KR102381044B1 - Microparticle generating device with induction heater - Google Patents

Abstract

The present invention relates to an induction heating type fine particle generator, comprising: an excitation coil; a susceptor that reacts with the excitation coil to generate induction heating by eddy current loss; a susceptor temperature acquisition unit for obtaining the temperature of the susceptor; It provides an induction heating type fine particle generator including a heat insulating part for shielding the heat between the excitation coil.

Description

Microparticle generating device with induction heating heater {MICROPARTICLE GENERATING DEVICE WITH INDUCTION HEATER}

The present invention relates to a device for generating fine particles having an induction heating heater.

1 is a view showing an induction heating device for heating an aerosol-forming substrate described in the prior art International Publication WO 2015/177255. The induction heating device 1 comprises a DC power supply comprising a device housing 10 , which may be formed of plastic, and a rechargeable battery 11a .

The induction heating device 1 includes a charging station for charging a rechargeable battery 11a or a docking port comprising a pin 12a for docking the induction heating device 1 to a charging device; 12) is included. In addition, the induction heating device 1 comprises power supply electronics 13 configured to operate at a desired frequency, for example a frequency of 5 MHz. The power supply electronics 13 is electrically connected to the rechargeable battery 11a via a suitable electrical connection 13a.

A tobacco-containing solid aerosol-forming substrate 20 comprising a susceptor 21 is received within a cavity 14 at the proximal end of the device housing 10 so that, during operation, an inductor L2 (a spirally wound cylinder) is carried out. inductor coil) is inductively coupled to the susceptor 21 of the tobacco-containing solid aerosol-forming substrate 20 of the smoking article 2 . The filter element 22 of the smoking article 2 is arranged outside the cavity 14 of the induction heating device 1 , so that, during operation, a consumer may draw an aerosol through the filter element 22 .

The induction heating device comprises an inductor arranged in thermal proximity to the aerosol-forming substrate, the aerosol-forming substrate comprising a susceptor. The alternating magnetic field of the inductor generates hysteresis loss and eddy current in the susceptor, causing the susceptor to heat the aerosol-forming substrate to a temperature at which it can release volatile components that can form an aerosol. do. Since the heating of the susceptor is carried out in a non-contact manner, it is not possible to measure the temperature of the aerosol-forming substrate directly. For that reason, it is also difficult to determine when a user puffs during a smoking practice.

International Publication WO 95/27411 International Publication WO 2015/177257 International Publication WO 2015/177255

An object of the present invention is to provide an induction heating type fine particle generator capable of easily controlling heat generation of a susceptor by directly measuring the temperature of the susceptor by including the susceptor as a part of the device.

Another object of the present invention is to provide an induction heating type fine particle generator capable of improving the efficiency of a magnetizing heating element generating heat by an excitation coil generating heat and transferring heat to the excitation coil.

The present invention provides an induction heating type fine particle generator including an excitation coil, a susceptor in which induction heating occurs due to eddy current loss by reacting with the excitation coil, and a heat insulating member for shielding heat between the susceptor and the excitation coil.

In addition, the present invention provides an induction heating type fine particle generator in which an excitation coil, a liquid storage space, and a heating member for vaporizing the liquid are provided as a susceptor.

Accordingly, the present invention provides an aerosol-forming substrate for a smoking article inserted into the cavity having a cavity into which a smoking article, which includes an aerosol-forming substrate on the inside and is wrapped with a wrapping paper on the outside, can be inserted. A device for generating fine particles of a grippable and portable size that forms an aerosol by heating a device, comprising: an excitation coil wound a plurality of times provided in the device; and an excitation coil provided inside the excitation coil to surround the excitation coil in the device , a metal susceptor made of a hollow cylindrical thin plate defining a cavity and reacted with an excitation coil and heated to a temperature of 400 ℃ or less by induction heating due to eddy current loss. The inner surface of the susceptor is inserted into the cavity a susceptor in contact with at least a portion of the outer surface of the wrapping paper of the smoking article and the induction heated susceptor heats an aerosol-forming substrate inside the wrapping paper by heat transfer to form an aerosol; a heat insulating portion provided in the device to prevent heat from the susceptor from being transferred to the excitation coil; a susceptor temperature acquisition unit for obtaining Having an induction heating heater comprising a control unit for inductively heating the susceptor to a desired temperature by supplying an alternating current of a resonant frequency or an alternating current of a frequency different from the resonant frequency according to the temperature of the sceptor to the excitation coil Provided is a device for generating fine particles of a grippable and portable size.

Here, it is preferred to further include a susceptor which can be inserted through the lower center of the smoking article to be inserted into the cavity and heated in direct contact with the aerosol-forming substrate in the smoking article.

In addition, the susceptor may preferably be made of a stainless steel sheet.

In addition, the heat insulating portion may preferably be an air layer provided between the susceptor and the excitation coil.

In addition, a structure supporting at least a part of at least one of the susceptor and the excitation coil is made of heat-resistant plastic, and is provided between the susceptor and the excitation coil to function as an insulating portion to prevent the heat of the susceptor from being transferred to the excitation coil. can be

In addition, the insulating plastic structure may be an insulating pipe supporting at least a portion of the susceptor outside the susceptor and having an excitation coil wound on the outer surface of the structure.

In addition, the heat insulating plastic structure can prevent the heat from the susceptor from leaking to the outside by supporting the susceptor by separately interposing a thermal insulator ring made of ceramic powder having low thermal conductivity between the susceptor and the susceptor.

In addition, a ferrite sheet is wrapped on the outer surface of the excitation coil to contact the excitation coil to prevent leakage of magnetic flux to the outside of the excitation coil.

In addition, a graphite sheet is wrapped on the outer surface of the excitation coil to radiate the heat of the excitation coil to the outside.

In addition, a laminate of a ferrite sheet and a graphite sheet is wrapped on the outer surface of the excitation coil to prevent leakage of magnetic flux to the outside of the excitation coil and to radiate heat of the excitation coil to the outside.

In addition, the airflow path communicating with the cavity may further include a pressure sensor for detecting the negative pressure caused by the user's puff for the smoking article inserted into the cavity.

In addition, the susceptor temperature acquisition unit is configured to measure changes in current and voltage for heating the susceptor according to the inductance or reactance values that change according to the change in temperature of the susceptor and the change in current and voltage from the current sensor and the voltage sensor. The temperature of the susceptor can be calculated according to

In addition, the susceptor temperature acquisition unit is a temperature sensor that comes in contact with the outer surface of the susceptor and senses a change in resistance according to a change in the temperature of the susceptor to measure the temperature, and a lead wire of the temperature sensor may be electrically connected to the control unit.

In addition, the temperature sensor and the lead wire of the temperature sensor may be wrapped by a heat-resistant shrink tube surrounding the outer surface of the susceptor to contact the outer surface of the susceptor.

Here, the smoking article may include a liquid cartridge therein.

In addition, the liquid cartridge preferably contains a liquid or gel composition containing glycerin VG.

Further, in the smoking article, a tobacco body may be further included upstream or downstream of the liquid cartridge.

In addition, it is preferable that the smoking article further includes a filter and a tube, and the filter, the tube, and the liquid cartridge are wrapped with a single wrapping paper to form.

In addition, the smoking article may include a tobacco body containing glycerin VG.

In addition, it is preferable that the smoking article further includes a filter and a tube, and is formed by wrapping the filter, the tube and the tobacco body with one wrapping paper.

