Heating element, non-combustion heating device, and heating control method thereof

Abstract

A heating element (11), a non-combustion heating device (100), and a heating control method thereof, wherein the heating control method for the non-combustion heating device (100) includes the steps of: controlling the heating element (11) at the start of heating to raise its temperature from an initial temperature to a first temperature and maintain it thereon (S10); controlling the heating element (11) at the start of heating to raise its temperature from the current temperature to a second temperature higher than the first temperature when the occurrence of puffing is detected (S20); and controlling the heating element (11) at the end of puffing to lower its temperature from the current temperature to a third temperature lower than the second temperature (S30).

Description

Technical Field

[0001] The present invention relates to the field of atomization, and particularly to a heating element, a non-combustion heating device, and a heating control method thereof.

Background Art

[0002] In a non-combustion heating device, the aerosol-forming matrix usually adopts a continuous high-temperature heating method. As shown in FIG. 1, the temperature after preheating is continuously maintained at 350° C. or higher. As a result, since the aerosol-forming matrix is always in a state of generating aerosol, the user has to complete a puff in a short time (for example, 4 to 5 minutes). However, depending on the personal habits of the user, there are also users who leave a long interval during the puff process. During this interval, if the aerosol-forming matrix is still heated at a high temperature, not only will the consumption of the aerosol-forming matrix increase, but it will also affect the mouthfeel. Therefore, this method has a poor experience for smokers. In addition, in the continuous high-temperature heating method, there is also a problem that the mouthfeel in the front and rear stages does not match. In the later stage, problems such as the generation of a burnt smell and insufficient aerosol amount due to continuous heating occur, and the energy consumption due to continuous heating is also relatively large.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The technical problem to be solved by the present invention is the technical defect of the prior art that the user cannot puff at any timing.

Means for Solving the Problems

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows. A heating control method for a non-combustion heating device including a heating element for heating an aerosol-forming matrix, comprising: At the start of heating, controlling the heating element to raise the temperature from the initial temperature to the first temperature and maintain it; When the occurrence of a puffing motion is detected, the heating element is controlled to raise its temperature from the current temperature to a second temperature higher than the first temperature. The method includes the step of controlling the heating element to lower its temperature from the current temperature to a third temperature lower than the second temperature when the end of the puffing operation is detected.

[0005] Preferably, the heating element employs an infrared radiation heating method to heat the aerosol-forming matrix, the heating element includes a heating body and a tube, the heating body includes a heating substrate and an infrared radiation layer installed on the outer surface of the heating substrate, the heating substrate is heated by energization and the infrared radiation layer is excited to emit infrared rays, the heating body is installed at least partially spaced from the tube wall of the tube, the tube wall of the tube transmits the infrared rays, and the infrared rays are used to heat the aerosol-forming matrix.

[0006] Preferably, the wavelength of the infrared light includes a wavelength range of at least 2 μm to 4.75 μm.

[0007] Preferably, the first temperature is 100°C to 300°C, and / or The second temperature is 300°C to 400°C, and / or The third temperature is between 100°C and 300°C.

[0008] Preferably, the first temperature is 180°C to 280°C, and / or The second temperature is 300°C to 380°C, and / or The third temperature range is 180°C to 280°C.

[0009] Preferably, the first temperature is 200°C to 260°C, and / or The second temperature is 330°C to 360°C, and / or The third temperature is between 200°C and 260°C.

[0010] Preferably, The steps include controlling the first timer to start timing when heating begins, The steps include: when the occurrence of the first puffing operation is detected, controlling the first timer to stop timing and determining the preheating time based on the timing of the first timer; The method further includes the step of determining the second temperature corresponding to the first puffing operation based on the preheating time, wherein the second temperature corresponding to the first puffing operation is negatively correlated with the heating time within the preheating time.

[0011] Preferably, The steps include: when the end of the i-1 puff operation is detected, control the second timer and start timing; A step in which, when the i-th puff operation is detected, the second timer is controlled to stop timing, and the warming time is determined based on the timing of the second timer, wherein i = 2, 3, ... The method further includes the step of determining the second temperature corresponding to the i-th puffing operation based on the aforementioned warming time, wherein the second temperature corresponding to the i-th puffing operation is positively correlated with the aforementioned warming time.

[0012] Preferably, When the end of the puffing operation is detected, the step of statistically recording the current total number of puffs and / or cumulative heating time, The further step includes determining the third temperature based on the total number of puffs and / or cumulative heating time.

[0013] Preferably, the step of determining the second temperature corresponding to the first puffing operation based on the preheating time is: A step of determining whether the heating time within the preheating time is less than a first predetermined time, If the heating time is less than a first predetermined time, the second temperature corresponding to the first puffing operation is determined to a first specific value. If the temperature rise time is equal to or longer than a first predetermined time, determining the second temperature corresponding to the first puff operation to be a second specific value smaller than the first specific value.

[0014] Preferably, the step of determining the second temperature corresponding to the i-th puff operation based on the heat retention time includes: judging whether the heat retention time is less than a second predetermined time; if the heat retention time is less than the second predetermined time, determining the second temperature corresponding to the i-th puff operation to be a third specific value; if the heat retention time is equal to or longer than the second predetermined time, determining the second temperature corresponding to the i-th puff operation to be a fourth specific value larger than the third specific value.

[0015] Preferably, the step of controlling the heating element includes: acquiring in real time the temperature detected by the temperature measurement module to obtain a temperature detection value; acquiring a temperature target value, wherein at the start of heating, the temperature target value is the first temperature, when the occurrence of a puff operation is detected, the temperature target value is the second temperature, and when the end of a puff operation is detected, the temperature target value is the third temperature; performing PID calculation on the temperature detection value and the temperature target value, and controlling the heating element based on the result of the PID calculation.

[0016] Preferably, when it is determined that a predetermined stop condition is satisfied, stopping the control of the heating element, where the predetermined stop condition includes that the total number of puffs has reached a predetermined number, that the cumulative heating time has reached a third predetermined time, and receiving a stop command input from a user, and further includes a step including at least one of them.

