053] In addition, the suction device 100 generates aerosol to be sucked 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.
[0054] <2. Technical features>
[0055] (1) Heating curve
[0056] 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.
[0057] The so-called heating curve is control information for controlling the temperature at which the aerosol source is heated. The heating curve may also be control information for controlling the temperature of the heating section 121. As an example, the heating curve may include a target value of the temperature at which the aerosol source is heated (hereinafter, also referred to as the target temperature). The target temperature may also vary according to the elapsed time from the start of heating, in which case the heating curve includes information on the time series transition of the specified target temperature. As another example, the heating curve may include parameters for specifying the method of supplying 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 method of feedback control to be adopted. The on / off of the power supply to the heating section 121 may also be understood as the on / off of the heating section 121.
[0058] 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. The heating curve is typically designed so that when the user inhales the aerosol generated from the rod-shaped substrate 150, the flavor that the user enjoys becomes 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.
[0059] The temperature control of the heating unit 121 can be achieved, for example, by well-known feedback control. The feedback control can also be, for example, PID control (Proportional-Integral-Differential Controller). The control unit 116 can supply the 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, the control unit 116 adjusts the duty cycle of the power pulse in the feedback control, thereby enabling the temperature control of the heating unit 121. 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 before the actual temperature reaches the target temperature, interrupt the heating based on the heating unit 121 when the actual temperature reaches the target temperature, and restart the heating based on the heating unit 121 if the actual temperature becomes lower than the target temperature.
[0060] As an example, the temperature of the heating section 121 can be quantified by measuring or estimating the resistance (more accurately, the resistor) of the heating section 121 (more accurately, the resistor that constitutes the heating section 121). This is because the resistance of the resistor changes with temperature. The resistance of the resistor can be estimated, for example, by measuring the voltage drop at the resistor. The voltage drop at the resistor can be measured by a voltage sensor that measures the potential difference applied to the resistor. In addition, the temperature of the heating section 121 can also be measured by a thermistor that is arranged near the heating section 121. A thermistor is a resistor whose resistance changes with temperature.
[0061] Hereinafter, the period from the start to the end of the process of generating aerosol using the rod-type substrate 150 is also referred to as a heating session. In other words, the so-called heating session is a period during which the action of the heating unit 121 is controlled based on the heating curve. The beginning 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 that is assumed to generate a sufficient amount of aerosol. The so-called preparatory heating period is the period from the start of heating to the start of the puffable period. The heating performed during the preparatory heating period is also called preparatory heating.
[0062] An example of the heating curve is shown in Table 1 below.
[0063] [Table 1]
[0064]
[0065] As shown in Table 1, the heating curve may also 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 may be specified in each period. In the example shown in Table 1, the heating curve is divided into a total of 8 periods, STEP0 to STEP7. In each STEP, the time series transition of the target temperature and the time series transition of the power supply parameter are specified. The STEP specified in the heating curve is an example of a unit period in this embodiment.
[0066] In each STEP, time control is sometimes implemented. The so-called time control is to terminate the control of the STEP by triggering the passage of a specified time (i.e., the duration set in each STEP). In addition, when time control is implemented, the change rate of the temperature of the heating section 121 can also be controlled so that the temperature of the heating section 121 reaches the target temperature at the end of the duration. In addition, when time control is implemented, the temperature of the heating section 121 can also be controlled so that the temperature of the heating section 121 reaches the target temperature in the middle of the duration, and then the temperature of the heating section 121 is maintained at the target temperature until the duration has passed. In the example shown in Table 1 above, time control is implemented in STEP1, and 4 to 7. Hereinafter, the period in which time control is implemented will also be referred to as a fixed time period.
[0067] In each STEP, time control is sometimes not implemented. In the case where time control is not implemented, the STEP is terminated when the temperature of the heating unit 121 reaches a predetermined temperature (i.e., the target temperature set in each STEP) as a trigger. Therefore, the duration of the STEP in which time control is not implemented is expanded or reduced according to the temperature change rate. In the example shown in Table 1 above, time control is not implemented in STEP0, 2, and 3. Hereinafter, the period in which time control is not implemented is also referred to as a time variable period.
