CN216701667U - Hybrid heating device and aerosol generating device - Google Patents

Abstract

The application relates to a mix heating device and aerosol generation device includes: an airflow heater located upstream of the aerosol substrate for heating an airflow to the aerosol substrate; a compensation heater disposed offset from an upstream section of the aerosol substrate for heating the aerosol substrate; a connecting tube for receiving at least an upstream section of the aerosol substrate. The compensation heater is located after the upstream section of the aerosol substrate and generates heat which increases the temperature of the aerosol substrate in its respective section, thereby preventing the temperature of the air stream heated by the air stream heater from dropping, thereby ensuring that the air stream heated by the air stream heater continues to toast the aerosol substrate outside the upstream section and generate a sufficient amount of volatiles.

Description

Hybrid heating device and aerosol generating device

Technical Field

The embodiment of the utility model relates to the technical field of aerosol generation, in particular to a mixing and heating device and an aerosol generating device.

Background

Aerosol-generating devices typically comprise a heater and a power supply component for powering the heater, the heater being for heating the aerosol substrate to generate the aerosol.

The existing heater is usually a contact heater, and an aerosol substrate (such as a cigarette) is heated by central heating or circumferential heating and the like, the heating mode mainly heats the aerosol substrate by direct heat conduction, however, the contact heating mode has the defect of uneven heating, namely, the temperature of a part directly contacted with a heating element is higher, and the temperature of a part far away from the heating element is rapidly decreased, so that only the aerosol substrate close to the heating element can be completely baked, and thus, a part of the aerosol substrate far away from the heating element cannot be completely baked, which not only causes great waste of the aerosol substrate, but also causes insufficient aerosol quantity. If the heating element temperature is increased to improve the baking efficiency, the aerosol substrate near the heating element is easily burnt or carbonized, which not only affects the taste, but also leads to a large increase in harmful components.

A typical non-contact heater used in aerosol generating devices of the prior art uses airflow heating means which heats the aerosol substrate primarily by heating the airflow flowing into the aerosol substrate by means of the fluidity of the high temperature airflow, thereby ensuring adequate heat exchange between the airflow and the aerosol substrate. However, the temperature of the hot gas stream is gradually reduced during heat exchange with the aerosol substrate, resulting in the aerosol substrate in the downstream portion of the gas stream not being sufficiently baked by the hot gas stream to produce sufficient volatiles, which can not only affect taste, but also result in substantial waste of aerosol substrate.

SUMMERY OF THE UTILITY MODEL

An object of an embodiment of the present application includes providing a hybrid heating device and an aerosol generating device that employ air flow heating to bake an aerosol substrate and compensate for the heating by the air flow to ensure adequate vaporization of the aerosol substrate.

An aerosol generating device provided by the embodiment of the application comprises:

an elongate chamber for receiving at least a portion of an aerosol substrate;

a gas flow heater upstream of the chamber for heating a gas flow to the chamber; and

a compensation heater positioned within or adjacent to the chamber for heating a localized section of the aerosol substrate;

wherein the compensation heater is configured to be spaced from the airflow heater in a lengthwise direction of the chamber such that a portion of the aerosol substrate can be positioned between the compensation heater and the airflow heater when the aerosol substrate is received in the chamber.

Embodiments of the present application provide a mixing and heating device for an aerosol-generating device for heating an aerosol substrate to generate an aerosol, comprising:

an airflow heater for heating an airflow;

a compensation heater spaced from the gas flow heater for heating a localized section of the aerosol substrate; and

a connecting tube connected between the airflow heater and the compensation heater, the connecting tube configured to receive a portion of the aerosol substrate and to receive an airflow heated by the airflow heater to enable the airflow to enter into the aerosol substrate.

The embodiment of this application provides aerosol generating device, includes above-mentioned mixing heating device.

In the above hybrid heating device and aerosol generating device, the compensating heater is located after the upstream section of the aerosol substrate, and the heat generated by the compensating heater can raise the temperature of the aerosol substrate in the corresponding section, thereby preventing the temperature of the airflow heated by the airflow heater from dropping, and therefore ensuring that the airflow heated by the airflow heater can continuously bake the aerosol substrate outside the upstream section to generate a sufficient amount of volatile substances.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1 is an exploded view of an airflow heater according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an assembly of an airflow heater provided by an embodiment of the present application;

FIG. 3 is a cross-sectional view of an airflow heater provided by an embodiment of the present application;

FIG. 4 is a schematic view of an upper connection sleeve of the airflow heater provided by an embodiment of the present application;

FIG. 5 is a schematic view of a lower connection sleeve of the airflow heater according to an embodiment of the present application;

FIG. 6 is a schematic representation of a susceptor in an embodiment of the present application;

FIG. 7 is a cross-sectional view of a susceptor in an embodiment of the present application;

FIG. 8 is a cross-sectional view of another susceptor in an embodiment of the present application;

FIG. 9 is a schematic view of a magnetic sensor according to an embodiment of the present application;

FIG. 10 is a schematic view of a portion of a foam structure susceptor in one embodiment of the present application;

figure 11 is a schematic diagram of an aerosol generating device provided by an embodiment of the present application;

FIG. 12 is a cross-sectional view of an airflow heater provided in accordance with another embodiment of the present application;

FIG. 13 is a top view of an airflow heater provided in accordance with yet another embodiment of the present application;

FIG. 14 is a top view of an airflow heater provided in accordance with yet another embodiment of the present application;

FIG. 15 is a top view of an airflow heater provided in accordance with yet another embodiment of the present application;

FIG. 16 is a cross-sectional view of a hybrid heating device according to yet another embodiment of the present application;

FIG. 17 is a schematic view of a hybrid heating device according to yet another embodiment of the present application;

FIG. 18 is a schematic view showing the development of a resistance heat generating body in another embodiment of the present application;

FIG. 19 is an assembled schematic view of a hybrid heating device provided in accordance with an embodiment of the present application;

FIG. 20 is a cross-sectional view of a hybrid heating device provided in accordance with an embodiment of the present application;

FIG. 21 is a graph showing the results of temperature distribution measurements taken with an aerosol substrate having an axial length of 20 mm;

in the figure:

1. cigarettes; 11. an aerosol substrate; 12. a suction nozzle;

2. an air flow heater;

21. a susceptor; 211. air holes; 212. a through hole; 213. a magnetic inductor; 214. a groove;

22. connecting sleeves are arranged; 221. a first portion; 222. a second portion; 223. a first step structure; 224. a protrusion; 225. an air flow mixing chamber;

23. a lower connecting sleeve; 231. a third portion; 232. a fourth part; 233. a second step structure; 234. a notch;

24. a temperature sensing component; 241. a first thermocouple; 242. a second thermocouple; 25. a generator; 26. a power supply component; 261. an electric control board;

271. an inductor; 2711. a barrel; 2712. a common wall; 272. an electrode; 2721. a pin; 273. a resistance heating element;

28. a temperature equalizer;

3. a compensation heater;

4. and (4) connecting the pipes.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

An embodiment of the present application provides an aerosol-generating device and a hybrid heating device for an aerosol-generating device for heating an aerosol substrate to cause the aerosol substrate to generate volatiles, comprising an elongate chamber, an airflow heater, a compensation heater and a connecting tube.

The elongated chamber is for receiving at least a portion of an aerosol substrate.