The induction heating type fine particle generator provided by the present invention has the advantage that the heat generation of the susceptor can be easily controlled by directly measuring the temperature of the susceptor by including the susceptor as a part of the device.

The induction heating type fine particle generator provided by the present invention can heat a magnetizing heating element by a one-piece excitation coil wound in a cylindrical shape, and by providing an insulating pipe between the magnetizing heating element and the excitation coil, overheating of the excitation coil is prevented Thus, there is an advantage that the heating efficiency of the magnetizing heating element can be improved.

1 shows an induction heating device for heating an aerosol-forming substrate according to the prior art;
2 is a schematic exploded cross-sectional view showing a preferred example of a smoking article that can be used in the present invention;
3 is a schematic exploded cross-sectional view showing another preferred example of a smoking article that can be used in the present invention;
4 is an exploded perspective view of a device for generating fine particles according to a first embodiment of the present invention;
5 is an exploded cross-sectional view of a device for generating fine particles according to a first embodiment of the present invention;
6 is a perspective view of an insulating pipe that can be used in the device for generating fine particles according to the first embodiment of the present invention;
7 is a view showing a first inner part that can be used in the device for generating fine particles according to the first embodiment of the present invention;
8 is a view showing a heat stick that can be used in the device for generating fine particles according to the first embodiment of the present invention;
9 is a view showing a second inner part that can be used in the device for generating fine particles according to the first embodiment of the present invention;
10 is a cross-sectional view of a device for generating fine particles according to a first embodiment of the present invention;
11 is a cross-sectional view of a device for generating fine particles according to a second embodiment of the present invention;
12 is an exploded perspective view of a device for generating fine particles according to a second embodiment of the present invention;
13 is a cross-sectional view showing a part of a device for generating fine particles according to a third embodiment of the present invention;
14 is a cross-sectional view showing a part of a device for generating fine particles according to a fourth embodiment of the present invention;
15 is a view showing an embodiment of a circuit block diagram for induction heating in the device for generating fine particles according to the present invention;
16 is a view showing another embodiment of a circuit block diagram for induction heating in the device for generating fine particles according to the present invention.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. Effects and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

In the following examples, the singular expression includes the plural expression unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have means that the features or components described in the specification are present, and the possibility of adding one or more other features or components is not excluded in advance.

In the following examples, the terms 'upstream' and 'downstream' are terms used to indicate the relative positions of segments constituting the smoking article with respect to the direction in which the user draws air using the smoking article. A smoking article includes a downstream end (ie, an air intake portion) and an opposing upstream end (ie an air exit portion). When using the smoking article, the user may bite the downstream end of the smoking article. The downstream end is located downstream of the upstream end, while the term 'end' may also be described as 'end'.

In the drawings, the size of the components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

Hereinafter, a liquid cartridge that can be inserted into a smoking article that generates an aerosol by heating, which can be used in the device for generating microparticles according to a preferred embodiment of the present invention, and a heated smoking article including the liquid cartridge are attached. Although described with reference to one drawing, for convenience of description, each component of the heated smoking article will be described and a liquid cartridge included therein will be described. Here, the heated smoking article refers to a form in which an aerosol is generated from a smoking article by heating the smoking article by an electric resistance method or an induction heating method without combustion, and the user inhales and uses the aerosol. Such smoking articles include, within the smoking article, an aerosol-forming substrate and/or tobacco cut filler in an amount suitable for inhaling a number of inhalations comparable to that of one conventional smoking article cigarette, and comprising a predetermined amount of aerosol-forming substrate and/or tobacco cut filler. After this has occurred, it will no longer generate a significant amount of aerosol and will be discarded by the user after single use.

The heated smoking article 50 that can be used in the microparticle generating device of the present invention shown as an example in FIGS. 2 and 3 is an aerosol-forming substrate, and as will be described later, includes a liquid composition such as conventional tobacco cut filler and glycerin. A heated smoking article 50 according to a first preferred embodiment of the present invention comprises a tobacco cut filler 58 as an aerosol-forming substrate at its upstream end, a liquid composition cartridge 56 as another aerosol-forming substrate directly downstream thereof, and a direct downstream thereof. A tube 54 that provides an aerosol movement path downstream, and a filter 52 functioning as a mouthpiece have a stacked structure. The relative positions of the liquid composition cartridge 56 and the tobacco cut filler or tobacco body 58 may be reversed, and alternatively, the tobacco cut filler or tobacco body 58 may be omitted as shown in FIG. As with the heated smoking article 50 , the liquid composition cartridge 56 may be omitted.

The liquid cartridge 56 according to the present invention includes a liquid or gel composition; a liquid or gel moisture absorbent wetted with a liquid or gel composition; A liquid or gel-like moisture absorbent comprising a wrapping paper for wrapping the sides in a cylindrical shape having a length of 7 to 20 mm and a diameter of 5 to 8 mm, wherein the liquid or gel-like moisture absorbent is a liquid or gel-like moisture absorbent in a liquid cartridge It has a moisture absorption rate sufficient to absorb 70 to 120 mg of the liquid composition and hold it in the liquid cartridge. The cylinder shape having a length of 7 to 20 mm and a diameter of 5 to 8 mm is sized to meet the specifications of conventional cigarettes or heated smoking articles currently used, and the liquid cartridge 56 having these specifications is inserted into the heated smoking article. When it is wrapped with a separate wrapping paper 60, there is no difference from a normal cigarette or heated smoking article from a user's point of view.

The present invention is characterized in that 70 to 120 mg of the liquid or gel composition is absorbed into the liquid absorbent body of the liquid cartridge 56 having these specifications. Refers to the amount of the liquid composition in an amount capable of providing with the aerosol derived from the liquid composition when the user inhales the aerosol from the liquid composition. If the liquid or gel composition less than the above lower limit value (70 mg) is absorbed by the liquid absorbent, the aerosol derived from the liquid composition may be insufficient in the process of inhaling the aerosol derived from the tobacco cut filler provided in the heated smoking article. Therefore, the liquid composition absorbed into the liquid cartridge must be above the lower limit value (70 mg). When the liquid or gel composition exceeding the upper limit (120 mg) is absorbed by the liquid absorbent, it may be difficult for the liquid composition in the liquid cartridge having the above specifications to keep the liquid composition hygroscopic. It can flow out of the liquid cartridge. Therefore, the liquid or gel composition absorbed by the liquid cartridge 56 should be below the upper limit value (120 mg). A preferred range is 80 to 110 mg, and a more preferred range is 90 to 105 mg.

Another feature of the present invention is that the liquid absorbent material in the liquid cartridge 56 having the above specifications has a moisture absorption rate sufficient to maintain the liquid composition having the above range in the liquid cartridge. That is, the liquid composition is maintained with moisture absorbed by the liquid absorbent in the liquid cartridge, and does not flow out of the liquid cartridge. Here, the moisture absorption indicates that the absorbent material is wetted by the liquid composition, but does not flow out. As described below, the filter-tube-liquid cartridge-tobacco body is wrapped with a wrapping paper to form a heated smoking article. The liquid composition absorbed by the liquid absorbent in the cartridge is only absorbed and stored in the liquid absorbent, and does not flow out toward the cigarette body, tube or filter. For this purpose, the liquid composition is preferably absorbed into the liquid absorbent in an amount of 0.13 to 0.32 mg/mm ³ per unit volume of the liquid absorbent. The reason for this numerical limitation is similar to the reason for numerical limitation with respect to the amount of the liquid composition absorbed by the liquid absorbent of the present invention. That is, if it is less than the lower limit value (0.13 mg/mm ³ ), the amount of the liquid composition absorbed in the liquid absorbent is not sufficient, so that the user inhales the aerosol derived from the tobacco cut filler provided in the heated smoking article. Since the ^aerosol from When the liquid composition exceeding the upper limit value (0.32 mg/mm ³ ) is absorbed by the liquid absorbent, it may be difficult for the liquid composition in the liquid cartridge having the above specifications to keep the liquid composition hygroscopic. It can flow out of this liquid cartridge.

