CN217446681U

CN217446681U - Heating module and aerosol generating device

Info

Publication number: CN217446681U
Application number: CN202220879035.7U
Authority: CN
Inventors: 戚祖强; 徐中立; 李永海
Original assignee: Shenzhen FirstUnion Technology Co Ltd
Current assignee: Shenzhen FirstUnion Technology Co Ltd
Priority date: 2022-04-16
Filing date: 2022-04-16
Publication date: 2022-09-20
Anticipated expiration: 2032-04-16

Abstract

The application relates to a heating module and an aerosol generating device, which comprise a heat-insulating shell, wherein a first accommodating cavity is formed in the heat-insulating shell and used for accommodating at least part of an aerosol generating product, and a first insertion hole communicated with the first accommodating cavity is formed in the near end of the heat-insulating shell; a heating assembly arranged in the first receiving chamber for heating the aerosol-generating article to produce an aerosol; wherein the distal end of the insulating shell is sealed.

Description

Heating module and aerosol generating device

Technical Field

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

Background

Aerosol-generating devices typically comprise a heating assembly for heating an aerosol-generating article to cause it to generate an aerosol.

In order to prevent the aerosol generating device shell from scalding hands and reduce the cooling speed of the heating assembly, so that energy conservation is realized, the aerosol generating device is usually internally provided with a heat preservation layer, the heating assembly is arranged in the heat preservation layer, and the heat preservation effect of the current heat preservation layer is to be improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a heating module and aerosol generating device for the heat preservation shell has better heat preservation effect through the arch bottom that makes the distal end of heat preservation shell be the evagination.

The embodiment of the application provides a heating module, includes:

the aerosol generating device comprises a heat preservation shell, a first air inlet, a second air inlet and a second air inlet, wherein a first containing cavity is formed in the heat preservation shell and used for containing at least part of an aerosol generating product, and a first insertion opening communicated with the first containing cavity is formed in the near end of the heat preservation shell;

a heating assembly arranged in the first receiving cavity for heating the aerosol-generating article to produce an aerosol;

wherein, the far end of the heat preservation shell is an arched bottom which protrudes outwards.

The aerosol generating device provided by the embodiment of the application comprises the heating module.

Foretell heating module and aerosol generating device, the near-end of heat preservation shell has first inserted hole, the distal end is the arch bottom of evagination, and heating element sets up in the heat preservation shell to heating element generates heat in the heat preservation shell, and heating element's heat is inside the heat preservation shell from side and bottom limitation by the heat preservation shell to can carry out more effective heat preservation to heating element, help reducing the consumption of heating module. Moreover, the arched bottom of the heat preservation shell has the function of collecting heat or preventing the heat from being dissipated from the bottom, so that the heat can be effectively kept in the first accommodating cavity, and the heat preservation effect of the heat preservation shell is improved. Meanwhile, the bottom of the heat preservation shell is arranged to be arched, and the arched bottom is easier to process and form relative to the bottom of the plane.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings which correspond to and are not to be construed as limiting the embodiments, in which elements having the same reference numeral designations represent like elements throughout, and in which the drawings are not to be construed as limiting in scale unless otherwise specified.

Fig. 1 is a schematic diagram of an aerosol generating device provided by an embodiment of the present application;

FIG. 2 is a partial schematic view of an aerosol generating device provided by an embodiment of the present application;

FIG. 3 is a schematic view of a heating assembly provided in an embodiment of the present application;

FIG. 4 is a cross-sectional view of a heating assembly provided in accordance with an embodiment of the present application;

FIG. 5 is a schematic view of an air heater provided in an embodiment of the present application;

FIG. 6 is another schematic view of an air heater provided by an embodiment of the present application;

FIG. 7 is a further schematic view of an air heater provided in accordance with an embodiment of the present application;

FIG. 8 is a schematic view of an air heater provided in another embodiment of the present application;

FIG. 9 is a cross-sectional view of a heating assembly provided in another embodiment of the present application;

in the figure:

1. an aerosol-generating article;

2. a housing; 21. a first accommodating chamber;

30. a heating module; 3. a heating assembly; 31. a tubular body; 311. a receiving cavity; 32. an air heater; 321. a substrate; 3211. a first portion; 322. a fixed part; 323. a first air hole; 324. a second air hole; 3241. a groove; 33. a first temperature detector; 331. a first thermocouple wire; 332. a second thermocouple wire; 34. a heat preservation shell; 341. an arched bottom; 35. a convex air cavity; 36. a support; 361. a second insertion opening; 362. a second air passing hole; 37. a shoulder portion; 371. a first air passing hole; 38. a shielding layer; 39. a second temperature detector;

4. a power source; 41. an electric core; 42. a controller;

5. a magnetic field generator.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all 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 any relative importance or implicit indication of the number or order 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 or movement of the components 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 but may alternatively include other steps or elements not expressly 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 for heating an aerosol-generating article to volatilize an aerosol from the aerosol-generating article for consumption, the aerosol may comprise herbal medicine, nicotine or flavourant such as tobacco flavourant. In the embodiment shown in figure 1, the aerosol-generating article 1 is a smoking article (e.g. a cigarette, cigar, etc.), but this is not intended to be limiting.