[0068] Reference Figure 2 Next, a description will be given of a change in the temperature of the heating unit 121 when the control unit 116 performs temperature control in accordance with the heating curve shown in Table 1. 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 An example of a heating curve will be described.
[0069] As shown in Table 1 and Figure 2As shown, in STEP0, the temperature of the heating unit 121 rises from the initial temperature to 300°C. The so-called initial temperature is the temperature of the heating unit 121 when the heating starts. In STEP0, time control is not implemented. Therefore, STEP0 ends when the temperature of the heating unit 121 reaches 300°C. Figure 2 In the example shown, STEP 0 ends at 20 seconds. Thereafter, in STEP 1, the temperature of the heating unit 121 is maintained at 300° C. The preheating period ends with the end of STEP 1, and the puffable period starts with the start of STEP 2.
[0070] For the user, it is desirable that the preheating period be short. However, when the rod-shaped substrate 150 is not sufficiently heated, water may not evaporate and remain inside the rod-shaped substrate 150. If the user takes a puff in this state, there is a concern that hot water vapor may be delivered to the user's mouth. Therefore, it is desirable that the preheating period be ensured to be of a certain length. As an example, it is desirable that the temperature of the heating unit 121 be rapidly increased to 300° C. in STEP 0, and that the duration of STEP 1 be ensured to be of a certain length.
[0071] As shown in Table 1 and Figure 2 As shown, in STEP 2, the temperature of the heating unit 121 is reduced to 220°C. In STEP 2, time control is not implemented. Therefore, STEP 2 ends when the temperature of the heating unit 121 reaches 220°C. Figure 2 In the example shown, STEP 2 ends at 10 seconds. In STEP 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, next, in STEP 3, the temperature of the heating unit 121 rises to 230°C. In STEP 3, time control is not implemented. Therefore, STEP 3 ends when the temperature of the heating unit 121 reaches 230°C. Figure 2 In the example shown, STEP 3 ends at 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 2As shown, next, through STEP 4 to STEP 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 amount of aerosol generated can be maintained and the power consumption in the entire heating period can be suppressed.
[0074] As shown in Table 1 and Figure 2 As shown, in STEP 7, the temperature of the heating unit 121 is reduced. In STEP 7, the power supply to the heating unit 121 is turned off. In STEP 7, the duration is specified, but the target temperature is not specified. Therefore, STEP 7 ends with the end of the duration as a trigger. In STEP 7, a sufficient amount of aerosol can be generated by the residual heat of the rod-shaped substrate 150. Therefore, in this example, the inhalable period, that is, the heating period, ends together with the end of STEP 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 indicating 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 can be performed, for example, by lighting up an LED or vibrating. The user can refer to such a notification and take a puff immediately after the end of the preheating.
[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 indicating the end of the inhalable period before the end of the inhalable period, or notifies the user of information indicating that the inhalable period has ended 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 before the end of the inhalable period with reference to such a notification.
[0077] The heating curve described above is just an example, and various other examples are conceivable. As an example, the number of STEPs, the duration of each STEP, and the target temperature may be changed as appropriate.
[0078] (2) Output control during preheating
[0079] The heating unit 121 is configured as a resistance heating element. Furthermore, the resistance of the heating unit 121 (more specifically, the resistance heating element 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.
[0080] Therefore, the control unit 116 implements 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 is increased 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 such a structure, the reduction in heating efficiency caused by the increase in the resistance of the heating unit 121 per unit time can be offset by increasing the voltage applied to the heating unit 121 per unit time. That is, high heating efficiency can be maintained.
[0081] 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 (for example, Table 1 and Figure 2 In the example shown in STEP0), output control is implemented. According to such a 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, for example, the preheating period can be shortened, thereby improving usability.
