A dielectric heating aerosol generating structure with comb-type electrodes

Abstract

The present invention provides a dielectric heating aerosol generating structure with comb-type electrodes, which relates to the field of aerosol generation technology and includes an aerosol generating component and an aerosol generating device. The aerosol generating component includes an aerosol generating substrate, a filter tip, and a hollow acetate tube. A sensor is provided in the aerosol generating substrate. The aerosol generating device is provided with a working chamber, and a comb-type electrode is provided in the working chamber. The aerosol generating device is provided with a power supply and a controller, so that when the aerosol generating substrate is inserted into the working chamber, the controller controls the power supply to generate alternating current to power the comb-type electrode, thereby forming an alternating electric field dielectric heating sensor. The present invention has a simple structure and adopts a dielectric heating method to effectively heat the inside and outside of the entire aerosol generating substrate to generate aerosol. The comb-type electrode can guide the insertion and clamping of the aerosol generating component, while having high heating efficiency, and can also promote uniform heat distribution during the dielectric heating process.

Description

Technical Field

[0001] The present invention relates to the field of aerosol generation technology.

[0002] In particular, the present invention relates to a dielectrically heated aerosol generating structure having comb-type plates. Background Art

[0003] As cigarette production technology continues to advance, cigarette types and appearances are becoming more diverse. Cigarettes with unique appearances are becoming more popular, leading to a need to heat cigarettes and a growing demand for aerosol-generating devices that generate vapor by heating the aerosol-generating substances in cigarettes rather than burning them. Consequently, research on heated cigarettes and heated aerosol-generating devices is actively underway.

[0004] Most existing aerosol-generating devices use a sheet-like member formed of a heat-conductive material to uniformly heat the exterior of the aerosol-generating device to generate aerosol. For example, Chinese invention patent CN112423608A discloses an aerosol-generating device comprising: an aerosol-generating portion comprising a first aerosol-generating substance that does not contain nicotine; a tobacco-filling portion disposed adjacent to an end of the aerosol-generating portion and comprising a second aerosol-generating substance that contains nicotine; a cooling portion disposed adjacent to the end of the tobacco-filling portion and configured to cool the aerosol; and a mouthpiece disposed adjacent to the end of the cooling portion.

[0005] However, the above-mentioned aerosol generating article, namely the aerosol generating method, still has the following problems: the heating method still uses a resistance heating element, and the resistance heating element can only be placed inside the heating chamber, resulting in poor adhesion between the resistance heating element and the aerosol generating article, low heating efficiency, and only the outside of the aerosol generating article can be heated, but the heating effect on the inside is poor, resulting in uneven heating of the entire aerosol generating article, poor quality of the generated aerosol, and a poor puffing experience for the puffer.

[0006] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable and efficient dielectric heating aerosol generating structure with comb-type electrodes. Summary of the Invention

[0007] The object of the present invention is to provide a dielectric heating aerosol generating structure with comb-type electrodes that has a simple structure and uses dielectric heating instead of resistive heating to effectively heat the inside and outside of the entire aerosol generating substrate to generate aerosols. The comb-type electrodes can further guide the insertion and clamping of the aerosol generating parts, thereby achieving high heating efficiency and promoting uniform heat distribution during the dielectric heating process.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A dielectrically heated aerosol generating structure with a comb-type electrode plate comprises an aerosol generating component and an aerosol generating device, wherein the aerosol generating component comprises an aerosol generating substrate, a filter tip and a hollow acetate tube arranged between the filter tip and the aerosol generating substrate, a receptor is arranged in the aerosol generating substrate, and the aerosol generating device is provided with a working chamber for facilitating the insertion of the aerosol generating substrate, wherein the comb-type electrode plate is arranged in the working chamber, and the aerosol generating device is further provided with a power supply for supplying power to the comb-type electrode plate and a controller for controlling the power supply to generate alternating current, so that when the aerosol generating substrate is inserted into the working chamber, the controller controls the power supply to generate alternating current to supply power to the comb-type electrode plate, thereby forming an alternating electric field at the comb-type electrode plate to dielectrically heat the receptor.