The liquid composition comprises glycerin VG and optionally glycerin PG, water and flavor, wherein the liquid composition comprises, by weight, 70-100% glycerin VG, 0-20% glycerin PG, 0-10% of water, and a flavoring agent added in an amount of 10% or less based on the total weight of the liquid composition thus obtained is further included. According to a preferred embodiment, the present invention uses a liquid composition consisting of 100% glycerin VG by weight. According to another preferred embodiment, the present invention uses a liquid composition consisting of 80% glycerin VG and 20% glycerin PG by weight. According to another preferred embodiment, the present invention uses, by weight, a liquid composition consisting of 75% glycerin VG, 20% glycerin PG and 5% water. According to another preferred embodiment, the present invention further comprises a flavoring agent added in an amount of 10% or less based on the total weight of the liquid composition thus obtained. For example, flavoring agents include licorice, sucrose, fructose syrup, double sweetener, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon. oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander or coffee and the like. In addition, the liquid composition may or may not contain nicotine.

According to a preferred embodiment, the liquid moisture absorbent according to the present invention is made into a cylindrical shape by crumpling or rolling a band of 2 to 3 mm in thickness made of melamine-based foamed resin, and according to another preferred embodiment, according to the present invention The liquid absorbent material is made by processing the melamine-based foamed resin into a cylindrical shape, and the liquid absorbent material made of the melamine-based foamed resin has a weight per unit volume of more preferably 0.01 to 0.013 mg/mm ³ . According to the experimental results conducted on a heated smoking article comprising a liquid cartridge having a liquid absorbent body wetted with 100 mg of the liquid composition, the liquid composition remained absorbed in the liquid absorbent body without a problem of flowing out during the experiment, Sufficient aerosols from the liquid composition were identified.

According to another preferred embodiment, the liquid absorbent material according to the present invention is made by crumpling, folding, or rolling pulp or a fabric containing pulp to make it into a cylindrical shape or to process it into a cylindrical shape, which is made of pulp or a fabric containing pulp. The resulting liquid absorbent material has a weight per unit volume of 0.25 to 0.4 mg/mm ³ more preferably. According to the experimental results conducted on a heated smoking article comprising a liquid cartridge having a liquid absorbent body wetted with 100 mg of the liquid composition, the liquid composition remained absorbed in the liquid absorbent body without a problem of flowing out during the experiment, Sufficient aerosols from the liquid composition were identified.

According to another preferred embodiment, the liquid absorbent material according to the present invention is made by crumpling or rolling a cotton woven fabric or a non-woven fabric to make a cylinder shape or processing it into a cylinder shape, and a liquid product made from a cotton woven fabric or non-woven fabric The absorbent material more preferably has a weight per unit volume of 0.2 to 0.35 mg/mm ³ . According to the experimental results conducted on a heated smoking article comprising a liquid cartridge having a liquid absorbent body wetted with 100 mg of the liquid composition, the liquid composition remained absorbed in the liquid absorbent body without a problem of flowing out during the experiment, Sufficient aerosols from the liquid composition were identified.

According to another preferred embodiment, the liquid moisture absorbent according to the present invention is made by crumpling or rolling a woven or non-woven fabric of bamboo fibers to form a cylinder or processed into a cylindrical shape. The resulting liquid absorbent material has a weight per unit volume of more preferably 0.15 to 0.25 mg/mm ³ . According to the experimental results conducted on a heated smoking article comprising a liquid cartridge having a liquid absorbent body wetted with 100 mg of the liquid composition, the liquid composition remained absorbed in the liquid absorbent body without a problem of flowing out during the experiment, Sufficient aerosols from the liquid composition were identified.

The smoking article applicable to the microparticle generating device according to the present invention is also a gel-like aerosol-forming substrate cartridge, which exists in a gel or solid state at room temperature and vaporizes into an aerosol in a temperature range of 150 to 300 ° C., Glycerin VG, water, gelatin It comprises, and optionally, a gel-like aerosol-forming substrate comprising glycerin PG; a gel receptor in which the gel-like aerosol-forming substrate is accommodated; It may include a wrapping paper, wrapping the side of the gel receptor in a cylindrical shape having a length of 7 to 20 mm and a diameter of 5 to 8 mm. A cylindrical shape having a length of 7 to 20 mm and a diameter of 5 to 8 mm is sized to meet the specifications of conventional cigarettes or heated smoking articles currently used. and wrapped with a separate wrapping paper, there is no difference from a normal cigarette or heated smoking article from the user's point of view.

Here, the gel-like aerosol-forming substrate comprises, by weight, a liquid composition consisting of 80 to 100% of glycerin VG and 0 to 20% of glycerin PG, and 60 to 80% of the liquid composition and 20 to 40% of the volume of water It contains gelatin in a weight of 1 to 6 g based on 100 ml of the mixture mixed in a ratio, and may optionally include a flavoring agent added in an amount of 10% or less based on the total weight of the liquid composition. Here, preferably, the liquid composition is contained in the gel receptor in an amount of 70 to 120 mg. Alternatively, the liquid composition may be included in the gel receptor in an amount of 0.13 to 0.32 mg/mm ³ per unit volume of the gel receptor.

According to a preferred embodiment, the wrapping paper 60 is formed by attaching an aluminum foil to the paper, and is wrapped in a cylindrical shape so that the aluminum foil is in contact with the liquid absorbent body. As can be seen from the configuration of the liquid cartridge shown in FIGS. 2 to 3 , the liquid absorbent material is wrapped by a wrapping paper. In this case, the wrapping paper may be provided in a form in which an aluminum foil is attached to the paper, and the aluminum foil It is preferable to wrap in a cylindrical shape so as to contact this liquid moisture absorbent. As a result, a wrapping paper (formed by attaching an aluminum foil to the paper) is preferably required to wrap the liquid cartridge 56, and filter 52, tube 54, liquid cartridge to form smoking article 50. The wrapping paper 60 shown in Figs. 2 and 3 for wrapping 56 and/or tobacco bodies 58 (the order of both may be reversed and one of them may be omitted as described above) arranged in series ) is required (the type of wrapping paper will be described later).

A heated smoking article 50 that can be used in the microparticle generating device according to the present invention may include a tube 54 that provides a passageway for the aerosol, as shown in FIGS. 2 and 3 , the tube 54 . PLA can also be inserted into the aerosol to lower the temperature of the aerosol to prevent burns when the user inhales the aerosol.

As shown in FIGS. 2 and 3 , the filter 52 serving as a mouthpiece serves to pass the aerosol and prevent the inflow of liquid. The filter may be manufactured from pulp, and may be manufactured in the form of a cylinder or tube. On the other hand, the filter may improve the user's satisfaction by including a flavoring component. Flavoring ingredients include, for example, licorice, sucrose, fructose syrup, sweetener, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon. oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander or coffee and the like.