[0082] 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 such a structure, the output of the heating unit 121 is averaged in a state that is consistent with or substantially consistent with the output target, so that the load of the power supply unit 111 can be averaged. As a result, the degradation of the power supply unit 111 can be reduced.
[0083] 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 a value substantially equal to the maximum output, such as about 90% of the maximum output of the power supply unit 111. According to such a configuration, the heating efficiency of the heating unit 121 can be maximized.
[0084] 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 such a structure, the output of the heating unit 121 can reach the output target at an appropriate timing.
[0085] Below, refer to Figure 3 as well as Figure 4 , an example of output control involved in this embodiment is described in detail.
[0086] 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 and a direct current (DC) / DC converter 163 between the power supply unit 111 and the heating unit 121 .
[0087] exist Figure 3 In the example shown, the maximum output of the power supply unit 111 is 26W.
[0088] 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 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.
[0089] The DC / DC converter 163 is a transformer that converts a DC voltage into a DC voltage. Figure 3As shown, the DC / DC converter 163 is arranged between the power supply unit 111 and the heating unit 121. 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 referred to as the input voltage, and the voltage output from the DC / DC converter 163 is also referred to as the output voltage. The input voltage and the output voltage are typically different, but they can also be the same. The output voltage of the DC / DC converter 163 is applied to the heating unit 121. Figure 3 In the illustrated example, the output voltage of the DC / DC converter 163 is 8 V, and 8 V is applied to the heating unit 121 .
[0090] The heating section 121 is a resistive heating element. As described above, the higher the temperature of the heating section 121 is, the higher the resistance of the heating section 121 (more specifically, the resistive heating element constituting the heating section 121) is. Therefore, the control section 116 implements the following operation as output control, which is to control the first switching element 161 so that the higher the temperature of the heating section 121 is, the longer the time during which the power supply to the heating section 121 is turned on per unit time becomes. For example, as the temperature of the heating section 121 rises, the control section 116 increases the duty cycle of the power pulse supplied to the heating section 121. According to such a structure, the reduction in heating efficiency caused by the increase in the resistance of the heating section 121 can be offset by increasing the duty cycle of the power pulse. That is, high heating efficiency can be maintained. In this regard, refer to Figure 4 Provide explanation.
[0091] Figure 4 This is a graph for explaining output control according to the present embodiment. Figure 4 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 the resistance of the heating unit 121 is also plotted. The horizontal axis of the graph 30 is time (seconds).
[0092] like Figure 4As 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 before the temperature of the heating section 121 reaches 100°C. Next, the control section 116 sets the duty cycle to 70% during the period after the temperature of the heating section 121 reaches 100°C and before it reaches 200°C. Next, the control section 116 sets the duty cycle to 100% during the period after the temperature of the heating section 121 reaches 200°C and before 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".
[0093] [Mathematical formula 1]
[0094]
[0095] 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 becomes 25.6 W. 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 becomes 25.6 W. 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 becomes 25.6 W. In this way, during the pre-heating period, the output "P" of the heating section 121 is maintained at the output target 25.6 W which is substantially the same as the maximum output 26 W of the power supply section 111. According to such a structure, the pre-heating period can be shortened.
[0096] 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 becomes 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 becomes 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 becomes 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 the present embodiment, efficient heating can be achieved compared to the comparative example.
[0097] (3) Processing process
[0098] Figure 5This is a flowchart showing an example of the flow of processing executed by the suction device 100 according to the present embodiment.
[0099] like Figure 5 As shown, first, the suction device 100 receives a user operation instructing the start of heating (step S102). An example of the user operation instructing the start of heating is pressing a button provided on the suction device 100. Another example of the user operation instructing the start of heating is inserting the rod-shaped substrate 150 into the storage portion 140.
[0100] Next, the suction device 100 sets the duty ratio to 40% and starts preliminary heating (step S104 ).