[0010] As a preferred embodiment of the present invention, the comb-type electrode plate includes a first main rod, a second main rod, an anode plate connected to the first main rod, and a cathode plate connected to the second main rod, the anode plate and the cathode plate are respectively connected to the positive and negative poles of the power supply, and the anode plate and the cathode plate are arranged in parallel.

[0011] As a preferred embodiment of the present invention, a protrusion extending between the anode plate and the cathode plate is provided in the working chamber.

[0012] As a preferred embodiment of the present invention, the anode plate and the cathode plate are both arranged on the inner side wall of the working chamber, and an envelope space is formed between the anode plate and the cathode plate for facilitating the insertion of the aerosol generating substrate.

[0013] As a preference of the present invention, the number of the anode plate and the cathode plate is at least one, and there is at least one cathode plate between two adjacent anode plates.

[0014] As a preferred embodiment of the present invention, the diameter of the envelope space enclosed between the anode plate and the cathode plate near the open end of the working chamber is not less than the diameter of the envelope space enclosed between the anode plate and the cathode plate near the bottom end of the working chamber.

[0015] As a preferred embodiment of the present invention, a wrapping layer is provided on the outer side of the aerosol generating member.

[0016] As a preferred embodiment of the present invention, a switch electrically connected to the controller is provided on the side wall of the aerosol generating device.

[0017] As a preferred embodiment of the present invention, the side wall of the aerosol generating device is provided with a through hole for communicating with the working chamber.

[0018] As a preferred embodiment of the present invention, the sensor is a plurality of granular spherical pieces with openings on the surface.

[0019] The beneficial effects of the dielectric heating aerosol generating structure with comb-type electrodes of the present invention are: simple structure, using dielectric heating instead of resistance heating, can effectively heat the inside and outside of the entire aerosol generating substrate to generate aerosol, and the comb-type electrode arrangement can further guide the insertion and clamping of the aerosol generating part, while having high heating efficiency and promoting uniform heat distribution during the dielectric heating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of a dielectric heating aerosol generating structure with comb-type electrodes according to an embodiment of the present invention;

[0021] Figure 2 A schematic front cross-sectional view of the overall structure of an embodiment of a dielectric heating aerosol generating structure with comb-type electrodes according to the present invention;

[0022] Figure 3 Schematic diagram of the disassembled structure of a comb-type electrode plate in an embodiment of a dielectric heating aerosol generating structure having a comb-type electrode plate according to the present invention;

[0023] Figure 4 1 is a perspective schematic diagram of an aerosol generating device in one embodiment of a dielectric heating aerosol generating structure having a comb-type electrode plate according to the present invention;

[0024] Figure 5 FIG1 is a schematic top view of an aerosol generating device in another embodiment of a dielectric heating aerosol generating structure with comb-type electrodes according to the present invention;

[0025] Figure 6 FIG1 is a schematic top view of an aerosol generating device in another embodiment of a dielectric heating aerosol generating structure with comb-type electrodes according to the present invention;

[0026] In the figure: 1. Aerosol generating device, 11. Working chamber, 12. Comb-type electrode plate, 121. Anode plate, 122. Cathode plate, 123. First main rod, 124. Second main rod, 13. Power supply, 14. Controller, 15. Through hole, 16. Switch, 2. Aerosol generating component, 21. Filter tip, 22. Aerosol generating substrate, 23. Receptor, 24. Hollow acetate tube. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention, which further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of modules and steps set forth in these embodiments and the steps do not limit the scope of the present invention.

[0029] At the same time, it should be understood that for the convenience of description, the processes in the drawings are not just performed individually, but multiple steps are performed in an intersecting manner.