In the embodiment shown in figure 1, the aerosol-generating device comprises a heating module 30 for receiving the aerosol-generating article 1 and for heating the aerosol-generating article 1, and a power source 4, the power source 4 being for powering operation of the heating assembly 3.

Referring to fig. 1 and 2, the power source includes a battery cell 41, and the battery cell 41 is a rechargeable dc battery cell and can output a dc current. In other embodiments, the battery cell 41 may also be a disposable battery, which may not be rechargeable or need not be recharged. In other implementations, the power source 4 may be a wired power supply that is directly connected to the mains power via a plug to power the aerosol generating device.

In a preferred embodiment, the battery cell 41 provides a dc supply voltage in a range from about 2.5V to about 9.0V, and the battery cell 41 provides a dc current with an amperage in a range from about 2.5A to about 20A.

Power may be supplied to the heating assembly 3 as a pulse signal, and the amount of power delivered to the heating assembly 3 may be adjusted by varying the duty cycle or pulse width or pulse amplitude of the power signal.

The aerosol generating device is preferably a hand-held aerosol generating device.

Further, the aerosol generating device comprises a controller 42, an insertion detector and a user interface (e.g. a graphical display or a combination of LED indicator lights, etc.) that communicates information about the aerosol generating device to a user.

The insertion detector may detect the presence and characteristics of the aerosol-generating article 1 in proximity to the heating module 30 on the heat transfer path and signal the presence of the aerosol-generating article 1 to the controller 42. It will be appreciated that the provision of an insertion detector is optional and not necessary.

The controller 42 controls the user interface to display system information such as cell power, temperature, status of the aerosol-generating article 1, number of puffs, other information, or a combination thereof.

The controller 42 is electrically connected to the power source and the heating module 30 for controlling the current, voltage or electric power output of the power source, so as to control the temperature of the heating assembly 3 in the heating module 30.

Controller 42 may include a programmable microprocessor. In another embodiment, the controller 42 may comprise a special-purpose electronic chip, such as a Field Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC). In general, any device capable of providing a signal capable of controlling a heating assembly may be used with the embodiments discussed herein. In one embodiment, the controller 42 is configured to detect a temperature change in the actual temperature of the heating assembly 3 in the heating module 30 relative to a target temperature to detect a temperature indicative of a user puff event.

Controller 42 may include a storage component that may include a memory and/or a buffer. The storage assembly may be configured to record changes in the detected airflow or user puff. The storage component may record a count of puffs by the user or the time of each puff. The storage assembly may also be configured to record the temperature of the heating assembly 3 and the power supplied during each puff. The recorded data may be displayed on the user interface under the call of the controller 42, or output and displayed on another output interface, when the recorded number of puffs reaches the preset total number of puffs of the aerosol-generating article 1, the controller 42 may reset, or the controller 42 may clear the recorded number of puffs, or the controller 42 controls the aerosol-generating device to shut down, or the controller 42 controls the electrical core 41 to stop supplying power to the heating element 3, or the controller 42 may prompt the user that the aerosol-generating article 1 has reached the puff limit by sound, light, vibration, or the like.

User suction may be useful for subsequent research and device maintenance and design. The user's suction port number data may be transmitted to an external memory or processing device by any suitable data output means. For example, the aerosol generating device may comprise a radio connected to a controller or memory, bluetooth, or a Universal Serial Bus (USB) slot connected to a controller or memory. Alternatively, the aerosol-generating device may be configured to transmit data from the memory to an external memory in the cell charging device whenever the aerosol-generating device is recharged via an appropriate data connection.

Further in alternative implementations, the aerosol-generating article 1 preferably employs a tobacco-containing material that releases volatile compounds from the smokable article when heated; or it may be a non-tobacco material that is suitable for electrically heated smoking after heating. The aerosol-generating article 1 preferably employs a solid substrate, and may comprise one or more of a powder, granules, shredded strips, strips or flakes of one or more of vanilla leaves, tobacco leaves, homogenised tobacco, expanded tobacco; alternatively, the aerosol-generating article 1 may contain additional tobacco or non-tobacco volatile flavour compounds to be released when the aerosol-generating article 1 is heated. In some alternative implementations, the aerosol-generating article 1 is produced to have the shape of a conventional cigarette or cigar.

Further in alternative implementations, the aerosol-generating article 1 may be contained in a smoking article. During operation, the smoking article containing the aerosol-generating article 1 may be fully contained within the aerosol-generating device. In this case, the user may draw on the mouthpiece of the aerosol-generating device. The mouthpiece may be any part of the aerosol-generating device that is placed in the mouth of a user so as to inhale directly the aerosol generated by the aerosol-generating article 1 or aerosol-generating device. The aerosol is delivered into the user's mouth via the mouthpiece. Alternatively, during operation, a smoking article comprising the aerosol-generating article may be partially contained in the aerosol-generating device. In this case, the user may draw directly on the mouthpiece of the smoking article.

