Aerosol generation device

Abstract

This aerosol generation device comprises: a housing including an accommodation space for accommodating an aerosol generation article; and a heater positioned inside the housing and heating the aerosol generation article accommodated in the accommodation space as power is supplied. The heater may comprise: a polyimide (PI) film disposed to surround the aerosol generation article accommodated in the accommodation space; a conductive pattern disposed on the polyimide film and generating heat as power is supplied; and a sensing pad disposed so as not to overlap the conductive pattern and for detecting the capacitance of the accommodation space.

Description

Aerosol generating device

[0001] The embodiments relate to an aerosol generating device comprising a sensing pad arranged on a polyimide film so as not to overlap a conductive pad.

[0002] Recently, there has been a growing demand for alternative methods that overcome the shortcomings of conventional cigarettes. For example, there is a growing demand for systems that generate aerosol by heating cigarettes or aerosol-generating materials using an aerosol generator, rather than by burning cigarettes to produce aerosol. Accordingly, research into heated aerosol generators is actively underway.

[0003] To shorten the user's smoking time and improve convenience, the aerosol generating device can detect whether a cigarette is stored inside the device via a sensor. If a cigarette is confirmed to be stored, it can supply power to a heater to preheat the cigarette. Furthermore, to prevent the user from receiving excessively high temperatures of aerosol, the aerosol generating device can detect whether the cigarette is over-humidified and adjust the heating temperature of the cigarette based on the over-humidified state.

[0004] In existing aerosol generating devices, there were limitations in miniaturizing the overall size of the aerosol generating device because it required additional space to place a sensor for detecting whether a cigarette was accepted or whether the cigarette was over-moistened, or because it required an additional configuration (e.g., a separate layer) to mount the sensor.

[0005] In addition, in existing aerosol generating devices, since the sensor is placed at a certain distance from the space where the cigarette is received, it was difficult to precisely detect changes in the characteristics of the space where the cigarette is received (e.g., changes in electrostatic capacity) depending on whether the cigarette is received or the over-humidification state of the cigarette.

[0006] If the change in the characteristics of the receiving space cannot be precisely detected, a situation may arise where the heater is operated even though the cigarette has not been received due to a misjudgment of whether the cigarette has been received or where the cigarette is incorrectly judged to be over-humidified and the cigarette cannot be heated to a specified temperature. Therefore, the need for a method that can improve the precision of the sensor while promoting miniaturization of the aerosol generating device has arisen.

[0007] Various embodiments of the present disclosure aim to provide an aerosol generating device capable of more precisely detecting whether a cigarette is accepted or whether the cigarette is over-humidified without adding a separate configuration, through a structure in which a sensor for detecting whether a cigarette is accepted or whether the cigarette is over-humidified is disposed within a heater.

[0008] The problems to be solved through the embodiments of the present disclosure are not limited to the problems described above, and problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the embodiments belong from this specification and the attached drawings.

[0009] An aerosol generating device according to one embodiment includes a housing including a receiving space for receiving an aerosol generating article, and a heater positioned inside the housing and heating the aerosol generating article received in the receiving space when power is supplied, wherein the heater may include a polyimide (PI) film arranged to surround the aerosol generating article received in the receiving space, a conductive pattern arranged on the polyimide film and generating heat when power is supplied; and a sensing pad arranged so as not to overlap the conductive pattern and for detecting electrostatic capacitance of the receiving space.

[0010] An aerosol generating device according to various embodiments of the present disclosure can detect the electrostatic capacitance of a receiving space without adding a separate configuration for arranging a sensing pad.

[0011] In addition, the aerosol generating device according to various embodiments of the present disclosure can more accurately measure the electrostatic capacity of the receiving space, and as a result, can precisely detect whether an aerosol generating article is received or whether the aerosol generating article is over-humidified.

[0012] The effects of the embodiments are not limited to the effects described above, and effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the embodiments belong from this specification and the attached drawings.

[0013] FIG. 1 is a perspective view illustrating an aerosol generating device according to one embodiment.

[0014] FIG. 2 is a drawing showing a cross-section of a portion of the aerosol generating device illustrated in FIG. 1.

[0015] FIG. 3 is an exploded perspective view of a heater, a fixing member, and an insulating member of an aerosol generating device according to one embodiment.

[0016] FIG. 4 is a drawing showing the arrangement structure of components of a heater in a state where a polyimide film is spread out according to one embodiment.

[0017] Figure 5 is a drawing for explaining the rolling process of the polyimide film illustrated in Figure 4.

[0018] FIG. 6 is a perspective view showing components of a heater when the polyimide film illustrated in FIG. 5 is fully rolled.

[0019] FIG. 7 is a perspective view showing a protective sheet for surrounding the outer surface of a polyimide film according to another embodiment.

[0020] FIG. 8 is a block diagram illustrating some components of an aerosol generating device according to one embodiment.

[0021] FIG. 9 is a flowchart for explaining a control operation based on the electrostatic capacitance value of the receiving space detected through the sensing pad of the aerosol generating device according to one embodiment.

[0022] Fig. 10 is a block diagram of an aerosol generating device according to one embodiment.

[0023] The terms used in the examples have been selected from widely used, current terms, taking into account the functions of the present disclosure. However, these terms may vary depending on the intentions of those skilled in the art, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the relevant description of the invention. Therefore, the terms used in this disclosure should not be defined simply as names, but rather based on their meanings and the overall content of the present invention.

[0024] When a part of the specification is said to "include" a component, this does not exclude other components, but rather implies the inclusion of other components, unless otherwise specifically stated. Furthermore, terms such as "-unit" and "-module" used in the specification refer to a unit that processes at least one function or operation, which may be implemented in hardware, software, or a combination of hardware and software.

[0025] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present disclosure.

[0026] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0027] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0028] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0029] Below, embodiments of the present disclosure are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present disclosure. However, the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein.

[0030] Regardless of the drawing symbol, identical or similar components are given the same reference number and duplicate descriptions thereof are omitted.

[0031] FIG. 1 is a perspective view illustrating an aerosol generating device according to one embodiment.

[0032] Referring to FIG. 1, an aerosol generating device (100) according to one embodiment may include a housing (110) capable of accommodating at least a portion of an aerosol generating article (10) (or 'cigarette').

[0033] The housing (110) can form the overall appearance of the aerosol generating device (100), and components of the aerosol generating device (100) can be arranged in the internal space (or 'mounting space') of the housing (110). For example, a heater, a battery, and / or a processor for heating the aerosol generating article (10) can be arranged in the internal space of the housing (110), but the components of the aerosol generating device (100) arranged in the internal space of the housing (110) are not limited thereto.

[0034] According to one embodiment, the housing (110) may include a receiving space (110h) (or 'cavity') for receiving at least a portion of the aerosol generating article (10). The aerosol generating article (10) may be inserted or received within the interior of the housing (110) through the receiving space (110h), and the aerosol generating article (10) received within the housing (110) may be heated by a heater disposed within the interior space of the housing (110).

[0035] As the aerosol generating article (10) is heated by the heater assembly, an aerosol may be generated inside the housing (110), and the generated aerosol may be discharged to the outside of the aerosol generating device (100) through the aerosol generating article (10) or the empty space between the aerosol generating article (10) and the receiving space (110h) and supplied to the user.

[0036] Although the overall external shape of the aerosol generating device (100) is shown in the drawing only in an embodiment in which the cross-section is formed into a columnar shape with an oval shape, the shape of the aerosol generating device (100) is not limited to the illustrated embodiment. In other embodiments (not shown), the aerosol generating device (100) may be formed into an overall cylindrical shape, or may be formed into a polygonal column shape (e.g., a triangular column or a square column).

[0037] According to one embodiment, the aerosol generating device (100) may further include a cover (120) movably arranged in the housing (110) to open or close the receiving space (110h).

[0038] In one example, the cover (120) may be positioned to cover the receiving space (110h) in the first position (or 'closed position') so that the receiving space (110h) is not exposed to the outside of the aerosol generating device (100). The cover (120) may be positioned in the first position and may protect the receiving space (110h) from external impact or inflow of external foreign substances by preventing the receiving space (110h) from being exposed to the outside.