[0030] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the product of the present invention is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0032] Technologies, methods, and systems known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, the technologies, methods, and systems should be considered part of the authorization specification.

[0033] Example 1: Figures 1 to 4The figure is only one embodiment of the present invention, a dielectric heating aerosol generating structure with a comb-type electrode, comprising an aerosol generating component 2 and an aerosol generating device 1, wherein the aerosol generating component 2 comprises an aerosol generating substrate 22, a filter 21 and a hollow acetate tube 24 disposed between the filter 21 and the aerosol generating substrate 22, wherein a sensor 23 is disposed in the aerosol generating substrate 22, and the aerosol generating device 1 is provided with a sensor for facilitating the insertion of the aerosol generating substrate 22. A working chamber 11 is provided in the working chamber 11, and a comb-type electrode plate 12 is provided in the working chamber 11. The aerosol generating device 1 is further provided with a power supply 13 for supplying power to the comb-type electrode plate 12 and a controller 14 for controlling the power supply 13 to generate alternating current, so that when the aerosol generating substrate 22 is inserted into the working chamber 11, the controller 14 controls the power supply 13 to generate alternating current to supply power to the comb-type electrode plate 12, thereby forming an alternating electric field at the comb-type electrode plate 12 to dielectrically heat the receptor 23.

[0034] Moreover, the comb-type electrode 12 includes a first main rod 123, a second main rod 124, an anode plate 121 connected to the first main rod 124, and a cathode plate 122 connected to the second main rod 124. The anode plate 121 and the cathode plate 122 are respectively connected to the positive and negative poles of the power supply 13 (in fact, the anode plate 121 is connected to the positive pole of the power supply 13 through the first main rod 123; the cathode plate 122 is connected to the negative pole of the power supply 13 through the second main rod 124), and the anode plate 121 and the cathode plate 122 are arranged in parallel.

[0035] In the present invention, one end of the aerosol generating component 2 close to the aerosol generating substrate 22 is inserted into the working chamber 11 of the aerosol generating device 1. The anode plate 121 and the cathode plate 122 in the comb-type electrode plate 12 in the working chamber 11 are respectively connected to the positive and negative poles of the power supply 13. Then, the controller 14 controls the power supply 13 to generate alternating current, so that an alternating electric field is formed between the anode plate 121 and the cathode plate 122 to dielectrically heat the receptor 23. The electric dipoles in the receptor medium rotate and vibrate violently along the direction of the electric field, and the friction between the molecules generates heat, thereby heating the aerosol generating substrate 22 to generate aerosol. Since the receptor 23 is arranged in the aerosol generating substrate 22, it is equivalent to uniformly heating the aerosol generating substrate 22 from the inside.

[0036] Moreover, in the present embodiment, there is at least one anode plate 121 and at least one cathode plate 122 in the comb-type electrode 12. Generally speaking, a plurality of the anode plates 121 and cathode plates 122 are evenly distributed on the inner wall of the working chamber 11, and there is at least one cathode plate 122 between two adjacent anode plates 121, that is, the anode plates 121 and the cathode plates 122 are spaced apart on the inner wall of the working chamber 11, so that the heating effect on the medium of the receptor 23 is more uniform, further promoting uniform heat distribution.

[0037] Here, the first main rod 123 and the second main rod 124 are extended along the axial direction of the working chamber 11 and are arranged on the inner wall of the working chamber 11, and the anode plate 121 and the cathode plate 122 are extended along the circumferential direction of the working chamber 11 and are arranged on the inner wall of the working chamber 11, and an envelope space is formed between the anode plate 121 and the cathode plate 122 to facilitate the insertion of the aerosol generating substrate 22.

[0038] Furthermore, the diameter of the envelope space enclosed between the anode plate 121 and the cathode plate 122 near the open end of the working chamber 11 is not less than the diameter of the envelope space enclosed between the anode plate 121 and the cathode plate 122 near the bottom end of the working chamber 11. This can provide the working chamber 11 with a gradually decreasing cross-sectional area, which can facilitate insertion of the aerosol-generating article 2 between the anode plate 121 and the cathode plate 122.

