Aerosol-generating apparatus

Abstract

Disclosed is an aerosol-generating apparatus. The aerosol-generating apparatus of the present disclosure comprises: a body; a hollow heater which is disposed in the body, provides an insertion space with one open side, and has an electrically conductive track therein; a circuit board disposed in the body; and leads disposed on one side of the heater and connecting the electrically conductive track to the circuit board, wherein the temperature coefficient of resistance (TCR) of the leads may be 6-10 ppm / °C.

Description

Aerosol generator

[0001] The present disclosure relates to an aerosol generating device.

[0002] An aerosol generator is designed to extract a specific component from a medium or substance through an aerosol. The medium may contain various components. The components contained in the medium may include various flavoring substances. For example, the components contained in the medium may include nicotine, herbal ingredients, and / or coffee ingredients. Recently, extensive research has been conducted on such aerosol generators.

[0003] In aerosol generators using a resistive heater, when temperature is sensed through changes in heater resistance without a separate temperature sensor, the resistance changes in the leads connecting the heater and the driving circuit can act as noise. If the resistance changes in the leads are significant, the heater temperature cannot be accurately measured. If the heater temperature is measured inaccurately, the heating temperature cannot be accurately controlled. This can lead to variations in the amount of vapor or flavor, resulting in lower user satisfaction.

[0004] The present disclosure aims to solve the above-mentioned and other problems.

[0005] Another purpose may be to provide an aerosol generating device in which the temperature coefficient of resistance of the leads of the heater is much smaller than the temperature coefficient of resistance of the electrically conductive tracks.

[0006] Another purpose may be to provide an aerosol generator in which the resistance of the leads of the heater is much smaller than the resistance of the electrically conductive tracks.

[0007] Another object may be to provide an aerosol generating device having a long and wide heating track arranged on the outer side of each heating track of an electrically conductive track.

[0008] According to one aspect of the present disclosure for achieving the above-described object, there is provided an aerosol generating device comprising: a body; a hollow heater mounted on the body, providing an insertion space with one side opened, and having an electrically conductive track therein; a circuit board connected to the electrically conductive track; and a lead disposed on one side of the heater and connecting the electrically conductive track and the circuit board, wherein a temperature coefficient of resistance (TCR) of the lead may be 6 to 10 ppm / ℃.

[0009] According to at least one embodiment of the present disclosure, the temperature coefficient of resistance of the lead of the resistance-heating heater is much smaller than the temperature coefficient of resistance of the electrically conductive track, so that the temperature of the heater can be accurately determined based on the resistance value of the heater.

[0010] According to at least one embodiment of the present disclosure, the resistance value of the lead of the resistance-heating heater is much smaller than the resistance value of the electrically conductive track, thereby reducing heat generated in the lead and increasing the heating efficiency of the heater.

[0011] According to at least one embodiment of the present disclosure, the resistance value of the lead of the resistance-heating heater is much smaller than the resistance value of the electrically conductive track, thereby preventing the device from being heated in a part other than the heater.

[0012] According to at least one embodiment of the present disclosure, the heating track arranged on the outer side of each heating track of the electrically conductive track has a long length and a wide width structure, so that the heating temperature deviation of each part of the hollow heater can be reduced, and a stick inserted into the heater can be evenly heated.

[0013] Further scope of the applicability of the present disclosure will become apparent from the detailed description below. However, since various modifications and variations within the spirit and scope of the present disclosure will be apparent to those skilled in the art, it should be understood that the detailed description and specific examples, such as preferred embodiments of the present disclosure, are given by way of example only.

[0014] FIG. 1 and FIG. 2 are drawings illustrating an aerosol generating device according to embodiments of the present disclosure.

[0015] FIG. 3 is a drawing illustrating a stick according to one embodiment of the present disclosure.

[0016] FIG. 4 is a front perspective view of a heater assembly according to one embodiment of the present disclosure.

[0017] FIG. 5 is an exploded perspective view of a heater assembly according to one embodiment of the present disclosure.

[0018] FIG. 6 is a drawing illustrating a susceptor of a heater assembly according to one embodiment of the present disclosure.

[0019] FIGS. 7 and 8 are drawings illustrating a bracket of a heater assembly according to one embodiment of the present disclosure.

[0020] FIG. 9 is a drawing illustrating an electrically conductive track of a heater assembly according to one embodiment of the present disclosure.

[0021] FIG. 10 is an enlarged perspective view of a portion of an electrically conductive track of a heater assembly according to one embodiment of the present disclosure.

[0022] FIG. 11 illustrates a circuit diagram for measuring heater resistance of an aerosol generating device according to one embodiment of the present disclosure.

[0023] Fig. 12 is a graph illustrating a change in resistance value according to temperature of a heater assembly according to one embodiment of the present disclosure.

[0024] FIG. 13 is a graph illustrating changes in the resistance ratio of an electrically conductive track and a lead according to heating of a heater assembly according to one embodiment of the present disclosure.

[0025] Figure 14 is a block diagram of an aerosol generating device according to one embodiment of the present disclosure.

[0026] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components are assigned the same reference numerals, and redundant descriptions thereof will be omitted.

[0027] The suffixes "module" and "part" used for components in the following description may be assigned or used interchangeably solely for the convenience of writing the specification. "Module" and "part" do not, by themselves, have distinct meanings or roles.

[0028] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of 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 understanding of the embodiments disclosed in this specification, and the technical concepts disclosed in this specification are not limited by the attached drawings. It should be understood that the attached drawings include all modifications, equivalents, and substitutes included within the spirit and technical scope of the present disclosure.

[0029] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components. However, these components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0030] 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, although it should be understood 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.

[0031] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0032] Throughout this specification, the direction of the aerosol generator (1) can be defined based on the orthogonal coordinate system. In the orthogonal coordinate system, the x-axis direction can be defined as the left-right direction of the aerosol generator (1). The y-axis direction can be defined as the front-back direction of the aerosol generator (1). The z-axis direction can be defined as the up-down direction of the aerosol generator (1).

[0033]

[0034] Figures 1 and 2 illustrate an aerosol generating device (1) according to embodiments of the present disclosure.

[0035] Referring to FIGS. 1 and 2, an aerosol generating device (1) according to one embodiment may include at least one of a power source (11), a control unit (12), a sensor (13), and a heater (18). At least one of the power source (11), the control unit (12), the sensor (13), and the heater (18) may be disposed inside a body (10) of the aerosol generating device. The body (10) may provide a space opened upwardly so that a stick (S), which is an aerosol generating article, may be inserted. The space opened upwardly may be referred to as an insertion space (43). The insertion space (43) may be formed by being recessed toward the inside of the body (10) by a predetermined depth so that at least a portion of the stick (S) can be inserted. The depth of the insertion space (43) may correspond to the length of a region of the stick (S) containing an aerosol generating material and / or medium. The lower end of the stick (S) is inserted into the inside of the body (10), and the upper end of the stick (S) can protrude outside the body (10). The user can inhale air by putting the upper end of the stick (S) exposed to the outside in his / her mouth.

[0036] The heater (18) can heat the stick (S). The heater (18) can extend upwardly around the space where the stick (S) is inserted. For example, the heater (18) can be in the form of a tube having a hollow space therein. The heater (18) can be arranged around the insertion space (43). The heater (18) can be arranged to surround at least a portion of the insertion space (43). The heater (18) can heat the insertion space (43) or the stick (S) inserted into the insertion space (43). The heater (18) can include an electrical resistance heater and / or an induction heater.

[0037] For example, referring to FIG. 1, the heater (18) may be a resistive heater. For example, the heater (18) may include an electrically conductive track, and the heater (18) may be heated as current flows through the electrically conductive track. The heater (18) may be electrically connected to a power source (11). The heater (18) may be directly heated by receiving current from the power source (11).

[0038] For example, referring to FIG. 2, the aerosol generating device may include an induction coil (181) surrounding a heater (18). The induction coil (181) may heat the heater (18). The heater (18) may be heated by a magnetic field generated by an AC current flowing through the induction coil (181). The magnetic field may penetrate the heater (18) and generate an eddy current within the heater (18). The current may generate heat in the heater (18).

[0039] Meanwhile, a susceptor may be included inside the stick (S), and the susceptor inside the stick (S) may be heated by a magnetic field generated by an AC current flowing through the induction coil (181).