[0039] In another example, the cover (120) may be moved from a first position to a second position (or 'open position') such that the receiving space (110h) is exposed to the outside, and the aerosol generating article (10) may be received or inserted into the interior of the receiving space (110h) when the cover (120) is in the second position.

[0040] According to one embodiment, the cover (120) can slide between a first position or a second position along a groove formed in an area of ​​the housing (110) (e.g., an area facing the z direction), but the manner in which the cover (120) moves is not limited thereto. In addition, the cover (120) that has moved from the first position to the second position can return to the first position by elastic force (or 'restoring force') even without a separate operation by the user, but is not limited thereto.

[0041] Hereinafter, with reference to FIG. 2, the components of the aerosol generating device (100) placed in the internal space of the housing (110) will be specifically examined.

[0042] FIG. 2 is a drawing showing a cross-section of a portion of the aerosol generating device illustrated in FIG. 1.

[0043] Referring to FIG. 2, an aerosol generating device (100) according to one embodiment may include a housing (110), a cover (120), and a heater (130). The aerosol generating device (100) is not limited to these components, and at least one component may be added according to an embodiment, or one of the above-described components (e.g., the cover (120)) may be omitted.

[0044] The housing (110) forms the overall appearance of the aerosol generating device (100), and a space may be provided inside the housing (110) in which components of the aerosol generating device (100) can be arranged.

[0045] According to one embodiment, the housing (110) may include a receiving space (110h), and at least a portion of an aerosol generating article (e.g., the aerosol generating article (10) of FIG. 1) may be inserted or received inside the housing (110) through the receiving space (110h). Although the drawing illustrates an embodiment in which the receiving space (110h) is formed in an area of ​​the housing (110) facing the z direction, the arrangement structure of the receiving space (110h) is not limited to the illustrated embodiment. In another embodiment (not shown), the receiving space (110h) may be formed in an area of ​​the housing (110) facing the y direction or the -y direction.

[0046] The heater (130) is located in the internal space of the housing (110), and can heat the aerosol-generating article (10) accommodated in the receiving space (110h) to generate an aerosol as power is supplied from a battery (not shown). For example, the heater (130) is arranged to surround the outer circumference of the aerosol-generating article (10) accommodated in the receiving space (110h), and can generate heat as power is supplied to heat the aerosol-generating article. At this time, the vaporized particles generated as the aerosol-generating article is heated can be mixed with air flowing in from the outside through the receiving space (110h) to generate an aerosol.

[0047] According to one embodiment, the heater (130) may include a polyimide film (131), a conductive pattern (133), and a sensing pad (135).

[0048] The polyimide film (131) (or 'base film') may include polyimide (PI) having heat resistance or insulation properties to form the base of the heater (130), and may be arranged to surround the outer surface of an aerosol generating article accommodated in a receiving space (110h) inside the housing (110).

[0049] The conductive pattern (133) is disposed on the polyimide film (131) and can heat the aerosol-generating article when power is supplied. For example, the conductive pattern (133) is disposed on a region (e.g., an inner region) of the polyimide film (131) facing the aerosol-generating article and can be electrically connected to a battery (not shown). The conductive pattern (133) can generate heat when power is supplied from the battery, thereby heating the aerosol-generating article.

[0050] According to one embodiment, the conductive pattern (133) may include stainless steel applied or printed on the polyimide film (131), but the manner in which the conductive pattern (133) is arranged on the polyimide film (131) or the type of the conductive pattern (133) is not limited thereto.

[0051] The sensing pad (135) may be arranged on the polyimide film (131) so as not to overlap with the conductive pattern (133) and may serve to detect the electrostatic capacity within the receiving space (110h). For example, the sensing pad (135) may include at least one electrode pattern arranged so as not to overlap with the conductive pattern (133). In the present disclosure, the expression 'the sensing pad (135) is arranged so as not to overlap with the conductive pattern (133)' may mean a structure in which the sensing pad (135) and the conductive pattern (133) are arranged so as not to overlap when viewed in the radial direction of the heater (130).

[0052] When the sensing pad (135) is arranged to overlap with the conductive pattern (133), the detection performance for the electrostatic capacity of the sensing pad (135) may be degraded or the sensing pad (135) may be damaged due to the heat generated from the conductive pattern (133) as power is supplied to the conductive pattern (133). On the other hand, the aerosol generating device (100) according to one embodiment can prevent malfunction or damage to the sensing pad (135) due to the heat generated from the conductive pattern (133) by arranging the conductive pattern (133) and the sensing pad (135) on the polyimide film (131) so that they do not overlap.

[0053] The sensing pad (135) can be electrically or operatively connected to a processor (not shown) disposed on a printed circuit board (170) via an electrical connection member (160), and the processor can detect the electrostatic capacitance value inside the receiving space (110h) via the sensing pad (135).

[0054] The processor can detect whether an aerosol-generating article is accommodated in the accommodation space (110h) or whether the aerosol-generating article accommodated in the accommodation space (110h) is over-humidified based on a change in the electrostatic capacity value inside the accommodation space (110h) detected through the sensing pad (135), but a detailed description of this will be provided later.

[0055] According to one embodiment, the aerosol generating device (100) may further include a fixing member (140) and an insulating member (150).

[0056] The fixing member (140) may serve to fix the position of the heater (130) inside the housing (110). According to one embodiment, the fixing member (140) may include an upper fixing member (141) (or 'first fixing member') and a lower fixing member (142) (or 'second fixing member').

[0057] The upper fixing member (141) is located at the top (e.g., in the z direction of FIG. 2) of the heater (130) inside the housing (110), and can fix the position of one end (or 'top') of the heater (130) facing the z direction.

[0058] The lower fixing member (142) is located at the lower end (e.g., in the -z direction of FIG. 2) of the heater (130) and is spaced apart from the upper fixing member (141) inside the housing (110), and can fix the position of the other end (or 'lower end') of the heater (130) facing the -z direction.

[0059] The insulating member (150) is arranged to surround the outer surface of the heater (130) inside the housing (110), and can block heat generated from the heater (130) from being transferred to the outer surface of the housing (110). For example, if heat generated from the heater (130) is transferred to the outer surface of the housing (110), the temperature of the surface of the housing (110) may rise excessively, making it difficult for a user to hold the housing (110).

[0060] An aerosol generating device (100) according to one embodiment can improve user convenience by preventing the temperature of the surface of the housing (110) from excessively rising due to heat generated from the heater (130) through the insulating member (150).

[0061] Hereinafter, with reference to FIG. 3, the coupling relationship between the heater (130), the fixing member (140), and the insulating member (150) will be specifically examined.

[0062] Fig. 3 is an exploded perspective view of a heater, a fixing member, and an insulating member of an aerosol generating device according to one embodiment. The heater (130), the fixing member (140), and the insulating member (150) illustrated in Fig. 3 may be an embodiment of the heater (130), the fixing member (140), and the insulating member (150) of the aerosol generating device (100) of Fig. 2, and any redundant description thereof will be omitted below.

[0063] Referring to FIG. 3, the fixing member (140) may serve to fix the position of the heater (130) within the aerosol generating device. For example, the fixing member (140) may be coupled to at least one area of ​​the heater (130) to fix the position of the heater (130) so that the heater (130) does not move within the housing (e.g., the housing (110) of FIGS. 1 and 2) during use of the aerosol generating device.

[0064] According to one embodiment, the fixing member (140) may include an upper fixing member (141) coupled with one end of the heater (130) and a lower fixing member (142) coupled with the other end opposite to one end of the heater (130).

[0065] The upper fixing member (141) is connected to one end of the heater (130) facing upward (e.g., the z direction in FIG. 2) and can fix the position of one end of the heater (130) inside the housing.

[0066] The lower fixing member (142) is spaced apart from the upper fixing member (141) and is coupled to the other end of the heater (130) facing in the lower direction (e.g., the -z direction in FIG. 2), and can fix the position of the other end of the heater (130) inside the housing.

[0067] An aerosol generating device according to one embodiment (e.g., an aerosol generating device (100) of FIGS. 1 to 2) can stably heat an aerosol generating article (e.g., an aerosol generating article (10) of FIG. 1) by fixing the position of a heater (130) inside a housing through an upper fixing member (141) and / or a lower fixing member (142).

