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

Abstract

A heating structure, a non-combustion heating device, and a heating control method thereof, the heating control method includes the steps of: in the preheating stage, performing heating control on a heating element (112) using a power control mode to preheat an aerosol forming matrix (200); and in the heating stage, acquiring the temperature detected by a temperature measuring module and performing heating control on the heating element (112) using a temperature control mode to maintain the temperature of the heating element (112) at a warming temperature.

Description

Technical Field

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

Background Art

[0002] In non-combustion heating devices, there are various types of heating elements. In the case of a heating element having a TCR (Temperature Coefficient of Resistance), the temperature of the heating element cannot be accurately measured from the resistance value of the heating element. Therefore, in order to measure the temperature inside the aerosol-forming matrix, it is necessary to add another temperature measuring device. However, the temperature measurement by the temperature measuring device has a delay. Particularly in the preheating stage, the temperature measured by the temperature measuring device does not accurately reflect the temperature inside the aerosol-forming matrix, so the heating temperature in the preheating stage cannot be effectively controlled.

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 heating temperature in the preheating stage cannot be effectively controlled.

Means for Solving the Problems

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows.

[0005] A heating control method for a non-combustion heating device including a heating element and a temperature measurement module, the heating process including a preheating stage and a heating stage following the preheating stage, The heating control method is In the preheating stage, performing heating control on the heating element using a power control mode to preheat the aerosol-forming matrix; The heating step includes acquiring the temperature detected by the temperature measurement module and performing heating control on the heating element using a temperature control mode, thereby maintaining the temperature of the heating element at a warming temperature.

[0006] Preferably, the step of preheating the aerosol-forming matrix includes preheating the aerosol-forming matrix using infrared radiation, The step of maintaining the temperature of the heating element at a predetermined heat retention temperature includes maintaining the temperature of the heating element at a predetermined heat retention temperature and heating the aerosol-forming matrix using infrared radiation.

[0007] Preferably, the preheating stage further includes a step of moving to the heating stage when the occurrence of the first puffing operation is detected or when the current preheating time reaches a first predetermined time.

[0008] Preferably, the preheating stage further includes the step of outputting a notification signal if the first puff operation is not detected within a second predetermined time which is less than or equal to the first predetermined time.

[0009] Preferably, the preheating temperature in the preheating step is 300°C to 400°C, and / or The temperature at which the heating is maintained during the aforementioned heating stage is 180°C to 380°C, and / or The first predetermined time is 1 to 10 seconds.

[0010] Preferably, the step of performing heating control on the heating element using a power control mode is: When heating is started, the initial temperature detected by the temperature measurement module is acquired, This includes determining the initial heating power of the heating element based on the initial temperature.

[0011] Preferably, the step of performing heating control on the heating element using a power control mode is: Heating control is performed on the heating element using a constant power control mode, or This includes performing heating control on the heating element using a variable power control mode.

[0012] Preferably, the heating step further includes a step of statistically determining the current total number of puffs and / or cumulative heating time, and adjusting the holding temperature based on the current total number of puffs and / or cumulative heating time.

[0013] Preferably, the step of acquiring the temperature detected by the temperature measurement module and performing heating control on the heating element by adopting a temperature control mode is: The temperature detected by the temperature measurement module is acquired in real time and used as the temperature detection value. The aforementioned heat retention temperature is set as the target temperature, The further includes performing a PID calculation on the temperature detection value and the temperature target value, and performing heating control on the heating element based on the results of the PID calculation.

[0014] Preferably, the step of stopping the heating control to the heating element when it is determined that a predetermined stopping condition is met, 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, and The further step includes at least one of the following: receiving a stop command entered by the user.

[0015] The present invention provides a computer storage medium that stores a computer program, wherein the computer program is executed by a processor to realize the steps of the heating control method for the non-combustion heating device described above.