In some cases, the liquid composition contains nicotine without the tobacco body 58 made of tobacco cut filler, a tube and a filter are sequentially stacked on a liquid cartridge, and the heated smoking article 50 may be manufactured by wrapping with a wrapping paper.

The heated smoking article 50 is usually wrapped with a plurality of layers of wrapping paper 60, the first wrapping paper surrounding the portion where the liquid cartridge is located, and the liquid cartridge and the tobacco body made of tobacco cut filler on the downstream or upstream of the first wrapping paper. Multiple layers of wrapping paper may be wrapped, such as a second wrapping paper, a third wrapping paper over which the tube is wrapped together, and a fourth wrapping paper over which all parts of the heated smoking article are wrapped. A heated smoking article can be obtained by going through several stages of lapping in this way. In some cases, the process of forming the liquid cartridge may be performed separately or may be performed through a continuous line.

Alternatively, in order to shorten the manufacturing time and reduce manufacturing cost, different materials or different thicknesses of packaging materials are padded inside the outermost wrapping paper that wraps all parts of the heated smoking article and wrapped at once. It is also possible

As shown in FIGS. 2 and 3 , in the liquid cartridge applicable to the device for generating fine particles according to an embodiment of the present invention, a liquid absorbent in which the liquid composition is absorbed is wrapped with a wrapping paper serving as a housing. In addition, at the downstream end of the liquid cartridge, a tube and a filter are installed so that they are sequentially stacked. The filter and tube are wrapped by wrapping paper together with the liquid cartridge. The liquid composition in the liquid cartridge is held in the liquid cartridge with moisture absorbed by the liquid absorbent material, does not flow out of the liquid cartridge, and is vaporized by heating to generate an aerosol. The wrapping paper is preferably made of a material that is not deformed by contact with high heat and liquid or does not generate components harmful to the human body. Alternatively, the wrapping paper may be made of a metal thin film or a metal foil, and as described above, may be in the form of a paper-made wrapping paper with a metal thin film or a thin metal plate being padded.

The filter 52 provided on the downstream side of the liquid cartridge 56 may have a hollow part to form an airflow, but a filter having no hollow part may be used. The filter may consist of at least one segment and may include, for example, at least one of a tube filter, a cooling structure and a recess filter. The tube filter has a shape including a hollow inside. The tube filter and recess filter can be made of cellulose acetate, and the tube serving as the cooling structure can be made of pure polylactic acid, or a combination of polylactic acid with other degradable polymers. More specifically, the filter may be made of a material such as acetate, paper, PP, and the like, and the filter wrapper surrounding the filter may be classified into plain paper, porous paper, perforated paper, NWA (Non Wrapped Acetate), and the like. In addition, the filter type can be classified into a mono filter consisting of one segment and a complex (double, triple, etc.) filter consisting of several segments. The filter may be made of acetate tow, plasticizer, activated carbon, X-DNA, or wrapping paper. Acetate tow refers to the aggregate of continuous filaments of cellulose acetate, and plays a decisive role in determining the most important characteristic of the filter, the suction resistance. The properties of acetate tow are determined by its denia. The plasticizer makes the cellulose acetate fibers soft and pliable, forming bonds at the point of contact between the fibers and making the fiber bundles stiffer. Triacetin is used as a plasticizer for cigarette filters. Activated carbon, which is one of the adsorbents, is a material containing carbon as a main component, and can be classified according to the size and properties of particles. Raw materials used for activated carbon include wood, sawdust, and fruit husks (coconut shells, bamboo, peach seeds) as vegetable raw materials. X-DNA refers to functional particles extracted from seaweed and then concentrated and processed. Compared to activated carbon, which is mainly used in cigarette filters, it does not affect the taste of cigarettes and is excellent in removing various carcinogens.

The function of the wrapping paper 60 maintains the shape of the filter floc when the filter is manufactured. When the wrapping paper is manufactured, physical properties such as porosity, tensile strength, elongation, thickness, and adhesive properties must be satisfied. For example, the length of the liquid cartridge 56 is 14.0mm, the length of the filter 52 or tube 54 is 2.5mm, respectively, the length of the tobacco body 58 containing tobacco cut filler may be 9.0mm. These preferred values may vary as the liquid cartridge 56 or the cigarette body 58 is omitted as described above.

4 is an exploded perspective view of the device for generating fine particles according to the first embodiment of the present invention, and FIG. 3 is an exploded cross-sectional view of the device for generating fine particles according to the first embodiment of the present invention.

The device for generating fine particles according to the first embodiment of the present invention includes an aerosol-forming substrate therein, and a smoking article 50 wrapped with a wrapping paper 60 on the outside is inserted It is a grippable, portable sized microparticle generating device that has a cavity ( 100 ) capable of becoming and heats the aerosol-forming substrate of a smoking article ( 50 ) inserted into the cavity to form an aerosol. In such a fine particle generator, electrical components are disposed in a lower case and an upper case, not shown. The rechargeable battery 210 functioning as a DC power source in the present invention and the control board 220 constituting the control unit in the present invention are disposed at the lower part in the space defined by the lower case and the upper case, and actual heat generation is disposed on the upper part The electrical equipment used for the A cover case is coupled to the upper case to surround the upper case. The present invention is directed to a device for generating fine particles of a grippable and portable size. The rechargeable battery 210 can be recharged through a charging means such as a USB cable, for example, and the user inserts the smoking article 50 into the cavity 100 of the microparticle generating device in a charged state and induces it as described below. Heating heats the susceptor, making it possible to generate and inhale an aerosol within the smoking article 50 . In this case, the battery 210 functions as a DC power source, and is supplied to the excitation coil 300 as an AC current through the control unit 220 as will be described later. The device for generating fine particles according to the present invention has a size that can be gripped and can be conveniently carried and used by a user.

Electrical components used for heating are components for induction heating, and an excitation coil 300 wound in a cylindrical shape a number of times, and a susceptor in which induction heating occurs due to eddy current loss by reacting with the excitation coil 300; magnetizing heating element ) (400, 800) are provided. wherein the susceptor is a hollow, cylindrically shaped thin plate defining a cavity 100 into which a smoking article 50 can be inserted, provided inside the excitation coil 300 to enclose the excitation coil 300 within the device. It is preferable that the heat pipe 400 made of a metal material is made and reacts with the excitation coil 300 and is heated to a temperature of 400° C. or less by induction heating due to eddy current loss. Depending on the magnitude of the alternating current applied to the excitation coil 300, the temperature of the susceptor may be heated to a temperature of 1000 °C or higher, but the present invention is characterized in that the susceptor is heated to a temperature of 400 °C or lower. The susceptor is heated to a temperature of 100 to 400° C. depending on the magnitude of the alternating current applied to the excitation coil 300 , and heats the aerosol-forming substrate provided inside the smoking article 50 inserted into the cavity 100 to generate an aerosol causes According to a preferred example, the target temperature may be in the range of 200 to 350 °C, and according to a more preferred example, the target temperature may be in the range of 250 to 320 °C (for example, 280 °C is set as the target may be). In some cases, the target temperature may be in the range of 150 to 250 ℃ (for example, 180 ℃ may be set as the target temperature), which is whether the target to generate an aerosol is liquid or gel glycerin, tobacco, or glycerin It can be different depending on the hygroscopic cigarette change. In any case, since the aerosol generated in the smoking article 50 is inhaled into the user's mouth through the tube 54 and the filter 52, even considering cooling in the inhalation process, if the temperature of the generated aerosol is excessively high, the user The target temperature of the susceptor should be determined in advance in consideration of this, because there is a risk of discomfort or burns, and excessive aerosols can be generated, so multiple puffs can be difficult. However, for the above reasons, the upper limit of the target temperature of the susceptor is limited as described above.