[0017] The present invention provides a computer storage medium storing a computer program, which, when executed by a processor, realizes the steps of the heating control method of the non-combustion heating device described above.

[0018] The present invention also provides a non-combustion heating device including a processor and a memory storing a computer program, wherein the processor, when executing the computer program, realizes the steps of the heating control method of the non-combustion heating device described above.

[0019] The present invention also provides a heating element including a heating main body and a tube. The heating main body is energized and heated by adopting the heating control method described above, and is used for emitting infrared rays. The heating main body is installed at least partially spaced apart from the tube wall of the tube. The tube wall of the tube transmits the infrared rays, and the infrared rays are used for heating an aerosol formation matrix.

[0020] Preferably, the heating main body includes a heating substrate and an infrared radiation layer installed on the outer surface of the heating substrate. The heating substrate is energized and heated, and excites the infrared radiation layer to emit infrared rays.

[0021] Preferably, at least a part of the tube is inserted into an aerosol generation matrix, and includes a main body portion and a tip portion installed at one end of the main body portion. The heating element is installed at a distance from the inner wall of the main body portion.

[0022] Preferably, the heating main body is provided on the outer periphery of the tube, and the tube is provided with a receiving cavity, and at least a part of the aerosol generation matrix is accommodated in the receiving cavity.

Advantages of the Invention

[0023] By implementing the technical solution of the present invention, the aerosol-forming matrix can be preheated at a low temperature (first temperature) and kept warm at a low temperature (third temperature) by controlling the temperature of the heating element. Heating to a high temperature (second temperature) is performed only when puffing occurs. Therefore, even if the user puffs randomly over a long period of time, the aerosol-forming matrix will not be excessively carbonized during the low-temperature preheating and low-temperature warming period, and the consumption of the aerosol-forming matrix will be reduced. Consequently, the restriction that the user must finish puffing within 5 minutes is eliminated, and the user can puff at any time, improving the user experience. Furthermore, charring of the aerosol-forming matrix due to continuous high-temperature heating can be avoided, and consistency in mouthfeel can be guaranteed. [Brief explanation of the drawing]

[0024] The present invention will be further described below with reference to the drawings and embodiments. In the drawings, [Figure 1] This is a graph showing the heating control of a conventional aerosol-forming matrix. [Figure 2] This is a flowchart of the first embodiment of the heating control method for a non-combustion heating device according to the present invention. [Figure 3] This is a heating control graph of the aerosol-forming matrix in one embodiment of the present invention. [Figure 4] This is a heating control graph of the aerosol-forming matrix in another embodiment of the present invention. [Figure 5] This is a heating control graph of the aerosol-forming matrix in yet another embodiment of the present invention. [Figure 6] This is a structural diagram of the first embodiment of the non-combustion heating device according to the present invention. [Figure 7] Figure 6 is a schematic diagram of the structure of the heating element in the non-combustion heating device shown. [Figure 8] Figure 7 is a cross-sectional view of the heating element. [Figure 9] Figure 7 is a schematic diagram of the exploded structure of the heating element shown. [Figure 10]This is a schematic diagram of the structure of a second embodiment of the heating element in the non-combustion heating device of the present invention. [Figure 11] Figure 10 is a schematic diagram of the heating element shown, viewed from a different angle. [Figure 12] Figure 10 is a cross-sectional view of the heating element shown. [Figure 13] Figure 10 is a schematic diagram of the exploded structure of the heating element shown. [Modes for carrying out the invention]

[0025] Hereinafter, the technical solutions in embodiments of the present invention will be clearly and completely described with reference to the drawings of the embodiments. Clearly, the embodiments described are not all embodiments, but only some embodiments of the present invention. Those skilled in the art will assume that all other embodiments that can be obtained without expending any creative effort based on embodiments of the present invention are all within the scope of the protection of the present invention.

[0026] Figure 2 is a flowchart of a first embodiment of the heating control method for a non-combustion heating device according to the present invention. The heating control method of this embodiment is applied to the processor of the non-combustion heating device, which further includes a heating element, a power supply, a puff detection module, a temperature measurement module, and the like. Of these, the power supply provides energy to the heating element. The temperature measurement module is used to detect the temperature of the heating element. The puff detection module is used to detect puffing. The heating element is used to heat the aerosol-forming matrix, and the heating element can take various forms, such as a heating sheet, heating needle, heating rod, heating wire, or heating wire, or the heating element may be a combination of two or more different forms of heating devices.

[0027] As shown in Figure 2, the heating control method for the non-combustion heating device of this embodiment includes the following steps S10 to S30. Step S10: At the start of heating, the heating element is controlled to raise the temperature from the initial temperature to the first temperature and maintain that temperature. In this step, heating can be started by pressing and holding a button on the non-combustion heating device, or by automatically starting when the insertion of the aerosol-forming matrix is ​​detected. Furthermore, at the start of heating, as shown in Figure 3, the heating element is raised from its initial temperature to a first temperature T1 during a period from 0 to t1, and maintained at the first temperature T1, where the first temperature T1 is 100°C to 300°C (including endpoint values ​​and any value between the endpoints), preferably controlled to 180°C to 280°C (including endpoint values ​​and any value between the endpoints). Furthermore, the time it takes for the heating element to rise from the initial temperature to the first temperature T1 is very short, and may be within 3 seconds, or within 2 seconds, or even within 0.5 seconds, thereby preheating the aerosol-forming matrix. The length of the preheating time is not fixed. Unless the user puffs, the aerosol-forming matrix is ​​always kept at the first temperature T1. In some embodiments, T1 may be 190°C, 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, or 270°C.