[0040] The power source (11) can supply power to the components of the aerosol generator to operate. The power source (11) can be referred to as a battery. The power source (11) can supply power to at least one of the control unit (12), the sensor (13), and the heater (18). When the aerosol generator (1) includes an induction coil (181), the power source (11) can supply power to the induction coil (181).

[0041] The control unit (12) can control the overall operation of the aerosol generator. The control unit (12) can be mounted on a printed circuit board. The control unit (12) can control the operation of at least one of the power supply (11) and the sensor (13). The control unit (12) can control the operation of a display, motor, etc. installed in the aerosol generator. The control unit (12) can check the status of each component of the aerosol generator to determine whether the aerosol generator is in an operable state.

[0042] The control unit (12) can analyze the results detected by the sensor (13) and control the processes to be performed thereafter. For example, the control unit (12) can control the power supplied to the heater (18) so that the operation of the heater (18) is started or ended based on the results detected by the sensor (13). For example, the control unit (12) can control the amount of power supplied to the heater (18) and the time for which the power is supplied so that the heater (18) can be heated to a predetermined temperature or maintained at an appropriate temperature based on the results detected by the sensor (13).

[0043] The sensor (13) may include at least one of a temperature sensor, a puff sensor, and an insertion detection sensor. For example, the sensor (13) may sense at least one of the temperature of the heater (18), the temperature of the power source (11), and the temperature inside and outside the body (10). For example, the sensor (13) may sense the user's puff. For example, the sensor (13) may sense whether the stick (S) is inserted into the insertion space (43).

[0044]

[0045] FIG. 3 is a drawing illustrating a stick according to one embodiment of the present disclosure.

[0046] Referring to FIG. 3, the stick (S) may include an aerosol carrier (510). The stick (S) may include a medium carrier (520). The aerosol carrier (510) and the medium carrier (520) may be referred to as a tobacco rod. The stick (S) may include a cooling carrier (530). The stick (S) may include a filter carrier (540). The stick (S) may include a wrapper (550) surrounding the aerosol carrier (510), the medium carrier (520), the cooling carrier (530), and / or the filter carrier (540). In FIG. 3, the wrapper (550) may include an individual wrapper that surrounds the aerosol carrier (510), the medium portion (520), and the filter portion (540), respectively, and / or an outer shell that encloses the aerosol carrier (510), the medium portion (520), and the filter portion (540) as one, surrounded by individual wrappers.

[0047] The aerosol base (510) may be a portion formed into a predetermined shape by incorporating a moisturizer into pulp-based paper. The moisturizer (base) included in the aerosol base (510) may include propylene glycol, glycerin, or the like. For example, the moisturizer of the aerosol base (510) may include propylene glycol and glycerin at a certain weight ratio relative to the weight of the original paper. When the stick (S) is inserted into the aerosol generating device (1) and heated to a temperature above a certain level by the heater (18), moisturizer vapor may be generated from the aerosol base (510).

[0048] The medium (520) may include one or more of a sheet, a strand, or a tobacco sheet cut into small pieces. The medium (520) may be a part that generates nicotine to provide a smoking experience to a user. When the temperature of the medium included in the medium (520) rises to a temperature above a certain level, nicotine vapor may be generated from the medium (520). When the stick (S) is inserted into the aerosol generating device (1), at least a portion of the aerosol base (510) and at least a portion of the medium (520) may face the heater (18). For example, an upper or downstream portion of the aerosol base (510) and a lower or upstream portion of the medium (520) may face the heater (18).

[0049] The length of the portion of the medium portion (520) facing the heater (18) may be longer than the length of the portion of the aerosol carrier portion (510) facing the heater (18). The length of the portion of the aerosol carrier portion (510) facing the heater (18) may be more than half of the total length of the aerosol carrier portion (510). The length of the portion of the medium portion (520) facing the heater (18) may be more than half of the total length of the medium portion (520).

[0050] The portion of the aerosol base portion (510) and the medium portion (520) facing the heater (18) can be heated by the heater (18). At least a portion of the aerosol base portion (510) containing the moisturizer is heated by the heater (18), thereby generating moisturizer vapor. At least a portion of the medium portion (520) containing the medium is heated by the heater (18), thereby generating nicotine vapor. By arranging the stick (S) so that the length ratios of a portion of the aerosol base portion (510) facing the heater (18) and a portion of the medium portion (520) are different, the ratio of the generated moisturizer vapor and nicotine vapor can be appropriately controlled.

[0051] In one embodiment, the medium portion (520) may not be directly heated by the heater (18) even when the stick (S) is inserted into the aerosol generating device (1). The medium portion (520) may be indirectly heated by conduction, convection, and radiation from the aerosol carrier portion (510) and the medium portion wrapper (or wrappers) surrounding the medium portion (520). The temperature of the medium portion (520) may also be increased indirectly after the aerosol carrier portion (510) is heated by the heater (18).

[0052] The cooling unit (530) may be manufactured as a tube filter containing a predetermined weight of a plasticizer. The moisturizer vapor and nicotine vapor generated from the aerosol base unit (510) and the medium unit (520) may be mixed with each other to form an aerosol, and may be cooled while passing through the cooling unit (530). In one embodiment, unlike the aerosol base unit (510), the medium unit (520), and the filter unit (540), the cooling unit (530) may not be wrapped with an individual wrapper.

[0053] The filter unit (540) may be a cellulose acetate filter. Meanwhile, there is no limitation on the shape of the filter unit (540). The filter unit (540) may be a cylindrical rod or a tube type having a hollow interior. For example, when the filter unit (540) is composed of a plurality of segments, at least one of the segments may be manufactured to have a different shape. The filter unit (540) may also be manufactured to generate a flavor. For example, a flavoring agent may be sprayed onto the filter unit (540), or a separate fiber coated with a flavoring agent may be inserted into the interior of the filter unit (540).

[0054] Additionally, the filter unit (540) may include at least one capsule. Here, the capsule may also perform a function of generating a flavor. For example, the capsule may be a structure that encases a liquid containing a flavoring agent in a film, and may have a spherical or cylindrical shape, but is not limited thereto.

[0055]

[0056] FIG. 4 is a front perspective view of a heater assembly according to one embodiment of the present disclosure, FIG. 5 is an exploded perspective view of a heater assembly according to one embodiment of the present disclosure, FIG. 6 is a drawing illustrating a susceptor of a heater assembly according to one embodiment of the present disclosure, and FIGS. 7 and 8 are drawings illustrating a bracket of a heater assembly according to one embodiment of the present disclosure.

[0057]

[0058] Referring to FIG. 4, the heater (18) may include a heater assembly (30). The heater assembly (30) may be elongated. The heater assembly (30) may have a tubular shape or a cylindrical shape including a hollow portion therein. The heater assembly (30) may be disposed within the body (10) of the aerosol generator (1). The heater assembly (30) may surround an insertion space (43, see FIGS. 1 and 2). The heater assembly (30) may provide the insertion space (43). The insertion space (43) or a stick (S) inserted into the insertion space (43) may be heated by the heater assembly (30). The heater assembly (30) may have a lead (70) that protrudes outward and is electrically connected to the power source (11).

[0059] The heater (18) may include a pair of brackets (91, 92). The pair of brackets (91, 92) may be coupled to the top and bottom of the heater assembly (30), respectively. The pair of brackets (91, 92) may be coupled to the heater assembly (30) to support the heater assembly (30).

[0060]

[0061] Referring to FIG. 5, the heater assembly (30) may include a susceptor (50), an electrically conductive track (60), and a lead (70).

[0062] The susceptor (50) may have a cylindrical shape. The susceptor (50) may be positioned inside the electrically conductive track (60). The susceptor (50) may surround at least a portion of the insertion space (43). The susceptor (50) may be referred to as a heat transfer body, a heat conducting portion, a heat spreading portion, or a pipe. The susceptor (50) may be made of, but is not limited to, stainless steel, aluminum, or an alloy.

[0063] The electrically conductive track (60) may have a cylindrical shape. The electrically conductive track (60) may be arranged on the outside of the susceptor (50). The electrically conductive track (60) may surround at least a portion of the susceptor (50). The electrically conductive track (60) may be formed by etching a metal thin film with a laser. The electrically conductive track (60) may receive power from a power source (11) and generate heat. The electrically conductive track (60) may be referred to as a heat generating unit. The electrically conductive track (60) may be made of, but is not limited to, stainless steel, copper, aluminum, or an alloy.