[0068] For example, the fixing member (140) may be formed of a polymer material (e.g., polyether ether ketone (PEEK)) having excellent chemical resistance and stiffness as it is placed adjacent to the heater (130) where the aerosol is generated, but the material of the fixing member (140) is not limited thereto.

[0069] The insulating member (150) is arranged to surround the outer surface of the heater (130) and can serve to block heat generated from the heater (130) from being emitted to the outside. For example, the insulating member (150) is arranged to surround the outer surface of the heater (130) and can block heat generated from the heater (130) during the heating process of the aerosol generating product from reaching the outer surface of the housing.

[0070] According to one embodiment, the insulating member (150) may include a first insulating member (151) and a second insulating member (152) coupled to the first insulating member (151). For example, the first insulating member (151) and the second insulating member (152) may be coupled to each other in such a manner that a protrusion of the second insulating member (152) is coupled to a recess of the first insulating member (151), but the coupling method of the first insulating member (151) and the second insulating member (152) is not limited thereto.

[0071] When the first insulating member (151) and the second insulating member (152) are combined, the first insulating member (151) may be arranged to surround at least one side of the heater (130), and the second insulating member (152) may be arranged to surround the remaining side of the heater (130).

[0072] In an aerosol generating device according to one embodiment, when the first insulating member (151) and the second insulating member (152) are combined, the first insulating member (151) and the second insulating member (152) are arranged to completely surround the circumference of the heater (130), thereby effectively blocking heat generated from the heater (130) from being emitted to the outside.

[0073] For example, the insulating member (150) may be formed of a polymer material having excellent heat resistance (e.g., polyether ether ketone (PEEK)), but the material of the insulating member (150) is not limited thereto.

[0074] Below, the process of manufacturing the heater (130) will be specifically examined with reference to FIGS. 4 to 6.

[0075] FIG. 4 is a drawing showing the arrangement structure of components of a heater when a polyimide film is spread out according to one embodiment, FIG. 5 is a drawing for explaining a process of rolling the polyimide film shown in FIG. 4, and FIG. 6 is a perspective view showing components of a heater when the polyimide film shown in FIG. 5 is completely rolled.

[0076] Referring to FIGS. 4 to 6, a heater (130) according to one embodiment may include a polyimide film (131), an inner sheet (132), a conductive pattern (133), an outer sheet (134), and a sensing pad (135). The heater (130) illustrated in FIGS. 4 to 6 may be an embodiment of a heater (130) applicable to the aerosol generating device (100) of FIGS. 1 to 2, and any redundant description thereof will be omitted below.

[0077] The inner sheet (132) may be placed on one area of ​​the polyimide film (131) when the polyimide film (131) is in an unfolded state, as illustrated in FIG. 4. For example, the inner sheet (132) includes a material having high thermal conductivity and elasticity (e.g., stainless steel), and may be placed on one end of the polyimide film (131) when the polyimide film (131) is in an unfolded state.

[0078] The outer sheet (134) may be placed in another region of the polyimide film (131) spaced apart from the inner sheet (132) when the polyimide film (131) is in an unfolded state. For example, the outer sheet (134) may include a material (e.g., stainless steel) having high thermal conductivity and elasticity like the inner sheet (132), and may be placed in another region of the polyimide film (131) spaced apart from the inner sheet (132) by the length of the inner sheet (132).

[0079] As the inner sheet (132) and the outer sheet (134) are spaced apart from each other on the polyimide film (131), an area where no sheets are placed can be formed between the inner sheet (132) and the outer sheet (134) of the polyimide film (131), and a conductive pattern (133) can be printed or applied to the area. That is, when the polyimide film (131) is in an unfolded state, the inner sheet (132), the conductive pattern (133), and the outer sheet (134) can be sequentially placed on the polyimide film (131).

[0080] At least a portion of the conductive pattern (133) (hereinafter referred to as a 'terminal region') may be positioned to be exposed to the outside of the polyimide film (131), and the terminal region of the conductive pattern (133) may be electrically connected to a battery (not shown) to receive power from the battery.

[0081] The sensing pad (135) may be placed on the inner sheet (132) and / or the outer sheet (134) and may serve to detect a change in the electrostatic capacity value. The sensing pad (135) may include at least one electrode pattern printed or mounted on the inner sheet (132) and / or the outer sheet (134), and the aerosol generating device (e.g., the aerosol generating device (100) of FIGS. 1 and 2) may detect a change in the electrostatic capacity value based on the magnitude and / or frequency of an electrical signal received from the at least one electrode pattern.

[0082] According to one embodiment, the sensing pad (135) may be arranged in the lower region of the inner sheet (132) and / or the outer sheet (134) as illustrated in FIG. 4, but the arrangement structure of the sensing pad (135) is not limited thereto. In another embodiment, the sensing pad (135) may be arranged in the upper region or center of the inner sheet (132) and / or the outer sheet (134) as long as it is arranged so as not to overlap with the conductive pattern (133).

[0083] In addition, although the drawing only shows an embodiment in which the sensing pad (135) is placed on both the inner sheet (132) and the outer sheet (134), depending on the embodiment, the sensing pad (135) may be placed on only one of the inner sheet (132) and the outer sheet (134).

[0084] The heater (130) can be formed by rolling an unfolded polyimide film (131) into a circular or oval shape. For example, as illustrated in FIG. 5, one end of the polyimide film (131) on which the inner sheet (132) is disposed and the other end of the polyimide film (131) can be rolled. When the polyimide film (131) is completely rolled as illustrated in FIG. 6, a tubular heater (130) having a circular or oval cross-section can be formed. The tubular heater (130) can be arranged to surround the outer circumference of an aerosol generating article (e.g., the aerosol generating article (10) of FIG. 1) inside an aerosol generating device, and can generate heat to heat the aerosol generating article when power is supplied to the conductive pattern (133).

[0085] When the polyimide film (131) is in a fully rolled state (or the heater (130) is fully manufactured), the inner sheet (132) can be placed on the inner surface of the heater (130), and the outer sheet (134) can be placed radially spaced from the inner sheet (132).

[0086] The conductive pattern (133) and the sensing pad (135) disposed on the inner sheet (132) and / or the outer sheet (134) can be disposed between the inner sheet (132) and the outer sheet (134), and since the outer surface of the outer sheet (134) is wrapped by the polyimide film (131), the positions of the inner sheet (132), the conductive pattern (133), the sensing pad (135), and the outer sheet (134) can be stably fixed.

[0087] The sensing pad (135) may be positioned between the inner sheet (132) and the outer sheet (134) so ​​as not to overlap with the conductive pattern (133). If the sensing pad (135) overlaps with the conductive pattern (133), the sensing pad (135) may malfunction or be damaged by heat generated from the conductive pattern (133). On the other hand, the heater (130) according to one embodiment can prevent the sensing pad (135) from being damaged or malfunctioning due to heat generated from the conductive pattern (133) through a structure in which the sensing pad (135) is positioned so as not to overlap with the conductive pattern (133).

[0088] According to one embodiment, a heater (130) is manufactured by placing an inner sheet (132), a conductive pattern (133), an outer sheet (134), and a sensing pad (135) on a polyimide film (131) and rolling the polyimide film (131), so that the process of combining the inner sheet (132), the conductive pattern (133), the outer sheet (134), etc. can be omitted, thereby simplifying the manufacturing process of the heater (130).

[0089] In addition, the heater (130) according to one embodiment can utilize the sensing pad (135) without having a separate configuration (e.g., an additional layer) on which the sensing pad (135) can be placed, through a structure in which the sensing pad (135) is placed on the inner sheet (132) and / or the outer sheet (134) for fixing the conductive pattern (133). As a result, the manufacturing cost of the aerosol generating device is reduced, and the space (or 'mounting space') occupied by the sensing pad (135) inside the aerosol generating device is minimized, thereby promoting miniaturization of the aerosol generating device.

[0090] In addition, in the aerosol generating device according to one embodiment, the sensing pad (135) can be arranged adjacent to the receiving space (e.g., the receiving space (110h) of FIGS. 1 and 2) whose electrostatic capacity is to be detected through the arrangement structure of the sensing pad (135) described above, so that the change in electrostatic capacity of the receiving space can be detected more precisely. As a result, the aerosol generating device can more accurately determine whether an aerosol generating article is accommodated in the receiving space or whether the accommodated aerosol generating article is in an over-humidified state, thereby improving user convenience.

