Heating non-combustion device and heating control method thereof

Abstract

The invention discloses a heat-not-burn device and a heating control method thereof.The heating control method comprises the steps that when a heating starting signal is received, a heating assembly is controlled to heat an aerosol-forming substrate, so that the aerosol-forming substrate is heated to a first temperature from an initial temperature; when it is detected that the suction action starts, the heating assembly is controlled to heat the aerosol-forming substrate so that the aerosol-forming substrate can be heated to a third temperature from the current temperature, and the third temperature is larger than or equal to the first temperature; when it is detected that the smoking action is finished, the heating assembly is controlled to heat the aerosol-forming substrate so that the aerosol-forming substrate can be cooled to a fourth temperature from the current temperature, and the fourth temperature is smaller than the third temperature. By implementing the technical scheme of the invention, the aerosol-forming substrate cannot be excessively carbonized, and the loss is small.

Description

Technical Field

[0001] The present invention relates to the atomization field, and particularly to a heat-not-burn device and a heating control method thereof. Background Art

[0002] Existing heat-not-burn devices generally need to preset (set during production) a temperature control curve. When a user uses the heat-not-burn device, the heating component is controlled to heat the aerosol-forming substrate according to the temperature control curve. In this way, during the heating process, regardless of whether the user sucks or not, heating needs to be carried out according to the fixed temperature values at the fixed stages of the temperature control curve. Therefore, not only will unnecessary energy be wasted, but the temperature of the outer shell of the heat-not-burn device will be too high during continuous sucking. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a heat-not-burn device and a heating control method thereof in view of the technical defect of unnecessary energy waste existing in the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is to construct a heating control method for a heat-not-burn device, where the heat-not-burn device includes a heating component, and the heating component is a microwave heating component or a laser heating component, including:

[0005] Preheating step: When a start heating signal is received, control the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate rises from an initial temperature to a first temperature;

[0006] Heating step: When a sucking action start is detected, control the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate rises from a current temperature to a third temperature, where the third temperature is greater than or equal to the first temperature;

[0007] Cooling step: When a sucking action end is detected, control the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate drops from the current temperature to a fourth temperature, where the fourth temperature is less than the third temperature.

[0008] Preferably, the heating step further includes:

[0009] If the first sucking action is not detected within a preset time, control the heating component to drop from the first temperature to a second temperature, where the second temperature is less than or equal to the first temperature.

[0010] Preferably, the fourth temperature is greater than or equal to the second temperature.

[0011] Preferably, the heating step further includes:

[0012] Determining the third temperature according to the current total number of puffing times, wherein the third temperature is positively correlated with the current total number of puffing times.

[0013] Preferably, the cooling step further includes:

[0014] Determining the fourth temperature according to the current total number of puffing times, wherein the fourth temperature is positively correlated with the current total number of puffing times.

[0015] Preferably, the difference between the fourth temperature and the third temperature is 5 to 10 degrees; and / or, the difference between the second temperature and the first temperature is 5 to 10 degrees.

[0016] Preferably, the heating step includes:

[0017] Temperature rising sub-step: When detecting the start of a puffing action, controlling the heating component to heat the aerosol-forming substrate at a first preset power within a first time period;

[0018] Temperature control sub-step: After the end of the first time period, if it is determined that the current temperature is lower than the third temperature, controlling the heating component to heat at a second preset power within a second time period; if it is determined that the current temperature is higher than the third temperature, controlling the heating component to stop heating within a third time period; wherein the second preset power is less than the first preset power.

[0019] The present invention also constructs a heat-not-burn device, including:

[0020] A heating component for heating the aerosol-forming substrate, and the heating component is a microwave heating component or a laser heating component;

[0021] A power supply for supplying power to the heating component;

[0022] A puffing detection component for detecting whether a puffing action occurs;

[0023] A control component, and the control component is configured to:

[0024] Preheating step: When receiving a start heating signal, controlling the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate rises from an initial temperature to a first temperature;

[0025] Heating step: When detecting the start of a puffing action, controlling the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate rises from the current temperature to the third temperature, wherein the third temperature is greater than or equal to the first temperature;

[0026] Cooling step: When it is detected that the suction action ends, control the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate drops from the current temperature to a fourth temperature, where the fourth temperature is lower than the third temperature.

[0027] Preferably, the heating component is a microwave heating component, and the microwave heating component includes:

[0028] An outer conductor unit, and the outer conductor unit includes a closed end and an open end opposite to the closed end;

[0029] A receiving cavity disposed in the outer conductor unit for receiving the aerosol-forming substrate;

[0030] A microwave source unit for generating microwave signals;

[0031] A microwave feeding unit for feeding the microwave signals generated by the microwave source unit;

[0032] An inner conductor unit, and the inner conductor unit includes a microwave matching structure and a microwave radiation structure coupled to the microwave matching structure. Wherein, the bottom of the microwave matching structure is connected to the closed end of the outer conductor unit and is in ohmic contact with the end wall of the closed end to form a short circuit end of the microwave heating component; one end of the microwave radiation structure is coupled to the top of the microwave matching structure, and the other end of the microwave radiation structure is located in the receiving cavity to form an open circuit end of the microwave heating component.