[0064] An insulator (not shown) may be placed on one side of the electrically conductive track (60). The insulator is placed on the inside and / or outside of the electrically conductive track (60) and may have a cylindrical shape. The insulator may form at least one layer. The insulator may cover the electrically conductive track (60). In the longitudinal direction of the insertion space (43), the insulator may extend further upward and downward than the electrically conductive track (60).

[0065] The insulator may be formed of a material having flexibility and heat resistance. The insulator may include, but is not limited to, polyimide or polyetheretherketone (PEEK), and may include other materials having elasticity, heat resistance, and electrical insulation properties.

[0066] The lead (70) may be connected to the electrically conductive track (60). The lead (70) may be extended and protrude from one side of the electrically conductive track (60). The lead (70) may protrude downwardly from an insulator extending downwardly from the electrically conductive track (60). The lead (70) may be exposed from the insulator. The lead (70) may be electrically connected to the electrically conductive track (60) and the circuit board (200, see FIG. 11). Features related to the electrically conductive track (60) and the lead (70) will be described in detail with reference to FIGS. 9 to 13.

[0067] The heater assembly (30) can be coupled with brackets (91, 92). The first bracket (91) can be attached or coupled to the upper side of the heater assembly (30) corresponding to the opening of the insertion space (43). The second bracket (92) can be attached or coupled to the lower side of the heater assembly (30).

[0068] A stick detection sensor (133) may be disposed in the heater assembly (30). The stick detection sensor (133) may detect insertion and / or removal of the stick (S). The stick detection sensor (133) may be disposed to surround at least a portion of the lower side of the heater assembly (30). In the longitudinal direction of the insertion space (43), the stick detection sensor (133) may be disposed below the susceptor (50) and the electrically conductive track (60). The stick detection sensor (133) may be disposed to contact a portion of an insulator extending downwardly from the electrically conductive track (60) and surround a portion of an outer edge of the insulator. In the longitudinal direction of the insertion space (43), the stick detection sensor (133) may be spaced apart from the susceptor (50) and the electrically conductive track (60).

[0069] Accordingly, heat transferred to the sensor (133) by the susceptor (50) and the electrically conductive track (60) can be minimized. In addition, the accuracy of stick (S) detection by the sensor (133) can be increased.

[0070]

[0071] Referring to FIG. 6, the susceptor (50) may have a cylindrical shape. The width (W1) of the susceptor (50) defined in the longitudinal direction of the insertion space (43) may be 10 mm to 20 mm. Preferably, the width (W1) of the susceptor (50) may be 12.5 mm to 17.5 mm. The susceptor (50) may have a cylindrical shape and a diameter (D1) of 7 mm to 8 mm. The thickness of the susceptor (50) defined in the radial direction of the insertion space (43) may be 0.01 to 0.03 mm.

[0072] In the circumferential direction of the susceptor (50) or the circumferential direction of the insertion space (43), one end (51) of the susceptor (50) may be spaced apart from the other end (52) of the susceptor (50). A gap (G1) may be formed between the one end (51) and the other end (52) of the susceptor. The width of the gap (G1) may be 0.5 mm or less. As the width of the gap (G1) increases, the area of ​​the portion of the stick (S) that is not heated by the gap (G1) may increase. Therefore, 0.5 mm may correspond to the maximum width at which the aerosol generated from the stick (S) is greater than or equal to a set minimum amount.

[0073] Accordingly, during the process of manufacturing the susceptor (50) or the process of heating or cooling the susceptor (50), it is possible to prevent the shape of the susceptor (50) from being distorted or parts of the susceptor (50) from overlapping each other.

[0074]

[0075] Referring to FIGS. 7 and 8, the heater assembly (30) can be coupled with brackets (91, 92). The first bracket (91) can be attached or coupled to the upper side of the heater assembly (30) corresponding to the opening of the insertion space (43). The first bracket (91) can include a first bracket body (911), a first flange (912), an insertion hole (913), and an alignment groove (914).

[0076] The first bracket body (911) may have a cylindrical shape. The outer diameter (D2) of the first bracket body (911) may be equal to or larger than the diameter of the upper portion of the heater assembly (30). The first bracket body (911) may extend in the circumferential direction. The first bracket body (911) may be attached to or press-fitted to the upper portion of the heater assembly (30). The first flange (912) may protrude radially outward from the upper end of the first bracket body (911). The first flange (912) may extend in the circumferential direction. The first flange (912) may surround the upper end of the first bracket body (911). The insertion hole (913) may be formed to vertically penetrate the central portion of the first bracket (91). The boundary between the first flange (912) and the first bracket body (911) may have a convexly bent shape from the inner surface of the first bracket body (911) to the upper surface of the first flange (912). The alignment groove (914) may be formed by recessing one side of the flange (912) in a radially inward direction. The alignment groove (914) may have a shape corresponding to a protrusion provided in the body (10). The alignment groove (914) may be coupled to the protrusion provided in the body (10). The heater assembly (30) may be prevented from rotating in the body (10) by the alignment groove (914), and the heater assembly (30) may be stably coupled to the body (10). The first bracket (91) may be made of, but is not limited to, stainless steel, aluminum, polyetheretherketone (PEEK), or an alloy.

[0077] The second bracket (92) may be attached or coupled to the lower side of the heater assembly (30). The second bracket (92) may include a second bracket body (921), a second flange (922), and a first hole (924).

[0078] The second bracket body (921) may have a cylindrical shape. The outer diameter of the second bracket body (921) may be equal to or larger than the diameter of the lower portion of the heater assembly (30), and the inner diameter (D3) of the second bracket body (921) may be smaller than the diameter of the lower portion of the heater assembly (30). The second bracket body (921) may extend in the circumferential direction. The second bracket body (921) may be attached to or press-fitted to the lower portion of the heater assembly (30). The second flange (922) may protrude radially outward from the lower end of the second bracket body (921). The second flange (922) may extend in the circumferential direction. The second flange (922) may surround the lower end of the second bracket body (921). The first hole (924) can be formed to penetrate the central portion of the second bracket (92) upwardly and downwardly.

[0079] The first bracket (91) and the second bracket (92) can support the upper and lower portions of the heater assembly (30), respectively. The upper portion of the heater assembly (30) can be fixed or supported by the first bracket (91). The lower portion of the heater assembly (30) can be fixed or supported by the second bracket (92).

[0080] Accordingly, both ends of the heater assembly (30) including the susceptor (50) and the electrically conductive track (60) can be stably fixed, thereby ensuring the rigidity of the heater assembly (30).

[0081] A second hole (925) may be formed in the second bracket (922) that is spaced apart from the first hole (924) and passes through the second bracket body (921) and the second flange (922). When the second bracket (92) is coupled to the lower end of the heater assembly (30), the lead (70) may pass through the second hole (925) of the second bracket (92), and one end of the lead (70) may protrude toward the lower side of the second bracket (92). One end of the protruding lead (70) may be connected to a power source (11) or a circuit board (200) through a wire or a bridge, or the like.

[0082]

[0083] FIG. 9 is a drawing illustrating an electrically conductive track of a heater assembly according to one embodiment of the present disclosure, and FIG. 10 is an enlarged perspective view of a portion of the electrically conductive track along AA of FIG. 9.

[0084]

[0085] Referring to Fig. 9, the electrically conductive track (60) may have a cylindrical shape. The electrically conductive track (60) may receive power from a power source (11) and generate heat. The heat generated from the electrically conductive track (60) may heat the medium and / or moisturizer of the stick (S) inserted into the insertion space (43), thereby generating an aerosol. The electrically conductive track (60) may generate heat at a temperature below a set temperature. For example, the electrically conductive track (60) may generate heat at a temperature below 270 degrees.

[0086] When the electrically conductive track (60) is unfolded, the electrically conductive track (60) can be extended in one direction. The electrically conductive track (60) can be a rectangle with a length (L2) greater than a width (W2). The length (L2) of the electrically conductive track (60) can be 18 mm to 28 mm, and the width (W2) of the electrically conductive track (60) can be 10 mm to 20 mm. Preferably, the length (L2) of the electrically conductive track (60) can be 20.5 mm to 25.5 mm, and the width (W2) of the electrically conductive track (60) can be 12.5 mm to 17.5 mm. The thickness (T2) of the electrically conductive track (60) can be 0.03 mm to 0.05 mm.