The heating module 30 comprises a heating assembly 3, the heating assembly 3 may comprise a single heater, alternatively the heating assembly 3 may comprise more than one heater, the single heater or the plurality of heaters may be suitably arranged to most effectively heat the aerosol-generating article 1, wherein the plurality of heaters may constitute a segmented heating of the aerosol-generating article 1, at least two of the plurality of heaters may have different heating patterns or heating efficiencies.

The heater may heat the aerosol-generating article 1 by conduction. The heater may be at least partially in contact with the aerosol-generating article 1 or the aerosol-generating article 1 carrier. Alternatively, heat from the heater may be conducted to the aerosol-generating article 1 by a heat-conducting element.

Alternatively, wherein the at least one heater may heat the aerosol-generating article 1 by convection; alternatively, the ambient air may be heated by at least one of the heaters before passing through the aerosol-generating article 1; alternatively, the heater may heat the aerosol-generating article 1 by radiation.

In one embodiment, the heater may have one or more heaters, power being supplied to the heating assembly 3 until the one or more heaters reach a temperature of between about 150 ℃ and 440 ℃ in order to generate an aerosol from the aerosol-generating article 1.

Referring to fig. 2, the heating module 30 further includes a heat-insulating shell 34, a first accommodating cavity 21 is formed inside the heat-insulating shell 34, and at least a part of the aerosol-generating product 1 can be accommodated in the first accommodating cavity 21; a first insertion opening communicated with the first accommodating cavity 21 is formed in the proximal end of the heat-insulating shell 34, and at least part of the aerosol-generating product 1 needs to pass through the first insertion opening when entering the first accommodating cavity 21; the distal end of the insulating shell 34 is sealed.

The heating assembly 3 is arranged in the first receiving cavity 21, which generates heat in the first receiving cavity 21 to heat the aerosol-generating article 1, thereby generating an aerosol. The heat-insulating shell 34 has heat-insulating and heat-insulating functions, and its side wall is located in the lateral periphery of the heating element 3, and its distal end (bottom) is located below the heating element 3, and is sealed, so that it can provide more perfect heat insulation for the heating element 3, and it is helpful to further reduce the energy consumption of the heating module 30.

In one embodiment, referring to fig. 2, the distal end of the thermal insulation shell 34 is a convex arched bottom 341, and the arched bottom 341 can accommodate a thicker air layer relative to a flat bottom, so that the thicker air can more effectively block heat from being transferred to the thermal insulation shell 34, and the thermal insulation time can be prolonged.

Preferably, the arched bottom 341 is configured to reflect infrared light. In one embodiment, the inner side of the arched bottom 341 has an infrared reflective layer, which is a bright material, such as aluminum foil, nickel foil, etc., or a metal coating, such as gold coating, silver coating, etc. The heat is blocked from transferring outwards by reflecting infrared rays through the arched bottom 341, so that the heat is kept in the first accommodating cavity 21, thereby enhancing the heat preservation effect on the heating assembly 3. And the arched bottom 341 has a larger flood infrared reflection area relative to the planar bottom, so that the heat preservation effect is better.

Further, at least a part of the heating module 30 is exposed in the reflection range of the arched bottom 341; alternatively, after the aerosol-generating article 1 is received in the first receiving cavity 21, it is at least partially exposed in the reflective range of the domed bottom 341. So that infrared rays reflected by the domed bottom 341 can impinge on the heating assembly 3 or on the aerosol-generating article 1, so that the reflected infrared rays can warm the heating assembly 3 or the aerosol-generating article 1, thereby further achieving energy savings. Where the arcuate base 341 is preferably curved so that its reflected infrared light converges on the heating element 3 or on the aerosol-generating article 1, the infrared light emitted by the insulating shell 34 can be made more concentrated by providing the distal end of the shell with a convex arcuate shape. Preferably, the heat-insulating shell 34 is of an integral structure, so that the side wall and the bottom of the heat-insulating shell are connected seamlessly, the arched bottom 341 can better seal the far end of the heat-insulating shell 34, diffuse reflection inside the heat-insulating shell 34 can be reduced, the concentration of reflected light is improved, and heat concentration at the seam can be prevented, which leads to over-high local temperature.

In some embodiments, an infrared reflective layer may be disposed on the inner or outer side of the side wall of the thermal insulation shell 34 to increase the thermal insulation effect of the side wall of the thermal insulation shell 34.

In one embodiment, referring to fig. 2, the thermal insulation shell 34 is made of thermal insulation material, and further, the thermal insulation shell 34 has a vacuum interlayer in the wall thereof, including the wall of the arched bottom 341, and/or the thermal insulation shell 34 has a vacuum interlayer in the sidewall thereof, thereby improving the thermal insulation effect.

In an embodiment, reference may be made to fig. 2-4 and 9, the heating assembly 3 comprises a tubular body 31.