The airflow heater generates high-temperature airflow which can heat and volatilize the aerosol substrate by heating the airflow, and then the high-temperature airflow enters the aerosol substrate to heat the aerosol substrate by utilizing the fluidity of the airflow, so that the aerosol substrate can be heated uniformly, the aerosol amount formed by volatilization of the aerosol substrate under the baking of the high-temperature airflow is increased, the waste of the aerosol substrate can be reduced, and harmful substances in the aerosol substrate can be reduced.

Referring to fig. 1, the airflow heater 2 includes a susceptor 21.

The inductor 21 may be a magnetic body, and when an alternating magnetic field is applied to the magnetic body, energy loss due to eddy current loss (eddy current loss) and hysteresis loss (hysteresis loss) occurs in the magnetic body, and the lost energy is released from the magnetic body as heat energy. The larger the amplitude or frequency of the alternating magnetic field applied to the magnetic body, the more thermal energy can be released from the magnetic body.

In some embodiments, susceptor 21 may comprise a metal or carbon. The susceptor may include at least one of ferrite (ferrite), ferromagnetic alloy (ferromagnetic alloy), stainless steel (stainless steel), and aluminum (Al). In addition, the susceptor may further include at least one of a ceramic such as graphite (graphite), molybdenum (molybdenum), silicon carbide (silicon carbide), niobium (niobium), nickel alloy (nickel alloy), metal film (metal film), zirconium dioxide (zirconium), a transition metal such as nickel (Ni) or cobalt (Co), and a metalloid such as boron (B) or phosphorus (P).

In some embodiments, referring to fig. 1-10, susceptor 21 may be provided with a gas stream passing therethrough.

Referring to fig. 3, 6 and 8, the susceptor 21 may have air passages for air flow therethrough, which may be regular air passages along which air flow may flow into and out of the susceptor 21. Referring to fig. 10, the material of the susceptor 21 has continuous pores of a microporous structure therein, and air flows through the pores, flowing in from one side of the susceptor 21, and flowing out from the other side of the susceptor 21. In other embodiments, the susceptor may contain both regular air channels and random apertures through which air flows from one side of the susceptor and then out the other side of the susceptor. When the susceptor generates heat in the alternating magnetic field, the air flow is heated by the susceptor during the flowing process in the susceptor.

The higher the temperature of the air stream flowing through the susceptor, the more thoroughly and uniformly the air stream is heated by the susceptor, and the more the aerosol substrate is volatilized to produce a high quality aerosol.

Referring to fig. 1-3 and 6-8, in some embodiments, the susceptor 21 is configured to have a porous honeycomb structure, and the gas flow is divided into a plurality of gas paths, flows through the honeycomb structure, and exchanges heat with the susceptor 21 in the gas paths, thereby being heated to a high temperature gas flow within a predetermined temperature range. Referring to fig. 3 and 8, the susceptor of the honeycomb structure has a large number of air holes 211, each air hole 211 has an air passage for passing an air flow, and the cross section of the air hole 211 may be circular, polygonal or elliptical, so that the air flow can be divided into a plurality of small air flows through the large number of air holes 211 on the susceptor 21, the overall heat exchange area of the air flow is increased, and the air flow is ensured to be heated rapidly and sufficiently, and the air flow is heated uniformly.

The honeycomb-structure susceptor 21 can self-heat, and has smaller heat capacity and faster heat transfer rate than ceramics and glass, so that the energy distribution of non-hole parts in the susceptor 21 is more uniform, and each part of the susceptor 21 has no obvious temperature gradient, thereby being capable of heating a plurality of small air flows passing through each air passage in the susceptor 21 to basically the same temperature, and enabling the air flow to be heated uniformly. When the air flow with uniform heat at each position enters the hot aerosol substrate carrier to contact with the aerosol substrate, the aerosol substrate can be heated more uniformly, so that high-quality aerosol is generated.

In some embodiments, the susceptor 21 is a honeycomb structure formed by machining through holes or powder metallurgy or MIN injection molding, and the air holes 211 may be straight air holes (as shown in fig. 3 and 8), wherein the air holes 211 of the susceptor 21 shown in fig. 3 are square holes with uniform width at each part, and the air holes 211 of the susceptor 21 shown in fig. 8 are tapered holes with non-uniform width at each part. Specifically, referring to fig. 6, the air holes 211 may also be circular holes with uniform width at each position, the aperture of the circular hole may be 0.1-2mm, for example, 0.6mm, 1mm, 1.5mm, etc., the distance between two adjacent air holes 211 may be 0.1-0.5mm, for example, 0.2mm, 0.4mm, etc., the height of the susceptor 21 may be 3-7mm, for example, 3mm, 5mm, 7mm, etc., the overall shape of the susceptor 21 may be cylindrical, and the diameter of the circular surface thereof may be 5-9mm, for example, 5mm, 7mm, 9mm, etc. In other embodiments, the shape of the susceptor 21 may be polygonal, elliptical, or the like.

In some embodiments, at least some of the gas passages of the susceptor 21 may be inclined relative to a central axis of the susceptor 21, or at least some of the gas passages may be curved, and both the inclined gas passages and the curved gas passages may increase the length of the gas passages, so that the time of the gas flow in the susceptor 21 is prolonged, thereby ensuring that the gas flow is sufficiently heated.

In some embodiments, referring to fig. 7 and 8, at least a portion of the air passages in the sensor body 21 are shaped air passages, each shaped air passage has at least two different widths, that is, a wide portion and a narrow portion, and the cross-sectional area of the wide portion is larger than that of the narrow portion, so as to influence the flow rate or speed of the air flow through the narrow portion in the air passage, and even bounce a portion of the air flow, so as to make the air flow stay at least for a short time, so that the air flow is heated in the sensor body 21 for a longer time, and the air flow is sufficiently heated. Referring to fig. 8, the shaped air path may be a tapered air path, and an upstream area of the tapered air path may have a larger width or cross-sectional area than a downstream area thereof, so that the air path in the tapered air path is narrowed from wide to narrow, and thus the time for the air flow to leave the air path can be prolonged, so as to prolong the time for the air flow to stay in the susceptor 21, so that the air flow is sufficiently and rapidly heated, and the air flow is heated uniformly overall.

In some embodiments, referring to fig. 10, the susceptor 21 is a foam structure having continuous pores, the pores in the foam structure may have different sizes, the pores in the foam structure may be distributed inside and outside the susceptor 21 in a criss-cross manner, and the pores in the foam structure may have a rough surface, which may be uneven or have a plurality of micropores, which may be connected with other pores. The continuous pores within the porous material are interconnected to allow gas flow from one side of the susceptor 21 to the other. When the air current passes through the susceptor 21 with the foam structure, the air current can be fully contacted with the susceptor 21, and the air current has a very large heat exchange area, so that the air current can be fully and rapidly heated by the susceptor 21, and the air current is uniformly heated in the whole. In some implementations, the velocity of the gas stream flowing through the susceptor 21 can be adjusted by adjusting the average pore size or porosity during the fabrication of the porous material.

Specifically, referring to fig. 10, the susceptor 21 may have a honeycomb structure or a foam tube structure prepared by sintering a powder containing a magnetic material after molding, and the powder of the magnetic material may be Fe — Ni powder, etc., but is not limited thereto.