[0087] The electrically conductive track (60) may include a heating track (61) and a connecting portion (62). The heating track (61) may include at least one track (61a, 61b, 61c). The first track (61a) may be arranged at the outermost end of the electrically conductive track (60) and may be rectangular overall. The second track (61b) may be arranged inside the first track (61a), and the third track (61c) may be arranged inside the second track (61b).

[0088] The first to third tracks (61a, 61b, 61c) include at least one bent portion and may have a meandering shape. The number of bent portions of the first track (61a) may be less than the number of bent portions of the second track (61b). The number of bent portions of the second track (61b) may be less than the number of bent portions of the third track (61c). The first to third tracks (61a, 61b, 61c) may be spaced apart from each other. The first to third tracks (61a, 61b, 61c) may have one end connected to each other and the other end connected to each other. In other words, the first to third tracks (61a, 61b, 61c) may be connected in parallel to each other.

[0089] The width (Wa) of the first track (61a) may be 0.5 mm to 0.7 mm. The width (Wb) of the second track (61b) may be 0.6 mm to 0.8 mm. The width (Wc) of the third track (61c) may be 0.65 mm to 0.85 mm. The gap (G2) between the second track (61b) and the first track (61a) or the third track (61c) may be 0.3 mm to 0.4 mm.

[0090] The width (Wa) of the first track (61a) may be less than or equal to the width (Wb) of the second track (61b). The width (Wb) of the second track (61b) may be less than or equal to the width (Wc) of the third track (61c).

[0091] The length of the first track (61a) may be less than or equal to the length of the second track (61b). The length of the second track (61b) may be less than or equal to the length of the third track (61c).

[0092] The gap (G2) between the second track (61b) and the first track (61a) or the third track (61c) may be smaller than the width (Wa) of the first track (61a), the width (Wb) of the second track (61b), and the width (Wc) of the third track (61c).

[0093] Accordingly, in the electrically conductive track (60), the resistance deviation of the first track (61a) arranged on the outside and the second track (61b) and third track (61c) arranged on the inside can be reduced, and the deviation of the amount of heat generated in each track can be reduced.

[0094] In addition, since the spacing between the tracks is relatively narrower than the width of the tracks, the heating area of ​​the electrically conductive track (60) can be increased, and the insertion space (43) or the stick (S) inserted into the insertion space (43) can be evenly heated by the electrically conductive track (60).

[0095] The connecting portion (62) may protrude outward from one side of the heating track (61). The connecting portion (62) may be formed integrally with the heating track (61). The connecting portion (62) may be exposed from an insulator covering the electrically conductive track (60). The connecting portion (62) may include a first connecting portion (62a) and a second connecting portion (62b). The first connecting portion (62a) may be connected to one end of the first to third tracks (61a, 61b, 61c), and the second connecting portion (62b) may be connected to the other end of the first to third tracks (61a, 61b, 61c).

[0096] The lead (70) can be connected to the electrically conductive track (60). The lead (70) can be connected to the connecting portion (62). The lead (70) can be extended in a long direction in which the connecting portion (62) protrudes. The lead (70) can electrically connect the electrically conductive track (60) to the power source (11) or the circuit board (200). The lead (70) can include a first lead (70a) in contact with the first connecting portion (62a) and a second lead (70b) in contact with the second connecting portion (62b). Power can be supplied to the electrically conductive track (60) through the first lead (70a) and the second lead (70b). The lead (70) can be attached to the connecting portion (62) by welding. However, the method of attaching the lead (70) to the connecting portion (62) is not limited thereto.

[0097]

[0098] Referring to Fig. 10, the lead (70) may be plate-shaped. The lead (70) has a predetermined thickness and may extend flatly in the direction in which the connecting portion (62) extends.

[0099] Even if they have the same volume and / or length, heating characteristics may vary depending on the shape of the lead. When the electrically conductive track (60) generates heat, the temperature change of the lead (70) may be smaller when the lead (70) is a flat plate shape than when it is cylindrical. Accordingly, when the heater operates, heating of parts other than the heater caused by the lead (70) can be minimized.

[0100] The lead (70) may have a width (W3) and a length (L3) greater than the thickness (T3). The lead (70) may protrude downwardly from the second bracket (92) through the second bracket (92) coupled to the lower side of the heater assembly (30). The lead (70) may protrude downwardly from the second bracket (92) by penetrating through the second hole (925) of the second bracket (92).

[0101] The length (L3) of the lead (70) may be shorter than the length of each heating track (61a, 61b, 61c) of the electrically conductive track (60). The width (W3) of the lead (70) may be greater than or equal to the width (Wa, Wb, Wc) of each heating track (61a, 61b, 61c) of the electrically conductive track (60). The thickness (T3) of the lead (70) may be greater than the thickness (T2) of the heating track (61a, 61b, 61c) or the connecting portion (62).

[0102] The ratio of the length of the heating track (61a, 61b, 61c) to the length (L3) of the lead (70) may be 20:1 to 25:1. The ratio of the width (Wa, Wb, Wc) of the heating track (61a, 61b, 61c) to the width (W3) of the lead (70) may be 1:1 to 1:1.3. The ratio of the thickness (T2) of the heating track (61a, 61b, 61c) or the connecting portion (62) to the thickness (T3) of the lead (70) may be 1:8 to 1:12.

[0103] For example, the length of each heating track (61a, 61b, 61c) may be 90 to 110 mm, and the length (L3) of the lead (70) may be 4 to 5 mm. The width (Wa, Wb, Wc) of each heating track (61a, 61b, 61c) may be 0.5 to 0.9 mm, and the width (W3) of the lead (70) may be 0.7 to 0.9 mm. The thickness (T2) of the electrically conductive track (60) or each heating track (61a, 61b, 61c) may be 0.03 to 0.05 mm, and the thickness (T3) of the lead (70) may be 0.3 to 0.5 mm.

[0104] The lead (70) may have a resistance value lower than that of the electrically conductive track (60). Within the temperature range at which the electrically conductive track (60) is heated, the lead (70) may have a resistance value lower than that of the electrically conductive track (60).

[0105] The electrically conductive track (60) can be heated or generated to a temperature below a set temperature. For example, the electrically conductive track (60) can be heated or generated to a temperature below 270 degrees Celsius. By heating or generating the electrically conductive track (60) to a temperature below 270 degrees Celsius, an aerosol can be generated without burning the stick (S) accommodated in the insertion space (43).

[0106] At a temperature of 270 degrees or less, the ratio of the resistance of the electrically conductive track (60) to the resistance of the lead (70) may be 90:1 to 110:1. For example, at a temperature of 270 degrees or less, the electrically conductive track (60) may have a resistance of 0.9 to 1.4 ohms. At a temperature of 270 degrees or less, the lead (70) may have a resistance of 0.008 to 0.012 ohms.

[0107] Since the resistance value of the lead is much smaller than the resistance value of the electrically conductive track, the heat generated from the lead can be reduced and the heating efficiency of the heater can be increased.

[0108] Additionally, since the resistance of the lead is much smaller than the resistance of the electrically conductive track, the device can be prevented from being heated in areas other than the heater.

[0109]

[0110] FIG. 11 illustrates a circuit diagram for measuring heater resistance of an aerosol generator according to one embodiment of the present disclosure, FIG. 12 is a graph illustrating a change in resistance value according to heating of a heater assembly according to one embodiment of the present disclosure, and FIG. 13 is a graph illustrating a change in resistance ratio of an electrically conductive track and a lead according to heating of a heater assembly according to one embodiment of the present disclosure.

[0111]

[0112] Referring to Fig. 11, the resistance measurement sensor (131) may be configured as a sensor that detects the resistance value (Rh) of the heater (18). Here, the resistance value (Rh) of the heater (18) may be defined as the sum of the resistance value (Rt) of the electrically conductive track (60) and the resistance value (Rl) of the lead (70). The resistance measurement sensor may be referred to as a temperature sensor. The resistance measurement sensor (131) may output a signal corresponding to the resistance value (Rh) of the heater (18).