The tubular body 31 has a second receiving cavity 311 formed therein for receiving the aerosol-generating article 1, the tubular body 31 may generate heat, and may be an electromagnetic heating element, a resistive heating element, an infrared heating element, or the like, and in one embodiment, the tubular body 31 maintains a high temperature environment inside the second receiving cavity 311 by generating heat to prevent the hot air in the aerosol-generating article 1 from decreasing in temperature and failing to sufficiently bake the aerosol-generating article 1, while preventing condensation of the aerosol in the aerosol-generating article 1; in another embodiment, the tubular body 31 is for high power operation upon inhalation of the aerosol-generating article 1 by a user to rapidly heat the aerosol-generating article 1 so that the aerosol-generating article 1 can rapidly generate aerosol to meet the user's demand for rapid smoke/fog generation, thereby enhancing the user experience. In a further embodiment, after meeting the user's first puff fast smoke/fog demand, the tubular body 31 may be put into a low power operating state to cooperate with other heaters, such as air heaters, to maintain a high temperature environment inside the aerosol-generating article 1, preventing excessive cooling of the air inside the aerosol-generating article 1. In a further embodiment, the heating assembly 3 comprises only the tubular body 31, with the tubular body 31 heating the aerosol-generating article 1 inside it to produce an aerosol. In other embodiments, the tubular body 31 may be a thermal insulating tube, primarily for insulating the aerosol-generating article 1 against excessive temperature drop of the air stream in the aerosol-generating article 1.

The first receiving chamber 21 has an air flow passage therein, and when the aerosol-generating article 1 is sucked, air in the first receiving chamber 21 enters the second receiving chamber 311 from the distal end of the tubular body 31 along the air flow passage.

In an embodiment, which can be seen in fig. 2-4 and 9, the heating assembly 3 further comprises an air heater 32, the air heater 32 being located upstream of the tubular body 31 in the direction of air flow. The air heater 32 may generate heat and is configured to heat air entering the aerosol-generating article 1 such that the air entering the aerosol-generating article 1 forms hot air, and the hot air, after entering the aerosol-generating article 1, may fill and flow through substantially all of the voids in the aerosol-generating article 1 by virtue of the flowability of the hot air, and may further more fully and uniformly bake the aerosol-generating article 1 to generate an aerosol, and the air entering the aerosol-generating article 1 may be heated by the air heater 32 to help improve the mouth-feel of the aerosol-generating article 1.

In the embodiment shown in fig. 2 to 4, the tubular body 31 is connected with the air heater 32 in a nesting manner, and partially coincides, so that the tubular body 31 and the air heater 32 are connected into a whole, so that the air heater 32 can be held in the accommodating cavity 21 of the aerosol generating device through the tubular body 32, and the air heater 32 can be suspended; alternatively, the tubular body 31 is held in the first receiving chamber 21 of the aerosol generating device by the air heater 32, and the tubular body 31 may not contact with the chamber wall of the first receiving chamber 21; alternatively, the tubular body 31 is in contact with the cavity wall of the first accommodating chamber 21, and the air heater 32 is also in contact with the cavity wall of the first accommodating chamber 21, so that the tubular body 31 and the air heater 32 are held in the first accommodating chamber 21.

In an embodiment, referring to fig. 5 to 8, the air heater 32 includes a base 321 and a fixing portion 322, and the fixing portion 322 is disposed at a side surface of the base 321. The air heater 32 is connected to the tubular body 31 by a fixing portion 322, at least part of the fixing portion 322 is located in the second receiving cavity 311 of the tubular body 31, that is, at least part of the fixing portion 311 is located in a region where the air heater 32 and the tubular body 31 overlap.

The heating element 3 comprises a first air hole 323, the first air hole 323 penetrates through the base 321, air can be heated into hot air by the base 321 when passing through the first air hole 323, the first air hole 323 is communicated with the second accommodating cavity 311 in the tubular body 31, and the air flowing through the first air hole 323 enters the second accommodating cavity 311 and further enters the inside of the aerosol-generating product 1. The first air holes 323 are curved, uniform or non-uniform, and the first air holes 323 may be ordered or disordered.

The heating assembly 3 further includes a second air hole 324, and the second air hole 324 is disposed at the periphery of the first air hole 323. Specifically, the second air hole 324 communicates with the second receiving cavity 311 of the tubular body 31, air can enter the second receiving cavity 311 through the second air hole 324, and the air flows through the fixing portion 322 when passing through the second air hole 324.

The side surface of the base 321 includes a first portion 3211 and a second portion, the first portion 3211 and the second portion being distributed along the axial direction of the air heater 32, and the second portion being located downstream of the first portion 3211 in the air flow direction.

In one embodiment, referring to fig. 5 and 6, the securing portion 322 can be disposed on the second portion such that the first portion 3211 projects beyond the tubular body 31.