[0028] Step S20: If puffing is detected, the heating element is controlled to raise its temperature from the current temperature to a second temperature, which is higher than the first temperature. In this step, the puff detection module can detect the user's puff action. As shown in Figure 3, if a puff action is detected at time t1, the heating element is controlled to continue heating, raising the temperature of the heating element to a second temperature T2 (T2 > T1), where the second temperature T2 is 300°C to 400°C (including endpoint values ​​and any value between the endpoints), that is, T2 has a maximum value of 400°C but is 300°C or higher, and preferably the second temperature is 300°C to 380°C (including endpoint values ​​and any value between the endpoints). In some embodiments, T2 may be 300°C, 310°C, 320°C, 330°C, 340°C, 350°C, 360°C, 370°C, or 380°C.

[0029] Step S30: When the end of the puffing operation is detected, the heating element is controlled to lower the temperature from the current temperature to a third temperature that is lower than the second temperature.

[0030] In this step, the puff detection module can detect the user's puff action. As shown in Figure 3, if the end of the puff action is detected at time t2, the heating element is controlled to start cooling down, and the target temperature may be the third temperature. The heating element is also kept warm. Here, the third temperature is 100°C to 300°C (including endpoint values ​​and any value between the endpoints), and is preferably controlled to 180°C to 280°C (including endpoint values ​​and any value between the endpoints). In this embodiment, the third temperature is equal to the first temperature T1. Of course, in other embodiments, the third temperature may be different from the first temperature T1. In some embodiments, the third temperature may be 190°C, 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, or 270°C.

[0031] The technical solution of this embodiment allows the aerosol-forming matrix to be preheated at a low temperature (below the first temperature of the heating element) and kept warm at a low temperature (below the third temperature of the heating element) through temperature control of the heating element. Only when puffing occurs is it heated to a high temperature (below the second temperature of the heating element). Therefore, even if the user puffs randomly over a long period of time, the aerosol-forming matrix will not be excessively carbonized during the low-temperature preheating and low-temperature warming period, and the consumption of the aerosol-forming matrix will be reduced. Consequently, the restriction that the user must finish puffing within 5 minutes is eliminated, and the user can puff at any time, improving the user experience. Furthermore, it is possible to avoid charring of the aerosol-forming matrix due to continuous high-temperature heating and ensure consistency in mouthfeel. However, conventional heating elements cannot achieve the above control. Conventional heating elements are realized by heat conduction, and because the heat capacity of the heating element is relatively large, their heating efficiency is relatively low, and the low-temperature warming temperature is higher than the warming temperature of the present invention, generally 300°C or higher, for example, 330°C. However, if the warming temperature is too high, the aerosol-forming matrix reacts rapidly between puffs, shortening the total puffing time and preventing users from puffing at their preferred timing according to their habits. Furthermore, prolonged warming at high temperatures, followed by further heating at even higher temperatures, and the slow cooling of the heating element after puffing can easily lead to localized burning of the aerosol-forming matrix and a loss of consistency in mouthfeel before and after puffing.

[0032] In the actual temperature measurement and control process, in some embodiments, the temperature measurement module actually detects the temperature of the heating element, preferably the temperature of the outer wall of the heating element, and the heating temperature of the aerosol-forming matrix is ​​controlled by controlling the temperature of the heating element. The temperatures of the heating element and the aerosol-forming matrix are positively correlated but do not necessarily have to be the same. In other words, in some embodiments, the heating temperature of the heating element represents the heating temperature of the aerosol-forming matrix.

[0033] The puffing action can be detected using a puffing detection module such as a microphone, or it can also be detected by temperature detection, heat capacity detection, photosensitive detection, pressure detection, etc.

[0034] Furthermore, in one selectable embodiment, the heating element employs an infrared radiation heating method to heat the aerosol-forming matrix, and the infrared wavelength is mainly 2 μm to 4.75 μm (including endpoint values ​​and any value between the endpoints), and it can be understood that heating by heat conduction is also present simultaneously with heating by infrared radiation.

[0035] In a specific embodiment of the infrared radiation heating method, the heating element includes a heating body and a tube. The heating body includes a heating substrate and an infrared radiation layer installed on the outer surface of the heating substrate. The heating substrate is heated by an electric current and used to excite the infrared radiation layer and emit infrared radiation. The heating body is installed at least partially spaced apart from the tube wall of the tube. The tube wall of the tube transmits the infrared radiation, which is used to heat the aerosol-forming matrix. The heating body as a whole can have a single helix, double helix, or N-shaped structure with a heating wire wound around it, and can also be cylindrical, sheet-shaped, or columnar. The heating principle is as follows: The heating element primarily heats the aerosol-forming matrix with infrared radiation from the infrared radiation layer, and the heating is supplemented by heat conduction from the heating element. Unlike conventional heating elements, the heating element of this solution reaches a maximum temperature of 1300°C, is generally 500-1000°C, and preferably reaches 600-800°C during the steady-state heating process (the local temperature of conventional heating elements is approximately 420°C). The infrared radiation layer in this temperature range mainly emits light waves with wavelengths of 2 μm to 14 μm (including endpoint values ​​and any value between the two endpoints), which is a wavelength range that is easily absorbed by the aerosol-forming matrix. In particular, the energy density is high in the wavelength range of 2 μm to 4.75 μm (including endpoint values ​​and any value between the two endpoints), which can rapidly raise the temperature of the aerosol-forming matrix.

[0036] The heating element heats up to over 500°C, and even over 1000°C, in an instant (1-3 seconds), exciting the infrared radiation layer and emitting infrared rays. In this way, the infrared rays rapidly heat the aerosol-forming matrix. Due to this rapid heating, the preheating and holding temperatures can be set as low as possible. As a result, the consumption of the aerosol-forming matrix during the preheating and holding phases is very small, the puffable time of the aerosol-forming matrix is ​​greatly extended, allowing users to take longer intervals between puffs, satisfying their desire to puff at any time, reducing their demands regarding puffing time, and significantly improving the user experience without compromising the mouthfeel of the puff. In addition, the light waves have high penetration power and achieve uniform heating, so energy does not excessively concentrate on specific points or surfaces. As a result, steam is generated quickly without burning, guaranteeing a pleasant mouthfeel.