[0101] Next, the suction device 100 determines whether the temperature of the heating unit 121 has reached 100° C. (step S106 ). The suction device 100 stands by until the temperature of the heating unit 121 reaches 100° C. (step S106 : NO).
[0102] When it is determined that the temperature of the heating unit 121 has reached 100° C. (step S106 : YES), the suction device 100 sets the duty ratio to 70% (step S108 ).
[0103] Next, the suction device 100 determines whether the temperature of the heating unit 121 has reached 200° C. (step S110 ). Before the temperature of the heating unit 121 reaches 200° C., the suction device 100 stands by (step S110 : No).
[0104] When it is determined that the temperature of the heating unit 121 has reached 200° C. (step S110 : Yes), the suction device 100 sets the duty ratio to 100% (step S112 ).
[0105] Next, the suction device 100 determines whether the temperature of the heating unit 121 has reached 300° C. (step S114 ). Before the temperature of the heating unit 121 reaches 300° C., the suction device 100 stands by (step S114 : No).
[0106] When it is determined that the temperature of the heating unit 121 has reached 300° C. (step S114 : Yes), the suction device 100 ends the variable time period in the preheating period (step S116 ). Thereafter, the suction device 100 performs temperature control in subsequent periods such as the time-controlled period in the preheating period.
[0107] <3. Supplement>
[0108] The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, but the present disclosure is not limited to such examples. Anyone skilled in the art should understand that various variations or modifications can be thought of within the scope of the technical ideas described in the claims, which of course also fall within the technical scope of the present disclosure.
[0109] (1) First Modification
[0110] In the above embodiment, the suction device 100 controls the duty ratio of the power pulse supplied to the heating unit 121 as an example of output control, but the present disclosure is not limited to such an example. The suction device 100 may also switch the DC / DC converter 163 used as output control. Figure 6 , an example of output control involved in this variation is described in detail.
[0111] Figure 6 FIG. 1 is a block diagram for explaining output control according to this modification. Figure 6 , an example of a circuit connecting the power supply unit 111 and the heating unit 121 is illustrated in detail. Figure 6 As shown, the suction device 100 according to the present modification includes a first switching element 161 , a second switching element 162 , and three DC / DC converters 163 ( 163A to 163C) between the power supply unit 111 and the heating unit 121 .
[0112] exist Figure 6 In the example shown, the maximum output of the power supply unit 111 is 26W.
[0113] The structure of the first switch element 161 is as shown in FIG. Figure 3 As described above. However, the control unit 116 does not change the duty ratio as output control. For example, the control unit 116 may maintain the duty ratio at a fixed value during the preheating period.
[0114] The structure of the DC / DC converter 163 is as shown in FIG. Figure 3 As described above. However, the output voltages of the DC / DC converters 163A to 163C are different. Figure 6 In 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.
[0115] The second switch element 162 switches one of the plurality of 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 case where the second switch element 162 switches so that the voltage output from the DC / DC converter 163A is applied to the heating unit 121 is also referred to as turning on the DC / DC converter 163A. The same is true for the DC / DC converters 163B and 163C.
[0116] The heating unit 121 is a resistive heating element. As described above, the higher the temperature of the heating unit 121 is, the higher the resistance of the heating unit 121 (more specifically, the resistive heating element constituting the heating unit 121) is. Therefore, the control unit 116 implements the following operation as output control, which is to control the second switching element 162 so that the higher the temperature of the heating unit 121 is, the higher the output voltage of the DC / DC converter 163 is applied to the heating unit 121. For example, as the temperature of the heating unit 121 rises, the control unit 116 switches the DC / DC converter 163 that is turned on from the DC / DC converter 163C to the DC / DC converter 163B, and from the DC / DC converter 163B to the DC / DC converter 163A. According to such a structure, by turning on the DC / DC converter 163 with a higher output voltage to increase the voltage applied to the heating unit 121, it is possible to offset the reduction in heating efficiency caused by the increase in the resistance of the heating unit 121. That is, as in the above-mentioned embodiment, high heating efficiency can be maintained.