The airflow passage in the first accommodation chamber 21 includes a first airflow passage and a second airflow passage. Part of the air in the first accommodating cavity 21 flows to the first air hole 323 through the first air channel and enters the second accommodating cavity 311 through the first air hole 323, wherein the distal end of the heat-insulating shell 34 defines a convex air cavity 35, the convex air cavity 35 forms part of the first air channel, and the convex air cavity 35 can be positioned right below the first air hole 323; at least part of the second air flow channel is arranged around the outer side surface of the tubular body 31, part of the air in the first accommodating cavity 21 flows from the proximal end of the tubular body 31 to the distal end of the second air hole 324 along the outer side wall of the tubular body 31 along the first air flow channel, and enters the second accommodating cavity 311 through the second air hole 324, when the tubular body 31 generates heat, the side wall can heat the air in the second air flow channel, and the air in the second air flow channel can fully utilize the residual heat of the tubular body 31 for heating.

When the air heater 32 and the tubular body 31 both comprise grade 430 stainless steel (SS430), or grade 420 stainless steel (SS420), or an alloy material containing iron and nickel (such as permalloy), or a graphite alloy or other magnetically susceptible materials that generate heat in a changing magnetic field, the magnetically susceptible materials can generate eddy currents and hysteresis in the changing magnetic field, thereby generating heat. Both the air heater 32 and the tubular body 31 can generate heat in the changing magnetic field, and since at least part of the second portion is located in the tubular body 31, or at least part of the fixing portion 322 is located in the tubular body 31, at least part of the fixing portion 322 can be magnetically shielded by the tubular body 31 and can not generate eddy currents (in this case, the magnetic induction generator generating the changing magnetic field is located at the periphery of the heating assembly 3, it can be understood that if the magnetic induction generator generating the changing magnetic field is located at the inner side of the heating assembly 3, part of the tubular body 31 can be magnetically shielded by the air heater 32), in this case, the temperature of the second portion and the temperature of the substrate 321 at the inner side of the second portion can be raised by heat conduction, and the heat sources of the heat conduction are the tubular body 31 at the overlapping region and the substrate 321 exposed outside the tubular body 31. The local magnetic shield does not affect the heating effect of the air flowing through the fixing portion 322.

Preferably, when both the air heater 32 and the tubular body 31 comprise magnetically susceptible material, the aerosol generating device further comprises a magnetic field generator 5, such as an induction coil, for generating a varying magnetic field, which may be one and only one, the air heater 32 and the tubular body 31 being located inside the magnetic field generator. Of course, it is understood that in other embodiments, there may be more than one magnetic induction generator, and the air heater 32 may have at least one magnetic induction generator around it to provide a varying magnetic field, and at the same time, the tubular body 31 may have at least one magnetic induction generator around it to provide a varying magnetic field; the magnetic induction generator providing the varying magnetic field to the tubular body 31 and the magnetic induction generator providing the varying magnetic field to the air heater 32 may be independent of each other; alternatively, at least one of the plurality of induction generators providing the tubular body 31 with a varying magnetic field may simultaneously provide the air heater 32 with a varying magnetic field.

In another preferred embodiment, one of the air heater 32 and the tubular body 31 contains magnetically susceptible material, and the other contains electrically resistive conductive material such as fe-cr-al, nicr, ni-fe, pt, w, ag, conductive ceramics, which when electrically conductive can generate heat through the electrothermal effect of the resistance.

Referring to fig. 3-7, the side surface of the fixing portion 322 is recessed to form a groove 3241, and the groove 3241 and the inner wall of the tubular body 31 define a second air hole 324. In one embodiment, the groove 3241 may be linear extending in the axial direction of the air heater 32; in another embodiment, the groove 3241 can be serpentine or dog-leg shaped extending through the proximal and distal ends of the retainer portion 322; in another embodiment, the groove 3241 can be a diagonal or arc or spiral or the like that extends through the proximal and distal ends of the anchor portion 322.

In a further embodiment, the groove width is the same throughout the same groove 3241, such that the air has substantially the same contact area with the groove 3241 throughout the groove 3241, and thus substantially the same heat exchange efficiency.

There may be one and only one groove 3241. It is preferable that the groove 3241 has a plurality of grooves 3241 uniformly distributed on the fixing portion 31 so that the air flowing through the fixing portion 322 can be uniformly heated, where the uniform distribution includes: 1. all of the grooves 3241 may have substantially the same size and shape; 2. the distance between two adjacent grooves 3241 is the same as the distance between any other two adjacent grooves 3241 at the same axial height of the air heater 32.

In a further embodiment, as can be seen in fig. 3-7, the fixing portion 322 forms a ring shape disposed around the base 321, such that the grooves 3241 formed on the fixing portion 322 are annularly distributed on the periphery of the base 321, and can be uniformly distributed.

In some embodiments, the plurality of grooves 3241 can be distributed non-uniformly over the fixing portion 322. Of course, the fixing portion 322 may not be formed in a ring shape, but may be one or more block-shaped bodies or arc-shaped bodies provided on the surface of the base 321, and the groove 3241 is formed on the surface of the block-shaped bodies or the arc-shaped bodies.