According to a preferred embodiment, the temperature at which the generated aerosol comes out through the tube 54 and the filter 52 can be measured as a mouth end temperature. In order not to cause discomfort to the user, the temperature of the aerosol is 50 ° C. The temperature should be less than or equal to 45°C. A preferred aerosol mouth end temperature has a temperature range of 25 to 45 °C, a more preferred aerosol mouth end temperature has a temperature range of 30 to 40 °C.

One or a plurality of susceptors may be provided, and in the first embodiment of the present invention, the heat pipe 400 and the heat stick 800 provided in the case serve as susceptors. The heat pipe 400 has an outer surface of the wrapping paper 60 of the smoking article 50 in which the inner surface of the heat pipe 400 which is a susceptor is inserted into the cavity 100 from the outside of the smoking article 50 having a generally cylindrical shape. A susceptor that is in contact with at least a portion of the induction heating element heats the aerosol-forming substrate inside the wrapping paper 60 by heat transfer, and the heat stick 800 is inserted into the smoking article 50 to insert the inside of the smoking article 50. In the form of heating the aerosol-forming substrate. At this time, both the heat pipe 400 and the heat stick 800 are manufactured in a thin shape, and the heat stick 800 is a thin hollow rod and is closed with an upper end forming a tip.

Only the heat pipe 400 provided in the first embodiment may be provided alone, or only the heat stick 800 may be provided alone. When only the heat pipe 400 is provided alone (corresponding to the second embodiment to be described later), as described above, the heat pipe 400 is a heat pipe that is a susceptor outside the smoking article 50 having a generally cylindrical shape. The inner surface of 400 is in contact with at least a part of the outer surface of the wrapping paper 60 of the smoking article 50 inserted into the cavity 100, and the induction heated susceptor is aerosol inside the wrapping paper 60 by heat transfer. Since the forming substrate is heated, the induction heated heat pipe 400 without direct contact with the tobacco body 58 or the liquid cartridge 56 inside the smoking article 50 is transferred to the inside of the smoking article 50 by heat transfer. Smoking article 50 after sufficient aerosol is generated from the aerosol-forming substrate by heating an aerosol-forming substrate such as tobacco cut filler or glycerin in the tobacco body 58 or an aerosol-forming substrate such as glycerin in the liquid cartridge 56 to generate an aerosol. ) is removed from the cavity 100 , it is less likely that residues from the smoking article 50 will remain inside the cavity 100 .

The cavity 100 formed by the heat pipe 400 is a space into which the smoking article 50 can be inserted, and after the smoking article 50 is inserted into the cavity 100 , it is heated by an induction heated susceptor and , the spent smoking article 50 is removed from the cavity 100 and discarded after a defined amount of the aerosol has been formed, otherwise if the user no longer wishes to inhale the aerosol from the smoking article 50 . The size of the cavity 100 should be large enough to allow the smoking article 50 to be inserted, but if the distance from the inner surface of the heat pipe 400 forming the cavity 100 to the outer surface of the smoking article 50 is large, the induced Heat transfer from the heated heat pipe 400 to the aerosol-forming substrate inside the smoking article 50 may not be sufficient. Therefore, in the present invention, it is preferable that the inner surface of the heat pipe 400 is in contact with at least a portion of the outer surface of the wrapping paper 60 of the smoking article 50 inserted into the cavity 100 .

The present invention is characterized in that a temperature sensor 420 is provided on the outer surface of the heat pipe 400 which functions as a susceptor and forms a cavity 100 in the center. The temperature sensor 420 functions as a susceptor temperature acquisition unit for obtaining the temperature of the susceptor, and is in contact with the outer surface of the heat pipe 400, which is a susceptor, and detects a change in resistance according to the temperature change of the susceptor to measure the temperature. It is a temperature sensor 420 that measures, and the lead wire 440 of the temperature sensor is electrically connected to the control board 220 functioning as a control unit. The temperature sensor 420 and the lead wire 440 of the temperature sensor are wrapped by a heat-resistant shrink tube surrounding the outer surface of the heat pipe 400 which is a susceptor, and come into contact with the outer surface of the heat pipe 400 which is a susceptor. In this way, since the temperature sensor 420 and the temperature sensor lead wire 440 are wrapped around the heat pipe 400 using a shrink tube, a firm surface contact between the temperature sensor 420 and the heat pipe 400 can be ensured. , there is no difficulty for the temperature sensor 420 to read the change in resistance according to the temperature change of the heat pipe 400 . Since the present invention is characterized in that the susceptor is heated to a temperature of 400 ° C. or less by induction heating, the temperature sensor 420 and the lead wire 440 of the temperature sensor have sufficient elasticity without deterioration of the heat-resistant shrink tube in this temperature range. ) can be fixed in place. Since the temperature sensor 420 is fixed to the outer surface of the heat pipe 400 in this way, it is possible to increase the efficiency of the work process while ensuring contact with the susceptor surface of the temperature sensor 420, and separately the temperature sensor 420 It has the advantage that it does not require tools or processing to install it. In the prior art described above, since the susceptor is provided inside the smoking article, the temperature of the susceptor could not be directly measured, but in the present invention, the temperature of the susceptor is directly measured by the temperature sensor 420 or as described below. Since the temperature of the susceptor can be calculated by measuring the current and voltage applied to the excitation coil, there is an advantage in that the alternating current supplied to the excitation coil can be controlled according to the temperature of the susceptor during induction heating of the susceptor.

The exciting coil 300 is a coil winding body wound multiple times, and supplies an alternating current to the susceptor to cause induction heating due to eddy current loss in the susceptor. There is a problem in that the resistance of the excitation coil 300 itself increases. Therefore, as will be described later, it is provided between the susceptor and the excitation coil to prevent the heat of the susceptor from being transferred to the excitation coil 300 . On the other hand, the heat transferred from the susceptor to the excitation coil 300 is It is necessary to lower the temperature of the excitation coil 300 by radiating heat to the outside. For this, it is preferable that a graphite sheet 360 is wrapped on the outer surface of the excitation coil 300 . The graphite sheet 360 functions to radiate the heat of the excitation coil 300 to the outside. In addition, when wrapping a ferrite sheet 340 on the outer surface of the excitation coil 300 , it is possible to block magnetic leakage to the outside of the excitation coil 300 , so that the excitation coil 300 . The result is that the magnetic field lines of Roboutu are concentrated to the susceptor inside the excitation coil 300 . As described above, the above effect can be achieved by wrapping at least one of a graphite sheet or a ferrite sheet on the outer surface of the excitation coil 300, and more preferably, the graphite sheet 360 and the ferrite sheet 340 are shown in the drawings. It is also possible to wrap the laminated sheet to the outside of the excitation coil 300 by laminating together.