In some embodiments, referring to fig. 7, in order to facilitate the shape control of the air passages, the sensor body 21 may include a plurality of magnetic sensors 213, each of the magnetic sensors 213 has a plurality of through holes 212 for the air flow to pass through, the plurality of magnetic sensors 213 are stacked on each other, and the through holes 212 of the magnetic sensors 213 communicate with each other, so as to form a plurality of air passages on the sensor body 21. Such as: when the through holes 212 of the magnetic sensors 213 in the sensor body 21 are coaxially communicated with each other, a straight air passage can be formed; when the through holes 212 on part of the magnetic inductors 213 in the inductor 21 are communicated with each other in a staggered way, a bent air passage can be formed; when the magnetosensitive bodies 213 in the sensor body 21 are connected in a staggered manner in the same direction, an inclined air passage can be formed. Thereby controlling the shape of the gas path according to the misalignment when the magnetic sensors 213 are stacked

In some embodiments, referring to fig. 9, the magnetic sensor 213 is a sheet structure having a plurality of through holes 212, the through holes 212 on the sheet structure can be formed by etching, the thickness of each magnetic sensor 213 can be 0.1-0.4mm, such as 0.1mm, 0.25mm, 0.4mm, etc., and the sensor 21 can be formed by stacking and welding 20-40 magnetic sensors 213. Alternatively, referring to fig. 7, the magnetic sensors 213 are block-shaped structures, each of the magnetic sensors 213 may have a thickness of 0.5-1.5mm, such as 0.5mm, 1mm, 1.5mm, etc., the sensor body 21 may be formed by stacking and welding 2-10 magnetic sensors 213, and in other embodiments, each of the block-shaped magnetic sensors 213 may be formed by stacking a plurality of magnetic sensors 213.

Further, referring to fig. 7, in the stacked magnetic inductors 213, all the through holes 212 on the same gas path are coaxial and have the same hole type and hole diameter, so that the formed gas path has almost the same hole diameter, no obvious wide portion and narrow portion, and the formed gas path is a straight gas path without bending.

Furthermore, the same air passage in the mutually stacked magnetic induction bodies can be at least provided with two through holes which are coaxial, but the two through holes can have different cross sectional areas due to different hole patterns or hole diameters, so that the same air passage has wide parts and narrow parts with different cross sectional areas, when the air flow flows along the air passage, the narrow parts can prevent the air flow from being popular, and the air flow can be at least retained for a short time, so that the time for the air flow to stay in the induction body is prolonged, the air flow is fully and rapidly heated, and the air flow is generally uniformly heated.

Further, referring to fig. 7, the through holes 212 on the same air path in the magnetic inductors 213 stacked with each other may have different hole patterns or hole diameters, or may have the same hole pattern or hole diameter, but at least two through holes 212 on the same air path in the magnetic inductors 213 stacked with each other are in staggered communication, and after the through holes are in staggered communication, the local air path may shrink to form a narrow portion. Referring to fig. 7, the through holes 212 in two adjacent magnetic inductors 213 are partially staggered one by one, so that each air path can have a smaller cross-sectional area than the cross-sectional area of the through hole 212 at the staggered position, i.e. a narrow portion is formed at the staggered position, and when the air flow enters the downstream through hole 212 from the upstream through hole 212, the air path is narrowed due to the width, so that the air flow stays for at least a short time, thereby prolonging the time for which the air flow stays in the inductors, fully heating the air flow, and uniformly heating the air flow as a whole.

Further, referring to fig. 7, the stacked magnetic sensors 213 at least have two magnetic sensors 213, and satisfy: at least one through hole 212 in the magnetic inductor 213 located upstream of the air flow can be simultaneously communicated with at least two through holes 212 in the downstream magnetic inductor 213, so as to divide the air flow in the upstream through hole 212 into the downstream magnetic inductor 213 at least in two, that is, the distribution density of the through holes 212 in the upstream magnetic inductor 213 is smaller than that of the through holes 212 in the downstream magnetic inductor 213, or the spacing between two adjacent through holes 212 in the downstream magnetic inductor 213 is smaller than the aperture of the through holes 212 in the downstream magnetic inductor 213, or the aperture of the through holes 212 in the upstream magnetic inductor 213 is several times larger than that of the through holes 212 in the upstream magnetic inductor 213, so that one through hole 212 in the upstream magnetic inductor 213 can be simultaneously communicated with a plurality of through holes 212 in the downstream magnetic inductor 213. When the airflow enters the downstream through hole 212 from the upstream through hole 212, the air path is branched, the airflow is divided into at least two paths again, and the narrow part is positioned at the branch of the air path, so that the airflow can be retained at least for a short time, the time for the airflow to stay in the susceptor is prolonged, the airflow is sufficiently and rapidly heated, and the airflow is uniformly heated overall.

Further, in the same air passage of the stacked magnetic inductors 213, at least one through hole 212 has a wide portion and a narrow portion, so that the air passage has a wide portion and a narrow portion. Fig. 8 illustrates a cross-sectional view of a magnetic sensor 213 in the sensor body 21, and the through hole 212 in the magnetic sensor 213 may be a tapered hole, and the diameter of the through hole in the upstream section is larger than that in the downstream section, so that the air path of the air flow in the through hole is narrowed from wide to narrow, and the air flow can be retained at least for a short time, thereby prolonging the time for which the air flow stays in the sensor body, enabling the air flow to be heated sufficiently and rapidly, and the air flow to be heated uniformly as a whole.

In order to make the temperature of the air flow for heating the aerosol substrate more uniform, in some embodiments, referring to fig. 1-4, the hybrid heating device further comprises an air flow mixing chamber 21, the air flow mixing chamber 21 is located between the sensing body 21 and the aerosol substrate 11 or the aerosol substrate carrier to mix the air flow flowing out from each air path in the sensing body 21, so as to equalize the heat of the air flow flowing out from each air path and make the temperature of the air flow for heating the aerosol substrate 11 more uniform.

Further, referring to fig. 1-4, the mixing and heating device further includes an upper connection sleeve 22 through which the airflow can pass, the upper connection sleeve 22 is a tubular structure, one end of the upper connection sleeve 22 is connected to the susceptor 21, the other end of the upper connection sleeve extends away from the susceptor 21 and away from the susceptor 21, and is a free end, the free end is used for supporting the aerosol substrate 11 or the aerosol substrate carrier, the airflow mixing chamber 21 can be located between the free end, the susceptor 21 and the upper connection sleeve 22, the airflow flowing out from the susceptor 21 firstly enters the airflow mixing chamber 21, and heat equalization is performed in the airflow mixing chamber 21. The temperature of the airflow just after the susceptor 21 is highest because the temperature of the airflow gradually decreases as it exchanges heat with the aerosol substrate 11 and thus as it flows through the aerosol substrate. The air mixing chamber 21 is positioned between the aerosol substrate 11 or the aerosol substrate carrier and the susceptor 21, and can also space the aerosol substrate 11 or the aerosol substrate carrier and the susceptor 21 from each other, thereby preventing the aerosol substrate 11 (such as a cigarette) from being burnt by directly contacting the susceptor 21 in a high temperature heating state and the high temperature air flow just coming out of the susceptor 21.

Further, referring to fig. 4, the upper connection sleeve 22 includes a first portion 221 and a second portion 222, the first portion 221 and the second portion 222 may be coaxial, the airflow mixing chamber 21 is located in the first portion 221, the second portion 222 is sleeved on a side surface of the susceptor 21, an inner diameter of the first portion 221 is smaller than an inner diameter of the second portion 222, so that the inner wall of the upper connection sleeve 22 has a first step structure 223, and an upper end of the susceptor 21 can abut against the first step structure 223. The outer diameter of the first part 221 and the outer diameter of the second part 222 may be equal, the wall thickness of the first part 221 being larger than the wall thickness of the second part 222, so that the free end in the upper connecting sleeve 22 has a larger annular area (support area) and may thus better support the aerosol substrate or aerosol substrate carrier.