[0091] FIG. 7 is a perspective view showing a protective sheet for surrounding the outer surface of a polyimide film according to another embodiment.

[0092] Referring to FIG. 7, according to another embodiment, the heater (130) may include a polyimide film (131), an inner sheet (132), a conductive pattern (133), an outer sheet (134), a sensing pad (135), and a protective sheet (136). The heater (130) illustrated in FIG. 7 may be a component of the heater (130) of FIG. 6 with the protective sheet (136) added, and any redundant description thereof will be omitted below.

[0093] The protective sheet (136) is arranged at the outermost side of the heater (130) and can serve to fix the polyimide film (131), the inner sheet (132), the conductive pattern (133), and the outer sheet (134) of the heater (130). For example, the inner sheet (132), the conductive pattern (133), the outer sheet (134), the polyimide film (131), and the protective sheet (136) can be arranged in that order based on the radial direction of the heater (130), and the protective sheet (136) can be arranged at the outermost side of the heater (130) to prevent external impact from being applied to the inside of the heater (130) or foreign substances from being introduced.

[0094] The sensing pad (135) can be positioned on the inner side facing the polyimide film (131) of the protective sheet (136) so as not to overlap with the conductive pattern (133), and the aerosol generating device (e.g., the aerosol generating device (100) of FIGS. 1 to 2) can detect the electrostatic capacitance of the receiving space (e.g., the receiving space (110h) of FIGS. 1 to 2) where the aerosol generating product is received through the sensing pad (135).

[0095] For example, the processor of the aerosol generating device can calculate the difference between the electrostatic capacity value of the receiving space detected through the sensing pad (135) (or 'internal sensing pad') disposed between the inner sheet (132) and the outer sheet (134) and the electrostatic capacity value of the receiving space detected through the sensing pad (135) (or 'external sensing pad') disposed on the protective sheet (136). The processor can control the operation of the aerosol generating device based on the difference in the calculated electrostatic capacity values. A specific description of the process of controlling the operation of the aerosol generating device by the processor will be described later.

[0096] The drawing only shows an embodiment in which the sensing pad (135) is positioned both in the area between the inner sheet (132) and the outer sheet (134) and on the inner side facing the polyimide film (131) of the protective sheet (136), but is not limited thereto.

[0097] In another embodiment, the sensing pad (135) may be disposed only on the inner side facing the polyimide film (131) of the protective sheet (136). In this case, the processor may detect the amount of change in the electrostatic capacitance value of the receiving space detected through the sensing pad (135) disposed on the inner side facing the polyimide film (131) of the protective sheet (136) (self-capacitance sensing), and control the operation of the aerosol generating device based on the amount of change in the detected electrostatic capacitance value.

[0098] According to one embodiment, the sensing pad (135) may include a plurality of sensing pads (1351, 1352). For example, the sensing pad (135) may include a first sensing pad (1351) and a second sensing pad (1352) that is positioned spaced apart from the first sensing pad (1351). In this case, the processor may calculate a difference between a capacitance value of an accommodation space detected through the first sensing pad (1351) and a detected capacitance value of an accommodation space detected through the first sensing pad (1351) (mutual-capacitance sensing), and control the operation of the aerosol generating device based on the difference in the calculated capacitance values.

[0099] Hereinafter, with reference to FIGS. 8 and 9, the process of controlling the operation of the aerosol generating device based on the electrostatic capacity value detected through the sensing pad (135) of the processor will be specifically examined.

[0100] Fig. 8 is a block diagram illustrating some components of an aerosol generating device according to one embodiment. At least one of the components of the aerosol generating device (100) illustrated in Fig. 8 may be substantially identical or similar to at least one of the components of the aerosol generating device (100) illustrated in Figs. 1 and 2, and any redundant description thereof will be omitted below.

[0101] Referring to FIG. 8, an aerosol generating device (100) according to one embodiment may include a sensing pad (135) (e.g., the sensing pad (135) of FIGS. 2, 6 and 7), a processor (171), and a battery (172). FIG. 8 illustrates only some components of the aerosol generating device (100) of FIGS. 1 and 2, and the components of the aerosol generating device (100) are not limited to the illustrated components.

[0102] The sensing pad (135) can perform a function of detecting the capacity inside the receiving space (e.g., the receiving space (110h) of FIGS. 1 to 2). The sensing pad (135) can output an electrical signal corresponding to a change in the electrostatic capacity of the receiving space, and the output electrical signal can be transmitted to a processor (171) electrically connected to the sensing pad (135).

[0103] The processor (171) can control the overall operation of the aerosol generating device (100). For example, the processor (171) can be placed on a printed circuit board (e.g., printed circuit board (160) of FIG. 2) inside the aerosol generating device (100) and can be electrically or operatively connected to the sensing pad (135) and the battery (172) to control the overall operation of the aerosol generating device (100).

[0104] According to one embodiment, the processor (171) can detect the electrostatic capacity value inside the receiving space through the sensing pad (135) and control the operation of the aerosol generating device (100) based on the detected electrostatic capacity value. For example, the magnitude of the resistance of the sensing pad (135) may vary depending on the electrostatic capacity value inside the receiving space, and as a result, the magnitude of the electrical signal generated from the sensing pad (135) may also vary. The processor can detect a change in the electrostatic capacity value inside the receiving space based on the magnitude of the electrical signal transmitted from the sensing pad (135) and / or the frequency of the power supplied to the sensing pad (135). At this time, the aerosol generating device (100) is disposed on an electrical path between the sensing pad (135) and the battery (172), and may further include a filter (not shown) for detecting the frequency of the power supplied from the battery (172) to the sensing pad (135), but is not limited thereto.

[0105] In one example, the processor (171) can detect a change in the electrostatic capacitance value inside the receiving space through the sensing pad (135) and determine whether an aerosol-generating article (e.g., an aerosol-generating article (10) of FIG. 1) is received in the receiving space based on the change in the detected electrostatic capacitance value. In another example, the processor (171) can also determine whether an aerosol-generating article received in the receiving space is in an over-humidified state based on the change in the electrostatic capacitance value detected through the sensing pad (135).

[0106] The battery (172) can supply power to the components of the aerosol generating device (100) to operate. For example, the battery (172) can supply power to components such as a heater (e.g., heater (130) of FIG. 2) or a processor (171). In this case, the battery (172) may be a rechargeable battery or a disposable battery. For example, the battery (172) may be a lithium polymer (LiPoly) battery, but the type of the battery (172) is not limited thereto.

[0107] Hereinafter, with reference to FIG. 9, a process in which the processor (171) controls the operation of the aerosol generating device (100) based on the electrostatic capacity value of the receiving space detected through the sensing pad (135) will be specifically examined.

[0108] FIG. 9 is a flowchart for explaining a control operation based on the electrostatic capacitance value of the receiving space detected through the sensing pad of an aerosol generating device according to one embodiment. In explaining the control operation below, reference will be made to the components of the aerosol generating device (100) illustrated in FIG. 8.

[0109] Referring to FIG. 9, in operation 901, the processor (171) of the aerosol generating device (100) according to one embodiment can detect the electrostatic capacitance of the receiving space (e.g., the receiving space (110h) of FIGS. 1 to 2) through the sensing pad (135). For example, the processor (171) can detect the amount of change in the electrostatic capacitance value of the receiving space in which the aerosol generating article (e.g., the aerosol generating article (10) of FIG. 1) is received through the sensing pad (135).

[0110] In operation 902, the processor (171) of the aerosol generating device (100) according to one embodiment can detect whether an aerosol generating article is received in the receiving space or whether the received aerosol generating article is in an over-humidified state based on the electrostatic capacity of the receiving space detected in operation 901.

[0111] In one example, the processor (171) can detect whether an aerosol-generating article is accommodated inside the accommodation space based on the amount of change in the electrostatic capacity of the accommodation space detected through the sensing pad (135). For example, if the processor (171) determines that an aerosol-generating article is accommodated inside the accommodation space, the processor (171) can supply power to a heater (e.g., heater (130) of FIG. 2) through a battery (172) to preheat the heater.