[0039] Of course, a protrusion 111 is provided in the working chamber 11 for extending between the anode plate 121 and the cathode plate 122. In fact, each anode plate 121 or cathode plate 122 is located between two adjacent protrusions 111. The protrusion 111 can not only limit the anode plate 121 and the cathode plate 12, but also prevent the anode plate 121 and the cathode plate 12 from directly contacting each other and causing a short circuit of the power supply 13.

[0040] In addition, the aerosol generating component 2 further includes a filter tip 21 and a hollow acetate tube 24 disposed between the filter tip 21 and the aerosol generating substrate 22 , and a through hole 15 is disposed on the side wall of the aerosol generating device 1 for communicating with the working chamber 11 .

[0041] In this way, when the inhaler inhales towards the filter tip 21 of the polymer material of the aerosol generating member 2, the airflow is inhaled into the working chamber 11 through the through hole 15. The airflow then flows into the mixture of the aerosol-forming base 22 and the receptor 23 medium, where an aerosol is formed and entrained in the airflow. Finally, the airflow and aerosol flow through the hollow acetate tube 24 and the polymer filter tip 21 to be delivered to the inhaler's mouth.

[0042] In this embodiment, the controller 14 controls the power source 13 to generate an alternating current with a frequency of no less than 2 MHz. The frequency range of the high-frequency oscillating current can be 2 MHz to 2.5 GHz, with a more conventional frequency range of 2 MHz to 300 MHz or an unconventional frequency range of 500 MHz to 1 GHz. This creates a high-frequency oscillating electric field between the anode plate 121 and the cathode plate 122, enabling efficient heating without the need for direct or electrical connection between the comb-type electrode plate 12 and the susceptor 23 medium.

[0043] The controller 14 may be a microprocessor, which may be a programmable microprocessor; the controller 14 may include other electronic components; the controller 14 may be configured to regulate the supply of power to the dielectric heater; power may be supplied to the dielectric heater continuously after activation of the device, or may be supplied intermittently, such as on a puff-by-puff basis; power may be supplied to the dielectric heater in the form of current pulses.

[0044] The power source 13 may be a battery; alternatively, the power source 13 may be another form of charge storage device, such as a capacitor; the power source 13 may also require charging and may have a capacity that allows sufficient energy to be stored for one or more puffs; for example, the power source 13 may have sufficient capacity to allow continuous aerosol generation for a period of about six minutes or multiples of six minutes. The power source 13 may even have sufficient capacity to allow a predetermined number of puffs or discrete activations of the induction heater.

[0045] The dielectric heating aerosol generating structure with comb-type electrodes of the present invention has a simple structure and adopts dielectric heating instead of resistance heating to effectively heat the inside and outside of the entire aerosol generating substrate to generate aerosol. The comb-type electrodes can further guide the insertion and clamping of the aerosol generating part, thereby achieving high heating efficiency and promoting uniform heat distribution during the dielectric heating process.

[0046] Example 2, as Figures 1 to 4 The figure shown is only one of the embodiments of the present invention. On the basis of the first embodiment, in a dielectric heating aerosol generating structure with a comb-type electrode plate of the present invention, a wrapping layer is provided on the outside of the aerosol generating component 2. The wrapping layer can be a soft component to prevent friction damage between the outside of the aerosol generating component 2 and the comb-type electrode plate 12.

[0047] Furthermore, a switch 16 is provided on the side wall of the aerosol generating device 1 and is electrically connected to the controller 14. The induction heater can be triggered by pressing the switch 16 when the user takes a puff.