Alternatively, the upper connecting sleeve 22 can be made of an insulating material with low thermal conductivity, such as zirconia ceramics, high temperature resistant plastics such as PBI (the low thermal conductivity is a thermal conductivity less than that of metal in the present application), so as to slow down the temperature dissipation speed in the airflow mixing chamber 21. Further, an insulating layer may be disposed at least in a local region outside or inside the upper connecting sleeve 22 to reduce heat transfer to the outside.

In one embodiment, as shown in fig. 3, the aerosol generating device further comprises a baffle net 7, the baffle net 7 is located between the aerosol substrate 11 and the susceptor 21 along the flowing direction of the air flow, and the baffle net 7 is provided with a plurality of holes for the air flow to pass through, so that the air heated by the susceptor 21 can pass through and then flow into the aerosol substrate 11 located downstream of the baffle net 7 along the flowing direction of the air flow. The baked aerosol substrate 11 generally becomes brittle and fragile, and if the aerosol substrate 11 is broken or broken during the process of taking out the aerosol substrate 11 from the container 6, the dropped substance falls on the blocking net 7, that is, the blocking net 7 can prevent the dropped substance such as dregs, scraps or residues on the aerosol substrate 11 from falling onto the susceptor 21 and further blocking the susceptor 21.

In an alternative embodiment, the dam net 7 may be disposed downstream of the upper connection sleeve 22 and spaced apart from the upper connection sleeve 22 so that any falling objects such as dross, chips or residues on the aerosol substrate 11 do not fall into the interior of the upper connection sleeve 22. In another alternative embodiment, the dam net 7 may be disposed on the upper connection sleeve 22 and contact the free end of the upper connection sleeve 22 so that the falling objects such as dregs, debris or residues on the aerosol substrate 11 do not fall into the inside of the upper connection sleeve 22. In yet another alternative embodiment, the dam net 7 may be arranged inside the upper connection sleeve 22. In other alternative embodiments, the blocking net 7 may be disposed in the container 6 and detachably connected to the container 6, so that the blocking net 7 may be taken out to clean up the dropping objects such as dregs, chips or residues thereon and prevent the blocking net 7 from being blocked.

In an alternative embodiment, the baffle net 7 can replace the upper connecting sleeve 22 to support the aerosol substrate 11 or the aerosol substrate carrier, that is, the baffle net 7 can replace the upper connecting sleeve 22, so in this embodiment, the baffle net 7 can support the aerosol substrate 11 or the aerosol substrate carrier, isolate the susceptor 21 from the aerosol substrate or provide an air space between the susceptor 21 and the aerosol substrate, and can also receive falling objects such as dregs, debris or residues from the aerosol substrate 11, so as to prevent the falling objects from blocking the susceptor 21.

In order to make the blocking net 7 well block the falling objects such as dregs, debris or residues on the aerosol substrate 11, the mesh holes on the blocking net 7 have smaller pore sizes, and in some embodiments, the pore sizes of the holes on the blocking net 7 may be smaller than the pore sizes of the air passages in the susceptor 21. In some embodiments, the striker net 7 is configured as a net structure with a large number of evenly distributed mesh openings.

Further, referring to fig. 1-3 and 5, the hybrid heating device further includes a lower connection sleeve 23 through which the air flow can pass, the lower connection sleeve 23 is a tubular structure, one end of the lower connection sleeve 23 is connected to the susceptor 21, the other end of the lower connection sleeve extends in a direction away from the susceptor 21 so as to be away from the susceptor 21, and the lower connection sleeve 23 is a free end which is an anti-collision end and is used for protecting the susceptor 21 from being collided.

Optionally, the lower connecting sleeve 23 may be made of an insulating material with low thermal conductivity, such as zirconia ceramic, and high temperature resistant plastics such as PBI, so as to reduce the heat of the sensor 21 from being transferred outwards, avoid energy waste, and improve the energy utilization rate. The lower connection sleeve 23 is generally higher in thermal conductivity than air, so that the lower connection sleeve 23 can be designed to be as small as possible, and it is preferable that the lower connection sleeve 23 and the upper connection sleeve 22 have a space therebetween so as not to contact each other.

Optionally, referring to fig. 5, the lower connection sleeve 23 includes a third portion 231 and a fourth portion 232, the third portion 231 and the fourth portion 232 may be coaxial, the third portion 231 is sleeved on a local side surface of the susceptor 21, the fourth portion 232 is located outside the susceptor 21, and an inner diameter of the third portion 231 is greater than an inner diameter of the fourth portion 232, so that a second step structure 233 is provided in an inner wall of the lower connection sleeve 23, and a lower end of the susceptor 21 may be supported by the second step structure 233. The outer diameter of the third portion 231 and the outer diameter of the fourth portion 232 may be equal, and the wall thickness of the fourth portion 232 is greater than that of the third portion 231, so as to better protect the sensor body 21 from being impacted.

Referring to fig. 2, the susceptor 21 can be fixed in the connection pipe 4 by an upper connection sleeve 22 and a lower connection sleeve 23, thereby forming a part of the aerosol generating device.

In some embodiments, referring to fig. 1-3, the hybrid heating device further includes a temperature sensing assembly 24, wherein the temperature sensing assembly 24 is connected to the susceptor 21 for detecting the temperature of the susceptor 21 or for checking the temperature of the susceptor 21 together with the susceptor 21.

In some embodiments, the temperature sensing component 24 may be a thermocouple, the thermocouple includes a hot end and a cold end, the hot end is a temperature detecting end and is used for connecting with the measured object to sense the temperature of the measured object, the cold end is generally a control end with a known temperature, the thermocouple generates a thermal electromotive force under the temperature difference, the greater the generated thermal electromotive force, so that the temperature difference signal of the thermocouple can be obtained by checking the thermal electromotive force of the thermocouple, and the temperature of the measured object can be detected by the thermocouple.

The material from which the susceptor is made determines that the susceptor is an electrical conductor, and in some embodiments, when the thermocouple and the susceptor are electrically connected to each other, the thermocouple and the susceptor form a thermocouple, and the susceptor forms the temperature sensing end of the thermocouple.

Specifically, referring to fig. 1 to 3, the thermocouple includes a first thermocouple 241 and a second thermocouple 242, and the first thermocouple electrode 31 and the second thermocouple electrode 32 are made of different metals or alloys, such as: first thermocouple electrode 31 is made of a nickel-chromium alloy, and second thermocouple electrode 32 is made of a nickel-silicon alloy; alternatively, first thermocouple electrode 31 is made of copper, and second thermocouple electrode 32 is made of copper nickel; alternatively, first thermocouple electrode 31 is made of iron, and second thermocouple electrode 32 is made of copper nickel; alternatively, first thermocouple electrode 31 and second thermocouple electrode 32 are S, B, E, K, R, J or T-type thermocouple wires. The first end of first thermocouple electrode 31 and the first end of second thermocouple electrode 32 all electric connection on receptor 21 for first end and the accessible receptor 21 electricity of second thermocouple electrode 32 of first thermocouple electrode 31 are connected, the second end of first thermocouple electrode 31 and the second end of second thermocouple electrode 32 all with detection module electric connection, detection module electricity is connected power supply module, power supply module can be indirect for the thermocouple power supply, thereby form the temperature detection return circuit, when receptor 1 is as the heat-generating body, constitute the temperature detection end in this thermocouple again, thereby its heating temperature can be detected by more accurate. The energy for heating the susceptor 1 is derived from the alternating magnetic field, and the susceptor 1 is electrically connected to the first thermocouple electrode 31 and the second thermocouple electrode 32, but is not electrically charged from the first thermocouple electrode 31 and the second thermocouple electrode 32 to generate heat. The susceptor 1 generates an eddy current under an alternating magnetic field, and when the eddy current is present in the susceptor 1, the power supply unit does not supply power to the first thermocouple electrode 31 and the second thermocouple electrode 32, and when the eddy current disappears in the susceptor 1, the power supply unit supplies power to the first thermocouple electrode 31 and the second thermocouple electrode 32, to detect the temperature of the susceptor 1, so that the eddy current does not affect the temperature detection.