In an embodiment, referring to fig. 8, the fixing portions 322 have a plurality of, at least two, second air holes 324 are formed between two adjacent fixing portions 322. Accordingly, the air passes through the second air hole 324, and is simultaneously heated by the three parties while contacting the fixing portion 322, the base 321, and the tubular body 31.

In other embodiments, the fixing portion 322 is disposed on the first portion 3211 of the base 321, so that the entire air heater 32 is located in the second receiving cavity 311 of the tubular body 31, or only a part of the fixing portion 322 and the base 321 inside the fixing portion 322 are exposed outside the tubular body 31.

In other embodiments, the fixing portion 322 connects the first portion 3211 and the second portion, and a part of the air heater 32 is exposed outside the tubular body 31 and a part of the air heater is located inside the tubular body 31.

In one embodiment, the first air hole 323 is communicated with the far end of the second air hole 324, and the air flowing out from the first air flow passage mainly enters the second accommodating cavity 311 through the first air hole 323, but part of the air also enters the second accommodating cavity through the second air hole 324, and similarly, the air flowing out from the second air flow passage mainly enters the second accommodating cavity 311 through the second air hole 324, but part of the air also enters the second accommodating cavity 311 through the first air hole 323.

Referring to fig. 2, the heating module 30 further includes a bracket 36, at least a portion of the bracket 36 is disposed in the first accommodating cavity 21, the bracket 36 is connected to the heat-insulating shell 34, the heating element 3 is connected to the bracket 36 and is held in the first accommodating cavity 21 by the bracket 36, a side wall of the bracket 36 and a side wall of the heat-insulating shell 34 define a portion of a first air flow passage, and a side wall of the bracket 36 and the tubular body 31 define at least a portion of a second air flow passage, so that the first air flow passage and the second air flow passage are at least partially separated by the side wall of the bracket 36.

In one embodiment, referring to fig. 2, the proximal end of the holder 36 is formed with a second insertion opening 361, at least a portion of the second insertion opening 361 is located in the first insertion opening, or the second insertion opening 361 is in communication with the first insertion opening, and the aerosol-generating article 1 is required to enter the first receiving chamber through the second insertion opening 361.

The bracket 36 further includes a shoulder 37 and a bracket body, the shoulder 37 is disposed around the second insertion opening 361 and connects the bracket body and the thermal insulation shell 34, so that at least part of the first accommodating cavity 21 is defined by the thermal insulation shell 34 and the shoulder 37, and the shoulder 37 and the thermal insulation shell 34 can be an integral structure; or the shoulder 37 may be injection molded integrally with the holder body; or the shoulder 37 may be formed separately from the bracket body by injection molding and then assembled with each other to form an integral structure.

The shoulder 37 is provided with a first air passing hole 371, and air enters the first accommodating cavity 21 through the first air passing hole 371. Specifically, the first air passing hole 371 may be disposed corresponding to the first air flow channel and communicated with the first air flow channel, the sidewall of the bracket 36 is disposed with a second air passing hole 362, and the second air passing hole 362 is communicated with the first air flow channel and the second air flow channel; or, the first air passing hole 371 may be disposed corresponding to the second air flow channel and communicated with the second air flow channel, the side wall of the bracket 36 is provided with a second air passing hole 362, and the second air passing hole 362 is communicated with the first air flow channel and the second air flow channel; thus, the air entering the first receiving chamber 21 through the first air passing hole 371 may enter the first air flow path and the second air flow path.

Further, referring to fig. 2, the second air passing hole 362 is disposed corresponding to the proximal end of the tubular body 31.

When the heating element 3 includes an inductive material capable of heating in a changing magnetic field, the heating module 30 further includes an inductive generator (magnetic field generator 5) wound around the outer side of the bracket 36 and held in the first accommodating cavity 21 by the bracket 36, referring to fig. 2, the inductive generator is located between the bracket 36 and the heat-insulating shell 34.

In an embodiment, the heating module 30 further includes a shielding layer 38, the shielding layer 38 is disposed on the periphery of the magnetic induction generator, and the shielding layer 38 is located in the first accommodating cavity 21 and between the thermal insulation shell 34 and the magnetic induction generator (magnetic field generator 5). The shielding layer 38 is a magnetic shielding layer for preventing the magnetic field generated by the magnetic induction generator from leaking, so that the magnetic field can be more concentrated on the magnetic induction material, the utilization rate of the magnetic field is increased, and the heating efficiency of the magnetic induction material is improved.

In order to facilitate the temperature control of the air heater 32 by the controller 42, in the embodiment shown in fig. 3-6, the air heater 32 further comprises a first temperature detector 33, the temperature of the air heater 32 is detected by the first temperature detector 33, and then the controller 42 acquires the temperature data and further analyzes the temperature data.