[0048] In this embodiment, the "susceptor" is essentially the susceptor medium, a substance that heats up when subjected to a varying electric field. This causes the electric dipoles in the susceptor medium 23 to rotate and vibrate vigorously along the direction of the electric field, resulting in heat generated by molecular friction. During use, the susceptor medium 23 is physically combined with the aerosol-generating substrate 22 within the working chamber 11 of the aerosol-generating device 1. In this manner, dielectric heating of the aerosol-generating substrate 22 occurs during use, forming an aerosol for inhalation.

[0049] Of course, the susceptor medium can be solid, hollow or porous; the susceptor medium can be any of solid, liquid, and solid-liquid mixture.

[0050] That is, the susceptor 23 medium can be formed from any material that can be dielectrically heated to a temperature sufficient to atomize the aerosol-generating substrate 22. Suitable materials for the susceptor 23 medium include water, alcohols, metal oxides, and various inorganic salts, including, for example, barium dioxide and ferrite. Alternatively, the susceptor medium can be water or an alcohol, which can be heated to a temperature of 250 degrees Celsius or above.

[0051] More specifically, the susceptors 23 are spherical particles with openings on their surfaces. When the medium of the susceptors 23 is solid particles, each solid particle has a particle size ranging from 10 microns to 200 microns (which can be further selected from 15 microns to about 100 microns, and optimally, 15 microns to 25 microns). Each particle can have 10 to 1000 micropores, each with a pore size ranging from 10 nanometers to 10 microns.

[0052] Also, suitable materials for the comb plate 12 include graphite, molybdenum, silicon carbide, stainless steel, niobium, and aluminum. Preferably, the comb plate 12 is a metal piece.

[0053] Finally, the housing of the aerosol generating device 1 can be made of a non-polar material so that no dielectric losses are generated within the housing. In other words, the housing can be made of a non-susceptor dielectric material (e.g., a non-polar non-susceptor material). Furthermore, the portion between the housing 1 and the comb plate 12 can also be made of a non-polar material.

[0054] Example 3, as Figures 3 to 6 The figure shown is only one embodiment of the present invention. Based on any of the above embodiments, in a dielectric heating aerosol generating structure with a comb-type electrode plate of the present invention, the outer wall contour line of the comb-type electrode plate 12 can be cylindrical or prismatic, because the working chamber 11 can also be cylindrical, elliptical or (multi-) prismatic, and the comb-type electrode plate 12 can be the same shape as the inner wall of the working chamber 11.

[0055] Here, the comb-type electrode plate 12 is formed by an array of multiple sheet-like electrode plates, arranged around at least a portion of the working chamber 11 and having a solid sheet-like structure of an anode plate 121 and a cathode plate 122. The anode plate 121 and the cathode plate 122 can have any suitable cross-section. For example, the anode plate 121 and the cathode plate 122 can each have a square, oval, rectangular, triangular, pentagonal, hexagonal, or similar cross-sectional shape.

[0056] Of course, the comb-type plates 12 are at least a pair (anode plate 121 and cathode plate 122), and can also be any number of pairs greater than two, but at least there is one anode plate 121 and one cathode plate 122. It should be noted that the number of cathodes and anodes does not have to be the same.

[0057] In one embodiment, the anode plate 121 and the cathode plate 122 are both part of a circular ring, and the extending directions of the anode plate 121 and the cathode plate 122 are the same as the circumferential direction of the working chamber 11. Figure 3 、 4 As shown;

[0058] In another case, the first main rod 123 and the second main rod 124 are arranged on the same side of the working chamber 11 (but the first main rod 123 and the second main rod 124 are not connected), and the anode plate 121 and the cathode plate 122 are respectively arranged in different directions to surround the two sides until they almost completely surround the working chamber 11. Figure 5 As shown;

[0059] In another case, the first main rod 123 and the second main rod 124 are respectively arranged on both sides of the working chamber 11, and the anode plates 121 extend from both ends of the first main rod 123, surround the working chamber 11 for more than half of the circumference and extend toward the second main rod 124; the cathode plates 122 extend from both ends of the second main rod 124, surround the working chamber 11 for more than half of the circumference and extend toward the first main rod 123; and the end of the cathode plate 122 close to the first main rod 123 extends between the two anode plates 121, such as Figure 6 As shown, the electric field intensity at the medium of the susceptor 23 can be made more uniform.