[0033] Preferably, the heating component is a laser heating component, and the laser heating component includes:

[0034] A circuit board and a laser chip mounted on the circuit board, and the laser chip is used to emit laser to the aerosol-forming substrate.

[0035] Preferably, the control component is configured such that: the heating step includes a temperature rising sub-step and a temperature controlling sub-step, where

[0036] Temperature rising sub-step: When it is detected that the suction action starts, control the heating component to heat the aerosol-forming substrate at a first preset power within a first time period;

[0037] Temperature controlling sub-step: After the first time period ends, continuously perform: if it is determined that the current temperature is lower than the third temperature, control the heating component to heat at a second preset power within a second time period; if it is determined that the current temperature is higher than the third temperature, control the heating component to stop heating within a third time period; where the second preset power is less than the first preset power.

[0038] Preferably, the suction detection component includes:

[0039] A first pressure sensor for detecting whether a suction action occurs by detecting the air pressure in the airway.

[0040] Preferably, the suction detection assembly includes:

[0041] A second pressure sensor for detecting whether a suction action occurs by detecting the air pressure in the airway and detecting the suction force when the suction action occurs;

[0042] Moreover, the control assembly is further configured to:

[0043] Obtain the first time period according to the suction force, wherein the first time period is positively correlated with the suction force.

[0044] Through the technical solution of the present invention, during the heating process of the heat-not-burn device, only when the user sucks, the heating component will perform high-power heating, so that the aerosol-forming matrix reaches a relatively high temperature (the third temperature), and when the user does not suck, the aerosol-forming matrix is maintained at a relatively low temperature (the fourth temperature). In this way, the aerosol-forming matrix will not undergo excessive carbonization, the loss is small, the temperature of the outer shell will not be too high, and the energy consumption of the device can be reduced. Moreover, since the heating component is a microwave heating component or a laser heating component, the preheating can be completed in a relatively short time (for example, 2 to 3 seconds), and each time when sucking, the temperature of the aerosol-forming matrix can be quickly increased to achieve quick smoke output. Therefore, this heating method can be adapted to the application scenarios of quick detection of suction and then quick response. In addition, since there is no need to perform heating control according to a preset temperature control curve, the user can suck randomly according to his own sucking frequency, and there is no need to limit the user to complete sucking within a specific time, which improves the user experience. Description of the Drawings

[0045] In order to more clearly illustrate the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0046] Figure 1 is a flowchart of the first embodiment of the heating control method of the heat-not-burn device of the present invention;

[0047] Figure 2 is a schematic diagram of the temperature control curve in one embodiment of the present invention;

[0048] Figure 3 is a schematic diagram of the temperature control curve in another embodiment of the present invention;

[0049] Figure 4 It is a schematic diagram of the temperature control curve and the temperature detection curve in an embodiment of the present invention;

[0050] Figure 5 It is the logical structure diagram of the first embodiment of the heat-not-burn device of the present invention;

[0051] Figure 6A 、 Figure 6B It is the structure diagram of the first embodiment of the heat-not-burn device of the present invention;

[0052] Figure 7 It is the circuit diagram of the MCU and the air pressure sensor of the heat-not-burn device in an embodiment of the present invention. Specific embodiments

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0054] Figure 1 It is the flowchart of the first embodiment of the heating control method of the heat-not-burn device of the present invention. The heating control method of this embodiment is applied to the control component of the heat-not-burn device. The heat-not-burn device further includes a heating component, a power supply, a suction detection component, etc. Among them, the power supply provides power supply to the heating component; the suction detection component is used to detect whether a suction action occurs; the heating component is used to heat the aerosol-forming substrate. Moreover, the heating component can have various forms. For example, it can be: a heating sheet, a heating needle, a heating rod, a heating wire or a heating filament. Alternatively, the heating component can also be a combination of two or more different forms of heating devices. In addition, the positional relationship between the heating component and the aerosol-forming substrate can have various forms. For example, it can be: the heating component is at least partially arranged at the center of the aerosol-forming substrate, that is, the heating method is central heating; the heating component is arranged at the end of the aerosol-forming substrate, that is, the heating method is end heating; the heating component is arranged on the circumference of the aerosol-forming substrate, that is, the heating method is circumferential heating.

[0055] As Figure 1 shown, the heating control method of this embodiment includes the following steps:

[0056] Preheating step S10: When receiving the start heating signal, control the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate rises from the initial temperature to the first temperature;

[0057] In this step, the start heating signal can be triggered by long-pressing the button on the heat-not-burn device, or the start heating signal can be automatically triggered when it is detected that the aerosol-forming substrate is inserted. Moreover, since the heating component is a microwave heating component or a laser heating component, and the energy radiated by the microwave or laser is relatively high, the aerosol-forming substrate can be instantaneously heated up. For example, when the microwave heating method is adopted, the heating component can make the aerosol-forming substrate rise from 25 °C (the initial temperature is room temperature) to 251 °C within 2.3 seconds, and the average temperature rise per unit time is: (251 - 25) / 2.3 = 98.26 °C / second; for another example, when using the microwave method to heat a Marlboro cigarette with a tobacco segment weight of 0.28 g, continuous heating with 20 W of energy for 2 seconds can make the tobacco segment of the cigarette rise from room temperature of 25 °C to above 260 °C. Therefore, this heating method can complete preheating within 2 to 3 seconds. Compared with the existing resistance or electromagnetic heating methods that require about 20 seconds to complete preheating, it greatly saves the preheating time, reduces the waiting time of users, and improves the user experience.