[0016] The present invention relates to a non-combustion heating device comprising a processor and a memory storing a computer program, By executing the computer program, the processor provides a non-combustion heating device that realizes the steps of the heating control method of the non-combustion heating device described above.

[0017] The present invention also provides a heating structure including a heating element and a tube, wherein the heating element is energized and heated by adopting the heating control method of the non-combustion heating device described above, and is used to emit infrared rays. The heating element 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.

[0018] Preferably, the heating element 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.

[0019] Preferably, at least a part of the tube is inserted into the aerosol-forming 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.

[0020] Preferably, the heating element 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-forming matrix is accommodated in the receiving cavity.

Advantages of the Invention

[0021] When implementing the technical solution of the present invention, in the preheating stage, heating control is performed on the heating element using the power control mode. In the heating stage, the temperature detected by the temperature measurement module is acquired, and heating control is performed on the heating element using the temperature control mode. Such a stepwise control method uses the power control mode in the preheating stage, so even if there is a delay in the temperature initially measured by the temperature measurement module, it does not affect the heating control of the heating element and also helps to eliminate the differences in the operations of different devices. In the heating stage, since the temperature measured by the temperature measurement module can relatively accurately reflect the internal temperature of the aerosol-forming matrix, by controlling the heating element using the temperature control mode at this stage, the consistency of the aerosol mouthfeel can be guaranteed, and the energy consumption is also significantly reduced.

Brief Description of the Drawings

[0022] Hereinafter, the present invention will be further described with reference to the drawings and embodiments. In the drawings, [Figure 1] It is a flowchart of the first embodiment of the heating control method of the non-combustion heating device according to the present invention. [Figure 2] It is a temperature control graph of the heating aerosol-forming matrix according to the present invention. [Figure 3] It is a graph of the heating control of the heating element according to the present invention. [Figure 4] It is a structural diagram of the first embodiment of the non-combustion heating device according to the present invention. [Figure 5] It is a structural schematic diagram of the heat generation structure in the non-combustion heating device shown in FIG. 4. [Figure 6] It is a cross-sectional view of the heat generation structure shown in FIG. 5. [Figure 7] It is a structural decomposition schematic diagram of the heat generation structure shown in FIG. 5. [Figure 8] It is a structural schematic diagram of the second embodiment of the heat generation structure in the non-combustion heating device according to the present invention. [Figure 9] It is a structural schematic diagram of the heat generation structure shown in FIG. 8 viewed from another angle. [Figure 10] It is a cross-sectional view of the heat generation structure shown in FIG. 8. [Figure 11] Figure 8 is a schematic diagram of the exploded structure of the heat-generating structure. [Figure 12] This is a cross-sectional view of the heating element. [Modes for carrying out the invention]

[0023] 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.

[0024] Figure 1 is a flowchart of a first embodiment of a 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 a non-combustion heating device, which further includes a heating element, a power supply, a temperature measuring module, and the like. The power supply provides energy to the heating element. The temperature measuring module is used to detect the temperature. Specifically, the temperature detected by the temperature measuring module may be the temperature of the heating element, the temperature of the aerosol-forming matrix, or the temperature of the heating chamber. The heating element can take various forms, such as a heating cylinder, heating sheet, heating needle, heating rod, heating wire, or heating wire, and the heating element may be a combination of two or more different forms of heating devices.