In an embodiment, referring to fig. 4, the first temperature detector 5 is embedded inside the base 321 or the fixing portion 322, specifically, the detecting portion of the first temperature detector 33 may be disposed in the first air hole 323 or on the second air hole 324 of the fixing portion 322, so as to detect the temperature of the first air hole 323 or the second air hole 324 when air flows through the first air hole 323 or the second air hole 324, and further to more accurately obtain the temperature of the heated air, and the change of the air temperature in the first air hole 323 or the second air hole 324 can be captured by the first temperature detector 33 more timely and straightly. Conventionally, the first temperature detector is disposed on the surface of the heater, and when air rapidly flows through the air hole or the second air hole 324 of the heater due to suction, the air hole or the second air hole 324 may have a temperature greatly reduced due to direct contact with the air having a relatively low temperature, but since the surface of the air heater, such as the surface of the substrate, is not in direct contact with the cold air, the temperature change of the surface of the air heater is relatively insignificant during suction, thereby resulting in a relatively low detection sensitivity of the temperature detector. Adopt the scheme of this application, can be direct, quick, in time obtain the temperature of air in first gas pocket 323 or the second gas pocket 324, thereby can be more accurate acquire the temperature data of air, the high and this temperature data of detectivity is favorable to controller 42 in time and accurately to control by temperature to air heater, can in time prevent the high temperature and burn the aerosol and generate goods 1, or can in time be to improving the power supply to air heater 32, make air heater 32 resume fast and satisfy the target temperature of sucking at present, or resume the target temperature that satisfies next bite and suck the requirement, help improving user experience.

In one embodiment, referring to fig. 3-6, first temperature detector 33 includes a first thermocouple wire 351 and a second thermocouple wire 352.

In a preferred embodiment, at least a portion of the base 321 includes an electrically conductive material, preferably disposed in the first gas hole 323, and the first and second thermocouple wires 351 and 352 are electrically connected to each other through the electrically conductive material, thereby constituting a thermocouple for detecting the temperature of the base 321. In another preferred embodiment, at least a portion of the fixing portion 322 includes an electrically conductive material, preferably, the electrically conductive material is disposed in the second air hole 324, and the first thermocouple wire 351 and the second thermocouple wire 352 are electrically connected to each other through the electrically conductive material, thereby constituting a thermocouple for detecting the temperature of the fixing portion 322. In further embodiments, the entire base 321 is made of an electrically conductive material, and/or the entire fixing portion 322 is made of an electrically conductive material.

In a preferred embodiment, first thermocouple wire 351 and second thermocouple wire 352 are located in the same first gas hole 323. Of course, it is not excluded that the first thermocouple wire 351 and the second thermocouple wire 352 may be located in different first air holes 323. In another preferred embodiment, the first thermocouple wire 351 and the second thermocouple wire 352 are located in the same second air hole 324. Of course, it is not excluded that the first thermocouple wire 351 and the second thermocouple wire 352 may be located in different second air holes 324.

In a preferred embodiment, the first thermocouple wire 351 and the second thermocouple wire 352 are made of different thermocouple wire materials, for example, the first thermocouple wire 351 and the second thermocouple wire 352 are made of two different thermocouple materials, such as nickel, nickel-chromium alloy, nickel-silicon alloy, nickel-chromium-copper alloy, constantan, iron-chromium alloy, etc.

In a preferred embodiment, the first temperature detector 33 is disposed in a central region of the base 321, such as in a first air hole 323 located at the very center of the base 321. Of course, other first gas holes 323 may be provided beside the very central first gas hole 323 but still in the central area of the base 321.

In a preferred embodiment, the first temperature detector 33 may have a plurality of first air holes 323 and/or a plurality of second air holes 324, so that the temperature distribution information of the air heater can be known according to the temperature data of the air heater obtained by the plurality of first temperature detectors 33, or the real-time average temperature data of the air heater can be known, which helps to achieve more accurate temperature control of the air heater by the controller 42.

In a preferred embodiment, the first air hole 323 or the second air hole 324 accommodating the first temperature detector 33 or the thermocouple wire has a large size so that air can still pass therethrough after accommodating the first temperature detector 33 or the thermocouple wire. Preferably, the first air hole 323 accommodating the first temperature detector 33 or the thermocouple wire has a size larger than that of the other first air holes 323.

Referring to fig. 9, a second temperature detector 39 may be provided to detect the temperature of the tubular body 31, and the second temperature detector may be connected to the outer surface of the sidewall of the tubular body 31 and connected to the controller 42. The controller 42 controls the temperature of the tubular body 31 based on the acquired temperature data detected by the second temperature detector. In the embodiment shown in fig. 9, the tubular body 31 and the air heater 32 do not coincide.

The heating module 30 further includes a lead wire electrically connected to the magnetic induction generator or the heating element 3 or the temperature detector, and the lead wire is led out through the first air flow passage or the second air flow passage and then through the first air passing hole 371. That is, the first air hole 323 can allow both air to enter the first accommodation chamber 21 and lead wires in the first accommodation chamber 21 to pass out, thereby being electrically connected to the controller 41.

Alternatively, the fixing portion 322 and the base 321 of the air heater 32 may be integrally formed by the same material, such as graphite alloy powder.

Alternatively, the air heater 32 and the tubular body 31 are made of different magnetically susceptible materials, so as to have different heat generation efficiencies under the same changing magnetic field.