[0058] Heating step S20: When it is detected that the sucking action starts, control the heating component to heat the aerosol-forming substrate by using microwave or laser, so that the aerosol-forming substrate rises from the current temperature to a third temperature, wherein the third temperature is greater than or equal to the first temperature;

[0059] In this step, the sucking action of the user can be detected by the sucking detection component. Moreover, when it is detected that the sucking action starts, by controlling the heating component, the aerosol-forming substrate is heated from the current temperature to the third temperature. In a specific embodiment, the third temperature may be equal to the first temperature, and in another embodiment, the third temperature may also be greater than the first temperature.

[0060] Cooling step S30: When it is detected that the sucking action ends, control the heating component to heat the aerosol-forming substrate by using microwave or laser, so that the aerosol-forming substrate drops from the current temperature to a fourth temperature, wherein the fourth temperature is less than the third temperature. Preferably, the difference between the fourth temperature and the third temperature is 5 to 10 degrees.

[0061] In this step, when it is detected that the sucking action ends, by controlling the heating component, the aerosol-forming substrate is dropped from the current temperature to the fourth temperature. In one embodiment, when it is detected that the sucking action ends, the heating of the heating component can be stopped first, so that the temperature of the aerosol-forming substrate drops rapidly. When it drops to the fourth temperature, then start to control the heating component to heat the aerosol-forming substrate to maintain the aerosol-forming substrate at the fourth temperature. In another embodiment, when it is detected that the sucking action ends, the power of the heating component can be gradually reduced to make the temperature of the aerosol-forming substrate slowly drop to the fourth temperature.

[0062] In this embodiment, during the preheating stage, the aerosol-forming substrate is heated from the initial temperature to the first temperature by controlling the heating component; during the heating stage, when the detection of the start of the suction action is detected, the aerosol-forming substrate is heated from the current temperature to the third temperature (the third temperature is greater than or equal to the first temperature) by controlling the heating component, and when the detection of the end of the suction action is detected, the aerosol-forming substrate is cooled from the current temperature to the fourth temperature (the fourth temperature is less than or equal to the third temperature) by controlling the heating component. That is to say, during the heating process of the heat-not-burn device, only when the user sucks, the heating component will perform high-power heating to raise the aerosol-forming substrate to a relatively high temperature (the third temperature), while when the user does not suck, the aerosol-forming substrate is maintained at a relatively low temperature (the fourth temperature). In this way, the aerosol-forming substrate will not be excessively carbonized, the loss is small, the temperature of the outer shell will not be too high, and the energy consumption of the device can be reduced. Moreover, since the heating component is a microwave heating component or a laser heating component, the preheating can be completed in a relatively short time (for example, 2 to 3 seconds), and during each suction, the temperature of the aerosol-forming substrate can be quickly increased to achieve rapid smoke generation. Therefore, this heating method can be adapted to the application scenarios of rapid detection of suction and then rapid response. In addition, since there is no need to perform heating control according to a preset temperature control curve, the user can suck randomly according to his own suction frequency, and there is no need to limit the user to complete the suction within a specific time, improving the user experience.

[0063] Further, in an alternative embodiment, the heating step S20 further includes:

[0064] If the first suction action is not detected within the preset time, the heating component is controlled to decrease from the first temperature to the second temperature, where the second temperature is less than or equal to the first temperature.

[0065] In this embodiment, since the efficiency of the microwave or laser generating device is relatively low (for example, less than 90%), if the user does not start sucking in time after heating to the first temperature during the preheating stage and still maintains at this relatively high temperature, the aerosol-forming substrate will be consumed too quickly, and the energy consumption of the heat-not-burn device will also be too high, resulting in consequences such as the heating of the outer shell and affecting the user experience. Therefore, after reaching the first temperature, the heating of the aerosol-forming substrate is controlled by the heating component to decrease the temperature of the aerosol-forming substrate from the first temperature to the second temperature until the user performs the first suction.

[0066] Further, in an alternative embodiment, the difference between the second temperature and the first temperature is 5 to 10 degrees; and / or, the difference between the fourth temperature and the third temperature is 5 to 10 degrees. In this embodiment, since the heating method of microwave or laser has the characteristic of small thermal inertia compared with the heating method of resistance or electromagnetism, after the aerosol-forming substrate loses the energy injection of microwave or laser, it will cool down rapidly. In order to keep the tobacco at a relatively high temperature while not consuming too much energy, the second temperature can be set to a value slightly lower than the first temperature, and the difference between the two is preferably 5 to 10 degrees. For example, if the first temperature is 315 degrees, the second temperature is 305 degrees. Similarly, the fourth temperature can be set to a value slightly lower than the third temperature, and the difference between the two is preferably 5 to 10 degrees. For example, if the third temperature is 315 degrees, the fourth temperature is 305 degrees.

[0067] Further, in an alternative embodiment, the fourth temperature is greater than or equal to the second temperature.

[0068] Further, in an alternative embodiment, the first temperature is equal to the third temperature, and the second temperature is equal to the fourth temperature.