[0112] In another example, the processor (171) can estimate the moisture content of the aerosol-generating article accommodated in the accommodation space based on the change in electrostatic capacity of the accommodation space detected through the sensing pad (135) when it is confirmed that an aerosol-generating article is accommodated in the accommodation space, and can detect whether the aerosol-generating article is over-humidified based on the estimated moisture content.

[0113] In the present disclosure, the expression 'the aerosol-generating article is in a super-moistened state' may mean a state in which the medium portion included in the aerosol-generating article contains moisture of a specified amount (e.g., 15 wt%) or more relative to the total weight of the medium portion, and the expression may be used with the same meaning hereinafter.

[0114] When an aerosol-generating article in a hyper-humidified state is heated, a high-temperature aerosol may be generated due to the high moisture content, which may cause discomfort to the user when inhaled.

[0115] According to one embodiment, the processor (171) of the aerosol generating device (100) controls the power supplied from the battery (172) to the heater when the aerosol generating article accommodated in the accommodation space is in a closed state, thereby increasing the preheating time of the aerosol generating article compared to when heating a typical aerosol generating article. Accordingly, the aerosol generating device (100) can prevent high-temperature aerosol from being generated, thereby improving the user's smoking experience.

[0116] Fig. 10 is a block diagram of an aerosol generating device according to one embodiment.

[0117] The aerosol generating device (1) may include a battery (12), a control unit (13), a sensor unit (19), an output unit (40), an input unit (70), a communication unit (50), a memory (60), and at least one heater (15). However, the internal structure of the aerosol generating device (1) is not limited to that illustrated in Fig. 10. That is, a person having ordinary skill in the art related to the present embodiment will understand that, depending on the design of the aerosol generating device (1), some of the components illustrated in Fig. 10 may be omitted or new components may be added.

[0118] The sensor unit (19) can detect the status of the aerosol generating device (1) or the status of the surroundings of the aerosol generating device (1) and transmit the detected information to the control unit (13). Based on the detected information, the control unit (13) can control the aerosol generating device (1) so that various functions such as controlling the operation of the cartridge heater (15) and / or the stick heater (15), restricting smoking, determining whether a stick and / or cartridge is inserted, and displaying a notification are performed.

[0119] The sensor unit (19) may include at least one of a temperature sensor (191), a puff sensor (192), an insertion detection sensor (193), a reuse detection sensor (194), a cartridge detection sensor (195), a cap detection sensor (196), and a movement detection sensor (197).

[0120] The temperature sensor (191) can detect the temperature at which the cartridge heater (15) and / or the stick heater (15) is heated. The aerosol generating device (1) may include a separate temperature sensor that detects the temperature of the cartridge heater (15) and / or the stick heater (15), or the cartridge heater (15) and / or the stick heater (15) itself may serve as the temperature sensor.

[0121] The temperature sensor (191) can output a signal corresponding to the temperature of the cartridge heater (15) and / or the stick heater (15). For example, the temperature sensor (191) can include a resistance element whose resistance value changes in response to a change in the temperature of the cartridge heater (15) and / or the stick heater (15). It can be implemented by a thermistor, which is an element that utilizes the property of changing resistance depending on temperature. At this time, the temperature sensor (191) can output a signal corresponding to the resistance value of the resistance element as a signal corresponding to the temperature of the cartridge heater (15) and / or the stick heater (15). For example, the temperature sensor (191) can be configured as a sensor that detects the resistance value of the cartridge heater (15) and / or the stick heater (15). At this time, the temperature sensor (191) can output a signal corresponding to the resistance value of the cartridge heater (15) and / or the stick heater (15) as a signal corresponding to the temperature of the cartridge heater (15) and / or the stick heater (15).

[0122] A temperature sensor (191) may be placed around the battery (12) to monitor the temperature of the battery (12). The temperature sensor (191) may be placed adjacent to the battery (12). For example, the temperature sensor (191) may be attached to one surface of the battery (12). For example, the temperature sensor (191) may be mounted on one surface of a printed circuit board.

[0123] A temperature sensor (191) is placed inside the main body and can detect the internal temperature of the main body.

[0124] The puff sensor (192) can detect the user's puff based on various physical changes in the airflow path. The puff sensor (192) can output a signal corresponding to the puff. For example, the puff sensor (192) can be a pressure sensor. The puff sensor (192) can output a signal corresponding to the internal pressure of the aerosol generating device. Here, the internal pressure of the aerosol generating device (1) can correspond to the pressure of the airflow path through which the gas flows. The puff sensor (192) can be arranged in correspondence to the airflow path through which the gas flows in the aerosol generating device (1).

[0125] The insertion detection sensor (193) can detect the insertion and / or removal of the stick. The insertion detection sensor (193) can detect a signal change according to the insertion and / or removal of the stick. The insertion detection sensor (193) can be installed around the insertion space. The insertion detection sensor (193) can detect the insertion and / or removal of the stick according to a change in the permittivity inside the insertion space. For example, the insertion detection sensor (193) can be an inductive sensor and / or a capacitance sensor.

[0126] An inductive sensor may include at least one coil. The coil of the inductive sensor may be positioned adjacent to the insertion space. For example, when a magnetic field changes around a current-carrying coil, the characteristics of the current flowing in the coil may change according to Faraday's law of electromagnetic induction. Here, the characteristics of the current flowing in the coil may include the frequency of the alternating current, the current value, the voltage value, the inductance value, the impedance value, etc.

[0127] An inductive sensor can output a signal corresponding to the characteristics of the current flowing through the coil. For example, an inductive sensor can output a signal corresponding to the inductance value of the coil.

[0128] A capacitance sensor may include a conductor. The conductor of the capacitance sensor may be positioned adjacent to the insertion space. The capacitance sensor may output a signal corresponding to the electromagnetic properties of the surroundings, such as the electrostatic capacitance around the conductor. For example, when a stick including a metallic wrapper is inserted into the insertion space, the electromagnetic properties around the conductor may be changed by the wrapper of the stick.

[0129] A reuse detection sensor (194) can detect whether the stick has been reused. The reuse detection sensor (194) may be a color sensor. The color sensor can detect the color of the stick. The color sensor can detect the color of a portion of the wrapper that wraps the outside of the stick. The color sensor can detect a value for an optical characteristic corresponding to the color of an object based on light reflected from the object. For example, the optical characteristic may be a wavelength of light. The color sensor may be implemented as a single component with the proximity sensor, or may be implemented as a separate component distinct from the proximity sensor.

[0130] At least some of the wrappers constituting the stick may change color due to the aerosol. The reuse detection sensor (194) may be positioned corresponding to a position where at least some of the wrappers that change color due to the aerosol are disposed when the stick is inserted into the insertion space. For example, before the stick is used by a user, the color of at least some of the wrappers may be a first color. At this time, as at least some of the wrappers are wetted by the aerosol generated by the aerosol generating device (1) while passing through the stick, the color of at least some of the wrappers may change to a second color. Meanwhile, the color of at least some of the wrappers may be maintained at the second color after changing from the first color to the second color.

[0131] The cartridge detection sensor (195) can detect the mounting and / or removal of the cartridge. The cartridge detection sensor (195) can be implemented by an inductance-based sensor, a capacitive sensor, a resistance sensor, a Hall sensor (hall IC) using the Hall effect, etc.

[0132] The cap detection sensor (196) can detect the attachment and / or removal of the cap. If the cap is separated from the main body, the cartridge and part of the main body covered by the cap may be exposed to the outside. The cap detection sensor (196) can be implemented by a contact sensor, a hall sensor (hall IC), an optical sensor, or the like.

[0133] A motion detection sensor (197) can detect the movement of the aerosol generating device. The motion detection sensor (197) can be implemented with at least one of an acceleration sensor and a gyro sensor.

[0134] In addition to the sensors (191 to 197) described above, the sensor unit (19) may further include at least one of a humidity sensor, a pressure sensor, a magnetic sensor, a position sensor (GPS), and a proximity sensor. Since the functions of each sensor can be intuitively inferred by a person skilled in the art from its name, a detailed description thereof may be omitted.

[0135] The output unit (40) can output information on the status of the aerosol generating device (1) and provide it to the user. The output unit (40) may include at least one of a display unit (41), a haptic unit (42), and an audio output unit (43), but is not limited thereto. When the display unit (41) and the touch pad form a layered structure to form a touch screen, the display unit (41) can be used as an input device in addition to an output device.

