CN221179391U - Aerosol generating device - Google Patents

Abstract

The embodiment of the utility model relates to the technical field of aerosol generating devices, and particularly discloses an aerosol generating device which comprises a bracket, a power supply, an induction coil, a porous body and an induction body, wherein the induction coil is wound on the bracket, the induction coil is electrically connected with the power supply, the induction coil is configured to provide an alternating magnetic field, the porous body is provided with a plurality of through air flow channels, the induction body is kept on the porous body, the side wall of the induction body is provided with a plurality of through holes, the induction body is at least partially positioned in the penetrating range of the alternating magnetic field, and the induction body is configured to generate heat under the action of the alternating magnetic field. According to the embodiment of the utility model, the side wall of the inductor is provided with the through holes, so that on one hand, the self-mass of the inductor can be reduced, and therefore, the consumption of heat by the inductor can be reduced, and on the other hand, the induction current generated on the inductor can be more concentrated, and the heating efficiency of the inductor can be improved. Thereby not only reducing energy consumption, but also improving heating efficiency.

Description

Aerosol generating device

Technical Field

The embodiment of the utility model relates to the technical field of aerosol generating devices, in particular to an aerosol generating device.

Background

The aerosol-generating device is used to heat an aerosol-generating article to generate an aerosol, and the most important component of the aerosol-generating device is the heating device. In a typical aerosol-generating device, the heating means comprises an electromagnetic heater capable of generating heat in a varying magnetic field and a porous member allowing air to pass through, there being heat transfer between the electromagnetic heater and the porous member, whereby the porous member is capable of absorbing heat from the electromagnetic heater to raise the temperature and then heat the air flowing through the interior thereof. However, a considerable portion of the heat generated by the existing electromagnetic heater is consumed by itself, resulting in a greater energy consumption.

Disclosure of utility model

The technical problem to be solved by the embodiment of the utility model is to provide the aerosol generating device which can reduce energy consumption.

In order to solve the technical problems, one technical scheme adopted by the embodiment of the utility model is as follows: there is provided an aerosol-generating device comprising a support, a power supply, an induction coil, a porous body and an inductor, the induction coil being wound around the support, the induction coil being electrically connected to the power supply, the induction coil being configured to provide an alternating magnetic field; the porous body has a plurality of gas flow channels therethrough; an inductor is held on the porous body, the inductor has a plurality of through holes on a side wall, the inductor is at least partially in a penetration range of the alternating magnetic field, and the inductor is configured to generate heat under the action of the alternating magnetic field.

In an alternative, at least part of the sensing body is configured in a tubular shape and is sleeved on the outer peripheral surface of the porous body.

In an alternative, at least part of the sensing body is embedded in the center of the porous body; or at least a part of the sensing body is embedded between the center and the outer peripheral surface of the porous body.

In an alternative manner, at least part of the sensing body is embedded in the porous body, and part of the air flow channel is arranged on the inner side of the sensing body, and part of the air flow channel is arranged on the outer side of the sensing body.

In an alternative, the wall thickness of the inductor is between 0.05mm and 0.5mm.

In an alternative manner, the through hole includes at least one of a circular hole, a square hole, a triangular hole, or an elliptical hole.

In an alternative, the porous body comprises graphite, graphite alloy, or foam metal.

In an alternative, the porous body is configured to generate heat under the influence of an alternating magnetic field, and the porous body has a different magnetic permeability or a different curie temperature than the sensing body.

In an alternative, the magnetic permeability of the porous body is lower than the magnetic permeability of the sensing body.

In an alternative, the porous body has a softer texture than the sensing body.

In an alternative, the porous body includes an overlap portion and an exposed portion, the overlap portion overlapping the porous body; the aerosol-generating device further comprises a temperature detector, the temperature detector being in close proximity to the exposed portion.

In an alternative form, a thermal barrier is provided between the support and the porous body.

The embodiment of the utility model has the beneficial effects that: unlike the prior art, the embodiment of the utility model comprises a bracket, a power supply, an induction coil, a porous body and an induction body, wherein the induction coil is wound on the bracket, the induction coil is electrically connected with the power supply, the induction coil is configured to provide an alternating magnetic field, the porous body is provided with a plurality of air flow channels penetrating through, the induction body is kept on the porous body, the side wall of the induction body is provided with a plurality of through holes, the induction body is at least partially positioned in the penetrating range of the alternating magnetic field, and the induction body is configured to generate heat under the action of the alternating magnetic field. According to the embodiment of the utility model, the side wall of the inductor is provided with the through holes, so that on one hand, the self-mass of the inductor can be reduced, and therefore, the consumption of heat by the inductor can be reduced, and on the other hand, the induction current generated on the inductor can be more concentrated, and the heating efficiency of the inductor can be improved. Thereby not only reducing energy consumption, but also improving heating efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic view of the overall structure of a heating device according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the overall structure of a heating device according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram illustrating the installation of an inductor of a heating device according to an embodiment of the present utility model;

FIG. 4 is a second schematic diagram illustrating the installation of an inductor of a heating device according to an embodiment of the present utility model;

fig. 5 is a schematic view showing the overall structure of a heating device according to still another embodiment of the present utility model.