[0037] Furthermore, at least a small gap is provided between the heating element and the tube (e.g., a quartz tube), and preferably, the heating element does not come into complete contact with the tube. The temperature of the heating element can reach a maximum of 1300°C, but is generally controlled to 500-1000°C, and 600-800°C is preferred during the steady-state heating process. The entire puffing process is divided into the following two main stages. Preheating stage: The preheating time is very short, enabling rapid steam generation, and puffing is generally possible with only about 3 seconds of control. The reason for this is as follows: The heating element rapidly heats up to over 500°C, and most of the energy is infrared radiation emitted by the heating element, with wavelengths mainly concentrated in the 2μm to 14μm range, especially 2μm to 4.75μm range. The aerosol-forming matrix absorbs this radiant energy and heats up rapidly. In addition, some of the energy is transferred to the quartz tube by heat conduction through the air as a medium, and after the quartz tube heats up, it is transferred to the aerosol-forming matrix by heat conduction (the proportion of this energy is relatively small during the preheating stage). Another portion of the energy is radiated as light waves, which the quartz tube absorbs and heats up, emitting infrared radiation to the outside, mainly with wavelengths of 8μm to 11μm. Therefore, the aerosol-forming matrix rapidly generates vapor because it absorbs light waves with wavelengths of 2 μm to 14 μm (mainly including wavelengths of 2 μm to 4.75 μm and 8 μm to 11 μm), generating heat, and this efficiency is far higher than direct heat conduction. In addition, the heat conduction and thermal radiation of the quartz tube also play a certain role.

[0038] Steady-state heating phase: After the preheating phase, the user is informed that puffing is possible within 3 seconds. If the user does not puff, after approximately 6 seconds, the controller controls the heating element to operate at low power. At this time, because the heating element of this solution has a relatively small heat capacity, it cools down quickly, and after the power reduction, the heating element can cool down rapidly. At this time, the light wave energy absorbed by the aerosol-forming matrix of the heating element also decreases rapidly. Furthermore, the gap between the heating body and the quartz tube significantly reduces heat conduction, and therefore the temperature of the aerosol-forming matrix and the quartz tube also decreases rapidly. If puffing occurs at this point, rapid heating occurs with the puffing, aerosols are generated, and after the puffing ends, low-temperature heat retention is performed.

[0039] To achieve rapid vapor generation, the heating element rapidly heats up to over 500°C, and even over 1000°C. Light waves with a main wavelength of 2μm to 4.75μm enable the aerosol-forming matrix to quickly generate aerosols. The transmission of light waves and uniform heating prevent charring of the aerosol-forming matrix. Furthermore, the gap between the heating element and the quartz tube allows the quartz tube to cool relatively quickly, preventing excessive temperature increases in the part of the aerosol-forming matrix in contact with the quartz tube, thus preventing tobacco charring. Therefore, rapid heating is achieved without a burnt smell, meaning puffing can be done at any time, and the amount of aerosol and mouthfeel are guaranteed.

[0040] Furthermore, in one selectable embodiment, the heating control method of the present invention is The steps include controlling the first timer to start timing when heating begins, The steps include: when the occurrence of the first puffing operation is detected, controlling the first timer to stop timing and determining the preheating time based on the timing of the first timer; The further step of determining the second temperature corresponding to the first puffing operation based on the preheating time, wherein the second temperature corresponding to the first puffing operation is negatively correlated with the heating time within the preheating time.

[0041] In this embodiment, a first timer can be activated at the start of heating to record the preheating time. This preheating time is the time interval from the start of heating until the first puff operation occurs, and the heating time within the preheating time can be determined by combining it with the temperature detected by the temperature measurement module. The second temperature corresponding to the first puff operation is adjusted based on the heating time within the preheating time prior to the puff. Specifically, the shorter the heating time within the preheating time, the higher the second temperature corresponding to the first puff operation, but it will not exceed the set maximum value of the second temperature (e.g., 400°C). Conversely, the longer the heating time within the preheating time, the lower the second temperature corresponding to the first puff operation, but it will not fall below the set minimum value of the second temperature (e.g., 300°C). The heating time here can be determined based on the time recorded by the first timer, or it can be a time preset in the system, for example, 3 seconds. That is, at a predetermined power output, the heating time in the preheating stage is preset to 3 seconds, and thereafter, preheating is performed at the instantaneous temperature reached. During the preheating phase after 3 seconds, the time recorded by the first timer does not affect the determination of the second temperature.

[0042] During the preheating phase, the aerosol-forming matrix is ​​cold when it is first inserted. A certain amount of time is required for the heating element to heat the vapor generation section of the aerosol-forming matrix uniformly. If the preheating time is insufficient, as shown in Figure 4, the preheating time must be 0 to t1' and the heating time 0 to t0', which is shorter than the heating time shown in Figure 3. Therefore, after the first puff, it is necessary to heat to a higher second temperature T2'. On the other hand, if the preheating time is sufficient, the aerosol-forming matrix is ​​heated uniformly, and the second temperature can be lowered accordingly.

[0043] Furthermore, in one selectable embodiment, the heating control method of the present invention is The steps include: when the end of the i-1 puff operation is detected, control the second timer and start timing; A step in which, upon detecting the i-th puffing operation, the second timer is controlled to stop timing, and the warming time is determined based on the timing of the second timer, where i = 2, 3, ... The further step includes determining the second temperature corresponding to the i-th puffing operation based on the aforementioned heat retention time, wherein the second temperature corresponding to the i-th puffing operation is positively correlated with the heat retention time.