[0069] In a specific embodiment, as Figure 2 shown, the first temperature and the third temperature are 315 degrees respectively, and the second temperature and the fourth temperature are 305 degrees respectively. Combining Figure 2 , when the start heating signal is received, the aerosol-forming substrate is heated from room temperature to the first temperature (315 degrees) in the 0 - time0 period (e.g., 2s), and maintained for a period of time (time0 - time1), for example, maintained for 1s. That is, if no first puffing action is detected within the preset time (e.g., 1s) after reaching the first temperature, then at time1, it drops from the first temperature to the second temperature (305 degrees) and is maintained until the first puffing action F1 is detected at time2. At time2, the aerosol-forming substrate is heated up to the third temperature (315 degrees) again until the puffing action ends at time3. At time3, the aerosol-forming substrate drops from the third temperature (315 degrees) to the fourth temperature (305 degrees) until the second puffing action F2 is detected, and so on in a cycle.

[0070] Further, in an alternative embodiment, the heating step S20 further includes:

[0071] Determining the third temperature according to the current total number of puffs, wherein the third temperature is positively correlated with the current total number of puffs; and / or,

[0072] The cooling step S30 further includes:

[0073] Determine the fourth temperature according to the current total number of puffings, wherein the fourth temperature is positively correlated with the current total number of puffings.

[0074] In this embodiment, the third temperature and the fourth temperature corresponding to each puffing are different, and increase with the increase of the total number of puffings.

[0075] In a specific embodiment, as Figure 3 shown, the first temperature is 315 degrees, the second temperature is 305 degrees, the third temperature corresponding to the first puffing is 317 degrees, and the fourth temperature corresponding to the first puffing is 307 degrees; the third temperature corresponding to the second puffing is 319 degrees, and the fourth temperature corresponding to the second puffing is 309 degrees;... and so on. Combining Figure 3 , when a start heating signal is received, the aerosol-forming substrate is heated from room temperature to the first temperature (315 degrees) in the 0-time0 period (for example, 2 s), and maintained for a period of time (time0-time1), for example, maintained for 1 s, that is, if no first puffing action is detected within a preset time (for example, 1 s) after reaching the first temperature, then at time1, it drops from the first temperature to the second temperature (305 degrees) and is maintained until the first puffing action F1 is detected at time2. At time2, the aerosol-forming substrate is heated to the third temperature (317 degrees) corresponding to the first puffing until the first puffing action ends at time3. At time3, the aerosol-forming substrate drops from the third temperature (317 degrees) to the fourth temperature (307 degrees) corresponding to the first puffing until the second puffing action F2 is detected, and so on in a cycle.

[0076] Of course, in other embodiments, during the entire suction process, each suction corresponds to a third temperature and a fourth temperature. Therefore, during the entire suction process, there are multiple third temperatures and multiple fourth temperatures. Moreover, the third temperature corresponding to each suction may also be unrelated to the current total number of suctions. Correspondingly, the fourth temperature corresponding to each suction may also be unrelated to the current total number of suctions. That is to say, among the multiple third temperatures during the entire suction process, at least some of the third temperature values are equal to the first temperature, and some of the other third temperature values are greater than the first temperature. Correspondingly, among the multiple fourth temperatures during the entire suction process, at least some of the fourth temperature values are equal to the second temperature, and some of the other fourth temperature values are greater than the second temperature. For example, during the entire suction process, the user takes a total of thirteen puffs. The third temperatures corresponding to the first puff to the thirteenth puff are respectively: 315 degrees, 317 degrees, 319 degrees, 321 degrees, 319 degrees, 317 degrees, 315 degrees, 317 degrees, 319 degrees, 321 degrees, 319 degrees, 317 degrees, 315 degrees; the fourth temperatures corresponding to the first puff to the thirteenth puff are respectively: 305 degrees, 307 degrees, 309 degrees, 321 degrees, 309 degrees, 307 degrees, 305 degrees, 307 degrees, 309 degrees, 321 degrees, 309 degrees, 307 degrees, 305 degrees.

[0077] Furthermore, in an alternative embodiment, the heat-not-burn component further includes a temperature measurement component. It should be noted here that the temperature measurement component actually measures the temperature of the heating component, preferably the temperature of the outer wall of the heating component. By controlling the temperature of the heating component, the heating temperature of the aerosol-forming substrate is controlled. The temperature of the heating component and the aerosol-forming substrate is positively correlated, but not necessarily exactly the same. That is to say, in some applications, the temperature of the heating component can be used to represent the temperature of the aerosol-forming substrate. Moreover, the heating step S20 includes:

[0078] A temperature-rising sub-step: when detecting the start of a suction action, controlling the heating component to heat the aerosol-forming substrate at a first preset power within a first time period;

[0079] Temperature control sub-step: After the end of the first time period, if it is determined that the current temperature is lower than the third temperature, control the heating component to heat at a second preset power within the second time period; if it is determined that the current temperature is higher than the third temperature, control the heating component to stop heating within the third time period; wherein, the second preset power is less than the first preset power, and the second time period and the third time period are preferably the same, although they can also be different. Additionally, it should be noted that since the remaining time after subtracting the time of constant power heating (the first time period, for example 350 ms) from the duration of a single puffing action (for example 1 - 2 s) is much greater than the temperature detection period (for example 20 - 30 ms), therefore, in the temperature control sub-step, temperature judgment and power adjustment can be performed in multiple cycles. For example, if the duration of a single puffing action of a certain user is 1 s, the first time period is 350 ms, and the corresponding remaining time is 650 ms, and the temperature detection period is 30 ms, then approximately 22 times of temperature judgment and power adjustment are performed in the temperature control sub-step.