[0117] Next, refer to Figure 7 , describing the processing performed by the suction device 100 involved in this variation. Figure 7 This is a flowchart showing an example of the flow of processing executed by the suction device 100 according to this modification.
[0118] like Figure 7 As shown, first, the suction device 100 receives a user operation instructing to start heating (step S202 ).
[0119] Next, the suction device 100 turns on the DC / DC converter 163C having an output voltage of 6 V, and starts preliminary heating (step S204 ).
[0120] Next, the suction device 100 determines whether the temperature of the heating unit 121 has reached 100° C. (step S206 ). Before the temperature of the heating unit 121 reaches 100° C., the suction device 100 stands by (step S206 : No).
[0121] When it is determined that the temperature of the heating unit 121 has reached 100° C. (step S206 : Yes), the suction device 100 turns on the DC / DC converter 163B having an output voltage of 7 V (step S208 ).
[0122] Next, the suction device 100 determines whether the temperature of the heating unit 121 has reached 200° C. (step S210 ). Before the temperature of the heating unit 121 reaches 200° C., the suction device 100 stands by (step S210 : No).
[0123] When it is determined that the temperature of the heating unit 121 has reached 200° C. (step S210 : Yes), the suction device 100 turns on the DC / DC converter 163A having an output voltage of 8 V (step S212 ).
[0124] Next, the suction device 100 determines whether the temperature of the heating unit 121 has reached 300° C. (step S214 ). Before the temperature of the heating unit 121 reaches 300° C., the suction device 100 stands by (step S214 : No).
[0125] When it is determined that the temperature of the heating unit 121 has reached 300° C. (step S214 : Yes), the suction device 100 ends the variable time period in the preheating period (step S216 ). Thereafter, the suction device 100 performs temperature control in subsequent periods such as the time-controlled period in the preheating period.
[0126] (2) Second Modification
[0127] Sometimes, the user replaces and continuously heats multiple rod-shaped substrates 150 at short intervals in the suction device 100 to perform inhalation. This usage is also called chain-smoke. In the case of continuous smoking, since the heating starts at a short interval after the last heating is completed, the temperature of the heating part 121 has already risen when the heating starts. Therefore, without implementing any countermeasures, the preparatory heating period, more precisely, the time variable period in the preparatory heating period can become extremely short. If the preparatory heating period is extremely short, the smokeable period will start in a state where the moisture in the rod-shaped substrate 150 has not fully evaporated, and there is a concern that the taste will become rough immediately after the start of the smokeable period. Therefore, in the case of continuous smoking, it is desirable to implement countermeasures so that the preparatory heating period will not become extremely short.
[0128] Therefore, the higher the temperature of the heating unit 121 at the start of heating, the lower the voltage applied to the heating unit 121 per unit time by the control unit 116. In particular, the higher the temperature of the heating unit 121 at the start of heating, the lower the voltage applied to the heating unit 121 per unit time during the preheating period by the control unit 116. With such a configuration, even when continuous smoking is performed, the preheating period can be prevented from being extremely shortened, thereby improving the taste.
[0129] Specifically, with respect to the above-mentioned embodiment, the control unit 116 controls the first switch element 161 so that the higher the temperature of the heating unit 121 at the start of heating, the shorter the time during which the power supply to the heating unit 121 is turned on per unit time. In particular, the control unit 116 controls the first switch element 161 so that the higher the temperature of the heating unit 121 at the start of heating, the lower the duty ratio during the preheating period. For example, when the temperature of the heating unit 121 at the start of heating is less than 50°C, as shown in FIG. Figure 4 As described above, the control unit 116 switches the duty ratio in the order of 40%, 70%, and 100% according to the temperature rise during the preheating period. On the other hand, when the temperature of the heating unit 121 is above 50°C at the start of heating, the control unit 116 may switch the duty ratio in the order of 20%, 50%, and 80% according to the temperature rise during the preheating period. According to such a structure, it is possible to prevent the preheating period from becoming extremely short in the case of continuous smoking, thereby improving the taste.