[0044] In this embodiment, the subsequent puffing operation also records the holding time between the preceding and succeeding puffing operations, i.e., the time interval from the end of the previous puffing operation to the start of the current puffing operation. Furthermore, the second temperature corresponding to the current puffing operation can be adjusted based on this holding time. Specifically, the longer the holding time, the higher the second temperature corresponding to the current puffing operation will be, but it will not exceed the maximum value of the set second temperature (e.g., 400°C). Conversely, the shorter the holding time, the more likely it is that puffing will occur before the temperature of the aerosol-forming matrix drops to the third temperature, so the heating temperature (second temperature) required for the current puffing operation will be relatively lower. As shown in Figure 5, the holding time until the current puffing operation is t4~t5, which is clearly shorter than the holding time until other puffing operations, so the second temperature T2" ​​corresponding to the current puffing operation will also be lower, but it will not fall below the minimum value of the set second temperature (e.g., 300°C).

[0045] In the two embodiments described above, the second temperature corresponding to each puffing operation changes over time, but the rules governing the change of the second temperature corresponding to the first puffing operation and the second temperature corresponding to subsequent puffing operations are different. The second temperature corresponding to the first puffing operation has a negative correlation with the heating time during the preheating period, while the second temperature corresponding to subsequent puffing operations has a positive correlation with the heat retention time.

[0046] Furthermore, in one selectable embodiment, the heating control method of the present invention is When the end of the puffing operation is detected, the step of statistically recording the current total number of puffs and / or cumulative heating time, The method further includes the step of determining a third temperature based on the total number of puffs and / or cumulative heating time.

[0047] In this embodiment, the third temperature does not have to be a fixed value and may be adjusted according to the number of puffs and / or cumulative heating time. Of course, in other embodiments, the third temperature may be set to a fixed value.

[0048] Furthermore, in a specific embodiment, the step of determining the second temperature corresponding to the first puffing operation based on the preheating time is: The steps include determining whether the heating time within the preheating time is less than a first predetermined time (for example, 3 seconds), If the heating time is less than a first predetermined time, the second temperature corresponding to the first puffing operation is determined to be a first specific value, for example, 380°C. If the heating time is equal to or greater than a first predetermined time, the method includes the step of determining the second temperature corresponding to the first puffing operation to a second specific value smaller than the first specific value, for example, 360°C.

[0049] Furthermore, in a specific embodiment, the step of determining the second temperature corresponding to the i-th puffing operation based on the heat retention time is: The steps include determining whether the aforementioned heat retention time is less than a second predetermined time, for example, 3 seconds, If the aforementioned heat retention time is less than the second predetermined time, the second temperature corresponding to the i-th puffing operation is determined to be a third specific value, for example, 350°C. If the heat retention time is greater than or equal to a second predetermined time, the procedure includes the step of determining the second temperature corresponding to the i-th puffing operation to a fourth specific value (e.g., 360°C) that is greater than the third specific value.

[0050] Furthermore, in one selectable embodiment, the step of controlling the heating element includes the following steps: The temperature detected by the temperature measurement module is acquired in real time to obtain the temperature detection value. In some embodiments, the temperature detected by the temperature measurement module in this step may be the temperature of the heating element, the temperature of the heating chamber, or the temperature of the inner wall of the heating chamber. In specific embodiments, the temperature measurement module is a temperature measurement film attached to the wall of a quartz tube, or a temperature measurement probe installed inside the quartz tube. In some embodiments, the first temperature, second temperature, and third temperature in the above control method are the temperatures of the quartz tube.

[0051] A target temperature value is obtained. Here, at the start of heating, the target temperature value is the first temperature. When the occurrence of puffing is detected, the target temperature value is the second temperature. When the end of puffing is detected, the target temperature value is the third temperature. PID calculation is performed on the detected temperature value and the target temperature value, and the heating element is controlled based on the results of the PID calculation.

[0052] In this embodiment, the temperature detected by the temperature measurement module is used as the temperature detection value, and a temperature target value can be determined for each stage. Preferably, the temperature target value changes dynamically. Subsequently, the temperature detection value and the temperature target value are used as PID inputs, PID calculations are performed, and heating control information is output. Finally, heating control of the heating element is performed based on this heating control information.

[0053] Furthermore, in one selectable embodiment, the heating control method of the present invention further includes the following steps: If it is determined that a predetermined stop condition is met, control to the heating element is stopped. Here, the predetermined stop condition includes at least one of the following: The number of puffs has reached a predetermined number, for example, 10 to 16 times. The total heating time has reached the third predetermined time, for example, 5 to 60 minutes, and The user has entered a stop command, and it has been received.

[0054] In this embodiment, heating of the heating element can be stopped when the total number of puffs reaches a predetermined number, when the total puff time exceeds a predetermined time, or when the user inputs a stop command (for example, by long-pressing the main unit button).

[0055] The numerical ranges in the above embodiments shall include their endpoint values.

[0056] The present invention further provides a computer storage medium storing a computer program. The computer program, when executed by a processor, realizes the steps of the heating control method for the non-combustion heating device described above.

[0057] The computer-readable storage medium of the present invention may be any computer-readable storage medium capable of storing program code, such as a USB flash drive, a mobile hard disk, read-only memory (ROM), a magnetic disk, or an optical disk.

[0058] The present invention also provides a non-combustion heating device comprising a processor and a memory storing a computer program. The processor executes the computer program to realize the steps of the heating control method for the non-combustion heating device described above.

[0059] The processor of the present invention provides computational and control capabilities and supports the operation of the entire non-combustion heating device. In the embodiments of this application, the processor may be a central processing unit (CPU), or it may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), other programmable logic devices, discrete gates, transistor logic devices, discrete hardware components, etc. Here, the general-purpose processor may be a microprocessor, or any conventional processor, etc.

[0060] Figure 6 is a structural diagram of a first embodiment of the non-combustion heating device according to the present invention. The non-combustion heating device 100 according to this embodiment can heat the aerosol-forming matrix 200 by employing a non-combustion heating method, has excellent atomization stability, and provides a good mouthfeel when atomized. In some applications, the aerosol-forming matrix 200 is installed in the non-combustion heating device 100 in a removable manner, and the aerosol-forming matrix 200 may be cylindrical. Specifically, the aerosol-forming matrix may be a solid material such as a thread-like, sheet-like, or integrally molded form made from the leaves and / or stems of a plant (e.g., tobacco), and flavor components may be added to the solid material.