[0080] In this embodiment, when the control component controls the heating component, since it first performs constant power (first preset power) heating for a period of time (the first time period), and then periodically performs temperature judgment and power adjustment, therefore, compared with the traditional PID control scheme, in the PID control scheme, the differentiator is sensitive to the high-frequency signals generated by the microwave heating component or the laser heating component and is prone to amplifying noise signals. Thus, the control scheme of this embodiment can reduce the noise of the heat-not-burn device.

[0081] In a specific embodiment, the first time period is, for example, 350 ms, the second time period and the third time period are, for example, 30 ms respectively, the first preset power can be the maximum output power, for example, 20 W, and the second preset power is, for example, 10 W. In this way, when a puffing action is detected to start, first control the heating component to heat at a constant power of 20 W for 350 ms to raise the temperature of the aerosol-forming matrix. Then start to detect the temperature every 30 ms. If the current temperature is lower than the third temperature (puffing temperature), control the heating component to heat at a constant power of 10 W for 30 ms; if the current temperature is higher than the third temperature, stop heating for 30 ms. Repeat the temperature detection and power adjustment in this way until the puffing action is detected to stop.

[0082] In a specific embodiment, the first time period is, for example, 450 ms, the second time period is, for example, 30 ms, the third time period is, for example, 20 ms, the first preset power may be the maximum output power, for example, 20 W, and the second preset power is, for example, 10 W. Thus, when the detection of the suction action starts, first control the heating component to heat at a constant power of 20 W for 450 ms to raise the temperature of the aerosol-forming substrate. Then start to detect the temperature. If the current temperature is lower than the third temperature (suction temperature), control the heating component to heat at a constant power of 10 W for 30 ms; if the current temperature is higher than the third temperature, stop heating for 20 ms. Repeat the temperature detection and power adjustment in this cycle until the detection of the suction action stops.

[0083] In a specific embodiment, as Figure 4 shown, curve L3 is the power curve output to the heating component, curve L1 is the temperature detection curve obtained by the temperature measurement component, and curve L2 is the set temperature target curve (i.e., the temperature control curve). Moreover, this temperature target curve L2 is not pre-set in the processor of the heat-not-burn device, but is a curve related to the actual suction frequency of the user. Therefore, in the same heat-not-burn device, the temperature target curves corresponding to the user's suction at different suction frequencies at different times may not be the same. As Figure 4 shown, in the heating control process, through the temperature-raising sub-step and the temperature-control sub-step, the temperature detection curve L1 can be made to approach the temperature target curve.

[0084] Further, in an alternative embodiment, the heating control method of the present invention further includes: when the aerosol-forming substrate rises from the initial temperature to the first temperature, output a reminder message. For example, the reminder message can be output by means of sound, light, vibration, etc. In this embodiment, when the aerosol-forming substrate reaches the first temperature, a reminder message can be output to remind the user that the preparation work for the preheating stage has been completed and suction can be carried out.

[0085] Further, in an alternative embodiment, the heating control method of the present invention further includes:

[0086] When it is determined that a preset stop condition is satisfied, stop the heating control of the heating component, where the preset stop condition includes at least one of the following:

[0087] The total number of suction times reaches a preset number, and the preset number is, for example, 10 - 16 times;

[0088] The cumulative heating time reaches a preset time, and the preset time is, for example, 4 - 60 minutes;

[0089] Receive a stop instruction input by the user.

[0090] In this embodiment, when the total number of puffs reaches a specified number, or the entire puff time exceeds a predetermined time, or the user inputs a stop command (for example, long pressing a body button), the heating control of the heating component can be stopped.

[0091] Figure 5 is a logical structure diagram of the first embodiment of the heat-not-burn device of the present invention. The heat-not-burn device of this embodiment includes a heating component 1, a control component 2, a puff detection component 3 and a power supply 4, wherein the heating component 1 is used to heat the aerosol-forming matrix, and the heating component 1 can be a microwave heating component or a laser heating component; the power supply 4 is used to provide power to the heating component 1; the puff detection component 3 is used to detect whether a puff action occurs; the control component 2 is configured as follows:

[0092] Preheating step: upon receiving a heating start signal, controlling the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate is raised from an initial temperature to a first temperature;

[0093] Heating step: when the start of the puffing action is detected, controlling the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate is raised from the current temperature to a third temperature, wherein the third temperature is greater than or equal to the first temperature;

[0094] Cooling step: when the end of the puffing action is detected, the heating component is controlled to heat the aerosol-forming substrate, so that the aerosol-forming substrate is cooled from the current temperature to a fourth temperature, wherein the fourth temperature is lower than the third temperature.

[0095] Further, in an optional embodiment, the control component is configured to: in the heating step, if the first puffing action is not detected within a preset time, control the heating component to drop from the first temperature to a second temperature, wherein the second temperature is less than or equal to the first temperature.

[0096] Further, in an optional embodiment, the control component is configured such that: the fourth temperature is greater than or equal to the second temperature.