[0136] The display unit (41) can visually provide information about the aerosol generating device (1) to the user. For example, the information about the aerosol generating device (1) can mean various information such as the charging / discharging status of the battery (12) of the aerosol generating device (1), the preheating status of the stick heater (15), the insertion / removal status of the stick and / or cartridge, the mounting / removal status of the cap, or the status in which the use of the aerosol generating device (1) is restricted (e.g., detection of an abnormal item), and the display unit (41) can output the above information to the outside. For example, the display unit (41) can be in the form of an LED light-emitting element. For example, the display unit (41) can be a liquid crystal display panel (LCD), an organic light-emitting display panel (OLED), etc.

[0137] The haptic unit (42) can provide tactile information about the aerosol generating device (1) to the user by converting an electrical signal into a mechanical stimulus or an electrical stimulus. For example, the haptic unit (42) can generate a vibration corresponding to the completion of the initial preheating when initial power is supplied to the cartridge heater (15) and / or the stick heater (15) for a set period of time. The haptic unit (42) can include a vibration motor, a piezoelectric element, or an electrical stimulation device.

[0138] The acoustic output unit (43) can provide information about the aerosol generating device (1) to the user audibly. For example, the acoustic output unit (43) can convert an electrical signal into an acoustic signal and output it to the outside.

[0139] The battery (12) can supply power used to operate the aerosol generating device (1). The battery (12) can supply power so that the cartridge heater (15) and / or the stick heater (15) can be heated. In addition, the battery (12) can supply power required for the operation of other components provided in the aerosol generating device (1), such as the sensor unit (19), the output unit (40), the input unit (70), the communication unit (50), and the memory (60). The battery (12) can be a rechargeable battery or a disposable battery. For example, the battery (12) can be a lithium polymer (LiPoly) battery, but is not limited thereto.

[0140] Although not shown in FIG. 10, the aerosol generating device (1) may further include a power protection circuit. The power protection circuit may be electrically connected to the battery (12) and include a switching element.

[0141] The power protection circuit can block the electrical path to the battery (12) according to certain conditions. For example, the power protection circuit can block the electrical path to the battery (12) when the voltage level of the battery (12) is higher than a first voltage corresponding to overcharge. For example, the power protection circuit can block the electrical path to the battery (12) when the voltage level of the battery (12) is lower than a second voltage corresponding to overdischarge.

[0142] The stick heater (15) can receive power from the battery (12) to heat the medium or aerosol generating material within the stick. Although not shown in FIG. 10, the aerosol generating device (1) may further include a power conversion circuit (e.g., a DC / DC converter) that converts the power of the battery (12) and supplies it to the cartridge heater (15) and / or the stick heater (15). In addition, when the aerosol generating device (1) generates the aerosol by induction heating, the aerosol generating device (1) may further include a DC / AC converter that converts the direct current power of the battery (12) into alternating current power.

[0143] The control unit (13), sensor unit (19), output unit (40), input unit (70), communication unit (50), and memory (60) can receive power from the battery (12) to perform their functions. Although not shown in FIG. 10, a power conversion circuit, such as an LDO (low dropout) circuit or a voltage regulator circuit, which converts the power of the battery (12) and supplies it to each component may be further included. Also, although not shown in FIG. 10, a noise filter may be provided between the battery (12) and the stick heater (15). The noise filter may be a low pass filter. The low pass filter may include at least one inductor and a capacitor. The cutoff frequency of the low pass filter may correspond to the frequency of the high frequency switching current applied from the battery (12) to the stick heater (15). The low pass filter can prevent high frequency noise components from being applied to the sensor unit (19), such as the insertion detection sensor (193).

[0144] In one embodiment, the cartridge heater (15) and / or the stick heater (15) may be formed of any suitable electrically resistive material. For example, suitable electrically resistive materials may be metals or metal alloys including, but not limited to, titanium, zirconium, tantalum, platinum, nickel, cobalt, chromium, hafnium, niobium, molybdenum, tungsten, tin, gallium, manganese, iron, copper, stainless steel, nichrome, and the like. In addition, the stick heater (15) may be implemented as, but not limited to, a metal heating wire, a metal heating plate having electrically conductive tracks arranged thereon, a ceramic heating element, and the like.

[0145] In another embodiment, the stick heater (15) may be an induction heater. For example, the stick heater (15) may include a susceptor that heats the aerosol generating material by generating heat through a magnetic field applied by a coil.

[0146] The input unit (70) can receive information input from a user or output information to the user. For example, the input unit (70) can be a touch panel. The touch panel can include at least one touch sensor that detects touch. For example, the touch sensor can include, but is not limited to, a capacitive touch sensor, a resistive touch sensor, a surface acoustic wave touch sensor, an infrared touch sensor, etc.

[0147] The display unit (41) and the touch panel can be implemented as a single panel. For example, the touch panel can be inserted into the display unit (41) (on-cell type or in-cell type). For example, the touch panel can be added-on to the display unit (41).

[0148] Meanwhile, the input unit (70) may include, but is not limited to, buttons, key pads, dome switches, jog wheels, jog switches, etc.

[0149] The memory (60) is hardware that stores various data processed in the aerosol generating device (1), and can store data processed and data to be processed in the control unit (13). The memory (60) may include at least one type of storage medium among a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., SD or XD memory, etc.), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and an optical disk. The memory (60) may store data such as the operating time of the aerosol generating device (1), the maximum number of puffs, the current number of puffs, at least one temperature profile, and a user's smoking pattern.

[0150] The communication unit (50) may include at least one component for communication with another electronic device. For example, the communication unit (50) may include at least one of a short-range communication unit and a wireless communication unit.

[0151] The short-range wireless communication unit may include, but is not limited to, a Bluetooth communication unit, a BLE (Bluetooth Low Energy) communication unit, a near field communication unit, a WLAN (Wi-Fi) communication unit, a Zigbee communication unit, an infrared (IrDA, infrared Data Association) communication unit, a WFD (Wi-Fi Direct) communication unit, an UWB (ultra wideband) communication unit, an Ant+ communication unit, etc.

[0152] The wireless communication unit may include, but is not limited to, a cellular network communication unit, an Internet communication unit, a computer network (e.g., a LAN or WAN) communication unit, etc.

[0153] Although not shown in FIG. 10, the aerosol generating device (1) further includes a connection interface such as a USB (universal serial bus) interface, and can transmit and receive information or charge a battery (12) by connecting to another external device through a connection interface such as a USB interface.

[0154] The control unit (13) can control the overall operation of the aerosol generating device (1). In one embodiment, the control unit (13) may include at least one processor. The processor may be implemented as an array of multiple logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory storing a program executable by the microprocessor. Furthermore, it will be understood by those skilled in the art to which the present embodiment pertains that the processor may be implemented as other types of hardware.

[0155] The control unit (13) can control the temperature of the stick heater (15) by controlling the supply of power from the battery (12) to the stick heater (15). The control unit (13) can control the temperature of the cartridge heater (15) and / or the stick heater (15) based on the temperature of the cartridge heater (15) and / or the stick heater (15) sensed by the temperature sensor (191). The control unit (13) can adjust the power supplied to the cartridge heater (15) and / or the stick heater (15) based on the temperature of the cartridge heater (15) and / or the stick heater (15). For example, the control unit (13) can determine a target temperature for the cartridge heater (15) and / or the stick heater (15) based on a temperature profile stored in the memory (60).

[0156] The aerosol generating device (1) may include a power supply circuit (not shown) electrically connected to the battery (12) between the battery (12) and the cartridge heater (15) and / or the stick heater (15). The power supply circuit may be electrically connected to the cartridge heater (15), the stick heater (15), or the induction coil (181). The power supply circuit may include at least one switching element. The switching element may be implemented by a bipolar junction transistor (BJT), a field effect transistor (FET), or the like. The control unit (13) may control the power supply circuit.

[0157] The control unit (13) can control power supply by controlling the switching of the switching elements of the power supply circuit. The power supply circuit may be an inverter that converts direct current power output from the battery (12) into alternating current power. For example, the inverter may be configured as a full-bridge circuit or a half-bridge circuit including a plurality of switching elements.