[0025] As shown in Figure 1, the heating control method for the non-combustion heating device according to this embodiment includes the following steps S10 to S20. Step S10: In the preheating stage, heating control is performed on the heating element using the power control mode, thereby preheating the aerosol-forming matrix. 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, after heating has started, the temperature measured by the temperature measurement module has a delay and cannot accurately reflect the internal temperature of the aerosol-forming matrix. Also, because the temperature change in this stage is relatively large, accurate temperature control becomes difficult due to the delay in the measured temperature. Therefore, in this preheating stage, the heating element is heated with high power using a power control mode. That is, the processor controls only the magnitude of the heating power and the length of the heating time. For example, if the heating power is greater than 10W and the heating time is 1 to 10 seconds, the heating element is not controlled based on the temperature measured by the temperature measurement module. In this preheating stage, the heating element heats up rapidly and is accompanied by infrared radiation, so the preheating temperature of the aerosol-forming matrix can reach 300°C to 400°C (including endpoint values ​​and any value between the endpoints). This allows the aerosol-forming matrix to be heated to a state where vapor is generated in a short time, and furthermore, the puffing conditions can be met in 1 to 3 seconds. In this invention, high power generally refers to power of 5W or more. In some embodiments, during the preheating stage, the preheating temperature of the aerosol-forming matrix reaches 300°C to 400°C, but the local maximum operating temperature of the heating element (at least a portion of the area in contact with the aerosol-forming matrix) reaches approximately 550°C at this stage. Because the duration of this temperature is short and rapid heat dissipation is possible, scorching of the aerosol-forming matrix is ​​not caused.

[0026] Step S20: In the heating stage, the temperature detected by the temperature measurement module is acquired, and heating control is performed on the heating element using the temperature control mode, thereby maintaining the temperature of the heating element at the warming temperature.

[0027] In this step, after preheating, the system can move to the heating stage, during which the user can perform puffing. Furthermore, at this stage, the temperature change range between the aerosol-forming matrix and the heating element is relatively small, and the temperature measured by the temperature measurement module at this point (the temperature of the heating element in this embodiment) can reflect the heating temperature inside the aerosol-forming matrix with almost accuracy. Therefore, based on the temperature detected by the temperature measurement module, heating control is performed on the heating element using the temperature control mode, thereby maintaining the temperature of the heating element at the warming temperature. The warming temperature is 180°C to 380°C (including the endpoint value and any value between the endpoints). Specifically, when not puffing, the heating element can be controlled to cool down by not supplying power or by reducing the power, and once it cools down to the warming temperature, that warming temperature is maintained. When puffing by the user is detected, the temperature of the heating element decreases rapidly, and if the rate of temperature decrease is too fast and the temperature falls below the warming temperature, the heating element is controlled to heat up again until it reaches the warming temperature, and then the system waits for the next puffing operation. In some embodiments, during the heat retention phase, the aerosol-forming matrix is ​​in a state of continuous aerosol generation. This process corresponds to continuously pre-generating and storing at least one puff's worth of aerosol. After puffing, the temperature is lowered, then reheated to pre-generate and store aerosol, and this cycle is repeated. The heat retention temperature is preferably controlled to 200°C to 330°C (including endpoint values ​​and any value between the endpoints).

[0028] According to the technical solution of this embodiment, in the preheating stage, heating control is performed on the heating element using a power control mode, and in the heating stage, the temperature detected by the temperature measurement module is acquired, and heating control is performed on the heating element using a temperature control mode. This stepwise control method uses a power control mode in the preheating stage, so even if there is a delay in the temperature initially measured by the temperature measurement module, it does not affect the heating control of the heating element and also helps to eliminate differences in the operation of different devices. In the heating stage, the temperature change of the heating element is relatively small, and the temperature measured by the temperature measurement module at this time can reflect the temperature inside the aerosol formation matrix relatively accurately, and the delay in temperature feedback at this stage has little effect on temperature control. Therefore, by controlling the heating element using a temperature control mode at this stage, consistency in the mouthfeel of the aerosol can be guaranteed.

[0029] Furthermore, in one selectable embodiment, the heating control method of the present invention is The preheating stage further includes a step of moving to the heating stage when the occurrence of the first puffing operation is detected or when the current preheating time reaches a first predetermined time.

[0030] Furthermore, the heating control method of the present invention is The preheating stage further includes the step of outputting a notification signal if the first puff operation is not detected within a second predetermined time which is less than or equal to the first predetermined time.