Referring to fig. 1 to 4, the first thermocouple 241 and the second thermocouple 242 are disposed in parallel, and the sensor body 21 has a groove 214 on a side surface thereof for receiving ends of the first thermocouple 241 and the second thermocouple 242, the ends of the first thermocouple 241 and the second thermocouple 242 are protected by the groove 214, and a connection between the first thermocouple 241 and the second thermocouple 242 and the sensor body 21 prevents the sensor body 21 from wearing the first thermocouple 241 and the second thermocouple 242 when being assembled with other elements and affecting contact stability between the connection and the sensor body 21. The groove 214 can communicate with the upper and lower surfaces of the susceptor 21, and in order to prevent the air flow from passing through the groove 214, the upper connecting sleeve 22 is provided with a protrusion 224 corresponding to the groove 214, and the protrusion 224 can be embedded in the groove 214 to block the air flow. Referring to fig. 4, the protrusion 224 is disposed in the inner wall of the second portion 222 of the upper connecting sleeve 22, the thickness of the protrusion 224 may be smaller than the wall thickness of the first portion 221, and the width of the first step structure 223 in the upper connecting sleeve 22 may be larger than the thickness of the protrusion 224.

Referring to fig. 1-3 and 5, the fourth portion 232 of the lower connecting sleeve 23 has a notch 234, the notch 234 is disposed corresponding to the first thermocouple 241 and the second thermocouple 242, and the first thermocouple 241 and the second thermocouple 242 are electrically connected to the detection module after passing through the notch 234.

In the embodiment shown in fig. 11, an aerosol generating device and a hybrid heating device for an aerosol generating device further comprise a power supply assembly 26, a magnetic field generator 25 for generating an alternating magnetic field, and said hybrid heating device.

Magnetic field generator 25 may be a cylindrical coil wrapped around the lateral surface of susceptor 21. In other embodiments, the generator may be a flat structure, located on one side of the susceptor, such as above, below, front, back, left or right, etc. The power supply assembly is electrically connected with the magnetic field generator 5 to supply power for the magnetic field generator 5 to generate an alternating magnetic field.

The power module 26 is electrically connected to the thermocouple to supply power to the garment for detecting the temperature of the susceptor 21, and specifically, referring to fig. 11, the power module 26 is electrically connected to the first thermocouple 241 and the second thermocouple 242, the power module 26, the first thermocouple 241, the second thermocouple 242 and the susceptor 21 may form a power supply loop, the power module 26 includes an electric control board 261, the power module 26 is electrically connected to the magnetic field generator 25, the first thermocouple 241 and the second thermocouple 242 through the electric control board 261, and the power module 26 alternately supplies power to the first thermocouple 241, the second thermocouple 242 and the magnetic field generator 25 under the control of the electric control board 261, so that the first thermocouple 241, the second thermocouple 242 and the magnetic field generator 25 alternately operate.

Referring to fig. 12, the air flow heater 2 according to an embodiment of the present invention includes a sensor 271, a temperature equalizer 28, and at least two air holes 211.

In some embodiments, the temperature equalizer may be a ceramic, and further, the ceramic may be a honeycomb ceramic, the honeycomb ceramic has a porous structure, i.e., a large number of pores are distributed, so as to provide a larger heat exchange surface area, so that the airflow heater has a high efficiency of heating air, and at the same time, the honeycomb ceramic of the porous structure is closer to a solid structure, has a higher heat capacity than a ceramic tube with the same volume, and in addition, the thermal conductivity of the alumina material is greater than 30W/MK, so as to enable the heat to be conducted more rapidly and uniformly, and the thermal conductivity is high, so that the honeycomb ceramic of the porous structure can meet the requirement of rapidly heating air to a preset temperature.

In some embodiments, the temperature equalizer may be made of alumina ceramic, aluminum nitride ceramic, silicon carbide ceramic, beryllium oxide ceramic, or zirconium oxide ceramic, among others. The air holes in the honeycomb ceramics can be circular holes, elliptical holes and polygonal holes, and the polygonal holes comprise triangular holes, square holes, hexagonal holes and the like.

Referring to fig. 12-15, the temperature equalizer 28 is connected to the inductor 271 so that the temperature equalizer 28 can exchange heat with the inductor 271.

The inductor may be a magnetic body, and when an alternating magnetic field is applied to the magnetic body, energy loss due to eddy current loss (eddy current loss) and hysteresis loss (hysteresis loss) occurs in the magnetic body, and the energy of the loss is released from the magnetic body as heat energy. The larger the amplitude or frequency of the alternating magnetic field applied to the magnetic body, the more thermal energy can be released from the magnetic body.

In some embodiments, referring to fig. 12 and 13, the inductor 271 may have a cylindrical or ring structure with a cylinder 2711, and the cylinder 2711 is hollow and has two open ends. Under the alternating magnetic field, the cylinder wall of the cylinder 2711 generates eddy current and has hysteresis, so that the cylinder 2711 generates heat. If there is no temperature equalizer in the cylinder, a temperature gradient will be formed between the cylinder wall and the cylinder center of the cylinder, so that the heat distribution in the inductor is uneven, and the heated airflow is uneven.

In order to overcome the above problem, referring to fig. 12 and 13, the inductor 271 has a temperature equalizer 28, the temperature equalizer 28 is located inside the inductor 271 and can contact with the inner wall of the inductor body 211 to perform heat exchange with the inductor 271 with higher efficiency, the temperature equalizer 28 has a thermal conductivity greater than that of air, can rapidly absorb heat of the inductor 271, and the heat can rapidly equalize on the temperature equalizer 28, so as to reduce the temperature gradient from the cylinder wall to the cylinder core of the cylinder 2711, so that the heat distribution in the inductor 271 is uniform, and the temperature in each air hole 2 is equalized.

In some embodiments, referring to fig. 14 and 15, the inductor has a cylindrical structure or a ring structure with at least two cylinders 2711, and a common wall 2712 is provided between two adjacent cylinders 2711, and the common wall 2712 can also generate heat under the alternating magnetic field. The common wall 2712 divides the internal space of the inductor 271 into at least two parts, so that at least two cylinders 2711 can be formed in the inductor 211, the common wall 2712 can heat the inductor 211, the temperature gradient from the outer side wall of the inductor 271 to the center can be reduced, and the inductor 211 is divided into a plurality of cylinders 2711 with smaller volumes by the common walls 2712, so that the distance from the cylinder wall of each cylinder 2711 to the center of the cylinder can be reduced, and the temperature gradient from the cylinder wall of each cylinder 2711 to the center of the cylinder can be reduced.

The barrel 2711 can extend along the direction of gas flow, and the barrel 2711 can be of a straight structure, a bent structure or an inclined structure.