Reference numerals illustrate:

100 heating device, 1 support, 2 induction coil, 3 porous body, 31 air current passageway, 4 inductor, 41 through-holes, 5 heat-generating body.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like as used in this specification, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, an aerosol-generating device comprises a heating device 100, a support 1 and a power supply, wherein the heating device 100 comprises an induction coil 2, a porous body 3 and an induction body 4, the induction coil 2 is wound on the support 1, the induction coil 2 is electrically connected with the power supply, the induction coil 2 is configured to provide an alternating magnetic field, the power supply provides electric energy for the induction coil 2, the porous body 3 is provided with a plurality of air flow channels 31 penetrating through, the induction body 4 is held on the porous body 3, the side wall of the induction body 4 is provided with a plurality of through holes 41, the induction body 4 is at least partially positioned in the penetrating range of the alternating magnetic field, and the induction body 4 is configured to generate heat under the action of the alternating magnetic field, namely, the induction body 4 can conduct magnetism. Wherein, the induction body 4 generates heat under the action of the alternating magnetic field and transmits the heat to the porous body 3, so that the air flowing through the plurality of air flow channels 31 of the porous body 3 is heated, thereby realizing heating of the object to be heated in contact with the hot air.

For the above-described stent 1, referring to fig. 1 and 2, the stent 1 comprises a hollow tubular body having an outer circumferential surface and an inner circumferential surface, and the induction coil 2 is wound around and fixed to the outer circumferential surface of the stent 1 by, but not limited to, bonding, clamping or pressing, and at least part of the porous body 3 may be disposed inside the hollow of the stent 1.

In an example, a heat insulating layer is provided between the porous body 3 and the inner peripheral surface of the support 1, and when the heating apparatus 100 is applied to an electronic device, heat generated by the porous body 3 and the inductor 4 under the action of an alternating magnetic field can be prevented from being transferred to the support 1 by the heat insulating layer, and thus the induction coil 2 wound around the support 1 can be prevented from having a high temperature.

In an example, the heating device 100 further comprises a holding tube having an at least partial receiving cavity therein for receiving the aerosol-generating article, at least a portion of the holding tube being held in the hollow interior of the holder 1. The porous body 3 is disposed upstream of the accommodation chamber and may be connected with a holding tube. The holding tube and the inner peripheral surface of the bracket 1 may have a heat insulating layer therebetween, which may be a solid heat insulating layer made of a heat insulating material including air heat insulating layer, and/or aerogel, felt, foam, or the like.

For the above-mentioned porous body 3, please refer to fig. 1 and 2, the porous body 3 is in a column shape, which has two opposite ends, and a plurality of air flow channels 31 extend from one end of the porous body 3 to the opposite end of the porous body 3, so as to realize penetration of the porous body 3, and the column shape of the porous body 3 and the cross-sectional shape of the air flow channels 31 include, but are not limited to, circular, polygonal or other regular and irregular patterns.

In some embodiments, referring to fig. 1 and 2, the cylindrical shape of the porous body 3 and the cross-sectional shape of the airflow channels 31 are both circular, so as to form a cylindrical porous body 3 and a plurality of cylindrical airflow channels 31, and the plurality of cylindrical airflow channels 31 are distributed in an annular array from the center of the cylindrical porous body 3 to the periphery.

The sensing body 4 is in contact with the porous body 3, and a part of heat generated by the sensing body 4 can be absorbed by the porous body 3 through heat conduction, so that the porous body 3 is warmed, and the porous body 3 heats the air flowing through the air flow passage 31 mainly by releasing a part of heat absorbed from the sensing body 4.

In some embodiments, to increase the heating efficiency of the heating device 100, the porous body 3 is also configured to generate heat under the influence of an alternating magnetic field, i.e. the porous body 3 is also magnetically permeable. Both the porous body 3 and the sensing body 4 are thus able to generate heat under the influence of the alternating magnetic field and both are almost simultaneously able to generate heat.