[0130] In addition, as described in the first modification, the suction device 100 may include a plurality of DC / DC converters 163 having different output voltages, and a second switch element 162 that switches which DC / DC converter 163 is turned on. In this case, the control unit 116 controls the second switch element 162 so that the DC / DC converter 163 with a lower output voltage applies a voltage to the heating unit 121 as the temperature of the heating unit 121 at the start of heating increases. In particular, the control unit 116 controls the second switch element 162 so that the DC / DC converter 163 with a lower output voltage applies a voltage to the heating unit 121 during the preheating period as the temperature of the heating unit 121 at the start of heating increases. For example, when the temperature of the heating unit 121 at the start of heating is less than 50° C., the control unit 116 may turn on the DC / DC converter 163A with an output voltage of 8V during the preheating period. In addition, the control unit 116 may switch the duty ratio in the order of 40%, 70%, and 100% according to the temperature rise. On the other hand, when the temperature of the heating unit 121 is 50°C or higher at the start of heating, the control unit 116 may turn on the DC / DC converter 163B with an output voltage of 7V or the DC / DC converter 163C with an output voltage of 6V during the preheating period. On this basis, the control unit 116 may switch the duty ratio in the order of 40%, 70%, and 100% according to the temperature rise. According to such a structure, the preheating period can be prevented from being extremely short in the case of continuous smoking, and the taste can be improved.
[0131] From another point of view, the higher the temperature of the heating unit 121 at the start of heating, the lower the output target of the control unit 116. For example, when the temperature of the heating unit 121 at the start of heating is less than 50°C, the control unit 116 sets the output target to about 90% of the maximum output of the power supply unit 111. On the other hand, when the temperature of the heating unit 121 at the start of heating is 50°C or more, the control unit 116 may also set the output target to about 70% of the maximum output of the power supply unit 111. According to such a structure, it is possible to prevent the preparatory heating period from becoming extremely short in the case of continuous smoking, thereby improving the taste.
[0132] (3) Others
[0133] 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 such an example. The temperature interval for implementing output control is not limited to 100°C, and an arbitrary temperature interval such as 10°C or 1°C may be set. By shortening the temperature interval for implementing output control, for example, the change in duty ratio 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.
[0134] In the above description, two types of output control are described, namely, a case of controlling the duty ratio and a case of switching the DC / DC converter 163 to be turned on. These two types of control may be performed simultaneously.
[0135] In the above, an example in which the timing of implementing output control is controlled based on the temperature of the heating unit 121 is described, but the present disclosure is not limited to such an example. The control unit 116 may also control the timing of implementing output control based on the elapsed time from the start of heating. For example, the control unit 116 may also implement output control in a cycle of 10 seconds. According to such a 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 may not be limited to 10 seconds, but may be set to an arbitrary time interval such as 5 seconds or 1 second. 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.
[0136] In the above description, the output control is described as a process of increasing the voltage applied to the heating section 121 per unit time as the temperature of the heating section 121 increases. In addition, the output control can also be understood as a process of increasing the average value of the voltage applied to the heating section 121 as the temperature of the heating section 121 increases. Alternatively, the output control can also be understood as a process of increasing the effective value of the voltage applied to the heating section 121 as the temperature of the heating section 121 increases.
[0137] In the above description, specific numerical values are exemplified for 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 other arbitrary numerical values may be applied.
[0138] In the above, an example is described in which the parameter related to the temperature of heating the aerosol source specified in the heating curve is the temperature of the heating unit 121, but the present disclosure is not limited to such an example. As a parameter related to the temperature of heating the 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 performed by 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. In addition, each program is read into RAM and executed by a processing circuit such as a CPU when it is executed based on a computer that controls each device described in this specification. The above-mentioned recording medium is, for example, a magnetic disk, an optical disk, a magnetic optical disk, a flash memory, etc. In addition, the above-mentioned computer program can also be distributed, for example, via a network without using a recording medium. In addition, the above-mentioned computer can also be a dedicated integrated circuit such as an ASIC, a general-purpose processor that performs functions by reading in a software program, or a computer on a server used in cloud computing, etc. In addition, the series of processing performed by each device described in this specification can also be distributed by multiple computers.