In some embodiments, as can be seen in fig. 12-15, a temperature equalizer 28 can be disposed in each barrel 2711 of the inductor 271 to increase the total heat exchange area of the temperature equalizer 28 and the inductor body 211, thereby increasing heat exchange efficiency and heat soaking efficiency. At this time, at least a part of the air hole 211 may be located on the temperature equalizer 28, such as setting the temperature equalizer 28 as honeycomb ceramics; at least a portion of the air hole 211 may also be located in the gap between the sensor 271 and the temperature equalizer 28, such as the temperature equalizer 28 is in surface contact with the corresponding barrel 2711, or in line contact or point contact, the outer side wall of the temperature equalizer 28 or the inner side wall of the barrel 11 may be configured as a wave surface, a thread surface, or a staggered point front surface.

In some embodiments, referring to fig. 15, the inductor 271 is provided as a honeycomb structure having a plurality of barrels 2711. A temperature equalizer can be arranged in part of the cylinder body, and the temperature equalizer can not be arranged in part of the cylinder body, so that the cylinder body which is not provided with the temperature equalizer can belong to the air hole and allow air flow to pass through. Optionally, each temperature equalizer has at least one air hole, the diameter of the air hole on the temperature equalizer may be the same as the diameter of the cylinder serving as the air hole, and the temperature equalizers are uniformly distributed in the susceptor to balance the temperature at various positions inside the susceptor as much as possible.

In some embodiments, referring to fig. 12, the temperature equalizer 28 is in surface contact with the corresponding cylinder 11, and the outer side wall of the temperature equalizer 28 is attached to the inner wall of the corresponding cylinder 11 to increase the heat exchange area.

In some embodiments, the thermal capacitance of the temperature equalizer is greater than the thermal capacitance of the sensor, such that after each puff of air, e.g., 50ml of air, passes over the non-contact heater, the non-contact heater temperature decreases less, only by 20-30 ℃, or even less, under the thermal capacitance of the temperature equalizer.

In some embodiments, not shown, the heat-generating body has a plurality of heat-generating bodies each constituting a sheet-like or plate-like surface heat source, and each temperature equalizer is positioned between two heat-generating bodies constituting a sandwich structure. The plurality of heating bodies and the temperature equalizer may extend in the same direction as the traveling direction of the air, that is, the plurality of heating bodies and the temperature equalizer are stacked in the lateral direction to form one or more sandwich structures, and the air hole may be provided in the heating body or in the temperature equalizer or defined between the heating body and the temperature equalizer. In other embodiments, not shown in the drawings, the extending direction of the plurality of heating elements and the temperature equalizer may be perpendicular to the traveling direction of the air, that is, the plurality of heating elements and the temperature equalizer are stacked in the longitudinal direction to form one or more sandwich structures, the heating elements and the temperature equalizer are provided with pore canals, and the pore canals on the heating elements and the pore canals on the temperature equalizer are in opposite communication or in staggered communication to form air holes for the air to pass through, the pore canals on the heating elements and the temperature equalizer may have the same pore diameter, different pore diameters, the same pore shapes, different pore shapes, the same pore distribution density, or different pore distribution densities, and when the air passes through, the air needs to pass through the heating elements and the temperature equalizer one by one, so that the air is heated and warmed to form hot air meeting the preset requirement.

In some embodiments, the temperature equalizer and the susceptor are in a rod shape or a sheet shape, the susceptor and the temperature equalizer are arranged in a staggered mode, and the air holes are distributed between the heating body and the temperature equalizer or distributed on the susceptor.

Referring to fig. 16, the air flow heater 2 according to an embodiment of the present invention includes a resistance heating element, a temperature equalizer, and at least two air holes.

In some embodiments, referring to fig. 16 to 18, the resistive heating element 273 is a resistive film, a mesh net, a resistive wire or a resistive sheet, and correspondingly, the temperature equalizer 28 may be made of honeycomb ceramics, and the resistive heating element 273 covers the outer sidewall of the temperature equalizer 28 and is attached to the outer sidewall of the temperature equalizer 28 to reduce the thermal resistance during the heat transfer process.

The resistance heating body 273 may be provided at least on the outer side wall of the temperature equalizer 28 by a thick film printing process, a physical vapor deposition process, a chemical vapor deposition process, a spray process, or the like.

Further, referring to fig. 16 to 18, the airflow heater 2 further includes an electrode 272, the electrode 272 is electrically connected to the resistive heating element 273, the electrode 272 may be disposed on an outer sidewall of the temperature equalizer 28 through a thick film printing process, a physical vapor deposition process, a chemical vapor deposition process, or a spraying process, and then the resistive heating element 273 may be formed through a thick film printing process, a physical vapor deposition process, a chemical vapor deposition process, or a spraying process, the resistive heating element 273 is disposed at least on an outer sidewall of the temperature equalizer 28, a portion of the electrode 272 overlaps the resistive heating element 273, a portion of the electrode 12 is exposed outside the resistive heating element 273, and a pin 2721 forming the electrode 272 is electrically connected to another conductor. The two electrodes 272 are a positive electrode and a negative electrode, and the pins 2721 of the positive electrode and the negative electrode may be located on the same side of the resistance heating element 273 as shown in fig. 17, or may be located on opposite sides of the resistance heating element 273 as shown in fig. 18.

Optionally, the resistance heating element may be a mosquito-repellent incense-shaped resistor or a mesh-shaped resistor, so that the air flow can pass through the resistance heating element, the temperature equalizer has a plurality of air holes allowing the air flow to pass through, and the resistance heating element and the temperature equalizer can be stacked and staggered along the air flow advancing direction, so that the air flow needs to pass through the resistance heating element and the temperature equalizer layer by layer before heating the aerosol substrate. The resistance heating element and the temperature equalizer can be stacked and staggered along the traveling direction of the air flow, so that the resistance heating element heats the temperature equalizer from the upper part or the lower part of the temperature equalizer or from the upper part and the lower part simultaneously, and then the temperature of the air hole in the temperature equalizer is equalized through the heat absorption, the heat storage, the heat release and the like of the temperature equalizer.

At larger axial lengths of the aerosol substrate the bottom of the aerosol substrate is substantially fully heated by the high temperature gas stream due to the upstream section of the aerosol substrate being closer to the gas stream heater, whereas the downstream section of the aerosol substrate is further from the gas stream heater, so that when the high temperature gas stream flows to the downstream section of the aerosol substrate, the downstream section of the aerosol substrate is not fully baked due to the temperature drop, resulting in a smaller amount of aerosol being produced by the aerosol substrate and a larger waste of aerosol substrate. If the temperature of the air stream is increased by increasing the heating power of the air stream heater, the upstream section of the aerosol substrate will be burned, affecting the mouthfeel.

In order to solve the problem of uneven heating of the upstream section and the downstream section of the aerosol substrate under the heating of the airflow, a compensation heater is additionally arranged in one embodiment of the application and is used for compensating the insufficiency of the airflow heated by the airflow heater.

In some embodiments, reference may be made to fig. 19, 20, the compensation heater 3 comprises at least one heating body, which is arranged coaxially with the aerosol substrate 11 and is arranged at the periphery of a section of the aerosol substrate 11 other than the upstream section, to heat the aerosol substrate 11 of this section. The upstream section of the aerosol substrate 11 is the section of the aerosol substrate 11 that is capable of being toasted with a sufficient amount of volatiles by the airflow heated by the airflow heater 2.