Based on this, as an example, the porous body 3 and the induction body 4 have different magnetic conductivities, so that the porous body 3 and the induction body 4 have heat transfer with each other under the same alternating magnetic field. Preferably, the magnetic permeability of the inductor 4 is greater than that of the porous body 3, so that under the same alternating magnetic field, the heat generated by the inductor 4 and the response time are better than those of the porous body 3, and the heat generated by the inductor 4 can be transferred to the porous body 3. The porous body 3 capable of generating heat by the alternating magnetic field has a faster temperature rising rate and air heating efficiency than the porous body 3 incapable of generating heat by the alternating magnetic field.

In this example, the porous body 3 may be made of one or more of graphite, graphite alloy, or foam metal materials including, but not limited to, nickel foam, copper foam, aluminum foam, stainless steel foam, nickel-iron foam, or the like. The inductor 4 may be made of a nickel-iron magnetic alloy material having a higher magnetic permeability.

As an example, the porous body 3 has a softer texture than the sensing body 4. The soft material is convenient to manufacture and process the through air flow channel 31, but because the volume of the heating device 100 is small due to space limitation, and the air flow channel 31 is difficult to manufacture on the material with small volume and large hardness, the embodiment of the application adopts the porous body 3 with soft texture to be combined with the sensing body 4 with hard texture, thereby not only meeting the condition of being convenient for manufacturing the air flow channel 31, but also meeting the requirement of rapidly generating high heat, and further leading the heating device 100 to have smaller volume.

The graphite or graphite alloy has softer texture, can conveniently manufacture and process the through air flow channel 31, and meanwhile, the graphite or graphite alloy has compact air holes, which is beneficial to further enhancing the circulation capacity of air flow, but the graphite or graphite alloy has lower magnetic permeability, and the heat generated in a magnetic field is slower and the heat is lower; the magnetic permeability of the ferronickel alloy material is higher, so that higher heat can be quickly generated in a magnetic field, but the small-volume ferronickel alloy material is difficult to manufacture the air flow channel 31, so that the inductor 4 made of the ferronickel alloy material is combined with the porous body 3 made of graphite or graphite alloy material in the embodiment of the application, and the product performance of the aerosol generating device is effectively improved.

As an example, the porous body 3 and the sensing body 4 have different curie temperatures, but not limited thereto.

In some embodiments, the cross-sectional shape of the plurality of gas flow channels 31 of the porous body 3 is circular, and the diameter D1 of the gas flow channels 31 satisfies: by adopting the scheme of small-diameter air flow channels 31, the number of the air flow channels 31 can be increased in the limited space of the porous body 3, so that the contact area between the porous body 3 and air is increased, and the heating efficiency of the air flowing through the air flow channels 31 can be improved.

In some embodiments, the ratio of the sum of the areas of the cross-sections of the plurality of gas flow channels 31 of the porous body 3 to the area of the cross-section of the porous body 3 is greater than or equal to 1/5; wherein the cross section of the air flow channel 31 is within the cross section of the porous body 3, and the cross section of the air flow channel 31 and the cross section of the porous body 3 are perpendicular to the central line of the porous body 3. On the premise of meeting the structural stability of the porous body 3, the ratio of the area of the cross section of the airflow channel 31 to the area of the cross section of the porous body 3 is closer to 1, which means that the larger the effective area of the airflow channel 31 is, the larger the flow area of air can be provided; when the area of the cross section of the single gas flow passage 31 is determined, the number of gas flow passages 31 that can be provided on the porous body 3 is also increased.

For the above-mentioned inductor 4, please refer to fig. 1 and 2, at least part of the inductor 4 is configured as a hollow tube, in other words, the inductor 4 comprises a tube-like inductor, and the shape of the cross section of the tube-like inductor includes, but is not limited to, a circle, a polygon or other regular and irregular patterns. The cross-sectional shape of the tubular inductor is preferably the same as that of the porous body 3, and by the arrangement of the same cross-sectional shape, the inductor 4 and the porous body 3 can be conveniently connected, and the contact area between the inductor 4 and the porous body 3 can be increased, so that the heat conduction efficiency of the inductor 4 and the porous body 3 can be improved. Meanwhile, the shape of the through hole 41 of the sidewall of the sensing body 4 includes, but is not limited to, at least one of a circular hole, a square hole, a triangular hole, or an elliptical hole.