[0113] The resistance measurement sensor (131) can be electrically connected to the heater (18). The heater driving circuit (200) can supply power to the heater (18) using power stored in the power source (11). The heater driving circuit can be referred to as a circuit board. The power supplied to the heater (18) through the heater driving circuit (200) can be controlled according to the control of the control unit (12).

[0114] The control unit (12) can control the power supplied to the heater (18) based on the temperature of the heater (18). The control unit (12) determines the temperature of the heater (18) based on the resistance value (Rh) of the heater (18), and can control the power supplied to the heater (18) within at least one heating section of the heating profile based on the determined temperature of the heater (18).

[0115] The circuit board (200) can transmit electrical signals to control the operation of various components. Circuit patterns for transmitting electrical signals can be formed on the circuit board (200). The circuit board (200) can be electrically connected to a power source (11) and a control unit (12). The control unit (12) can be mounted on the circuit board (200).

[0116] The same level of current can flow through the heater (18) and the resistance measurement sensor (131). The resistance value (Rs) of the shunt resistor provided in the resistance measurement sensor (131) may be a value that does not vary depending on the temperature.

[0117] The control unit (12) can determine the voltage (Vc) applied to the heater (18) and the resistance measurement sensor (131) based on the power supplied to the heater (18) from the heater driving circuit (200), the current flowing through the heater (18) and the resistance measurement sensor (131), etc. The control unit (12) can calculate the voltage (Vd) applied to the shunt resistor based on the current flowing through the shunt resistor of the resistance measurement sensor (131) and the resistance value (Rs) of the shunt resistor. The control unit (12) can calculate the difference (Vc-Vd) between the voltage (Vc) applied to the heater (18) and the resistance measurement sensor (131) and the voltage (Vd) applied to the shunt resistor as the voltage applied to the heater (18). The control unit (12) can calculate the resistance value (Rh) of the heater (18) based on the voltage applied to the heater (18) and the current flowing through the heater (18).

[0118] The resistance of the heater (18) may be a material having a temperature coefficient of resistance, and the resistance value (Rh) of the heater (18) may vary depending on the temperature of the resistor. The control unit (12) may calculate the temperature of the heater (18) corresponding to the temperature coefficient of resistance of the heater (18), the resistance value (Rh) of the heater (18), and the resistance value of the heater (18) at a reference temperature, based on a calculation formula for calculating the temperature of the heater (18). Here, the calculation formula for calculating the temperature of the heater (18) may correspond to the following mathematical formula 1.

[0119]

[0120] In the above mathematical expression 1, TCR may be the temperature coefficient of resistance of the heater (18), T1 may be the temperature of the heater (18), R1 may be the resistance value of the heater (18), T0 may be the reference temperature, and R0 may be the resistance value of the heater (18) at the reference temperature. Here, T0 may be 25 degrees, and R0 may be the resistance value of the heater (18) at 25 degrees.

[0121] The resistance value of the heater (18) at the reference temperature may be different for each aerosol generator (1). Taking this into consideration, data on the resistance value of the heater (18), etc. may be stored in the memory (17, see FIG. 14) of the aerosol generator (1). The control unit (12) may determine the resistance value (R0) of the heater (18) at the reference temperature (T0) used in the calculation formula for calculating the temperature of the heater (18), based on the data stored in the memory (17).

[0122] In the drawing, a resistance measurement sensor (131) connected in series to a heater (18) is described as an example, but the present invention is not limited thereto, and the resistance measurement sensor (131) may be implemented as a voltage sensor that detects the voltage applied to the heater (18).

[0123] The resistance value (Rh) of the heater (18) measured by the resistance measurement sensor (131) may be the sum of the resistance value (Rt) of the electrically conductive track (60) and the resistance value (Rl) of the lead (70). When the control unit (12) controls the heating temperature of the heater (18) based on the resistance value (Rh) of the heater (18), a change in the resistance value (Rl) and / or the resistance value (Rl) of the lead (70) may act as noise.

[0124] In one embodiment of the heater assembly (30) of the present disclosure, the lead (70) may include a material having a much lower temperature coefficient of resistance than the electrically conductive track (60).

[0125] The lead (70) may have a temperature coefficient of resistance in the range of 6 to 10 ppm / ℃. Preferably, the lead (70) may have a temperature coefficient of resistance in the range of 7 to 9 ppm / ℃.

[0126] For example, the lead (70) may include an alloy containing nickel and copper. The lead (70) may include an alloy having a weight ratio of nickel and copper of 40:60 to 50:50. Preferably, the lead (70) may include an alloy having a weight ratio of nickel of 45 and a weight ratio of copper of 55. When the weight ratio of nickel is less than 40 and the weight ratio of copper is greater than 60, the temperature coefficient of resistance of the lead (70) may be greater than 10 ppm / °C. When the weight ratio of nickel is greater than 50 and the weight ratio of copper is less than 50, the temperature coefficient of resistance of the lead (70) may be greater than 10 ppm / °C. By including an alloy having a weight ratio of nickel and copper of 40:60 to 50:50, the temperature coefficient of resistance may be less than 10 ppm / °C.

[0127] The lead (70) may include constantan. The lead (70) may be formed of constantan. As shown in Table 1 below, constantan has a temperature coefficient of resistance of approximately 8 ppm / ℃. Constantan has a very small temperature coefficient of resistance compared to electrically conductive materials such as copper and SUS316 used in the electrically conductive track (60). However, the material forming the lead (70) is not limited thereto, and may be another material having a temperature coefficient of resistance in the range of 6 to 10 ppm / ℃ as described above.

[0128] Copper SUS316 Constantan TCR (ppm / ℃) 39009208

[0129] The electrically conductive track (60) may include copper or SUS316. The electrically conductive track (60) may be formed of copper or SUS316. The electrically conductive track (60) may have a temperature coefficient of resistance of 500 ppm / ℃ or more. When the electrically conductive track (60) has a temperature coefficient of resistance that is small below a certain level, the change in the resistance value (Rt) according to the temperature change of the electrically conductive track (60) is small, and thus, it may be inaccurate to calculate or determine the temperature of the electrically conductive track (60) based on the resistance value (Rt) of the electrically conductive track (60). When the electrically conductive track (60) has a resistance temperature coefficient that is greater than a certain level, the increase in the resistance value (Rt) according to the increase in the temperature of the electrically conductive track (60) is large, so that the power required to heat the electrically conductive track (60) increases and the heating efficiency may deteriorate. The ratio of the resistance temperature coefficients of the electrically conductive track (60) and the lead (70) may be 100:1 to 500:1. When the resistance temperature coefficient of the electrically conductive track (60) is less than 100 times the resistance temperature coefficient of the lead (70), the degree to which the resistance value (Rl) of the lead (70) changes as the heater generates heat may be unnecessarily large. Therefore, the temperature of the heater (18) calculated or determined based on the resistance value (Rh) of the heater (18) may be inaccurate.

[0130] When the temperature coefficient of resistance of the electrically conductive track (60) is more than 500 times that of the lead (70), the degree to which the resistance value (Rt) of the electrically conductive track (60) changes as the heater generates heat may be unnecessarily large. Accordingly, the power required to heat the electrically conductive track (60) may increase, and the heating efficiency may deteriorate.

[0131]

[0132] Referring to FIG. 12, as power is applied to the heater (18), the electrically conductive track (60) and the lead (70) may generate heat or be heated. When the electrically conductive track (60) and the lead (70) generate heat or are heated from the first time (Ta) to the second time (Tb), the resistance value (Rt) of the electrically conductive track (60) may increase from the first value (Rt1) to the second value (Rt2), and the resistance value (Rl) of the lead (70) may increase from the third value (Rl1) to the fourth value (Rl2).

[0133] For example, the electrically conductive track (60) can be heated or generated from room temperature or 25 degrees to 270 degrees. At this time, during the same time (Tb-Ta), the change in the resistance value (delta RT) of the electrically conductive track (60) can be greater than the change in the resistance value (delta RL) of the lead (70). The change in the resistance value (delta RT) of the electrically conductive track (60) can be derived by multiplying the resistance value (Rt) of the electrically conductive track (60), the increased temperature, and the resistance temperature coefficient. The change in the resistance value (delta RL) of the lead (70) can be derived by multiplying the resistance value (Rl) of the lead (70), the increased temperature, and the resistance temperature coefficient. Since the resistance value (Rt) of the electrically conductive track (60) is greater than the resistance value (Rl) of the lead (70), and the resistance temperature coefficient of the electrically conductive track (60) is greater than the resistance temperature coefficient of the lead (70), the change in the resistance value (delta RT) of the electrically conductive track (60) may be greater than the change in the resistance value (delta RL) of the lead (70).