In some embodiments, and with reference to fig. 19 and 20, the compensation heater 2 is a circumferential heater that dissipates heat that is transferred from the surface of the aerosol substrate 11 to the center of the aerosol substrate 11, thereby heating the aerosol substrate 11 from the outside inwards. Correspondingly, the heating body can comprise an annular body, the annular body can be of a closed ring structure or an open ring structure, the heating body can be formed by curling single heating sheets or annularly surrounding a plurality of heating sheets, and the heating sheets can be connected with each other or spaced from each other.

In some embodiments, reference may be made to fig. 19, 20, with one and only one heating body being provided on the aerosol substrate 11 at the periphery of a section other than the upstream section to heat the aerosol substrate 11 that is not or not sufficiently baked by the airflow heated by the airflow heater 2.

Optionally, the heating power of the compensation heater is adjustable, and when there is a puff, the compensation heater may generate heat prior to or in synchronism with the airflow heater, but the compensation heater may have a greater heating power to enable at least the downstream section of the aerosol substrate to rapidly generate aerosol volatiles for smoking to meet the demand for rapid smoke generation. Later, the compensating heater can properly reduce the heating power to heat the aerosol substrate of the corresponding section, but the generated heat is not enough to volatilize the aerosol substrate, so as to maintain the temperature of the aerosol substrate of the corresponding section in a preset temperature range, prevent the temperature of the high-temperature airflow heated by the airflow heater from dropping too fast when the high-temperature airflow flows from the upstream section to the downstream section, or reduce the speed of the temperature drop of the high-temperature airflow heated by the airflow heater, ensure that the high-temperature airflow heated by the airflow heater has enough temperature for baking enough aerosol substrate from the aerosol substrate in the whole section of the aerosol substrate, so that the aerosol volatile is mainly generated by baking the aerosol substrate contacted with the high-temperature airflow, utilize the flowability of the airflow, ensure that the aerosol substrate is heated uniformly all over, and reduce the waste of the aerosol substrate, improving taste.

Optionally, the heating power of the compensation heater is fixed, and the heat generated by the heating power after the compensation heater works stably can always enable the aerosol substrate in the corresponding section to generate aerosol volatile matters, so that waste of the aerosol substrate which cannot be indirectly heated by the airflow heater through airflow is avoided, meanwhile, the amount of the aerosol generated in unit time is increased, and the taste is improved.

Alternatively, the heating power of the compensation heater is fixed, and the heat generated by the heating power after the compensation heater is stabilized may not always enable the aerosol substrate of the corresponding section to generate aerosol volatiles, and the generated heat is mainly used for preheating the aerosol substrate of the corresponding section, or the temperature of the aerosol substrate of the corresponding section is maintained in a preset temperature range, so that the temperature of the aerosol substrate heated by the airflow heater is prevented from being reduced in the aerosol substrate outside the upstream section, and the capacity of enabling the aerosol substrate to volatilize enough aerosol volatiles is lost, so that the aerosol volatiles are mainly generated by baking the aerosol substrate contacted with the aerosol substrate through high-temperature airflow.

In other embodiments, the heating body has two or three or more, and is disposed on the aerosol substrate at the periphery of a section other than the upstream section, to provide a staged heating of the aerosol substrate that is not toasted by the air stream heated by the air stream heater.

Optionally, the partial heating body is arranged in correspondence with a downstream section of the aerosol substrate to heat the aerosol substrate of the downstream section, and the partial heating body is arranged in correspondence with a midstream section of the aerosol substrate to heat the aerosol substrate of the midstream section. The different heating bodies can have different heating powers or the heating bodies arranged for different sections of the aerosol substrate can have different heating powers so that each heating body can be controlled individually or at least part of the heating bodies arranged for the same section of the aerosol substrate can be controlled synchronously.

Specifically, the heating power of the heating body provided corresponding to the downstream section of the aerosol substrate may be larger than that of the heating body provided corresponding to the upstream section of the aerosol substrate, and the heating body provided corresponding to the downstream section of the aerosol substrate may be operated only at the early stage of the smoking to rapidly discharge the smoke. The heating elements provided in correspondence with the mid-stream section of the aerosol substrate may operate throughout the entire smoking process, primarily to preheat the aerosol substrate in its corresponding section and to maintain the temperature of the aerosol substrate in its corresponding section within a preset range. Under the action of the heating body arranged corresponding to the midstream section of the aerosol substrate, the heat loss of the airflow heated by the airflow heater flowing through the midstream section is less, and on the premise that the downstream section of the aerosol substrate is short enough, the temperature of the airflow is still higher when the airflow enters the downstream section, so that aerosol volatile matters in the downstream section of the aerosol substrate can be roasted, and the energy conservation and the full utilization of the heat of the airflow are realized.

Alternatively, the heating power of the heating element disposed corresponding to the upstream section of the aerosol substrate may be greater than or equal to the heating power of the heating element disposed corresponding to the downstream section of the aerosol substrate, and the heating element disposed corresponding to the upstream section of the aerosol substrate may be intermittently operated to maintain the temperature of the aerosol substrate of the corresponding section thereof within a preset range.

In some embodiments, referring to fig. 19 and 20, the compensation heater 3 includes a heat pipe and a heat generating member, the heat pipe is a ring-shaped body and is disposed on the periphery of the aerosol substrate 11, the heat pipe is disposed on the heat pipe, and the heat pipe can be made of ceramic, quartz or metal with an insulating layer, etc. which has good heat conducting and heat equalizing performance. The heating element can be a resistance film, a mesh net, a resistance wire or a resistance sheet, and is attached to the heat conduction pipe, the heating element can generate heat under the condition of electrification, and the heat conduction pipe can absorb and transfer the heat generated by the heating element.

In some embodiments, reference may be made to fig. 19, 20, the compensation heater 2 comprises an induction heating tube that can heat under an alternating magnetic field, the induction heating tube being arranged at the periphery of the aerosol substrate 11.

The compensating heater further includes a coil for generating an alternating magnetic field, the coil being located at a periphery of the induction heating tube, the induction heating tube inducing the coil to generate an eddy current loss (eddy current loss) and a hysteresis loss (hysteresis loss), thereby generating heat to heat the corresponding aerosol substrate.

In some embodiments, referring to fig. 19 and 20, the connection pipe 4 is a tubular body, the air heater 2 is located in the connection pipe 4, the sensor 21 is in contact with the inner wall of the connection pipe 4 through an upper connection sleeve 22 and a lower connection sleeve 23, and a space is provided between the side surface of the sensor 21 and the inner wall of the connection pipe 4.

In some embodiments, reference may be made to fig. 19, 20, the connecting tube 4 may accommodate at least an upstream section of the aerosol substrate 11, and there may be substantial spacing between the aerosol substrate 11 and the air flow heater 2 within the connecting tube 4. To save space and reduce volume, the aerosol substrate 11 may be supported by an upper connecting sleeve 22 within the connecting tube 4, thereby providing a space between the aerosol substrate 11 and the susceptor 21 to prevent the susceptor 21 and the air stream just leaving the susceptor 21 from burning the aerosol substrate 11.

In some embodiments, reference may be made to fig. 19, 20, the compensation heater 3 is connected to the connecting tube 4, part of the aerosol substrate 11 being located in the connecting tube 4 and the remaining part of the aerosol substrate 11 being located in the compensation heater 3.

Alternatively, referring to fig. 19 and 20, a part of the compensation heater 3 may protrude into the connection pipe 4, the rest of the compensation heater 3 may be located outside the connection pipe 4, and the thickness of the compensation heater 3 is smaller than that of the connection pipe 4 to reduce the difference between the inner diameters of the connection pipe 4 and the compensation heater 3.