In order to reduce the consumption of heat generated by the inductor 4, the inductor 4 may have a smaller wall thickness. In order to ensure the heating efficiency of the inductor 4, the wall thickness of the inductor 4 needs to be greater than the skin depth at which it generates the induced current. In one example, the wall thickness of the inductor 4 is between 0.05mm and 0.5mm, wherein the wall thickness of the inductor 4 is preferably between 0.15mm and 0.35mm. The mass of the inductor 4 is reduced by reducing the wall thickness of the inductor 4, based on the energy formula: q=cmΔt, Q is heat, C is specific heat capacity, Δt is temperature rise, M is mass, and it can be seen that the smaller the mass, the smaller the heat consumed at the temperature rise from room temperature to a preset heating temperature, so that the heat generated by the inductor 4 can be more released to the porous body 3 and absorbed by the porous body 3, whereby the energy consumption can be reduced and the energy utilization rate and heating efficiency can be improved.

The plurality of through holes 41 are formed in the side wall of the inductor 4, so that the mass of the inductor 4 can be reduced. Meanwhile, when the side wall of the inductor 4 is provided with a plurality of through holes 41, the induction current generated by the inductor 4 can be more concentrated, so that the heating efficiency and the heat generating efficiency of the inductor 4 can be improved.

In some embodiments, the ratio of the sum of the areas of the plurality of through holes 41 of the susceptor 4 to the surface area of the outer surface of the susceptor 4 is greater than or equal to 1/5.

In some embodiments, referring to fig. 3, the tubular sensing body is sleeved on the outer peripheral surface of the porous body 3, so as to reduce the difficulty of jointing the tubular sensing body with the porous body 3.

Wherein, the outer peripheral surface of the porous body 3 is sleeved with the sensing body 4, which comprises two conditions: first, the inner peripheral surface of the tubular sensing body is in contact with part of the outer peripheral surface of the porous body 3, i.e. part of the outer peripheral surface of the porous body 3 is exposed outside the sensing body 4; second, the inner peripheral surface of the tubular sensing body is entirely in contact with the entire outer peripheral surface of the porous body 3, that is, the sensing body 4 entirely surrounds the porous body 3, and at this time, the heat exchange area between the sensing body 4 and the porous body 3 is maximized, and the heat conduction efficiency between the sensing body 4 and the porous body 3 is maximized.

In some embodiments, referring to fig. 4, at least part of the sensing body 4 is embedded in the center of the porous body 3, i.e. part of the sensing body 4 is embedded in the center of the porous body 3 or the sensing body 4 is completely embedded in the center of the porous body 3. In one example, the center of the porous body 3 may be provided with a mounting groove, which may extend through the porous body 3, or may be a blind groove. At least part of the sensing body 4 is arranged in the mounting groove; at least part of the inductor 4 having a plurality of through holes 41 in the side wall thereof in the mounting groove may be tubular or may be sheet-shaped.

In some embodiments, the tubular sensing body is at least partially embedded between the center and the outer circumferential surface of the porous body 3, i.e. the tubular sensing body is partially embedded between the center and the outer circumferential surface of the porous body 3, or the sensing body 4 is completely embedded between the center and the outer circumferential surface of the porous body 3. Based on this, in one example, a part of the air flow passage 31 is located between the outer peripheral surface of the porous body 3 and the tubular sensing body, and a part of the air flow passage 31 is located inside and surrounded by the tubular sensing body. In one example, all of the air flow channels 31 are located inside and surrounded by the tubular induction body, and the periphery of the tubular induction body may not be provided with the air flow channels 3.

In some embodiments, referring to fig. 5, in order to improve the heating efficiency of the heating device 100, besides the inductor 4, a heating element 5 is further included, where the heating element 5 is rod-shaped, needle-shaped or tubular, the heating element 5 is embedded in the center of the porous body 3, the heating element 5 is configured to generate heat in a resistive manner and is electrically connected to a power supply, at this time, the inductor 4 is hollow tubular and is sleeved on the outer peripheral surface of the porous body 3, after both the heating element 5 and the inductor 4 generate heat, the heat generated by the heating element 5 is transferred and diffused from the center of the porous body 3 to the periphery of the porous body 3, and the heat generated by the inductor 4 is transferred and diffused from the periphery of the porous body 3 to the center, so that the porous body 3 is uniformly heated and local overheating of the porous body 3 is avoided.

Further, with respect to the porous body 3 and the sensing body 4, since the volume of the porous body 3 and the sensing body 4 is small, if the sensing coil 2 is wound around only the outer circumferential surface of the holder 1, the inductance of the sensing coil 2 is low and the heat generated by the porous body 3 and the sensing body 4 is insufficient or slow, so, referring to fig. 2 to 4, the winding range of the sensing coil 2 around the holder 1 is larger than the whole length range of the porous body 3 and the sensing body 4. The method specifically comprises the following steps: the length of the winding coverage area of the induction coil 2 on the bracket 1 is larger than the integral length of the porous body 3 and the induction body 4 extending inside the bracket 1; or the length of the wound coverage area of the induction coil 2 on the support 1 is approximately the entire length of the porous body 3 and the induction body 4 extending inside the support 1.