[0158] The control unit (13) can turn on the switching element so that power is supplied from the battery (12) to the cartridge heater (15) and / or the stick heater (15). The control unit (13) can turn off the switching element so that power supply to the cartridge heater (15) and / or the stick heater (15) is cut off. The control unit (13) can control the current supplied from the battery (12) by controlling the frequency and / or duty ratio of the current pulse input to the switching element.

[0159] The control unit (13) can control the voltage output from the battery (12) by controlling the switching of the switching element of the power supply circuit. The power conversion circuit can convert the voltage output from the battery (12). For example, the power conversion circuit can include a buck converter that steps down the voltage output from the battery (12). For example, the power conversion circuit can be implemented using a buck-boost converter, a zener diode, etc.

[0160] The control unit (13) can control the on / off operation of the switching element included in the power conversion circuit to adjust the level of the voltage output from the power conversion circuit. When the on state of the switching element continues, the level of the voltage output from the power conversion circuit may correspond to the level of the voltage output from the battery (12). The duty ratio for the on / off operation of the switching element may correspond to the ratio of the voltage output from the power conversion circuit to the voltage output from the battery (12). As the duty ratio for the on / off operation of the switching element decreases, the level of the voltage output from the power conversion circuit may decrease. The stick heater (15) can be heated based on the voltage output from the power conversion circuit.

[0161] The control unit (13) can control power to be supplied to the stick heater (15) using at least one of the pulse width modulation (PWM) method and the proportional-integral-differential (PID) method.

[0162] For example, the control unit (13) can control a current pulse having a predetermined frequency and duty ratio to be supplied to the stick heater (15) using the PWM method. The control unit (13) can control the power supplied to the stick heater (15) by adjusting the frequency and duty ratio of the current pulse.

[0163] For example, the control unit (13) can determine a target temperature that is the target of control based on the temperature profile. The control unit (13) can control the power supplied to the stick heater (15) by using the PID method, which is a feedback control method using a difference value between the temperature of the stick heater (15) and the target temperature, a value obtained by integrating the difference value over time, and a value obtained by differentiating the difference value over time.

[0164] The control unit (13) can prevent the cartridge heater (15) and / or the stick heater (15) from overheating. For example, the control unit (13) can control the operation of the power conversion circuit so that the supply of power to the cartridge heater (15) and / or the stick heater (15) is cut off based on the temperature of the cartridge heater (15) and / or the stick heater (15) exceeding a preset limit temperature. For example, the control unit (13) can reduce the amount of power supplied to the cartridge heater (15) and / or the stick heater (15) by a certain percentage based on the temperature of the cartridge heater (15) and / or the stick heater (15) exceeding a preset limit temperature. For example, the control unit (13) can determine that the aerosol generating substance contained in the cartridge is exhausted based on the temperature of the cartridge heater (15) exceeding the limit temperature, and can cut off the supply of power to the cartridge heater (15).

[0165] The control unit (13) can control the charging and discharging of the battery (12). The control unit (13) can check the temperature of the battery (12) based on the output signal of the temperature sensor (191).

[0166] When a power line is connected to the main body electrode of the aerosol generating device (1), the control unit (13) can check whether the temperature of the battery (12) is higher than or equal to the first limit temperature, which is a criterion for blocking charging of the battery (12). If the temperature of the battery (12) is lower than the first limit temperature, the control unit (13) can control the battery (12) to be charged based on a preset charging current. If the temperature of the battery (12) is higher than or equal to the first limit temperature, the control unit (13) can block charging of the battery (12).

[0167] When the power of the aerosol generating device (1) is turned on, the control unit (13) can check whether the temperature of the battery (12) is higher than or equal to the second limit temperature, which is a standard for blocking discharge of the battery (12). If the temperature of the battery (12) is lower than the second limit temperature, the control unit (13) can control to use the power stored in the battery (12). If the temperature of the battery (12) is higher than or equal to the second limit temperature, the control unit (13) can stop using the power stored in the battery (12).

[0168] The control unit (13) can calculate the remaining capacity of the power stored in the battery (12). For example, the control unit (13) can calculate the remaining capacity of the battery (12) based on the voltage and / or current sensing values ​​of the battery (12).

[0169] The control unit (13) can determine whether a stick is inserted into the insertion space through the insertion detection sensor (193). The control unit (13) can determine that a stick is inserted based on an output signal of the insertion detection sensor (193). If it is determined that a stick is inserted into the insertion space, the control unit (13) can control to supply power to the cartridge heater (15) and / or the stick heater (15). For example, the control unit (13) can supply power to the cartridge heater (15) and / or the stick heater (15) based on a temperature profile stored in the memory (60).

[0170] The control unit (13) can determine whether the stick is removed from the insertion space. For example, the control unit (13) can determine whether the stick is removed from the insertion space through the insertion detection sensor (193). For example, the control unit (13) can determine that the stick is removed from the insertion space when the temperature of the stick heater (15) is higher than a limited temperature or when the temperature change slope of the stick heater (15) is higher than a set slope. When it is determined that the stick is removed from the insertion space, the control unit (13) can cut off the power supply to the cartridge heater (15) and / or the stick heater (15).

[0171] The control unit (13) can control the power supply time and / or power supply amount to the stick heater (15) according to the state of the stick detected by the sensor unit (19). The control unit (13) can check the level range that includes the level of the signal of the capacitance sensor based on a lookup table. The control unit (13) can determine the moisture content of the stick according to the checked level range.

[0172] When the stick is in an over-humidified state, the control unit (13) can control the power supply time to the stick heater (15) to increase the preheating time of the stick compared to the normal state.

[0173] The control unit (13) can determine whether a stick inserted into an insertion space has been reused through a reuse detection sensor (194). For example, the control unit (13) can compare a sensing value of a signal of the reuse detection sensor with a first reference range that includes a first color, and if the sensing value is included in the first reference range, it can determine that the stick has not been used. For example, the control unit (13) can compare a sensing value of a signal of the reuse detection sensor with a second reference range that includes a second color, and if the sensing value is included in the second reference range, it can determine that the stick has been used. If it is determined that the stick has been used, the control unit (13) can cut off the supply of power to the cartridge heater (15) and / or the stick heater (15).

[0174] The control unit (13) can determine whether the cartridge is coupled and / or removed through the cartridge detection sensor (195). For example, the control unit (13) can determine whether the cartridge is coupled and / or removed based on the sensing value of the signal of the cartridge detection sensor.

[0175] The control unit (13) can determine whether the aerosol generating material of the cartridge is exhausted. For example, the control unit (13) can preheat the cartridge heater (15) and / or the stick heater (15) by applying power, and determine whether the temperature of the cartridge heater (15) exceeds a limited temperature during the preheating period. If the temperature of the cartridge heater (15) exceeds the limited temperature, the control unit (13) can determine that the aerosol generating material of the cartridge is exhausted. If the control unit (13) determines that the aerosol generating material of the cartridge is exhausted, the control unit (13) can cut off the supply of power to the cartridge heater (15) and / or the stick heater (15).

[0176] The control unit (13) can determine whether the cartridge is usable. For example, the control unit (13) can determine that the cartridge is unusable if the current number of puffs is greater than or equal to the maximum number of puffs set for the cartridge based on data stored in the memory (60). For example, the control unit (13) can determine that the cartridge is unusable if the total heating time of the cartridge heater (15) is greater than or equal to the preset maximum time or the total power supplied to the cartridge heater (15) is greater than or equal to the preset maximum power.

[0177] The control unit (13) can make a judgment regarding the user's inhalation through the puff sensor (192). For example, the control unit (13) can determine whether a puff has been generated based on the sensing value of the signal of the puff sensor. For example, the control unit (13) can determine the intensity of the puff based on the sensing value of the signal of the puff sensor (192). If the number of puffs reaches a preset maximum number of puffs or if no puffs are detected for a preset time or longer, the control unit (13) can cut off the supply of power to the cartridge heater (15) and / or the stick heater (15).

[0178] The control unit (13) can determine whether the cap is attached and / or removed through the cap detection sensor (196). For example, the control unit (13) can determine whether the cap is attached and / or removed based on the sensing value of the signal of the cap detection sensor.