[0097] Further, in an optional embodiment, the control component is configured such that: the difference between the fourth temperature and the third temperature is 5 to 10 degrees; and / or the difference between the second temperature and the first temperature is 5 to 10 degrees.

[0098] Further, in an alternative embodiment, the control component is configured to: in the heating step, determine the third temperature according to the current total number of puffs, wherein the third temperature is positively correlated with the current total number of puffs; in the cooling step, determine the fourth temperature according to the current total number of puffs, wherein the fourth temperature is positively correlated with the current total number of puffs.

[0099] Further, in an alternative embodiment, the control component is configured to: the heating step includes a temperature rising sub-step and a temperature controlling sub-step, wherein

[0100] Temperature rising sub-step: when detecting the start of a puffing action, control the heating component to heat the aerosol-forming substrate at a first preset power within a first time period;

[0101] Temperature controlling sub-step: after the end of the first time period, continuously perform: if it is determined that the current temperature is lower than the third temperature, control the heating component to heat at a second preset power within a second time period; if it is determined that the current temperature is higher than the third temperature, control the heating component to stop heating within a third time period; wherein the second preset power is less than the first preset power. The second time period and the third time period may be the same or different. Additionally, it should be noted that since the remaining time after removing the constant power heating time (the first time period, for example, 350 ms) from the duration of a single puffing action (e.g., 1 - 2 s) is much longer than the temperature detection period (e.g., 20 - 30 ms), in the temperature controlling sub-step, temperature judgment and power adjustment can be cycled multiple times. For example, if the duration of a single puffing action of a certain user is 1 s, the first time period is 350 ms, the corresponding remaining time is 650 ms, and the temperature detection period is 30 ms, then approximately 22 times of temperature judgment and power adjustment are performed in the temperature controlling sub-step.

[0102] In this embodiment, when the control component controls the heating component, since it first performs constant power (the first preset power) heating for a period of time (the first time period), and then periodically performs temperature judgment and power adjustment, compared with the traditional PID control scheme, in the PID control scheme, the differentiator is sensitive to the high-frequency signals generated by the microwave heating component or the laser heating component and is prone to amplifying noise signals. Therefore, the control scheme of this embodiment can reduce the noise of the heat-not-burn device. Further, in an alternative embodiment, the heating component 1 is a microwave heating component, refer to Figure 6A 、 6B, in the microwave heating component 1 of this embodiment, a microwave field acting on the aerosol-forming substrate 200 is formed within its own cavity 113 to achieve microwave heating. Among them, the aerosol-forming substrate 200 is a solid aerosol-forming substrate such as a processed plant leaf product. It can be understood that in some other embodiments, the aerosol-forming substrate 200 can also be a liquid aerosol-forming substrate.

[0103] As Figure 6A shown, in some embodiments, the overall shape of the microwave heating component 1 is generally cylindrical. Of course, the microwave heating component 1 is not limited to a cylindrical shape and can also be in other shapes such as a square column or an elliptical column. Combining Figure 6B , the microwave heating component 1 may include an outer conductor unit 11, an inner conductor unit 12, a receiving seat 13, a microwave generating unit (not shown), and a microwave feeding unit 14.

[0104] The outer conductor unit 11 has a closed end 111 and an open end 112 opposite to the closed end 111, and can define a semi-closed cavity 113. The inner wall surface of the cavity 113 is electrically conductive. The inner conductor unit 12 includes a microwave matching structure 121 and a microwave radiation structure 122 coupled to the microwave matching structure 121. The bottom of the microwave matching structure 121 is connected to the closed end 111 of the outer conductor unit 11 and is in ohmic contact with the end wall of the closed end 111 to form the short circuit end of the microwave heating component 1. One end of the microwave radiation structure 122 is coupled to the top of the microwave matching structure 121, and the other end of the microwave radiation structure 122 is located in the cavity 113 but is not in direct contact with the outer conductor unit 11 to form the open circuit end of the microwave heating component 1. The microwave feeding unit 14 is detachably mounted on the outer conductor unit 11 for feeding the microwave generated by the microwave generating unit into the cavity 113. The receiving seat 13 is fixedly or detachably mounted at the open end 112 of the outer conductor unit 11, and it defines a receiving cavity 130 for receiving the aerosol-forming substrate 200. The end of the microwave radiation structure 122 away from the microwave matching structure 121 extends and inserts into the receiving cavity 130. The receiving seat 13 may include a receiving portion and a fixing portion integrally connected to the receiving portion. The receiving portion may be cylindrical, and its outer diameter is smaller than the inner diameter of the outer conductor unit 11. It is installed in the cavity 113 and defines an axial receiving cavity 130 for receiving the aerosol-forming substrate 200. Moreover, the bottom of the receiving portion is a closed design and has a bottom wall surface 1311 for supporting the aerosol-forming substrate 200.

[0105] Understandably, the aerosol-forming substrate 200 can be partially / fully inserted into the receiving cavity 130. At this time, a part of the microwave radiation structure 122 is inserted inside the aerosol-forming substrate 200. When the microwave generating unit feeds microwaves through the microwave feeding unit 14, a microwave energy field can be formed around the microwave radiation structure 122 to heat the inside of the aerosol-forming substrate 200. In cooperation with the user's sucking action, driving the airflow, the aerosol formed by mixing air and the medium generated after heating can enter the user's mouth along the airflow direction.