Alternatively, it is possible to refer to fig. 19, 20 that the air flow heater 2 has a larger heating effect, so that the axial length of the aerosol substrate 11 located within the compensation heater 3 is smaller than the axial length of the aerosol substrate 11 not received by the compensation heater 3 and located between the compensation heater 3 and the air flow heater 2.

In some embodiments, referring to fig. 19 and 20, the cigarette 1 includes a mouthpiece 12, a cooling section and an aerosol substrate 11, the cooling section is located between the mouthpiece 12 and the aerosol substrate 11, and the aerosol generated by the aerosol substrate 11 enters the cooling section for cooling and then enters the mouthpiece 12 for human consumption.

An embodiment of the present application provides a hybrid heating apparatus including the above hybrid heating apparatus. The hybrid heating device heats the aerosol substrate with the hybrid heating device to emit the aerosol.

In the above mixing heating device and aerosol generating device, the airflow heated by the airflow heater is the main force for baking the aerosol substrate to generate aerosol volatile matters, and the compensation heater is used for making up the defect that the downstream section of the aerosol substrate cannot be baked or cannot be fully baked due to large temperature drop of the airflow when the length of the aerosol substrate is long, so that the aerosol substrate is fully utilized, the aerosol substrate is prevented from being wasted, sufficient aerosol is generated at the same time, and the taste is improved due to the mutual cooperation of the airflow heater and the compensation heater.

In the above-described hybrid heating device and aerosol generating device, the compensation heater is located after the upstream section of the aerosol substrate, and the heat generated by the compensation heater can raise the temperature of the aerosol substrate in the corresponding section, thereby preventing the temperature of the air flow heated by the air flow heater from dropping, and therefore ensuring that the air flow heated by the air flow heater can continuously bake the aerosol substrate outside the upstream section to generate a sufficient amount of volatile substances.

In the mixing and heating device and the aerosol generating device, the airflow has fluidity, the heating area of the aerosol substrate can be increased by heating the aerosol substrate by using the airflow, and the aerosol substrate can be uniformly heated everywhere, so that high-quality aerosol is generated.

Referring to fig. 21, fig. 21 is a graph showing a detection result curve of temperature distribution detection performed by taking an aerosol substrate having an axial length of 20mm as an example, in which a lower curve is a temperature distribution curve when the aerosol substrate is heated by only the air flow heater, and an upper curve is a temperature distribution curve when the aerosol substrate is heated by both the air flow heater and the compensation heater. From the figure, it can be seen that when the aerosol substrate is heated by the air flow heater alone, starting from the bottom of the aerosol substrate (or starting from the upstream section), the temperature of the section 10mm above the bottom of the aerosol substrate is reduced to below 250 c, and the temperature of the section 20mm above the bottom of the aerosol substrate is reduced to below 200 c, which results in poor overall aerosol substrate utilization. Meanwhile, when the aerosol substrate is heated by the airflow heater and the compensating heater, the temperature of a section which is 10-20mm from the bottom of the aerosol substrate is above 250 ℃, so that the cigarette utilization rate can be effectively improved, and the use experience is improved.

It should be noted that the description and drawings of the present application illustrate preferred embodiments of the present application, but are not limited to the embodiments described in the present application, and further, those skilled in the art can make modifications or changes according to the above description, and all such modifications and changes should fall within the scope of the claims appended to the present application.

Claims (20)

1. An aerosol generating device, comprising:

an elongate chamber for receiving at least a portion of an aerosol substrate;

a gas flow heater upstream of the chamber for heating a gas flow to the chamber; and

a compensation heater positioned within or adjacent to the chamber for heating a localized section of the aerosol substrate;

wherein the compensation heater is configured to be spaced from the airflow heater in a lengthwise direction of the chamber such that a portion of the aerosol substrate can be positioned between the compensation heater and the airflow heater when the aerosol substrate is received in the chamber.

2. An aerosol generating device according to claim 1, wherein the compensation heater is configured to heat the aerosol substrate from the outside inwards in a circumferential direction of the chamber.

3. An aerosol generating device according to claim 2, wherein the compensation heater comprises a heat pipe surrounding a portion of the chamber and a heat generating member disposed on the heat pipe.

4. An aerosol generating device according to claim 2, wherein the compensation heater comprises an induction heating tube surrounding a portion of the chamber, the induction heating tube being capable of heating under an alternating magnetic field.

5. An aerosol generating device according to claim 2, further comprising a connecting tube through which the compensation heater is connected to the airflow heater.

6. The aerosol generating device of claim 1, wherein the compensation heater is configured to heat a midstream section or a downstream section of the aerosol substrate.

7. An aerosol generating device according to claim 6, wherein the compensation heater comprises at least one heating body arranged coaxially with the chamber to heat the midstream or downstream section of the aerosol substrate located within the chamber.

8. An aerosol generating device according to claim 1, wherein the airflow heater comprises a susceptor through which the airflow passes, the susceptor being configured to be capable of heating under the alternating magnetic field to heat the airflow passing through the susceptor.

9. The aerosol generating device of claim 8, wherein the susceptor is a porous honeycomb structure.

10. The aerosol generating device of claim 8, wherein the susceptor comprises a plurality of magnetic susceptors, each of the magnetic susceptors having a plurality of through holes for airflow therethrough, the plurality of magnetic susceptors being stacked on top of one another, the through holes of adjacent magnetic susceptors being at least partially interconnected for airflow therethrough.

11. An aerosol-generating device according to claim 8, wherein the susceptor comprises a material having a foam structure with continuous pores through which the gas stream can pass.

12. An aerosol generating device according to claim 1, wherein the airflow heater comprises a heat generating body and a temperature equalizer having a plurality of vents, the temperature equalizer being in thermally conductive communication with the heat generating body to heat the airflow in each of the vents by absorbing heat from the heat generating body and releasing heat into each of the vents.

13. An aerosol generating device according to claim 12, wherein the heating element is configured to surround at least a portion of a surface of the temperature equalizer.

14. An aerosol generating device according to claim 12, wherein the heating element is configured as a surface heat source and is in contact with at least part of a surface of the temperature equalizer.

15. An aerosol generating device according to claim 12, wherein the heat generating body comprises a thin film heater, a mesh heater, a heat generating coating, a sheet heater, or a susceptor capable of inductively generating heat under an alternating magnetic field.

16. An aerosol generating device according to any of claims 12 to 15, wherein the temperature equaliser is a honeycomb ceramic having a plurality of air holes therein to allow airflow therethrough.

17. An aerosol generating device according to claim 1, wherein the chamber has an open end for receiving the aerosol substrate, the compensation heater being located remote from the airflow heater and proximate the open end.

18. An aerosol generating device according to claim 1, wherein the compensation heater is configured to have a lower operating temperature than the airflow heater.

19. An aerosol generating device according to claim 1, wherein the compensation heater and the airflow heater are configured not to be activated simultaneously.

20. A hybrid heating device for an aerosol generating device for heating an aerosol substrate to generate an aerosol, comprising:

an airflow heater for heating an airflow;

a compensation heater spaced from the gas flow heater for heating a localized section of the aerosol substrate; and

a connecting tube connected between the airflow heater and the compensation heater, the connecting tube configured to receive a portion of the aerosol substrate and to receive an airflow heated by the airflow heater to enable the airflow to enter into the aerosol substrate.

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