[0031] In a specific embodiment, let's assume a first predetermined time of 6 seconds and a second predetermined time of 3 seconds. Then, after heating starts, the user is notified that puffing is possible after 3 seconds. If the user does not puff, after 6 seconds the controller controls the heating element to operate at low power.

[0032] Furthermore, in one selectable embodiment, the step of preheating the aerosol-forming matrix in step S10 includes preheating the aerosol-forming matrix using infrared radiation and also heating it by heat conduction. The step of maintaining the temperature of the heating element at a predetermined heat retention temperature in step S20 includes maintaining the temperature of the heating element at a predetermined heat retention temperature and heating the aerosol-forming matrix using infrared radiation. In this embodiment, since the aerosol-forming matrix is ​​heated using infrared radiation, the infrared wavelengths are mainly concentrated in the range of 2 μm to 4.75 μm (including endpoint values ​​and any values ​​between the endpoints) and 8 μm to 11 μm (including endpoint values ​​and any values ​​between the endpoints), and the heating element heats up to 500°C or more, and further to 1000°C or more, instantaneously (generally within 3 seconds), rapidly heating the aerosol-forming matrix via infrared radiation. As a result, the preheating time is very short, steam can be generated rapidly, and puffing can generally be achieved within about 3 seconds. Furthermore, infrared radiation has high penetrating power and ensures uniform heating, preventing energy from being excessively concentrated on specific points or surfaces. As a result, it quickly generates steam without burning, guaranteeing a consistent mouthfeel.

[0033] In a specific embodiment, the heating component structure includes a quartz tube and a heating element installed inside it. The heating element is installed at least partially spaced apart from the quartz tube and consists of a metal substrate and an infrared radiation layer on its outer surface. The heating element as a whole can be a single helix, double helix, or N-shaped structure formed by winding a heating wire, and can also be cylindrical, sheet-like, or columnar. A temperature measurement module may be provided in the quartz tube, for example, a temperature measurement film attached to the wall of the quartz tube. The heating principle of the heating element is as follows: The heating element heats the aerosol-forming matrix mainly by infrared radiation, and at the same time assists in heating by heat conduction of the heating element. Unlike conventional heating elements, the heating element of this embodiment reaches a maximum temperature of 1300°C, is generally 500-1000°C, and is preferably 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, particularly light waves with wavelengths of 2 μm to 4.75 μm, which are wavelengths that are easily absorbed by the aerosol-forming matrix and quickly heated.

[0034] Furthermore, in conventional technology, the local temperature of the heating element's heating portion is limited to a maximum of 420°C, but the temperature of the portion in contact with the aerosol-forming matrix is ​​controlled to approximately 350°C (some heating elements have a heating portion that directly contacts the aerosol-forming matrix, while others have a tube on the outer surface of the heating element, with the heating element in close contact with the tube, and the tube in contact with the aerosol-forming matrix, heating through physical contact heat conduction). However, in this configuration, the temperature of the heating element should not be set too high. At temperatures exceeding 420°C, the aerosol-forming matrix can rapidly generate steam, but the temperature of the portion in contact with the aerosol-forming matrix also rises excessively, and due to the large heat capacity of the heating element and heat conduction through physical contact, the subsequent temperature decrease becomes very slow. Prolonged high temperatures cause the aerosol-forming matrix to burn, which is a contradiction in achieving both "rapid steam generation" and "consistent mouthfeel" in existing products, and no effective solution has been found to date. Conventional heating elements cannot exceed a temperature of 420°C, and their low heat conduction efficiency through direct physical contact necessitates a long initial preheating time, generally requiring 15 seconds or more of preheating before proper puffing is possible. Furthermore, due to the low heat conduction efficiency, the temperature during the warming phase between puffs cannot be kept relatively low. Otherwise, the amount of aerosol produced in the next puff will be reduced, requiring warming at a relatively high temperature. Puffing the entire aerosol-forming matrix must be completed in approximately 5 minutes, because the aerosol-forming matrix essentially carbonizes completely in about 5 minutes.