An insulating portion is provided between the excitation coil 300 and the susceptor, particularly the heat pipe 400 , to prevent the heat of the induction heated susceptor from being transferred to the excitation coil 300 . As a preferred example, the insulating unit is provided separately in an air layer 530 (see FIGS. 13 and 14 ), or may be in the form of a heat insulating pipe 500 as shown in FIGS. 4 to 6 . 6 is a perspective view of a heat insulating pipe provided in the induction heating type fine particle generator according to the first embodiment of the present invention. The outer periphery of the heat insulating pipe 500 has a smooth shape and serves to support the winding of the excitation coil 300 , and a groove 510 formed in the axial direction on the inner periphery of the heat insulating pipe 500 is formed along the entire area in the circumferential direction. It is disposed over to form an air layer for heat insulation, and minimizes the area in which the heat pipe 400 is joined to the inner surface of the heat insulation pipe 500 . The internal shape of the heat insulating pipe 500 provided in the first embodiment is a shape in which an axial groove 510 is formed, but the groove is a wedge shape, a spiral shape, a ring shape, a mesh shape, and the like, which minimizes the contact surface. If it is, it is free of any shape. Minimizing the contact surface will be a structure that minimizes conduction heat transfer from the induction heated susceptor to the adiabatic pipe.

By disposing the heat insulation pipe 500 between the exciting coil 300 and the susceptor, it is possible to prevent the induced heat generated in the susceptor from being transmitted to the exciting coil 300 . When the high heat generated from the susceptor is transferred to the exciting coil 300, the resistance of the exciting coil 300 itself increases, as a result, the strength of the magnetic field induced by the exciting coil 300 is weakened, so the amount of induced heat generated in the susceptor this lowers Accordingly, by arranging a heat insulating part such as the heat insulating pipe 500 or an air layer between the excitation coil 300 and the susceptor, the amount of heat generated in the susceptor can be improved. In addition, since the energy loss is small, there is an advantage that the heat generation temperature of the susceptor can be easily controlled.

The heat pipe 400 and the heat stick 800 are formed of a metal material that can be magnetized by the excitation coil 300 . A preferred example of the present invention is stainless steel. Stainless steel can be obtained at a relatively low price and has excellent workability, so it can be easily processed into a thin plate cylinder type, and it functions as a susceptor and has excellent magnetization properties to generate heat. A first inner part 600 for supporting the lower end of the heat pipe 400 and fixing the heat stick 800 is provided, and the second inner part 700 is coupled to the lower portion of the first inner part 500 . to fix the heat stick 800 together with the first inner part 600 . The first inner part 600 and the second inner part 700 are made of heat-resistant plastic, and can withstand heat from the heat pipe 500 and the heat stick 800 . For example, engineering plastics such as PEEK may form structures such as the first inner part 600 and the second inner part 700 by injection molding.

The heat insulating effect of the heat insulating pipe 500 can be increased by attaching a heat insulating film using a filler having a heat insulating shielding function to the outer wall of the heat insulating pipe 500 applied for heat insulation. As the insulating filler, ceramic powder such as zirconia having low thermal conductivity, porous silica gel, porous alumina, ceramic powder such as airgel may be used.

Alternatively, the insulating effect of the insulator can be increased by attaching an insulating paint using a filler having a thermal insulating shielding function to the outer wall of the insulating pipe 500 applied for thermal insulation. As the insulating filler, ceramic powder such as zirconia having low thermal conductivity, porous silica gel, porous alumina, or ceramic powder such as airgel may be used.

As another example, the insulated pipe may be replaced with a hollow tube instead of having a groove therein. Efficiency can be achieved by limiting the heat generated in the susceptor to the aerosol generating site by using a hollow tube. The interior of the hollow tube is most preferably a form having an air layer, but may be filled with a porous insulating material such as aerosol powder or zeolite. In addition, even with a hollow structure in an unfilled state, the insulation effect due to the air layer can be sufficiently obtained.

7 is a view showing a first inner part included in the induction heating type fine particle generator according to the first embodiment of the present invention. 4, 5, and 7 , the first inner part 600 has a disk-shaped groove 610 on its upper portion, and a bottom portion of the heat pipe 400 is inserted into the circular groove 610 to support it. do. At this time, in order to insulate the heat pipe 400 , a plurality of ribs 612 are formed in the disk-shaped groove 610 , and are disposed at a predetermined distance from the bottom surface of the circular groove 610 . That is, an air layer is formed between the bottom surface of the circular groove 610 and the bottom surface of the heat pipe 400 . In addition, by having a through hole 614 penetrating the side surface of the circular groove 610, the air introduced through an airflow path, which will be described later, enters and exits. This airflow path forms an airflow path communicating with the cavity 100 defined by the heat pipe 400 , the pressure sensing the negative pressure caused by the user's puff against the smoking article 50 inserted into the cavity 100 . A sensor (not shown) is provided at an appropriate location on the airflow path. The pressure sensor detects the negative pressure caused by the user's puff on the smoking article 50 inserted into the cavity 100, and preferably counts the number of puffs in the control unit to be described later, or more preferably is used to calculate the cumulative puff amount can be In this embodiment as well as in other embodiments, the pressure sensor is provided at an appropriate position on the airflow path communicating with the cavity 100 to sense the negative pressure caused by the user's puff for the smoking article 50 inserted into the cavity 100. can be used

In addition, a hole 616 is formed in the center of the bottom surface of the circular groove 610 , through which the upper portion of the heat stick 800 passes, and a portion of the upper portion of the heat stick 800 is located in the heat pipe 400 . In addition, a guide part 620 for guiding the lead wire of the excitation coil 300 is provided on an outer side of the first inner part 600 . The lead wire 320 of the excitation coil 300 may be drawn out through the guide 620 to form an electrical contact with the control board 220 . In addition, a fixing part 630 for fixing the first inner part 600 to a bracket for fixing the battery 210 and the control board 220 may be provided. In the first embodiment of the present invention, the first inner part 600 and the bracket are screwed together, and accordingly, the fixing part 630 is a screw hole. On the other hand, a portion of the heat stick 800 is positioned under the first inner part 600 , and a receiving part 640 for inserting and fixing the second inner part 700 for fixing the heat stick 800 . (refer to FIG. 5) is provided. Optionally, if the heat stick 800 is not provided, the second inner part 700 is not required. Alternatively, the space of the accommodating part 640 for accommodating the central hole 616 and the second inner part 700 may be applied as a space for an air flow path and a space for installing a pressure sensor. Of course, it goes without saying that in either case, the pressure sensor must be installed on an airflow path communicating with the smoking article 50 inserted into the cavity 100 .

8 is a view showing a heat stick provided in the induction heating type fine particle generator according to the first embodiment of the present invention. 4, 5 and 8 , the heat stick 800 includes an upper rod 810 positioned in the heat pipe 400 through the first inner part 600 and the heat stick as described above. (800) A flange portion 820, a flange portion 820 that penetrates the first inner part 600 only by a predetermined length to determine a position to be located in the heat pipe 400, and helps fix the heat stick 800 ) includes a lower rod 830 protruding to the lower portion. At this time, the heat stick 800 is a hollow rod, and the upper end of the upper rod 810 is blocked with a tip. An air layer is formed in the center of the heat stick 800 to give an insulating effect, and has an advantage that induction heating can be easily performed compared to a non-hollow type. As shown in the drawing, the heat stick 800 may be formed in a rod type, or if it is assumed that the rod shown in FIG. 8 is filled, it may be made of a plate-like material having the same shape as the central cross-section thereof. Alternatively, these plate-like materials may be manufactured in a shape that crosses in a cross shape. In either case, the heat stick 800 is made of only a magnetizable metal material, a preferred example, by processing a thin stainless steel plate. Since it is not installed, it is sufficient to make it into a desired shape and fix it to a structure for fixing it. As described in other sections, the heat stick 800 is inserted into the smoking article 50 and directly in contact with the aerosol-forming substrate inside the smoking article 50, and can be heated by induction heat. There is this. That is, direct contact with the inside of the smoking article enables heat transfer. However, when the used smoking article 50 is removed from the cavity 100, the risk of residues of the aerosol-forming substrate inside the smoking article 50 remaining in the cavity 100 increases, and the need for cleaning arises. there may be As a result, if the disadvantages can be minimized while maintaining the advantages, the need to use the heat stick 800 is increased. It will be in keeping the debris from falling into the cavity 100 . If the heat stick 800 is provided in a shape that enables such insertion and removal, it will be possible to minimize the disadvantages while having the above-described advantages.