[0106] Furthermore, in order to control the distribution of the microwave energy field and make the distribution of the microwave energy field on the aerosol-forming substrate more biased towards the bottom of the aerosol-forming substrate, the microwave heating assembly further includes a microwave field regulating structure (not shown) disposed in the cavity 113. This microwave field regulating structure is integrally combined with the inner peripheral sidewall of the outer conductor unit 11 or is in ohmic contact with the inner peripheral sidewall of the outer conductor unit 11. This microwave field regulating structure surrounds the periphery of the receiving cavity 130, and this microwave field regulating structure includes a top wall facing the open end 112. The top wall is closer to the closed end 111 than the first free end. That is to say, the top of the microwave field regulating structure 15 is lower in height than the end of the microwave radiation structure 122 adjacent to the open end 112.

[0107] Furthermore, in an alternative embodiment, the heating assembly is a laser heating assembly, and this laser heating assembly includes a circuit board and a laser chip mounted on the circuit board, and this laser chip is used to emit laser light to the aerosol-forming substrate.

[0108] Furthermore, the heat-not-burn device of the present invention may further include a rotating assembly, and this rotating assembly is used to drive at least one of the aerosol-forming substrate and the heating assembly to rotate to adjust the laser radiation area of the heating assembly on the aerosol-forming substrate.

[0109] Furthermore, in an alternative embodiment, the suction detection assembly includes a first air pressure sensor, and this first air pressure sensor is used to detect whether a suction action occurs by detecting the air pressure in the air passage.

[0110] In another alternative embodiment, the aspiration detection component includes a second barometric pressure sensor, which is configured to detect whether an aspiration action occurs by detecting the barometric pressure in the airway and to detect the aspiration intensity when the aspiration action occurs. Moreover, the control component is further configured to: obtain the first time period according to the aspiration intensity, wherein the first time period is positively correlated with the aspiration intensity. For example, in a specific example, if the current aspiration intensity is less than a preset value, in the heating sub-step, the heating component is controlled to continuously heat the aerosol-forming matrix at a first preset power (e.g., 20 W) for 350 ms; if the current aspiration intensity is greater than or equal to the preset value, the heating component is controlled to continuously heat the aerosol-forming matrix at a first preset power (e.g., 20 W) for 550 ms.

[0111] In the above embodiment, the first barometric pressure sensor or the second barometric pressure sensor can be installed inside the cavity or on the outer surface of the cavity to detect the change in the barometric pressure in the airway during the generation of the aerosol by the heat-not-burn device. After the heat-not-burn device is preheated, with the occurrence of the user's aspiration action, by detecting the user's aspiration action, the temperature control curve during the aerosol generation process is dynamically adjusted.

[0112] In a specific embodiment, as Figure 7 shown, the control component is MCU U1. The trigger interrupt pin (INT) of the barometric pressure sensor U2 is connected to the first pin of MCU U1, and the frequency output pin (FREQ) of the barometric pressure sensor U2 is connected to the second pin of MCU U1. Additionally, the trigger interrupt pin of the barometric pressure sensor U2 is also connected to the power supply voltage through a resistor, the power supply pin (VDD) of the barometric pressure sensor U2 is also connected to the power supply voltage, the ground pin (GND) of the barometric pressure sensor U2 is grounded, and a capacitor is connected between the power supply pin and the ground pin of the barometric pressure sensor U2.

[0113] The trigger pressure threshold of the pressure sensor U2 can be set at the factory, for example, 200 Pa. During use, if the user performs suction, the air pressure in the airway will change. The pressure sensor U2 will detect this change in air pressure and then output a corresponding interrupt trigger signal and frequency signal. The MCU U1 can then determine whether the user has performed suction by detecting this signal. Specifically, when the pressure sensor U2 detects a pressure greater than or equal to 200 Pa, its trigger interrupt pin outputs a high level; otherwise, this pin maintains a low-level output. In this way, the MCU U1 can determine whether a suction action has occurred based on the high or low level of its first pin. Moreover, after the trigger pressure threshold, the frequency output pin of the pressure sensor U2 will output a reference frequency (for example, 2 KHz), and for every subsequent increase of 200 Pa, the frequency output by this frequency output pin will increase by a specific ratio. For example, the output frequency increases by 3%. In this way, the MCU U1 can determine the user's suction force based on the frequency signal input to its second pin.

[0114] When the MCU U1 controls the heating component based on whether a suction action has occurred, regardless of whether the user is suctioning or not, it will adjust the output power of the heating component to make the aerosol-forming matrix reach the corresponding temperature target value. Moreover, because the heating component uses microwave or laser heating, when the user is suctioning, a relatively large power value is quickly output to enable the aerosol-forming matrix to quickly heat up to meet the acquisition of aerosol during the user's suction; when the user is not suctioning, the temperature is reduced by 5 - 10 degrees to reduce the power consumption of the device.