[0035] In one embodiment of the present invention, a gap is provided between the heating element and the quartz tube, preferably so that the heating element does not come into complete contact with the quartz tube, or so that only the top portion comes into contact with the tip of the quartz 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 heating process is divided into the following two main stages. Preheating stage: The preheating time is very short, enabling rapid vapor generation, and puffing is generally possible in about 3 seconds. The reason is as follows: The heating element can rapidly heat 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. 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, and after the quartz tube heats up, it is transferred to the aerosol-forming matrix by heat conduction. Another portion of the energy is radiated as light waves, which the quartz tube absorbs and heats up, and then radiates infrared radiation to the outside. Therefore, the aerosol-forming matrix rapidly generates vapor because the tobacco matrix absorbs light waves with wavelengths of 2μm to 14μm and generates heat, and this efficiency is far higher than direct heat conduction. The heat conduction and thermal radiation of the quartz tube also play a certain role.

[0036] Steady-state heating phase: After the preheating phase, the user is informed that puffing is possible within, for example, 3 seconds. If the user does not puff, after about 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, the heating element can cool down rapidly after the power is reduced. 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, the cold outside air absorbs a large amount of heat, and the temperature of the aerosol-forming matrix and the quartz tube also decreases rapidly. After that, the heating element is kept at a low temperature or rapidly heated in conjunction with puffing to generate an aerosol.

[0037] Furthermore, in one selectable embodiment, step S10 involves performing heating control on the heating element using a power control mode. When heating is started, the initial temperature detected by the temperature measurement module is acquired, This includes determining the initial heating power of the heating element based on the initial temperature.

[0038] In this embodiment, the initial heating power can be determined based on the temperature detected by the temperature measurement module (which 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). Specifically, in a cold state, the initial temperature is low, so the required initial heating power is high. When not in a cold state, for example, when you finish smoking one cigarette and then smoke the next, the initial temperature is high, and the required initial heating power is low.

[0039] Furthermore, in one selectable embodiment, step S10 involves performing heating control on the heating element using a power control mode. Heating control is performed on the heating element using a constant power control mode, or This includes performing heating control on the heating element using a variable power control mode.

[0040] In this embodiment, during the preheating stage, a constant power control mode can be used, for example, heating with 15W of power for 3 seconds, or a variable power control mode can be used, for example, heating with 15W of power in the first second, 17W of power in the second second, and 14W of power in the third second. The variable power control mode is preferred. This is because under variable power control, the light wave and temperature are more uniform, resulting in a more consistent mouthfeel. Finally, it is assumed that steam can be generated quickly regardless of the power control mode.

[0041] Furthermore, in one selectable embodiment, the heating control method of the present invention is The further step includes statistically determining the current total number of puffs and / or cumulative heating time, and adjusting the holding temperature based on the current total number of puffs and / or cumulative heating time.

[0042] In this embodiment, the total number of puffs or cumulative heating time is statistically calculated each time a puffing action is detected, and the holding temperature can then be dynamically adjusted based on the total number of puffs and / or cumulative heating time. For example, the holding time can be gradually extended as the total number of puffs or cumulative heating time increases, thereby ensuring consistency in mouthfeel. Of course, in other embodiments, the holding temperature may be set to a fixed value.

[0043] Furthermore, in one selectable embodiment, the steps include acquiring the temperature detected by the temperature measurement module and performing heating control on the heating element using a temperature control mode, The temperature measurement module acquires the detected temperature in real time and uses it as the temperature detection value, and The aforementioned heat retention temperature is set as the target temperature, This includes performing PID calculations on the temperature detection value and the temperature target value, and performing heating control on the heating element based on the results of the PID calculations.