[0140] In addition, the processes described in the flowcharts and sequence diagrams in this specification may not necessarily be performed in the order shown in the diagrams. Several process steps may also be performed in parallel. In addition, additional process steps may be used, or some process steps may 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 heating unit that heats the aerosol source contained in the substrate using the power supplied from the power supply unit; and
[0146] a control unit for controlling the operation of the heating unit,
[0147] The control unit performs output control for increasing a voltage applied to the heating unit per unit time as the temperature of the heating unit increases. (2)
[0149] The aerosol generating system as described in (1) above, wherein:
[0150] The aerosol generating system further includes a first switch element for switching on / off the power supply to the heating unit.
[0151] The control unit performs, as the output control, an operation of controlling the first switching element so that the time during which the power supply to the heating unit is turned on per unit time becomes longer as the temperature of the heating unit rises. (3)
[0153] The aerosol generating system as described in (1) above, wherein:
[0154] The aerosol generating system further comprises:
[0155] a plurality of transformers disposed between the power supply unit and the heating unit, for converting a voltage applied from the power supply unit and applying the voltage to the heating unit; and
[0156] A second switching element switches one of the plurality of transformers that applies a voltage to the heating unit,
[0157] The output voltages of the plurality of transformers are different.
[0158] The control unit performs, as the output control, an operation of controlling the second switching element so that the transformer having a higher output voltage applies a voltage to the heating unit as the temperature of the heating unit rises. (4)
[0160] The aerosol generating system according to any one of (1) to (3) above, wherein:
[0161] The control unit performs the output control while the temperature of the heating unit continues to rise after the start of heating. (5)
[0163] The aerosol generating system according to any one of (1) to (4) above, wherein:
[0164] The heating unit is a resistance heating element whose resistance changes according to temperature.
[0165] The control unit performs the output control so that the output of the heating unit becomes a predetermined target value. (6)
[0167] An aerosol generating system as described in (5) above, wherein:
[0168] The control unit sets the target value based on a maximum output of the power supply unit. (7)
[0170] The aerosol generating system according to any one of (1) to (6) above, wherein:
[0171] The control unit reduces the voltage applied to the heating unit per unit time as the temperature of the heating unit at the start of heating increases. (8)
[0173] An aerosol generating system as described in (2) above, wherein:
[0174] The control unit controls the first switching element so that the higher the temperature of the heating unit at the start of heating, the shorter the time during which the power supply to the heating unit is turned on per unit time. (9)
[0176] An aerosol generating system as described in (3) above, wherein:
[0177] The control unit controls the second switching element so that the transformer whose output voltage is lower applies a voltage to the heating unit as the temperature of the heating unit at the start of heating is higher. (10)
[0179] An aerosol generating system as described in (6) above, wherein:
[0180] The control unit lowers the target value as the temperature of the heating unit at the start of heating increases. (11)
[0182] The aerosol generating system according to any one of (1) to (10) above, wherein:
[0183] The control unit controls a timing for performing the output control based on a value corresponding to a temperature of the heating unit. (12)
[0185] The aerosol generating system according to any one of (1) to (10) above, wherein:
[0186] The control unit controls the timing for performing the output control based on an elapsed time from the start of heating. (13)
[0188] The aerosol generating system according to any one of (1) to (12) above, wherein:
[0189] The aerosol generating system further includes the substrate. (14)
[0191] A control method is a control method executed by a computer controlling an attraction device,
[0192] The suction device comprises:
[0193] Power supply unit; and
[0194] a heating unit that heats the aerosol source contained in the substrate using the power supplied from the power supply unit,
[0195] The control method includes performing output control in which a voltage applied to the heating unit per unit time is increased as the temperature of the heating unit increases. (15)
[0197] A program is a program executed by a computer controlling an attraction device,
[0198] The suction device comprises:
[0199] Power supply unit; and
[0200] a heating unit that heats the aerosol source contained in the substrate using the power supplied from the power supply unit,
[0201] The program causes the computer to execute:
[0202] Output control is performed such that as the temperature of the heating unit increases, the voltage applied to the heating unit per unit time increases.