Alternatively, the tubular body 31 may be intermittently arranged along the axial direction of the receiving cavity 21, that is, the tubular body 31 may include a plurality of magnetic induction rings distributed along the axial direction, two adjacent magnetic induction rings are not connected to each other, and different magnetic induction rings may correspond to different magnetic induction generators, so that the controller 42 controls the working sequence or the working power of different magnetic induction generators to enable the tubular body 31 to heat the aerosol-generating article 1 in sections. Of course, the magnetic sense rings may be placed in the same changing magnetic field, and the magnetic sense rings may be made of the same material or of different materials.

The air heater is used for heating air entering the second accommodating cavity in the tubular body, and the tubular body is used for maintaining the high-temperature environment of the second accommodating cavity, so that when the air flows in the aerosol generating product in the second accommodating cavity, the temperature is excessively reduced, the filling degree of the air baking aerosol generating product is improved, and the aerosol is prevented from being condensed in the aerosol generating product.

Foretell heating module and aerosol generating device, I near-end of heat preservation shell have first inserted hole, the sealed structure of distal end, and heating element sets up in the heat preservation shell to heating element generates heat in the heat preservation shell, and the heat is inside by the heat preservation shell limitation to can carry out more effective heat preservation to heating element, help reducing the consumption of heating module.

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

1. A heating module, comprising:

the aerosol generating device comprises a heat preservation shell, a first accommodating cavity and a second accommodating cavity, wherein the heat preservation shell is internally provided with at least part of an aerosol generating product, and the near end of the heat preservation shell is provided with a first insertion opening communicated with the first accommodating cavity;

2. The heating module of claim 1, wherein the insulated housing is a unitary structure.

3. The heating module of claim 1, wherein said arched bottom is configured to reflect and focus infrared light.

4. The heating module of claim 3 wherein at least a portion of said heating element is exposed to a reflective range of said domed bottom; alternatively, the aerosol-generating article is received in the first receiving cavity such that it is at least partially exposed to the reflective extent of the domed bottom.

5. A heating module as claimed in claim 2, wherein the arched bottom has a vacuum interlayer in its wall and/or the insulating shell has a vacuum interlayer in its side wall.

6. A heating module according to claim 1, wherein the heating assembly comprises a tubular body having a second receiving cavity formed therein for receiving at least part of the aerosol-generating article.

7. The heating module of claim 6, wherein the heating assembly further comprises an air heater for heating air flowing therethrough;

the air heater is embedded into the bottom end of the tubular body and fixed;

the air heater comprises a base body penetrated by a plurality of first air holes, and the first air holes are communicated with the second accommodating cavity.

8. The heating module as set forth in claim 7, wherein the air heater further comprises a fixing portion provided on at least a partial side surface of the base, the base being engaged with the tubular body through the fixing portion;

the fixing part and the tubular body jointly define a second air hole, and part of air in the air flow channel enters the second accommodating cavity through the second air hole.

9. A heating module according to any one of claims 6 to 8, characterized in that the tubular body is an electromagnetic heating element, an electrical resistance heating element, an infrared heating element or a thermal insulating tube.

10. The heating module of any one of claims 6-8, wherein the proximal end of the heating module is provided with a first air passing hole to allow air to enter the first receiving cavity; the arched bottom of the heat preservation shell defines a convex air cavity;

the first containing cavity is internally provided with a first air flow passage, and at least part of air in the first air flow passage flows from the proximal end to the distal end of the heat preservation shell, then passes through the convex air cavity and finally enters the second containing cavity.

11. The heating module of claim 10, wherein the tubular body is an electromagnetic heating element, a resistance heating element, an infrared heating element, or a thermal insulating tube; the heating module further comprises a second air flow channel, and the second air flow channel is arranged to be tightly attached to the outer side surface of the tubular body;

a portion of the air in the first air flow channel is diverted into the second air flow channel through the second air passing hole and flows along the tubular body from the proximal end to the distal end thereof.

12. The heating module of claim 11, wherein air of the second air flow channel enters the second receiving cavity through the second air hole.

13. The heating module of claim 1, further comprising a bracket comprising a shoulder or a bracket body; the shoulder part is connected with the heat preservation shell to jointly define the first accommodating cavity; the heating assembly is fixed on the bracket body and is kept in the first accommodating cavity.

14. The heating module of claim 13, wherein the heating element further comprises a magnetically susceptible material that heats in a changing magnetic field;

the heating module further comprises a magnetic induction generator, and the magnetic induction generator is wound on the outer side of the support.

15. The heating module of claim 14, further comprising a shield layer disposed in the first receiving cavity and located at a periphery of the magnetic induction generator.

16. The heating module as claimed in claim 13, wherein the shoulder is provided with an air hole for air intake of the first accommodating cavity and/or a threading hole for passing a lead wire of the heating module.

17. The heating module of claim 7, wherein the air heater is made of a graphite alloy.

18. An aerosol generating device comprising a heating module according to any of claims 1 to 16.