[0061] As shown in Figures 6 and 7, in this embodiment, the non-combustion heating device 100 further includes a heating element 11 and a power supply component 20. The heating element 11 is partially insertable into the aerosol-forming matrix 200, specifically, a portion thereof is inserted into the medium section of the aerosol-forming matrix 200, and when energized, generates infrared radiation to heat and atomize the medium section of the aerosol-forming matrix 200, thereby generating an aerosol. The heating element 11 has the advantages of a simple structure, high atomization efficiency, high stability, and a long service life. The power supply component 20 is used to supply power to the heating element 11.

[0062] As shown in Figures 7-9, in this embodiment, the heating element 11 includes a tube 111, a heating body 112, and a base 113. The tube 111 houses at least a portion of the heating body 112 and allows light waves to penetrate to the aerosol-forming matrix 200. Specifically, in this embodiment, the tube 111 transmits infrared radiation, thereby facilitating the emission of infrared radiation from the heating body 112 to heat the aerosol-forming matrix 200. The base 113 is installed in the opening 1110 of the tube 111 and is used to secure the tube 111.

[0063] In this embodiment, the heating body 112 includes a heating substrate and an infrared radiation layer. The heating substrate is heated by applying an electric current using the heating control method described above, and the infrared radiation layer is excited in the electric heating state to generate and emit infrared rays. The infrared radiation layer is provided on the outer surface of the heating substrate.

[0064] In some embodiments, the heating body 112 includes a heating substrate and an infrared radiation layer covering the outside of the heating substrate, the heating substrate including a metal substrate having high temperature oxidation resistance, such as a metal wire. The heating substrate can be a metal material having good high temperature oxidation resistance, high stability, and resistance to deformation, such as a nickel-chromium alloy substrate (e.g., nickel-chromium alloy wire) or an iron-chromium-aluminum alloy substrate (e.g., iron-chromium-aluminum alloy wire). In some embodiments, the diameter of the metal wire may be 0.15 mm to 0.8 mm (including endpoint values ​​and any value between both endpoints). Furthermore, the metal wire (heating substrate) can be bent or wound to form heating sections of various shapes, for example, it can be bent into a spiral columnar heating section 1120 as shown in Figures 7 to 9. Understandably, in other embodiments, the heating substrate may be wound to form a single helix, double helix, M-shaped, N-shaped, or other shape of heating section.

[0065] In some embodiments, the heating body further includes an antioxidant layer, which is formed between the heating substrate and the infrared radiation layer. Specifically, the antioxidant layer may be an oxide film. The heating substrate is heat-treated at a high temperature to generate a dense oxide film on its surface, which serves as the antioxidant layer. Of course, it is understandable that in other embodiments, the antioxidant layer is not limited to an oxide film formed on itself, and in other embodiments, it may be an oxidation-resistant coating applied to the outer surface of the heating substrate. The thickness of the antioxidant layer may be selected from 1 μm to 150 μm (including endpoint values ​​and any value between the endpoints).

[0066] In some embodiments, the infrared radiation layer may be an infrared layer. The infrared layer may be formed on the side of the antioxidant layer away from the heat-generating substrate by high-temperature heat treatment of the infrared layer-forming substrate. Specifically, the infrared layer-forming substrate may be a silicon carbide, spinel, or a composite thereof. Of course, as can be understood, in other embodiments, the infrared radiation layer is not limited to an infrared layer. In other embodiments, the infrared radiation layer may be a composite infrared layer. Specifically, the infrared layer may be formed on the side of the antioxidant layer away from the heat-generating substrate by methods such as dip coating, spray coating, or brush coating. The thickness of the infrared radiation layer may be 10 μm to 300 μm (including endpoint values ​​and any value between the endpoints).

[0067] In this embodiment, the tube wall of the tube 111 and the entire heating body 112 are spaced apart, for example, a gap 1114 is provided between the tube 111 and the heating body 112, and this gap 1114 may be used to fill with air (i.e., the atmosphere is in communication with the inside and outside of the tube). Of course, understandably, in other embodiments, the gap 1114 may be used to fill with a reducing gas or an inert gas. The gap 1114 is provided so that the tube 111 and the heating body 112 do not come into direct contact. In some embodiments, the heating body 112 may be spaced apart from the tube wall of the tube 111. Specifically, the heating body 112 includes a heating section 1120, the radial dimensions of some segments of the heating section 1120 may be larger than the radial dimensions of other segments. The radial dimension of some segments of the heating element 1120 may be equal to the inner diameter of the tube 111, thereby serving a positioning function. Of course, it is understandable that in some embodiments, a portion of the inside of the tube 111 may protrude toward the heating body 112 and contact the heating body 112 to serve a positioning function. Of course, it is understandable that in other embodiments, the heating body 112 may not directly contact the tube wall of the tube 111 by providing isolation and positioning structures on the heating body 112 or the tube wall of the tube 111. For example, a ceramic ring or the like may be provided on some segments of the heating body 112. Note that the above-mentioned gap refers to a gap into which air can enter, and does not necessarily mean the presence of air or other gases. A vacuum is also a type of gap.

[0068] In this embodiment, the heating element 1120 includes a first heating element 112a and a second heating element 112b. One end of the first heating element 112a and the second heating element 112b are connected. The first heating element 112a and the second heating element 112b are integrally molded structures and are formed by bending and winding one or two heating wires. Understandably, in other embodiments, the first heating element 112a and the second heating element 112b may be separate structures, and the first heating element 112a and the second heating element 112b may each consist of two heating wires. Understandably, in other embodiments, the second heating element 112b may be omitted, and a non-heating conductive rod may be used instead.