[0179] The control unit (13) can control the output unit (40) based on the result detected by the sensor unit (19). For example, when the number of puffs counted through the puff sensor (192) reaches a preset number, the control unit (13) can notify the user that the aerosol generating device (1) will soon be terminated through at least one of the display unit (41), the haptic unit (42), and the sound output unit (43). For example, the control unit (13) can notify the user through the output unit (40) based on a determination that a stick is not present in the insertion space. For example, the control unit (13) can notify the user through the output unit (40) based on a determination that a cartridge and / or a cap is not mounted. For example, the control unit (13) can transmit information about the temperature of the cartridge heater (15) and / or the stick heater (15) to the user through the output unit (40).

[0180] The control unit (13) can store and update the history of events that have occurred in the memory (60) based on the occurrence of a predetermined event. The event may include operations such as detection of insertion of a stick, initiation of heating of the stick, detection of puff, termination of puff, detection of overheating of the cartridge heater (15) and / or the stick heater (15), detection of overvoltage application to the cartridge heater (15) and / or the stick heater (15), termination of heating of the stick, power on / off of the aerosol generating device (1), initiation of charging of the battery (12), detection of overcharge of the battery (12), termination of charging of the battery (12), etc. performed in the aerosol generating device (1). The history of the event may include the date and time when the event occurred, log data corresponding to the event, etc. For example, when the predetermined event is detection of insertion of a stick, the log data corresponding to the event may include data on the sensing value of the insertion detection sensor (193), etc. For example, if a given event is overheating detection of a cartridge heater (15) and / or a stick heater (15), log data corresponding to the event may include data on the temperature of the cartridge heater (15) and / or the stick heater (15), the voltage applied to the cartridge heater (15) and / or the stick heater (15), the current flowing through the cartridge heater (15) and / or the stick heater (15), etc.

[0181] The control unit (13) can control to form a communication link with an external device, such as a user's mobile terminal. When data regarding authentication is received from the external device through the communication link, the control unit (13) can release the restriction on the use of at least one function of the aerosol generating device (1). Here, the data regarding authentication can include data indicating completion of user authentication for a user corresponding to the external device. The user can perform user authentication through the external device. The external device can determine whether user data is valid based on the user's birthday, a unique number representing the user, etc., and can receive data regarding the use authorization of the aerosol generating device (1) from an external server. The external device can transmit data indicating completion of user authentication to the aerosol generating device (1) based on the data regarding the use authorization. When the user authentication is completed, the control unit (13) can release the restriction on the use of at least one function of the aerosol generating device (1). For example, the control unit (13) can release the restriction on the use of the heating function that supplies power to the stick heater (15) when user authentication is completed.

[0182] The control unit (13) can transmit data on the status of the aerosol generating device (1) to the external device via a communication link formed with the external device. Based on the received status data, the external device can output the remaining capacity of the battery (12) of the aerosol generating device (1), the operation mode, etc. through the display of the external device.

[0183] An external device may transmit a location search request to the aerosol generating device (1) based on an input that initiates location search of the aerosol generating device (1). When receiving a location search request from the external device, the control unit (13) may control at least one of the output devices to perform an operation corresponding to the location search based on the received location search request. For example, in response to the location search request, the haptic unit (42) may generate vibration. For example, in response to the location search request, the display unit (41) may output an object corresponding to the location search and the end of the search.

[0184] The control unit (13) can control to perform a firmware update when receiving firmware data from an external device. The external device can check the current version of the firmware of the aerosol generating device (1) and determine whether a new version of the firmware exists. When an input requesting firmware download is received, the external device can receive a new version of the firmware data and transmit the new version of the firmware data to the aerosol generating device (1). The control unit (13) can control to perform a firmware update of the aerosol generating device (1) upon receiving a new version of the firmware data.

[0185] The control unit (13) can transmit data on the sensing value of at least one sensor unit (19) to an external server (not shown) through the communication unit (50), and receive and store a learning model generated by learning the sensing value through machine learning such as deep learning from the server. The control unit (13) can perform an operation of determining a user's inhalation pattern, an operation of generating a temperature profile, etc. using the learning model received from the server. The control unit (13) can store, in the memory (60), the sensing value data of at least one sensor unit (19) and data for learning an artificial neural network (ANN). For example, the memory (60) can store a database for each component provided in the aerosol generating device (1) for learning an artificial neural network (ANN), and weights and biases forming an artificial neural network (ANN) structure. The control unit (13) can learn data on the sensing values ​​of at least one sensor unit (19), the user's suction pattern, the temperature profile, etc., stored in the memory (60), and generate at least one learning model used for determining the user's suction pattern, generating the temperature profile, etc.

[0186] Any or all of the embodiments of the present disclosure described above are not mutually exclusive or distinct. Any or all of the embodiments of the present disclosure described above may have their respective components or functions combined or used together.

[0187] For example, it means that a configuration A described in a particular embodiment and / or drawing can be combined with a configuration B described in another embodiment and / or drawing. That is, even if a combination between configurations is not directly described, it means that a combination is possible, except in cases where a combination is described as impossible.

[0188] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. A housing including a receiving space for receiving an aerosol generating article; and A heater is located inside the housing and heats an aerosol generating article accommodated in the accommodation space when power is supplied; The above heater, A polyimide film arranged to surround an aerosol generating article accommodated in the above-mentioned accommodation space; A conductive pattern disposed on the polyimide film and generating heat when power is supplied; and An aerosol generating device comprising a sensing pad arranged so as not to overlap with the conductive pattern and configured to detect the electrostatic capacitance of the receiving space.

2. In paragraph 1, The above heater, An inner sheet placed on one area of ​​the polyimide film while the polyimide film is unfolded; and Further comprising an outer sheet disposed in another area of ​​the polyimide film spaced apart from the inner sheet while the polyimide film is unfolded; An aerosol generating device wherein the conductive pattern is arranged in an area between the inner sheet and the outer sheet of the polyimide film when the polyimide film is unfolded.

3. In paragraph 2, An aerosol generating device wherein the sensing pad is disposed on the inner sheet or the outer sheet.

4. In paragraph 3, When the polyimide film in the above-described unfolded state is rolled, the heater becomes a columnar shape with a cross-section of a circle or an ellipse so as to surround the outer surface of the aerosol generating article, An aerosol generating device, wherein the conductive pattern and the sensing pad are disposed between the inner sheet and the outer sheet while the polyimide film is wound.

5. In paragraph 1, The above heater, Further comprising a protective sheet surrounding the outer circumference of the polyimide film and protecting the polyimide film; An aerosol generating device, wherein the sensing pad is positioned on the protective sheet so as not to overlap with the conductive pattern.

6. In paragraph 1, An aerosol generating device further comprising a processor electrically connected to the sensing pad.

7. In paragraph 6, A printed circuit board disposed inside the housing, wherein the processor is disposed at least in one region; and Further comprising an electrical connecting member electrically connecting the heater and the printed circuit board; An aerosol generating device, wherein the processor is electrically connected to the sensing pad through the electrical connecting member.

8. In paragraph 6, The above processor, An aerosol generating device that detects whether an aerosol generating article is received in the receiving space based on the electrostatic capacitance value of the receiving space detected through the sensing pad.

9. In paragraph 6, The above processor, An aerosol generating device that detects whether an aerosol generating article accommodated in the accommodation space is over-humidified based on the electrostatic capacitance value of the accommodation space detected through the sensing pad.

10. In paragraph 9, The above processor An aerosol generating device that controls the power supplied to the heater based on whether the aerosol generating article accommodated in the accommodation space is in an over-humidified state.

11. In paragraph 6, The above sensing pad, first sensing pad; and A second sensing pad is included that is spaced apart from the first sensing pad, The above processor, An aerosol generating device that detects whether an aerosol generating article is received in the receiving space based on a difference between a capacitance value of the receiving space detected through the first sensing pad and a capacitance value of the receiving space detected through the second sensing pad.

12. In paragraph 1, An upper fixing member located inside the housing and for fixing one end of the heater; and An aerosol generating device further comprising a lower fixing member positioned inside the housing and for fixing the other end of the heater located in the opposite direction to the one end.

13. In paragraph 12, An aerosol generating device further comprising an insulating member arranged to surround the outer surface of the heater and block heat generated from the heater from being transferred to the housing.

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