[0134]

[0135] Referring to FIG. 13, when the electrically conductive track (60) and the lead (70) are heated or generated from the first time (Ta) to the second time (Tb), the ratio (Rl / RT) of the resistance value (Rl) of the lead (70) to the resistance value (Rt) of the electrically conductive track (60) may decrease. As described with respect to FIG. 12, when the electrically conductive track (60) and the lead (70) are heated or generated, the resistance value (Rt) of the electrically conductive track (60) increases to a greater extent than the resistance value (Rl) of the lead (70). Therefore, the ratio (Rl / Rt) of the resistance value (Rl) of the lead (70) to the resistance value (Rt) of the electrically conductive track (60) may decrease.

[0136] The heating temperature control of the heater (18) can be performed around the set temperature while the heater (18) is heated to a high temperature up to the set temperature. As the temperature of the heater (18) increases, the ratio (Rl / RT) of the resistance value (Rl) of the lead (70) to the resistance value (Rt) of the electrically conductive track (60) decreases, so the temperature of the heater (18) can be accurately calculated or determined based on the resistance value (Rh) of the heater (18) in a high temperature region.

[0137]

[0138] Fig. 14 is a block diagram of an aerosol generating device (1) according to one embodiment of the present disclosure.

[0139] The aerosol generator (1) may include a power source (11), a control unit (12), a sensor (13), an output unit (14), an input unit (15), a communication unit (16), a memory (17), and at least one heater (18, 24). However, the internal structure of the aerosol generator (1) is not limited to that illustrated in Fig. 14. 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 generator (1), some of the components illustrated in Fig. 14 may be omitted or new components may be added.

[0140] The sensor (13) can detect the status of the aerosol generator (1) or the status around the aerosol generator (1) and transmit the detected information to the control unit (12). Based on the detected information, the control unit (12) can control the aerosol generator (1) so that various functions such as controlling the operation of the cartridge heater (24) and / or heater (18), restricting smoking, determining whether a stick (S) and / or cartridge (19) is inserted, and displaying a notification are performed.

[0141] The sensor (13) may include at least one of a temperature sensor (131), a puff sensor (132), an insertion detection sensor (133), a reuse detection sensor (134), a motion detection sensor (137), and a humidity sensor (138).

[0142] The temperature sensor (131) can detect the temperature at which the cartridge heater (24) and / or the heater (18) is heated. The aerosol generator (1) may include a separate temperature sensor that detects the temperature of the cartridge heater (24) and / or the heater (18), or the cartridge heater (24) and / or the heater (18) itself may serve as a temperature sensor.

[0143] The temperature sensor (131) can output a signal corresponding to the temperature of the cartridge heater (24) and / or the heater (18). For example, the temperature sensor (131) can include a resistance element whose resistance value changes in response to a change in the temperature of the cartridge heater (24) and / or the heater (18). 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 (131) can output a signal corresponding to the resistance value of the resistance element as a signal corresponding to the temperature of the cartridge heater (24) and / or the heater (18). For example, the temperature sensor (131) can be configured as a sensor that detects the resistance value of the cartridge heater (24) and / or the heater (18). At this time, the temperature sensor (131) can output a signal corresponding to the resistance value of the cartridge heater (24) and / or the heater (18) as a signal corresponding to the temperature of the cartridge heater (24) and / or the heater (18).

[0144] A temperature sensor (131) may be placed around the power source (11) to monitor the temperature of the power source (11). The temperature sensor (131) may be placed adjacent to the power source (11). For example, the temperature sensor (131) may be attached to one side of a battery, which is the power source (11). For example, the temperature sensor (131) may be mounted on one side of a printed circuit board.

[0145] A temperature sensor (131) is placed inside the body (10) and can detect the internal temperature of the body (10).

[0146] The puff sensor (132) can detect the user's puff based on various physical changes in the airflow path. The puff sensor (132) can output a signal corresponding to the puff. For example, the puff sensor (132) can be a pressure sensor. The puff sensor (132) 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 (132) can be arranged in correspondence to the airflow path through which the gas flows in the aerosol generating device (1).

[0147] The stick detection sensor (133) can detect insertion and / or removal of the stick (S). The stick detection sensor may be referred to as an insertion detection sensor. The insertion detection sensor (133) can detect a signal change according to the insertion and / or removal of the stick (S). The insertion detection sensor (133) may be installed around the insertion space. The insertion detection sensor (133) can detect the insertion and / or removal of the stick (S) according to a change in permittivity within the insertion space. For example, the insertion detection sensor (133) may be an inductive sensor and / or a capacitance sensor.

[0148] An inductive sensor may include at least one coil. The coil of the inductive sensor may be positioned adjacent to an insertion space. For example, when a magnetic field changes around a current-flowing 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.

[0149] 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.

[0150] 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, for example, the electrostatic capacitance around the conductor. For example, when a stick (S) including a wrapper made of a metallic material is inserted into the insertion space, the electromagnetic properties around the conductor may be changed by the wrapper of the stick (S).

[0151] A reuse detection sensor (134) can detect whether the stick (S) has been reused. The reuse detection sensor (134) may be a color sensor. The color sensor can detect the color of the stick (S). The color sensor can detect the color of a portion of a wrapper that wraps the outside of the stick (S). 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.

[0152] At least some of the wrappers constituting the stick (S) may change color due to the aerosol. The reuse detection sensor (134) may be positioned corresponding to a position where at least some of the wrappers whose color changes due to the aerosol are disposed when the stick (S) is inserted into the insertion space. For example, before the stick (S) 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 (S), 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.

[0153] A motion detection sensor (137) can detect the movement of the aerosol generating device. The motion detection sensor (137) can be implemented with at least one of an acceleration sensor and a gyro sensor.

[0154] The humidity sensor (138) can detect the humidity of the aerosol generator and / or the cartridge. The humidity sensor (138) can detect the humidity of the outside air and / or the humidity inside the cartridge. The humidity sensor (138) can be implemented by a capacitive sensor, etc. The humidity sensor (138) can be placed on the outside of the body (10) or located on a path through which outside air flows in, and can measure the humidity around the aerosol generator (1). The humidity sensor (138) can be located in the storage unit (C1) of the cartridge (19), and can measure the humidity inside the cartridge (19).

[0155] In addition to the sensors (131 to 138) described above, the sensor (13) may further include at least one of a barometric 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.

[0156] The output unit (14) can output information on the status of the aerosol generator (1) and provide it to the user. The output unit (14) may include at least one of a display (141), a haptic unit (142), and an audio output unit (143), but is not limited thereto. When the display (141) and the touch pad form a layered structure to form a touch screen, the display (141) can be used as an input device in addition to an output device.

[0157] The display (141) can visually provide information about the aerosol generator (1) to the user. For example, the information about the aerosol generator (1) may refer to various information such as the charging / discharging status of the power supply (11) of the aerosol generator (1), the preheating status of the heater (18), the insertion / removal status of the stick (S) and / or cartridge (19), the mounting / removal status of the upper case, or the status in which the use of the aerosol generator (1) is restricted (e.g., detection of an abnormal item), and the display (141) can output the above information to the outside. For example, the display (141) may be in the form of an LED light-emitting element. For example, the display (141) may be a liquid crystal display panel (LCD), an organic light-emitting display panel (OLED), etc.

[0158] The haptic unit (142) can provide tactile information about the aerosol generator (1) to the user by converting an electrical signal into a mechanical stimulus or an electrical stimulus. For example, the haptic unit (142) can generate a vibration corresponding to the completion of the initial preheating when the initial power is supplied to the cartridge heater (24) and / or heater (18) for a set period of time. The haptic unit (142) can include a vibration motor, a piezoelectric element, or an electrical stimulation device.

[0159] The acoustic output unit (143) can provide information about the aerosol generator (1) to the user audibly. For example, the acoustic output unit (143) can convert an electrical signal into an acoustic signal and output it to the outside.