Further, to avoid excessive temperature of the heating device 100, in some embodiments, the porous body 3 includes an overlapping portion overlapping the porous body 3 and an exposed portion, and the heating device 100 further includes a temperature detector (not shown) that is closely attached to the exposed portion. The temperature detector (not shown) may be configured to be connected to an external control system, the external control system may be configured to be connected to a power supply, and the temperature detector (not shown) is used to detect the temperature of the porous body 3 and feed back to the external control system, so that the external control system controls the on-off of the power supply, and further controls the continuation or stop of the induction heat generation of the induction body 4, so as to realize real-time monitoring of the temperature of the heating device 100, and avoid the temperature of the heating device 100 from being too high.

In one embodiment, the heating device 100 further comprises a temperature detector, the part of the sensing body 4 extending outside the porous body 3, the temperature detector being connected to the sensing body 4 extending outside the porous body 3 for checking the temperature of the sensing body 4, and the temperature detector being connected to a control system, the control system controlling the power supplied by the power supply to the induction coil based on the temperature detected by the temperature detector.

The embodiment of the utility model comprises a bracket 1, a power supply, an induction coil 2, a porous body 3 and an induction body 4, wherein the induction coil 2 is wound on the bracket 1, the induction coil 2 is electrically connected with the power supply, the induction coil 2 is configured to provide an alternating magnetic field, the porous body 3 is kept on the bracket 1, the porous body 3 is provided with a plurality of air flow channels 31 penetrating through, the induction body 4 is kept on the porous body 3, the side wall of the induction body 4 is provided with a plurality of through holes 41, the induction body 4 is at least partially positioned in the penetrating range of the alternating magnetic field, and the induction body 4 is configured to generate heat under the action of the alternating magnetic field. According to the embodiment of the utility model, the plurality of through holes 41 are formed in the side wall of the inductor 4, so that on one hand, the self-mass of the inductor can be reduced, and therefore, the consumption of heat by the inductor can be reduced, and on the other hand, the induction current generated on the inductor can be more concentrated, and the heating efficiency of the inductor can be improved. Thereby not only reducing energy consumption, but also improving heating efficiency.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (12)

1. An aerosol-generating device, comprising:

A bracket;

A power supply;

An induction coil wound around the bracket, the induction coil being electrically connected to the power supply, the induction coil being configured to provide an alternating magnetic field;

A porous body having a plurality of gas flow passages therethrough;

An inductor retained on the porous body, the inductor having a plurality of through holes in a sidewall thereof, the inductor being at least partially within a penetration range of the alternating magnetic field, and the inductor being configured to generate heat under the influence of the alternating magnetic field.

2. An aerosol-generating device according to claim 1, wherein,

At least part of the induction body is configured in a tubular shape and is sleeved on the outer peripheral surface of the porous body.

3. An aerosol-generating device according to claim 1, wherein,

At least part of the induction body is embedded in the center of the porous body; or alternatively

At least part of the inductor is embedded between the center and the outer peripheral surface of the porous body.

4. An aerosol-generating device according to claim 1, wherein,

At least part of the inductor is embedded in the porous body, part of the airflow channel is arranged on the inner side of the inductor, and part of the airflow channel is arranged on the outer side of the inductor.

5. An aerosol-generating device according to claim 1, wherein,

The wall thickness of the inductor is between 0.05mm and 0.5mm.

6. An aerosol-generating device according to claim 1, wherein,

The through hole comprises at least one of a round hole, a square hole, a triangular hole or an elliptical hole.

7. An aerosol-generating device according to claim 1, wherein,

The porous body comprises graphite, graphite alloy or foam metal.

8. An aerosol-generating device according to claim 1, wherein,

The porous body is configured to generate heat under the action of an alternating magnetic field, and the porous body has a different magnetic permeability or a different curie temperature than the induction body.

9. An aerosol-generating device according to claim 8, wherein,

The magnetic permeability of the porous body is lower than the magnetic permeability of the sensing body.

10. An aerosol-generating device according to claim 8, wherein,

The porous body has a softer texture than the sensing body.

11. An aerosol-generating device according to any of claims 1-4, wherein the porous body comprises an overlap portion and an exposed portion, the overlap portion overlapping the porous body;

the aerosol-generating device further comprises a temperature detector, the temperature detector being in close proximity to the exposed portion.

12. An aerosol-generating device according to any of claims 1-10, wherein,

A heat insulation layer is arranged between the bracket and the porous body.