9 is a view showing a second inner part provided in the induction heating type fine particle generator according to the first embodiment of the present invention. 4 to 9 , the second inner part 700 is inserted and fixed in the receiving part 640 (refer to FIG. 5 ) formed under the first inner part 600 , and The flange portion 820 and the lower rod 830 engage and serve to fix the heat stick 800 . The upper portion 710 of the second inner part 700 has a shape in which the flange portion 820 of the heat stick 800 engages. In addition, an insertion groove 720 into which the lower rod 830 of the heat stick 800 is inserted is provided in the center of the upper portion 710 . In addition, a fastening part 730 for fastening with the first inner part 600 is provided at the lower part. In the first embodiment, since the first inner part 600 and the second inner part 700 are screwed together, the fastening part 730 is a fastening boss having a screw groove.

10 is a cross-sectional view of an induction heating type fine particle generator according to a first embodiment of the present invention. In the induction heating type fine particle generating device according to the first embodiment of the present invention, external air introduced through a hole formed in a cover case (not shown) passes through an airflow hole 140 formed in the upper case, and a first inner part ( Fine particles or particles introduced into the heat pipe 400 through the through hole 614 (refer to FIG. 7 ) of the 600) and the airflow path space 120 and generated while the smoking article 50 inserted into the heat pipe 400 is heated. The aerosol may be inhaled by the user.

Meanwhile, in the first embodiment, both the heat pipe 400 and the heat stick 800 were used as susceptors, but in another embodiment, by changing the heat pipe 400 to a non-magnetizable material, it does not generate heat and only smokes. It is also possible to use only the pipe for accommodating the article 50 and use only the heat stick 800 as a susceptor.

11 is a cross-sectional view of an induction heating type fine particle generator according to a second embodiment of the present invention, and FIG. 12 is an exploded perspective view of the induction heating type fine particle generator according to a second embodiment of the present invention. The induction heating type fine particle generator according to the second embodiment of the present invention does not include a heat stick as a susceptor, but only includes a heat pipe 400 into which the smoking article 50 is inserted. Accordingly, the inner part also includes only the first inner part 600 for supporting the heat pipe 400 , and unlike the first embodiment, the second inner part is not included. The first inner part 600a provided in the second embodiment does not have a through hole in the bottom surface because the heat stick does not need to pass therethrough. As in the rest of the first embodiment, a plurality of ribs are formed to float the lower end of the heat pipe 400 , and a through hole through which air can be introduced is provided on the side surface.

The components of the smoking article 50 are exaggerated so that they can be seen, wherein the aerosol-forming substrates 56 , 58 of the smoking article 50 into the interior cavity 100 of the heat pipe 400 functioning as a susceptor. It should be sized to fit in. Accordingly, the heating of the aerosol-forming substrates 56 , 58 is made in accordance with the heating of the heat pipe to generate an aerosol inside the smoking article 50 .

As described above, the second embodiment includes all of the configurations of the first embodiment except for the difference that the heat stick is not included. In particular, the negative pressure inhaled by the user through the smoking article 50 through the airflow path space 120 may be sensed by a pressure sensor installed at an appropriate position.

13 is a cross-sectional view showing a third embodiment of the induction heating type fine particle generator according to the present invention, and FIG. 14 is a cross-sectional view showing a fourth embodiment of the induction heating type fine particle generator according to the present invention. In the third and fourth embodiments, the heat pipe 400 functioning as a susceptor is not located in the heat insulating pipe 500 unlike the first and second embodiments, but the heat insulating pipe 520 (FIG. 14). Refer to) and an example in which the air layer 530 is clearly provided between the heat pipe 400 functioning as a susceptor is shown. The air layer 530 functions as an insulator to block heat from the heat pipe 400 to the excitation coil 300 .

The lower end of the heat pipe 400 is supported by the first inner part as in the first and second embodiments, and since the shape is slightly different, the reference number is changed to describe the first inner part support part 650 . . However, like the first and second embodiments, the lower end of the heat pipe 400 is supported.

The upper end of the heat pipe 400 is supported by a heat insulating structure 520 that may correspond to the heat insulating pipe of the first embodiment and the second embodiment. The heat insulating structure 520 supports the upper end of the heat pipe 400 and provides a space on the outer periphery of the heat pipe 400 in which the excitation coil 300 can be wound. As described above, heat transferred from the heat pipe 400 serving as the susceptor to the excitation coil 300 may be minimized by the air layer 530 and the heat insulating structure 520 .

In addition, the above-described shrink tube 460 is provided on the outer surface of the heat pipe 400 to fix the temperature sensor 420 and the lead wire 440 of the temperature sensor to contact the heat pipe 400, and the excitation coil On the outer surface of the graphite sheet 360 and the ferrite sheet 340, a laminated sheet was wrapped around the excitation coil 300 outside.

In addition, as shown in the fourth embodiment, the first inner part support 650 and the insulating structure 520, which are both insulating plastic structures, are made of ceramic powder with low thermal conductivity at positions supporting the heat pipe 400 which is a susceptor. By supporting the heat pipe 400 by separately interposing the made thermal insulator rings 560 and 562, it is possible to prevent heat from being transmitted from the heat pipe to the outside through the structure.

15 is a view showing an embodiment of a circuit block diagram for induction heating in the induction heating type fine particle generator according to the present invention.

15 , the induction heating type fine particle generator according to the present invention heats the susceptor 2007 by using induction heating. Specifically, the MCU 2001 controls the power boost circuit 2002 to control the battery ( 2003) is amplified by the power boost circuit 2002 for induction heating and supplies the DC current to the induction heater control logic 2004 . The power boosting circuit 2002 is applied to stably supply power to induction heating the susceptor 2007 when the battery 2003 is used as a power source for induction heating. The MCU 2001 also inputs a PWM signal to the induction heater control logic 2004 . The induction heater control logic 2004 converts the DC current supplied from the power boost circuit 2002 into AC current while performing a switching operation according to the PWM signal input from the MCU 2001 and supplies it to the coil 2006 to supply the susceptor 2007 ) to induction heating.

In the MCU 2001, the PWM signal is input to the induction heater control logic 2004 to transmit the resonance frequency obtained by the values of the coil 2006 and the capacitor 2005 to raise the temperature of the susceptor 2007 during initial operation, and The induction heater control logic 2004 supplies an alternating current to the coil 2006 at a resonant frequency.

In the MCU 2001, the PWM signal is input to the induction heater control logic 2004 so that the frequency of the susceptor 2007 is farther than the resonance frequency so that the temperature of the susceptor 2007 does not rise any more when a predetermined time has elapsed, and the induction heater control logic ( 2004) thus supplies the AC current to the coil 2006 at a frequency farther than the resonance frequency.