[0160] The power source (11) can supply power used to operate the aerosol generator (1). The power source (11) can supply power so that the cartridge heater (24) and / or the heater (18) can be heated. In addition, the power source (11) can supply power required for the operation of other components provided in the aerosol generator (1), such as a sensor (13), an output unit (14), an input unit (15), a communication unit (16), and a memory (17). The power source (11) can be a rechargeable battery or a disposable battery. For example, the power source (11) can be a lithium polymer (LiPoly) battery, but is not limited thereto.

[0161] Although not shown in FIG. 14, the aerosol generator (1) may further include a power protection circuit. The power protection circuit may be electrically connected to the power source (11) and include a switching element.

[0162] The power protection circuit can block the power supply (11) according to certain conditions. For example, the power protection circuit can block the power supply (11) when the voltage level of the power supply (11) is higher than a first voltage corresponding to overcharge. For example, the power protection circuit can block the power supply (11) when the voltage level of the power supply (11) is lower than a second voltage corresponding to overdischarge.

[0163] The heater (18) can receive power from the power source (11) and heat the medium or aerosol generating material within the stick (S). Although not illustrated in FIG. 14, the aerosol generating device (1) may further include a power conversion circuit (e.g., a DC / DC converter) that converts the power of the power source (11) and supplies it to the cartridge heater (24) and / or the heater (18). 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 power source (11) into alternating current power.

[0164] The control unit (12), sensor (13), output unit (14), input unit (15), communication unit (16), and memory (17) can receive power from the power source (11) and perform their functions. Although not illustrated in FIG. 14, the device may further include a power conversion circuit, such as an LDO (low dropout) circuit or a voltage regulator circuit, that converts the power of the power source (11) and supplies it to each component. In addition, although not illustrated in FIG. 14, a noise filter may be provided between the power source (11) and the heater (18). 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 power source (11) to the heater (18). The low pass filter can prevent high frequency noise components from being applied to a sensor (13), such as an insertion detection sensor (133).

[0165] In one embodiment, the cartridge heater (24) and / or heater (18) 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. Additionally, the heater (18) 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.

[0166] In another embodiment, the heater (18) may be an induction heater. For example, the heater (18) may include a susceptor that heats the aerosol generating material by generating heat through a magnetic field applied by a coil.

[0167] The input unit (15) can receive information input from a user or output information to the user. For example, the input unit (15) 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.

[0168] The display (141) and the touch panel may be implemented as a single panel. For example, the touch panel may be inserted into the display (141) (on-cell type or in-cell type). For example, the touch panel may be added-on to the display panel (141).

[0169] Meanwhile, the input unit (15) may include, but is not limited to, buttons, key pads, dome switches, jog wheels, jog switches, etc.

[0170] The memory (17) is hardware that stores various data processed in the aerosol generator (1), and can store data processed and data to be processed in the control unit (12). The memory (17) 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 (17) may store data on the operation time of the aerosol generator (1), the maximum number of puffs, the current number of puffs, at least one temperature profile, and a user's smoking pattern.

[0171] The communication unit (16) may include at least one component for communication with another electronic device. For example, the communication unit (16) may include at least one of a short-range communication unit and a wireless communication unit.

[0172] 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.

[0173] 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.

[0174] Although not shown in FIG. 14, the aerosol generator (1) further includes a connection interface such as a USB (universal serial bus) interface, and can transmit and receive information or charge a power source (11) by connecting to another external device through a connection interface such as a USB interface.

[0175] The control unit (12) can control the overall operation of the aerosol generator (1). In one embodiment, the control unit (12) 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.

[0176] The control unit (12) can control the temperature of the heater (18) by controlling the supply of power from the power source (11) to the heater (18). The control unit (12) can control the temperature of the cartridge heater (24) and / or the heater (18) based on the temperature of the cartridge heater (24) and / or the heater (18) sensed by the temperature sensor (131). The control unit (12) can adjust the power supplied to the cartridge heater (24) and / or the heater (18) based on the temperature of the cartridge heater (24) and / or the heater (18). For example, the control unit (12) can determine a target temperature for the cartridge heater (24) and / or the heater (18) based on a temperature profile stored in the memory (17).

[0177] The aerosol generator (1) may include a power supply circuit (not shown) electrically connected to the power supply (11) between the power supply (11) and the cartridge heater (24) and / or the heater (18). The power supply circuit may be electrically connected to the cartridge heater (24), the heater (18), 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 (12) may control the power supply circuit.

[0178] The control unit (12) 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 power source (11) 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.

[0179] The control unit (12) can turn on the switching element so that power is supplied from the power source (11) to the cartridge heater (24) and / or the heater (18). The control unit (12) can turn off the switching element so that power is cut off to the cartridge heater (24) and / or the heater (18). The control unit (12) can control the current supplied from the power source (11) by controlling the frequency and / or duty ratio of the current pulse input to the switching element.

[0180] The control unit (12) can control the voltage output from the power source (11) by controlling the switching of the switching element of the power supply circuit. The power conversion circuit can convert the voltage output from the power source (11). For example, the power conversion circuit can include a buck converter that steps down the voltage output from the power source (11). For example, the power conversion circuit can be implemented using a buck-boost converter, a zener diode, etc.

[0181] The control unit (12) 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 power source (11). 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 power source (11). 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 heater (18) can be heated based on the voltage output from the power conversion circuit.

[0182] The control unit (12) can control power to be supplied to the heater (18) using at least one of the pulse width modulation (PWM) method and the proportional-integral-differential (PID) method.

[0183] For example, the control unit (12) can control a current pulse having a predetermined frequency and duty ratio to be supplied to the heater (18) using the PWM method. The control unit (12) can control the power supplied to the heater (18) by adjusting the frequency and duty ratio of the current pulse.

[0184] For example, the control unit (12) can determine a target temperature that is the target of control based on a temperature profile. The control unit (12) can control the power supplied to the heater (18) by using the PID method, which is a feedback control method using a difference value between the temperature of the heater (18) 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.

[0185] The control unit (12) can prevent the cartridge heater (24) and / or the heater (18) from overheating. For example, the control unit (12) can control the operation of the power conversion circuit so that the supply of power to the cartridge heater (24) and / or the heater (18) is cut off based on the temperature of the cartridge heater (24) and / or the heater (18) exceeding a preset limit temperature. For example, the control unit (12) can reduce the amount of power supplied to the cartridge heater (24) and / or the heater (18) by a certain percentage based on the temperature of the cartridge heater (24) and / or the heater (18) exceeding a preset limit temperature. For example, the control unit (12) can determine that the aerosol generating substance contained in the cartridge (19) is exhausted based on the temperature of the cartridge heater (24) exceeding the limit temperature, and can cut off the supply of power to the cartridge heater (24).

[0186] The control unit (12) can control the charging and discharging of the power source (11). The control unit (12) can check the temperature of the power source (11) based on the output signal of the temperature sensor (131).

[0187] When a power line is connected to the battery terminal of the aerosol generator (1), the control unit (12) can check whether the temperature of the power source (11) is higher than or equal to the first limit temperature, which is a standard for blocking charging of the power source (11). If the temperature of the power source (11) is lower than the first limit temperature, the control unit (12) can control the power source (11) to be charged based on a preset charging current. If the temperature of the power source (11) is higher than or equal to the first limit temperature, the control unit (12) can block charging of the power source (11).

[0188] When the power of the aerosol generator (1) is turned on, the control unit (12) can check whether the temperature of the power source (11) is higher than or equal to the second limit temperature, which is a standard for blocking discharge of the power source (11). If the temperature of the power source (11) is lower than the second limit temperature, the control unit (12) can control to use the power stored in the power source (11). If the temperature of the power source (11) is higher than or equal to the second limit temperature, the control unit (12) can stop using the power stored in the power source (11).

[0189] The control unit (12) can calculate the remaining capacity of the power stored in the power source (11). For example, the control unit (12) can calculate the remaining capacity of the power source (11) based on the voltage and / or current sensing values ​​of the power source (11).

[0190] The control unit (12) can determine whether a stick (S) is inserted into the insertion space through the insertion detection sensor (133). The control unit (12) can determine that the stick (S) is inserted based on the output signal of the insertion detection sensor (133). If it is determined that the stick (S) is inserted into the insertion space, the control unit (12) can control to supply power to the cartridge heater (24) and / or the heater (18). For example, the control unit (12) can supply power to the cartridge heater (24) and / or the heater (18) based on the temperature profile stored in the memory (17).