[0060] The dielectric heating aerosol generating structure with comb-type electrodes of the present invention has a simple structure and adopts dielectric heating instead of resistance heating to effectively heat the inside and outside of the entire aerosol generating substrate to generate aerosol. The comb-type electrodes can further guide the insertion and clamping of the aerosol generating part, thereby achieving high heating efficiency and promoting uniform heat distribution during the dielectric heating process.

[0061] The present invention is not limited to the above specific embodiments, and various modifications and variations are possible. Any modification, equivalent replacement, improvement, etc. made to the above embodiments based on the technical essence of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A dielectric heating aerosol generating structure with comb-type electrodes, characterized in that: The invention comprises an aerosol generating component (2) and an aerosol generating device (1), wherein the aerosol generating component (2) comprises an aerosol generating substrate (22), a filter tip (21), and a hollow acetate tube (24) arranged between the filter tip (21) and the aerosol generating substrate (22), wherein a sensor (23) is arranged in the aerosol generating substrate (22), and the aerosol generating device (1) is provided with a working cavity (11) for facilitating the insertion of the aerosol generating substrate (22), wherein a comb is arranged in the working cavity (11). The aerosol generating device (1) is further provided with a power supply (13) for supplying power to the comb-type electrode plate (12) and a controller (14) for controlling the power supply (13) to generate alternating current, so that when the aerosol generating substrate (22) is inserted into the working chamber (11), the controller (14) controls the power supply (13) to generate alternating current to supply power to the comb-type electrode plate (12), thereby generating an alternating electric field at the comb-type electrode plate (12) to dielectrically heat the susceptor (23); The comb-type electrode (12) includes a first main rod (123), a second main rod (124), an anode plate (121) connected to the first main rod (123), and a cathode plate (122) connected to the second main rod (124), wherein the anode plate (121) and the cathode plate (122) are respectively connected to the positive and negative poles of the power supply (13), and the anode plate (121) and the cathode plate (122) are arranged in parallel, and the anode plate (121) and the cathode plate (122) are both arranged on the inner wall of the working chamber (11), and an envelope space is formed between the anode plate (121) and the cathode plate (122) for facilitating the insertion of the aerosol generating substrate (22), the number of the anode plate (121) and the cathode plate (122) are both multiple, and there is at least one cathode plate (122) between two adjacent anode plates (121).

2. The dielectric heating aerosol generating structure with comb-type electrodes according to claim 1, characterized in that: A protrusion (111) is provided in the working chamber (11) and is used to extend between the anode plate (121) and the cathode plate (122).

3. The dielectric heating aerosol generating structure with comb-type electrodes according to claim 1, characterized in that: The diameter of the envelope space enclosed between the anode plate (121) and the cathode plate (122) near the open end of the working chamber (11) is not less than the diameter of the envelope space enclosed between the anode plate (121) and the cathode plate (122) near the bottom end of the working chamber (11).

4. The dielectric heating aerosol generating structure with comb-type electrodes according to claim 1, characterized in that: A through hole (15) for communicating with the working chamber (11) is provided on a side wall of the aerosol generating device (1).

5. The dielectric heating aerosol generating structure with comb-type electrodes according to claim 1, characterized in that: A wrapping layer is provided on the outer side of the aerosol generating component (2).

6. The dielectric heating aerosol generating structure with comb-type electrodes according to claim 1, characterized in that: A switch (16) electrically connected to the controller (14) is provided on a side wall of the aerosol generating device (1).

7. The dielectric heating aerosol generating structure with comb-type electrodes according to claim 1, characterized in that: The receptors (23) are a plurality of granular spherical pieces with openings on their surfaces.

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