[0044] In this embodiment, as shown in Figures 2 and 3, curve L1 is the curve of the temperature actually detected by the temperature measurement module, curve L2 is the curve of the retained temperature, and curve L3 is the curve of the output power. The measured temperature is used as the temperature detection value, and the retained temperature is used as the temperature target value, and heating control of the heating element is performed based on a PID algorithm. Specifically, if the temperature measured by the temperature detection module exceeds the retained temperature, heating is stopped or the output power is reduced. If the temperature measured by the temperature detection module falls below the retained temperature, the output power is increased, thereby maintaining the temperature of the aerosol-forming matrix at a constant level near the retained temperature. In other words, during the heating phase, the aerosol-forming matrix is ​​always in a vapor-generating state until puffing occurs, extracting aerosols, which in turn cools the heating element. If the measured temperature falls below the retained temperature, the heating of the heating element is further controlled based on the difference between the measured temperature and the retained temperature to maintain the retained temperature again, and the aerosol-forming matrix continuously generates and accumulates vapor until the user's next puff.

[0045] Furthermore, the heating control method of the present invention is If it is determined that a predetermined stopping condition is met, the heating control for 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, and The further step includes at least one of the following: receiving a stop command entered by the user.

[0046] In this embodiment, heating of the heating element can be stopped when the total number of puffs reaches a predetermined number (for example, 10 to 16 times), 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).

[0047] The present invention also provides a computer storage medium for 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] Figure 4 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 low-temperature 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.

[0052] As shown in Figures 4 and 5, in this embodiment, the non-combustion heating device 100 further includes a heating structure 11 and a power supply component 20. The heating structure 11 is partially insertable into the aerosol-forming matrix 200, specifically, a portion of which 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 structure 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 structure 11.

[0053] As shown in Figures 5 to 7, in this embodiment, the heating structure 11 includes a tube 111, a heating element 112, and a base 113. The tube 111 covers at least a portion of the heating element 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 element 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 fix the tube 111 in place.

[0054] As shown in Figure 12, in this embodiment, the heating element 112 includes a heating base 1122 and an infrared radiation layer 1124. The heating base 1122 is heated by energizing it using the heating control method described above, and the infrared radiation layer 1124 is excited in the energized and heated state to generate and emit infrared rays. The infrared radiation layer 1124 is provided on the outer surface of the heating base 1122.

[0055] In some embodiments, the heating element 112 includes a heating base 1122 and an infrared radiation layer 1124 covering the outside of the heating base, wherein the heating base 1122 includes a metal base having high temperature oxidation resistance, such as a metal wire. The heating base 1122 can be a metal material having good high temperature oxidation resistance, high stability, and resistance to deformation, such as a nickel-chromium alloy base (e.g., nickel-chromium alloy wire) or an iron-chromium-aluminum alloy base (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 base) can be bent or wound to form heating sections of various shapes, for example, it can be bent and formed into a spiral columnar heating section 1120 as shown in Figures 5 to 7. Understandably, in other embodiments, the heating base may be wound to form a single helix, double helix, M-shaped, N-shaped, or other shape of heating section.

[0056] In some embodiments, the heating element further includes an antioxidant layer 1123, which is formed between the heating substrate 1122 and the infrared radiation layer 1124. Specifically, the antioxidant layer 1123 may be an oxide film. The heating substrate 1122 is heat-treated at a high temperature to generate a dense oxide film on its surface, which becomes the antioxidant layer 1123. Of course, it is understandable that in other embodiments, the antioxidant layer 1123 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 1122. The thickness of the antioxidant layer 1123 can be selected from 1 μm to 150 μm (including endpoint values ​​and any value between the endpoints).

[0057] In some embodiments, the infrared radiation layer 1124 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 1124 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 1124 may be 10 μm to 300 μm (including endpoint values ​​and any value between the endpoints).