[0069] The heating body 112 further includes a conductive portion 1121 installed at one end of the heating section 1120. The conductive portion 1121 is connected to the heating section 1120, extends from one end of the tube 111, and passes through the base 113 to be electrically connected to the power supply component 20. The conductive portion 1121 may be fixed to the heating section 1120 by welding. Of course, as can be understood, in other embodiments, the heating section 1120 may be integrally molded with the conductive portion 1121. The first free end 112d and the second free end 112e of the heating body 112 each form two conductive portions 1121, namely, the first free end 112d of the first heating section 112a forms one conductive portion 1121, and the second free end 112e of the second heating section 112b forms the other conductive portion 1121. In other embodiments, the conductive portion 1121 may be a lead wire or may be welded to the heating portion 1120. Of course, it is understandable that in other embodiments, the conductive portion 1121 is not limited to a lead wire but may be other conductive structures.

[0070] In this embodiment, the tube 111 may be a quartz glass tube. Of course, it is understandable that in other embodiments, the tube 111 is not limited to a quartz tube, but may be other light wave transmitting window materials such as infrared-transmitting glass, transparent ceramics, or diamond.

[0071] In this embodiment, the tube 111 is a hollow tubular shape with a circular cross-section and has both ends distributed along the axial direction, and is used to be inserted into the aerosol-forming matrix 200, at least in part. Specifically, the tube 111 includes a main body 1111 and a tip 1112 installed at one end of the main body 1111, and the heating body 112 is installed at a distance from the inner wall of the main body 1111. Of course, it is understandable that in other embodiments, the cross-section of the tube 111 is not limited to a circle, and for example, the tube may be triangular prism-shaped (triangular cross-section), flat (rectangular parallelepiped-shaped cross-section), elliptical columnar cross-section, or tubular of other shapes. The main body 1111 is a hollow structure with an opening 1110 at one end. The tip 1112 is installed at the end of the main body 1111 away from the opening 1110. By providing the main body portion 1111, insertion and removal of at least a portion of the heating element 11 into the aerosol-forming matrix 200 is facilitated. In this embodiment, a first containment cavity 1113 is formed inside the tube 111, and the first containment cavity 1113 is a columnar cavity. In other embodiments, the heating body 112 may be installed at a distance from the outer circumference of the tube 111. A second containment cavity for containing the aerosol-forming matrix 200 may be formed inside the tube 111.

[0072] In this embodiment, at least a portion of the top of the heating body 112 is in contact with the inner wall surface of the tip portion 1112. This allows the end of the heating body 112 closest to the tip portion 1112 to serve as a positioning function during installation, prevents the lower part of the heating body 112 from directly contacting the inner wall of the tube 111, increases the heat dissipation area, and prevents the temperature of the end of the heating section 1120 closest to the tip portion 1112 from rising excessively.

[0073] Figures 10 to 13 show a heating element of a non-combustion heating device according to another embodiment of the present invention, and the differences from the above-described embodiment are as follows. The heating element 11 is not limited to being partially inserted into the aerosol-forming matrix 200 to heat the aerosol-forming matrix 200. In this embodiment, the heating element 11 is placed over the outer circumference of the medium section of the aerosol-forming matrix 200, and the heating body 112 is provided on the outer circumference of the tube 111, the tube 111 is provided with a containment cavity, at least a portion of the aerosol-generating matrix is ​​contained in the containment cavity, and in this embodiment, the aerosol-forming matrix 200 is heated by a circumferential heating method.

[0074] In this embodiment, the tube 111 includes a first tube 111a and a second tube 111b. Of these, the first tube 111a has a hollow structure with both ends penetrating. The first tube 111a may be cylindrical, and its inner diameter may be slightly larger than the outer diameter of the aerosol-forming matrix 200. A second containment cavity 1115 is formed inside the first tube 111a to house the aerosol-forming matrix 200 and to form a heating space for heating the medium section of the aerosol-forming matrix 200. The axial length of the first tube 111a may be greater than the axial length of the second tube 111b. The second tube 111b may be fitted over the outer circumference of the first tube 111a, and the second tube 111b may be cylindrical. The radial dimension of the second tube 111b may be larger than the radial dimension of the first tube 111a, that is, a gap is provided between the second tube 111b and the first tube 111a, and this gap becomes a first housing cavity 1113 in which the heating body 112 is housed. In some embodiments, the heating body 112 is wound around the outer circumference of the first tube 111a, and there is a gap 1114 between the entire heating body and the inner wall of the second tube 111b and the outer wall of the first tube 111a, thereby creating a constant temperature difference between the inner wall of the first housing cavity 1113 and the heating body 112, which serves as insulation. In some embodiments, a reflective layer may be provided on the inner wall of the second tube 111b, and the reflective layer is used to reflect the heat of the heating body 112 and radiate it to the aerosol forming matrix 200, thereby increasing the heating efficiency.

[0075] In other embodiments, the heating body 112 is not limited to being installed with a gap between the entire body and the first tube 111a or the second tube 111b. In other embodiments, a portion of the heating body 112 may be installed with a gap between it and the first tube 111a. The radial dimensions of a portion of the heating portion 1120 may be equal to the outer diameter of the first tube 111a, serving a positioning function. In some embodiments, a portion of the heating body 112 may be installed with a gap between it and the second tube 111b, and the radial dimensions of a portion of the heating portion 1120 may be equal to the radial dimensions of the second tube 111b.

[0076] In some embodiments, the heating element may be a plasma heating element. Specifically, both plasma heating elements and laser heating elements are central heating structures, i.e., at least a portion of the heating element is inserted into an aerosol generation matrix. A so-called plasma structure generally includes a glass sleeve and two electrodes placed within the glass sleeve and facing each other at a distance. When current is passed through the two electrodes, a high voltage is generated between the electrodes, the gaseous medium is ionized, a high-voltage arc is formed, and heat is generated. Therefore, the above method is similarly applicable to devices having a plasma structure, or to other heating elements that are heated using light waves and whose operating temperature can reach 500°C or higher.

[0077] The above description is merely a preferred embodiment of the present invention and does not limit it. Those skilled in the art will know that the present invention can be modified in various ways. Any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and principles of the present invention are included in the claims of the present invention.