[0115] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A heating control method for a heating without burning device, wherein the heating without burning device comprises a heating component, wherein the heating component is a microwave heating component or a laser heating component, wherein: include: Preheating step: upon receiving a heating start signal, controlling the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate is raised from an initial temperature to a first temperature; Heating step: when the start of the puffing action is detected, controlling the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate is increased from a current temperature to a third temperature, wherein the third temperature is greater than or equal to the first temperature; Cooling step: when the end of the puffing action is detected, the heating component is controlled to heat the aerosol-forming substrate so that the aerosol-forming substrate is cooled from the current temperature to a fourth temperature, wherein the fourth temperature is lower than the third temperature.

2. The heating control method of the heat-not-burn device according to claim 1, characterized in that: The heating step further comprises: If the first puff action is not detected within a preset time, the heating component is controlled to drop from the first temperature to a second temperature, wherein the second temperature is less than or equal to the first temperature.

3. The heating control method of the heating without burning device according to claim 2, characterized in that: The fourth temperature is greater than or equal to the second temperature.

4. The heating control method of the heat-not-burn device according to claim 1, characterized in that: The heating step further comprises: The third temperature is determined according to the current total number of puffs, wherein the third temperature is positively correlated with the current total number of puffs.

5. The heating control method of the heat-not-burn device according to claim 1, characterized in that: The cooling step further comprises: The fourth temperature is determined according to the current total number of puffs, wherein the fourth temperature is positively correlated with the current total number of puffs.

6. The heating control method of the heat-not-burn device according to claim 2, characterized in that: The difference between the fourth temperature and the third temperature is 5 to 10 degrees; and / or the difference between the second temperature and the first temperature is 5 to 10 degrees.

7. The heating control method of the heat-not-burn device according to claim 1, characterized in that: The heating step comprises: Heating sub-step: when the start of the puffing action is detected, controlling the heating component to heat the aerosol-forming substrate at a first preset power within a first time period; Temperature control sub-step: after the first time period ends, if it is determined that the current temperature is lower than the third temperature, the heating component is controlled to heat at a second preset power within a second time period; if it is determined that the current temperature is higher than the third temperature, the heating component is controlled to stop heating within a third time period; wherein the second preset power is less than the first preset power.

8. A heat-not-burn device, characterized in that: include: A heating component for heating the aerosol-forming substrate, wherein the heating component is a microwave heating component or a laser heating component; a power source for providing power supply to the heating assembly; A suction detection component for detecting whether a suction action occurs; A control component, wherein the control component is configured to: Preheating step: upon receiving a heating start signal, controlling the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate is raised from an initial temperature to a first temperature; Heating step: when the start of the puffing action is detected, controlling the heating component to heat the aerosol-forming substrate so that the aerosol-forming substrate is increased from a current temperature to a third temperature, wherein the third temperature is greater than or equal to the first temperature; Cooling step: when the end of the puffing action is detected, the heating component is controlled to heat the aerosol-forming substrate so that the aerosol-forming substrate is cooled from the current temperature to a fourth temperature, wherein the fourth temperature is lower than the third temperature.

9. The heating without burning device according to claim 8, characterized in that: The heating component is a microwave heating component, and the microwave heating component comprises: An outer conductor unit (11), wherein the outer conductor unit (11) comprises a closed end (111) and an open end (112) opposite to the closed end (111); a receiving cavity (130) disposed in the outer conductor unit (11) for receiving an aerosol-forming matrix; A microwave generating unit, used for generating microwave signals; A microwave feeding unit, used for feeding the microwave signal generated by the microwave generating unit; An inner conductor unit, wherein the inner conductor unit comprises a microwave matching structure (121) and a microwave radiating structure (122) coupled to the microwave matching structure (121), wherein the bottom of the microwave matching structure (121) is connected to the closed end (111) of the outer conductor unit (11), and is in ohmic contact with the end wall of the closed end (111), thereby forming a short-circuit end of the microwave heating component; and one end of the microwave radiating structure (122) is coupled to the top of the microwave matching structure (121), and the other end of the microwave radiating structure (122) is located in the accommodating cavity (130), thereby forming an open-circuit end of the microwave heating component.

10. The heat-without-burning device according to claim 8, characterized in that: The heating component is a laser heating component, and the laser heating component includes: A circuit board and a laser chip mounted on the circuit board, wherein the laser chip is used to emit laser light to the aerosol-forming substrate.

11. The heat-without-burning device according to claim 8, characterized in that: The control component is configured as follows: the heating step includes a temperature raising sub-step and a temperature controlling sub-step, wherein: Heating sub-step: when the start of the puffing action is detected, controlling the heating component to heat the aerosol-forming substrate at a first preset power within a first time period; Temperature control sub-step: After the first time period ends, continue: if it is judged that the current temperature is lower than the third temperature, control the heating component to heat with a second preset power in the second time period; if it is judged that the current temperature is higher than the third temperature, control the heating component to stop heating in the third time period; wherein the second preset power is less than the first preset power.

12. The heat-not-burn device according to claim 8, characterized in that: The suction detection component comprises: The first air pressure sensor is used to detect whether a suction action occurs by detecting the air pressure in the airway.

13. The heat-without-burning device according to claim 11, characterized in that: The suction detection component comprises: a second air pressure sensor, used to detect whether a suction action occurs by detecting the air pressure in the airway, and to detect the suction force when a suction action occurs; Furthermore, the control component is further configured to: The first time period is acquired according to the suction force, wherein the first time period is positively correlated with the suction force.

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