[0058] In this embodiment, the tube wall of the tube 111 and the entire heating element 112 are spaced apart, for example, a gap 1114 is provided between the tube 111 and the heating element 112, and this gap 1114 may be used to fill with air. 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 element 112 do not come into direct contact. In some embodiments, a portion of the heating element 112 may be spaced apart from the tube wall of the tube 111. Specifically, the radial dimension of some segments of the heating element 1120 may be larger than the radial dimension 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 role. Of course, it is understandable that in some embodiments, the inside of the tube wall 111 may have a portion that protrudes toward the heating element 112 and contacts the heating element 112 to perform a positioning function. Of course, it is understandable that in other embodiments, the heating element 112 may not directly contact the tube wall of the tube 111 by providing isolation and positioning structures on the heating element 112 or the tube wall of the tube 111. For example, a ceramic ring may be provided on a portion of the segment of the heating element 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 state is also a type of gap. To obtain a better puff mouthfeel and extend the service life of the heating element, the tube 111 may also be configured to be vacuumed or to seal the open end.

[0059] 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 and are formed by bending a single heating element 112. 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 be two heating elements 112. Understandably, in other embodiments, the second heating element 112b may be omitted, and a non-heating conductive rod may be used instead.

[0060] The heating element 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 element 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.

[0061] 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.

[0062] In this embodiment, the tube 111 is a hollow tubular shape with both ends distributed along the axial direction and is used for insertion 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 element 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. 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 1111, insertion and removal of at least a portion of the heating structure 111 from 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 element 112 may be installed at intervals around 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.

[0063] In this embodiment, the tube wall of the tube 111 and the entire heating element 112 are spaced apart, for example, a gap 1114 is provided between the tube 111 and the heating element 112, and this gap 1114 may be used to fill with air. 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 element 112 do not come into direct contact. In some embodiments, the heating element 112 may be partially spaced apart from the tube wall of the tube 111. Specifically, a conductive portion 1121 may be provided at one end of the heating portion 1120, which is connected to the heating portion 1120 and may be drawn out from one end of the tube 111, passing through the base 113 and electrically connected to the power supply component 20. The radial dimension of some segments of the heating element 1120 may be larger than the radial dimension of other segments, and the radial dimension of some segments of the heating element 1120 may be equal to the inner diameter of the tube 111, thereby allowing it to serve a positioning role.

[0064] In this embodiment, at least a portion of the top of the heating element 112 is in contact with the inner wall surface of the tip portion 1112. This allows the end of the heating element 112 closest to the tip portion 1112 to perform a positioning function during installation, prevents the middle portion of the heating element 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 element 1120 closest to the tip portion 1112 from rising excessively.

[0065] Figures 8 to 11 show the heating structure 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 structure 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 structure 11 is placed over the outer circumference of the medium section of the aerosol-forming matrix 200, and the heating element 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-forming matrix is ​​contained in the containment cavity, and in this embodiment, the aerosol-forming matrix 200 is heated by a circumferential heating method.

[0066] 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 element 112 is housed. In some embodiments, the heating element 112 is wound around the outer circumference of the first tube 111a, and there is a gap 1114 between the entire heating element 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 element 112, thus providing insulation. In some embodiments, a reflective layer may be provided on the inner wall of the second tube 111b, which is used to reflect the heat of the heating element 112 and radiate it to the aerosol-forming matrix 200, thereby increasing the heating efficiency.

[0067] In other embodiments, the heating element 112 is not limited to being installed with a gap between the entire element and the first tube 111a or the second tube 111b. In other embodiments, a portion of the heating element 112 may be installed with a gap between it and the first tube 111a. The radial dimensions of a portion of the heating element 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 element 112 may be installed with a gap between it and the second tube 111b, and the radial dimensions of a portion of the heating element 1120 may be equal to the radial dimensions of the second tube 111b.

[0068] In some embodiments, the heating element may be a plasma heating structure. Specifically, both plasma heating structures and laser heating structures are central heating structures, that is, at least a portion of the heating element is inserted into an aerosol-forming matrix. A so-called plasma structure generally includes a glass tube and two electrodes placed inside the glass tube 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 equally applicable to instruments having a plasma structure, or to other heating structures that are heated using light waves and whose heating element can reach an operating temperature of 500°C or higher.