Claims

1. A heating control method for a non-combustion heating device including a heating element for heating an aerosol-forming matrix, The process involves controlling the heating element at the start of heating to raise its temperature from the initial temperature to a first temperature and maintain that temperature, When the occurrence of a puffing motion is detected, the heating element is controlled to raise its temperature from the current temperature to a second temperature higher than the first temperature. A heating control method for a non-combustion heating device, characterized by including the step of controlling the heating element to lower its temperature from the current temperature to a third temperature lower than the second temperature when the end of the puffing operation is detected.

2. The heating control method for a non-combustion heating apparatus according to claim 1, characterized in that the heating element employs a heating method using infrared radiation to heat the aerosol-forming matrix, the heating element includes a heating body and a tube, the heating body includes a heating substrate and an infrared radiation layer installed on the outer surface of the heating substrate, the heating substrate is heated by energization and the infrared radiation layer is excited to emit infrared rays, the heating body is installed at least partially spaced apart from the tube wall of the tube, the tube wall of the tube transmits the infrared rays, and the infrared rays are used to heat the aerosol-forming matrix.

3. The first temperature is 100°C to 300°C, and / or The second temperature is 300°C to 400°C, and / or The heating control method for a non-combustion heating apparatus according to claim 2, characterized in that the third temperature is 100°C to 300°C.

4. The steps include controlling the first timer to start timing when heating begins, The steps include: when the occurrence of the first puffing operation is detected, controlling the first timer to stop timing and determining the preheating time based on the timing of the first timer; A heating control method for a non-combustion heating apparatus according to any one of claims 1 to 3, comprising the step of determining a second temperature corresponding to the first puffing operation based on the preheating time, wherein the second temperature corresponding to the first puffing operation is negatively correlated with the heating period within the preheating time.

5. The steps include: when the end of the i-1 puff operation is detected, control the second timer to start timing; A step in which, upon detecting the i-th puffing operation, the second timer is controlled to stop timing, and the warming time is determined based on the timing of the second timer, where i = 2, 3, ... A heating control method for a non-combustion heating apparatus according to any one of claims 1 to 3, further comprising the step of determining the second temperature corresponding to the i-th puffing operation based on the aforementioned heat retention time, wherein the second temperature corresponding to the i-th puffing operation is positively correlated with the heat retention time.

6. When the end of the puffing operation is detected, the step of statistically recording the current total number of puffs and / or cumulative heating time, A heating control method for a non-combustion heating apparatus according to any one of claims 1 to 3, further comprising the step of determining the third temperature based on the total number of puffs and / or cumulative heating time.

7. The step of determining the second temperature corresponding to the first puffing operation based on the preheating time is: A step of determining whether the heating time within the preheating time is less than a first predetermined time, If the heating time is less than a first predetermined time, the second temperature corresponding to the first puffing operation is determined to a first specific value. A heating control method for a non-combustion heating apparatus according to claim 4, characterized in that, if the heating time is greater than or equal to a first predetermined time, the second temperature corresponding to the first puffing operation is determined to be a second specific value smaller than the first specific value.

8. The step of determining the second temperature corresponding to the i-th puffing operation based on the aforementioned heat retention time is: A step of determining whether the aforementioned heat retention time is less than a second predetermined time, If the heat retention time is less than the second predetermined time, the second temperature corresponding to the i-th puff operation is determined to be a third specific value. The heating control method for a non-combustion heating device according to claim 5, further comprising the step of determining the second temperature corresponding to the i-th puffing operation to a fourth specific value greater than the third specific value, if the heat retention time is a second predetermined time or longer.

9. The step of controlling the heating element is: The steps include obtaining the temperature detected by the temperature measurement module in real time and obtaining the temperature detection value, A step of obtaining a target temperature value, wherein at the start of heating, the target temperature value is the first temperature, when the occurrence of puffing is detected, the target temperature value is the second temperature, and when the end of puffing is detected, the target temperature value is the third temperature. A heating control method for a non-combustion heating device according to claim 1, characterized by comprising the steps of performing a PID calculation on the temperature detection value and the temperature target value, and controlling the heating element based on the result of the PID calculation.

10. If it is determined that a predetermined stopping condition is met, the control to the heating element is stopped, The aforementioned predetermined stop conditions are The total number of puffs has reached the predetermined number, The cumulative heating time has reached the third predetermined time, A heating control method for a non-combustion heating device according to claim 1, further comprising the step of receiving at least one of the following: a stop command input by a user.

11. A computer storage medium that stores computer programs, The computer storage medium is characterized in that the computer program is executed by a processor to realize the steps of the heating control method for a non-combustion heating device described in any one of claims 1 to 10.

12. A non-combustion heating device comprising a processor and memory storing a computer program, The non-combustion heating apparatus is characterized in that the processor implements the steps of the heating control method for the non-combustion heating apparatus described in any one of claims 1 to 10 by executing the computer program.

13. It is a heating element, A heating element comprising a heating body and a tube, wherein the heating body is energized and heated using a heating control method described in any one of claims 1 to 10, and is used to emit infrared rays, the heating body is installed with at least a portion of the tube wall of the tube spaced apart, the tube wall of the tube transmits the infrared rays, and the infrared rays are used to heat an aerosol-forming matrix.

14. The heating element according to claim 13, wherein the heating element includes a heating substrate and an infrared radiation layer installed on the outer surface of the heating substrate, and the heating substrate is heated by an electric current and the infrared radiation layer is excited to emit infrared rays.

15. The heating element according to claim 13, wherein the tube is inserted into an aerosol generating matrix in at least a portion thereof and includes a main body and a tip portion installed at one end of the main body, and the heating body is installed at a distance from the inner wall of the main body.

16. The heating element according to claim 13, wherein the heating body is provided on the outer circumference of the tube, the tube is provided with a containment cavity, and at least a portion of the aerosol generation matrix is ​​contained in the containment cavity.

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