[0203] Description of Reference Numerals
[0204] 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 substrate; 151: substrate unit; 152: suction mouth; 161: first switching element; 162: second switching element; 163: DC / DC converter.
Claims
1. An aerosol generating system comprising: Power supply department; a heating unit that heats the aerosol source contained in the substrate using the power supplied from the power supply unit; and a control unit for controlling the operation of the heating unit, The control unit performs output control for increasing a voltage applied to the heating unit per unit time as the temperature of the heating unit increases.
2. An aerosol generating system according to claim 1, wherein: The aerosol generating system further includes a first switch element for switching on / off the power supply to the heating unit. The control unit performs, as the output control, an operation of controlling the first switching element so that the time during which the power supply to the heating unit is turned on per unit time becomes longer as the temperature of the heating unit rises.
3. An aerosol generating system according to claim 1, wherein: The aerosol generating system further comprises: a plurality of transformers, arranged between the power supply unit and the heating unit, for converting a voltage applied from the power supply unit and applying the voltage to the heating unit; as well as A second switching element switches one of the plurality of transformers that applies a voltage to the heating unit, The output voltages of the plurality of transformers are different. The control unit performs, as the output control, an operation of controlling the second switching element so that the transformer having a higher output voltage applies a voltage to the heating unit as the temperature of the heating unit rises.
4. The aerosol generating system according to any one of claims 1 to 3, wherein: The control unit performs the output control while the temperature of the heating unit continues to rise after the start of heating.
5. The aerosol generating system according to any one of claims 1 to 4, wherein: The heating unit is a resistance heating element whose resistance changes according to temperature. The control unit performs the output control so that the output of the heating unit becomes a predetermined target value.
6. An aerosol generating system according to claim 5, wherein: The control unit sets the target value based on a maximum output of the power supply unit.
7. The aerosol generating system according to any one of claims 1 to 6, wherein: The control unit reduces the voltage applied to the heating unit per unit time as the temperature of the heating unit at the start of heating increases.
8. An aerosol generating system according to claim 2, wherein: The control unit controls the first switching element so that the higher the temperature of the heating unit at the start of heating, the shorter the time during which the power supply to the heating unit is turned on per unit time.
9. An aerosol generating system according to claim 3, wherein: The control unit controls the second switching element so that the transformer whose output voltage is lower applies a voltage to the heating unit as the temperature of the heating unit at the start of heating is higher.
10. An aerosol generating system according to claim 6, wherein: The control unit lowers the target value as the temperature of the heating unit at the start of heating increases.
11. The aerosol generating system according to any one of claims 1 to 10, wherein: The control unit controls a timing for performing the output control based on a value corresponding to a temperature of the heating unit.
12. The aerosol generating system according to any one of claims 1 to 10, wherein: The control unit controls the timing for performing the output control based on an elapsed time from 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 executed by a computer controlling an attraction device, The suction device comprises: Power supply unit; and The heating unit heats the aerosol source contained in the substrate using the power supplied from the power supply unit. The control method includes performing output control of increasing a voltage applied to the heating unit per unit time as the temperature of the heating unit increases.
15. A program executed by a computer controlling an attraction device, The suction device comprises: Power supply unit; and The heating unit heats the aerosol source contained in the substrate using the power supplied from the power supply unit. The program causes the computer to execute: Output control is performed such that as the temperature of the heating unit increases, the voltage applied to the heating unit per unit time increases.