[0069] 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 and a temperature measuring module, The heating process includes a preheating step and a heating step following the preheating step. The aforementioned heating control method is In the preheating stage, the heating element is controlled using a power control mode to preheat the aerosol-forming matrix. A heating control method for a non-combustion heating device, characterized in that the heating step includes the step of acquiring the temperature detected by the temperature measurement module and performing heating control on the heating element using a temperature control mode, thereby maintaining the temperature of the heating element at a predetermined heat retention temperature.

2. The step of preheating the aerosol-forming matrix is, This includes preheating the aerosol-forming matrix using infrared radiation, The step of maintaining the temperature of the heating element at a predetermined heat retention temperature is: A heating control method for a non-combustion heating apparatus according to claim 1, characterized in that it includes maintaining the temperature of the heating element at a predetermined heat retention temperature and heating the aerosol-forming matrix using an infrared radiation method.

3. The heating control method for a non-combustion heating apparatus according to claim 1, further comprising the step of moving to the heating stage when the occurrence of the first puffing operation is detected in the preheating stage, or when the current preheating time reaches a first predetermined time.

4. The heating control method for a non-combustion heating apparatus according to claim 3, further comprising the step of outputting a notification signal if the first puffing operation is not detected within a second predetermined time which is less than or equal to the first predetermined time, during the preheating stage.

5. The preheating temperature in the aforementioned preheating step is 300°C to 400°C, and / or The temperature at which the heating is maintained during the aforementioned heating stage is 180°C to 380°C, and / or The heating control method for a non-combustion heating apparatus according to claim 3, characterized in that the first predetermined time is 1 to 10 seconds.

6. The step of performing heating control on the heating element using a power control mode is: When heating is started, the initial temperature detected by the temperature measurement module is acquired, A heating control method for a non-combustion heating device according to claim 1, characterized by comprising determining the initial heating power of the heating element based on the initial temperature.

7. The step of performing heating control on the heating element using a power control mode is: Heating control is performed on the heating element using a constant power control mode, or A heating control method for a non-combustion heating device according to claim 1, characterized in that it includes performing heating control on the heating element using a variable power control mode.

8. The heating control method for a non-combustion heating apparatus according to claim 1, further comprising the step of statistically calculating the current total number of puffs and / or cumulative heating time in the heating stage, and adjusting the holding temperature based on the current total number of puffs and / or cumulative heating time.

9. The step of acquiring the temperature detected by the temperature measurement module and performing heating control on the heating element using the temperature control mode is: The temperature detected by the temperature measurement module is acquired in real time and used as the temperature detection value. The aforementioned heat retention temperature is set as the target temperature, A heating control method for a non-combustion heating device according to any one of claims 1 to 8, comprising performing a PID calculation on the temperature detection value and the temperature target value, and performing heating control on the heating element based on the result of the PID calculation.

10. If it is determined that a predetermined stopping condition is met, the heating control for 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, and 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: receiving 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 executes the computer program to realize the steps of the heating control method for the non-combustion heating apparatus described in any one of claims 1 to 10.

13. It is a heat-generating structure, A heating structure comprising a heating element and a tube, wherein the heating element is energized and heated using a heating control method for a non-combustion heating device described in any one of claims 1 to 10, and is used to emit infrared rays, the heating element is installed with at least a portion of its length separated 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 an aerosol-forming matrix.

14. The heating element comprises a heating substrate and an infrared radiation layer installed on the outer surface of the heating substrate, wherein the heating substrate is heated by an electric current and the infrared radiation layer is excited to emit infrared rays, characterized in that the heating structure is as described in 13.

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

16. The heating structure according to claim 13, characterized in that the heating element 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-forming matrix is ​​contained in the containment cavity.

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