As described above, a PWM signal may be input to the induction heater control logic 2004 so that the MCU 2001 adjusts the frequency according to time as preset, and according to an embodiment, the current sensor 2008 and the voltage sensor 2009 ), calculates the temperature of the susceptor 2007, adjusts the frequency of the PWM signal according to the required temperature, inputs it to the induction heater control logic 2004, ) can control the frequency of the alternating current supplied to the susceptor (2007) as the induction heater control logic (2004) supplies an alternating current to the coil (2006). The temperature is changed and the inductance or reactance value is changed, and accordingly, the current and voltage for heating the susceptor 2007 are changed. The current sensor 2008 measures the current supplied to the coil 2006 and inputs it to the MCU 2001 , and the voltage sensor 2009 converts the AC voltage supplied to the coil 2006 into a DC voltage, so that the MCU can check the voltage. It is converted into a level and input to the MCU (2001), which calculates the temperature of the susceptor (2007) according to the changes in the current and voltage values input through the current sensor (2008) and the voltage sensor (2009). The temperature change of the sceptor 2007 is sensed and the frequency of the PWM signal is adjusted according to the required temperature and input to the induction heater control logic 2004, and the induction heater control logic 2004 according to the PWM signal input from the MCU 2001. AC current may be supplied to the coil 2006 while adjusting the frequency.

16 is a view showing another embodiment of a circuit block diagram for induction heating in the induction heating type fine particle generator according to the present invention. In FIG. 16 , the configuration of the symbols as shown in FIG. 15 has the same operation, and referring to FIG. 16 , the temperature sensor 2010 for detecting the temperature of the susceptor 2007 is provided, and the value detected by the temperature sensor 2010 . is input to the MCU 2001, and the MCU 2001 senses the temperature change of the susceptor 2007 accordingly, adjusts the frequency of the PWM signal according to the required temperature, and inputs it to the induction heater control logic 2004. The control logic 2004 may supply an alternating current to the coil 2006 while adjusting the frequency according to the PWM signal input from the MCU 2001 .

Claims (20)

An aerosol-forming substrate comprising an aerosol-forming substrate on the inside and having a cavity into which a smoking article wrapped with a wrapping paper on the outside can be inserted and by heating the aerosol-forming substrate of the smoking article inserted into the cavity In the device for generating fine particles of a grippable and portable size to form,
an excitation coil wound multiple times provided in the device;
A metal made of a hollow cylindrical-shaped thin plate defining a cavity, provided inside the excitation coil to enclose the excitation coil in the device, and reacted with the excitation coil and heated to a temperature of 400° C. or less by induction heating due to eddy current loss A susceptor of a material, wherein the inner surface of the susceptor is in contact with at least a portion of the outer surface of the wrapping paper of the smoking article inserted into the cavity, and the induction heated susceptor heats the aerosol-forming substrate inside the wrapping paper by heat transfer to generate an aerosol a susceptor that forms
an insulator provided between the susceptor and the excitation coil in the device to prevent heat from the susceptor from being transferred to the excitation coil;
a structure for supporting at least a portion of at least one of a susceptor and an excitation coil provided in the device;
Provided in the device, a susceptor temperature obtaining unit for obtaining the temperature of the susceptor,
a rechargeable battery provided within the device to function as a direct current power source;
It is electrically connected to the excitation coil, the susceptor temperature acquisition unit, and the battery, and receives the DC power supplied from the battery, and depending on the temperature of the susceptor, generates an alternating current of a resonance frequency or an alternating current of a frequency different from the resonance frequency. A grippable and portable sized fine particle generator with an induction heating heater, characterized in that it comprises a control unit for induction heating the susceptor to a desired temperature by supplying it to the excitation coil. According to claim 1,
A microparticle generating device further comprising a susceptor inserted through a lower center of a smoking article inserted into the cavity and capable of heating in direct contact with an aerosol-forming substrate in the smoking article. According to claim 1,
The susceptor is a fine particle generator, characterized in that made of a thin stainless steel plate. According to claim 1,
The device for generating fine particles, characterized in that the insulating portion is an air layer provided between the susceptor and the excitation coil. According to claim 1,
that the structure supporting at least a part of at least one of the susceptor and the excitation coil is made of heat-resistant plastic and is provided between the susceptor and the excitation coil to function as an insulating part to prevent the heat of the susceptor from being transferred to the excitation coil A device for generating fine particles. 6. The method of claim 5,
The insulated plastic structure supports at least a part of the susceptor outside the susceptor and is an insulated pipe in which an excitation coil is wound on the outer surface of the structure. 6. The method of claim 5,
The insulating plastic structure has a thermal insulator ring made of ceramic powder with low thermal conductivity interposed between the susceptor and the susceptor separately to support the susceptor, thereby preventing heat from the susceptor from leaking to the outside. Device. According to claim 1,
A fine particle generator, characterized in that the outer surface of the excitation coil is wrapped with a ferrite sheet so as to be in contact with the excitation coil to prevent magnetic flux from leaking out of the excitation coil. According to claim 1,
A fine particle generator, characterized in that the graphite sheet is wrapped on the outer surface of the excitation coil to radiate the heat of the excitation coil to the outside. According to claim 1,
A fine particle generator, characterized in that a laminate of a ferrite sheet and a graphite sheet is wrapped on the outer surface of the excitation coil to prevent leakage of magnetic flux to the outside of the excitation coil and to radiate the heat of the excitation coil to the outside. 11. The method according to any one of claims 1 to 10,
The device for generating fine particles, characterized in that it further comprises a pressure sensor for detecting the negative pressure caused by the user's puff for the smoking article inserted into the cavity in the airflow path communicating with the cavity. 11. The method according to any one of claims 1 to 10,
The susceptor temperature acquisition unit is configured to measure changes in current and voltage for heating the susceptor according to the inductance or reactance value that changes according to the change in temperature of the susceptor. Fine particle generator, characterized in that for calculating the temperature of the susceptor. 11. The method according to any one of claims 1 to 10,
The susceptor temperature acquisition unit is a temperature sensor that comes in contact with the outer surface of the susceptor and senses a change in resistance according to the temperature change of the susceptor to measure the temperature, and the lead wire of the temperature sensor is electrically connected to the control unit. Fine particle generator. 14. The method of claim 13,
The temperature sensor and the lead wire of the temperature sensor are wrapped by a heat-resistant shrink tube surrounding the outer surface of the susceptor and are in contact with the outer surface of the susceptor. 11. The method according to any one of claims 1 to 10,
A device for generating fine particles, characterized in that the smoking article includes a liquid cartridge therein. 16. The method of claim 15,
The liquid cartridge is a microparticle generating device, characterized in that it contains a liquid or gel composition containing glycerin VG. 16. The method of claim 15,
A device for generating fine particles, characterized in that it further comprises a tobacco body upstream or downstream of the liquid cartridge in the smoking article. 16. The method of claim 15,
The smoking article further comprises a filter and a tube, and the filter, tube and liquid cartridge are wrapped with a single wrapping paper to form a fine particle generator. 11. The method according to any one of claims 1 to 10,
A device for generating fine particles, characterized in that the smoking article comprises a tobacco body containing glycerin VG. 20. The method of claim 19,
The smoking article further comprises a filter and a tube, wherein the filter, tube and tobacco body are wrapped with a single wrapping paper to form a fine particle generator.

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