[0191] The control unit (12) can determine whether the stick (S) is removed from the insertion space. For example, the control unit (12) can determine whether the stick (S) is removed from the insertion space through the insertion detection sensor (133). For example, the control unit (12) can determine that the stick (S) is removed from the insertion space when the temperature of the heater (18) is higher than a limited temperature or when the temperature change slope of the heater (18) is higher than a set slope. When it is determined that the stick (S) is removed from the insertion space, the control unit (12) can cut off the power supply to the cartridge heater (24) and / or the heater (18).

[0192] The control unit (12) can control the power supply time and / or power supply amount to the heater (18) according to the state of the stick (S) detected by the sensor (13). The control unit (12) can check the level range that includes the level of the signal of the capacitance sensor based on a lookup table. The control unit (12) can determine the moisture content of the stick (S) according to the checked level range.

[0193] When the stick (S) is in an over-humidified state, the control unit (12) can control the power supply time to the heater (18) to increase the preheating time of the stick (S) compared to the normal state.

[0194] The control unit (12) can determine whether the stick (S) inserted into the insertion space has been reused through the reuse detection sensor (134). For example, the control unit (12) can compare the sensing value of the 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 (S) has not been used. For example, the control unit (12) can compare the sensing value of the 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 (S) has been used. If it is determined that the stick (S) has been used, the control unit (12) can cut off the supply of power to the cartridge heater (24) and / or the heater (18).

[0195] The control unit (12) can determine whether the aerosol generating material of the cartridge (19) is exhausted. For example, the control unit (12) can preheat the cartridge heater (24) and / or the heater (18) by applying power, and determine whether the temperature of the cartridge heater (24) exceeds a limited temperature during the preheating period. If the temperature of the cartridge heater (24) exceeds the limited temperature, the control unit (12) can determine that the aerosol generating material of the cartridge (19) is exhausted. If the control unit (12) determines that the aerosol generating material of the cartridge (19) is exhausted, the control unit (12) can cut off the supply of power to the cartridge heater (24) and / or the heater (18).

[0196] The control unit (12) can make a judgment regarding the user's inhalation through the puff sensor (132). For example, the control unit (12) 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 (12) can determine the intensity of the puff based on the sensing value of the signal of the puff sensor (132). 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 (12) can cut off the supply of power to the cartridge heater (24) and / or heater (18).

[0197] The control unit (12) can control the output unit (14) based on the result detected by the sensor (13). For example, when the number of puffs counted through the puff sensor (132) reaches a preset number, the control unit (12) can notify the user that the aerosol generator (1) will soon be terminated through at least one of the display (141), the haptic unit (142), and the sound output unit (143). For example, the control unit (12) can notify the user through the output unit (14) based on the determination that the stick (S) does not exist in the insertion space. For example, the control unit (12) can notify the user through the output unit (14) based on the determination that the cartridge (19) and / or the upper case is not mounted. For example, the control unit (12) can transmit information about the temperature of the cartridge heater (24) and / or the heater (18) to the user through the output unit (14).

[0198] The control unit (12) can store and update the history of the event that occurred in the memory (17) based on the occurrence of a predetermined event. The event may include operations such as detection of insertion of the stick (S), initiation of heating of the stick (S), detection of puff, termination of puff, detection of overheating of the cartridge heater (24) and / or heater (18), detection of overvoltage application to the cartridge heater (24) and / or heater (18), termination of heating of the stick (S), power on / off of the aerosol generator (1), initiation of charging of the power supply (11), detection of overcharge of the power supply (11), termination of charging of the power supply (11), etc. performed in the aerosol generator (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 the stick (S), the log data corresponding to the event may include data on the sensing value of the insertion detection sensor (133), etc. For example, if a given event is overheating detection of the cartridge heater (24) and / or heater (18), log data corresponding to the event may include data on the temperature of the cartridge heater (24) and / or heater (18), the voltage applied to the cartridge heater (24) and / or heater (18), the current flowing through the cartridge heater (24) and / or heater (18), etc.

[0199] The control unit (12) 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 (12) can release the restriction on the use of at least one function of the aerosol generator (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 authority of the aerosol generator (1) from an external server. The external device can transmit data indicating completion of user authentication to the aerosol generator (1) based on the data regarding the use authority. When the user authentication is completed, the control unit (12) can release the restriction on the use of at least one function of the aerosol generator (1). For example, the control unit (12) can release the restriction on the use of the heating function that supplies power to the heater (18) when user authentication is completed.

[0200] The control unit (12) can transmit data on the status of the aerosol generator (1) to an 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 power supply (11) of the aerosol generator (1), the operation mode, etc. through the display of the external device.

[0201] An external device may transmit a location search request to the aerosol generator (1) based on an input that initiates location search of the aerosol generator (1). When receiving a location search request from the external device, the control unit (12) 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 (142) may generate vibration. For example, in response to the location search request, the display (141) may output an object corresponding to the location search and the end of the search.

[0202] The control unit (12) 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 generator (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 generator (1). The control unit (12) can control to perform a firmware update of the aerosol generator (1) upon receiving a new version of the firmware data.

[0203] The control unit (12) can transmit data on the sensing value of at least one sensor (13) to an external server (not shown) through the communication unit (16), 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 (12) 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 (12) can store, in the memory (17), the sensing value data of at least one sensor (13) and data for learning an artificial neural network (ANN). For example, the memory (17) can store a database for each component provided in the aerosol generating device (1) for learning the artificial neural network (ANN), and weights and biases forming the artificial neural network (ANN) structure. The control unit (12) can learn data on the sensing values ​​of at least one sensor (13), the user's suction pattern, the temperature profile, etc., stored in the memory (17), and generate at least one learning model used for determining the user's suction pattern, generating the temperature profile, etc.

[0204]

[0205] As described above, according to at least one of the embodiments of the present disclosure, the temperature coefficient of resistance of the lead of the resistance-heating heater is much smaller than the temperature coefficient of resistance of the electrically conductive track, so that the temperature of the heater can be accurately determined based on the resistance value of the heater.

[0206] According to at least one embodiment of the present disclosure, the resistance value of the lead of the resistance-heating heater is much smaller than the resistance value of the electrically conductive track, thereby reducing heat generated in the lead and increasing the heating efficiency of the heater.

[0207] According to at least one embodiment of the present disclosure, the resistance value of the lead of the resistance-heating heater is much smaller than the resistance value of the electrically conductive track, thereby preventing the device from being heated in a part other than the heater.

[0208] According to at least one embodiment of the present disclosure, the heating track arranged on the outer side of each heating track of the electrically conductive track has a long length and a wide width structure, so that the heating temperature deviation of each part of the hollow heater can be reduced, and a stick inserted into the heater can be evenly heated.

[0209]

[0210] Referring to FIGS. 1 to 14, an aerosol generating device (1) according to one aspect of the present disclosure includes: a body (10); a hollow heater (18) disposed in the body (10), providing an insertion space (43) with one side open and having an electrically conductive track (60) therein; a circuit board (200) disposed in the body (10); and a lead (70) disposed on one side of the heater (18) and connected to the electrically conductive track (60) and the circuit board (200). A temperature coefficient of resistance (TCR) of the lead (70) may be 6 to 10 ppm / ℃.

[0211] In addition, according to another aspect of the present disclosure, the lead (70) includes an alloy containing nickel and copper, and the alloy may have a weight ratio of nickel and copper of 40:60 to 50:50.

[0212] Additionally, according to another aspect of the present disclosure, the lead (70) may include constantan.

[0213] Additionally, according to another aspect of the present disclosure, the electrically conductive track (60) can be heated to a temperature of 270 degrees or less.

[0214] Additionally, according to another aspect of the present disclosure, the resistance value of the electrically conductive track (60) may be 0.9 to 1.4 ohms at a temperature of 270 degrees or less.

[0215] Additionally, according to another aspect of the present disclosure, the resistance value of the lead (70) may be 0.008 to 0.012 ohm at a temperature of 270 degrees or less.

[0216] Additionally, according to another aspect of the present disclosure, at a temperature of 270 degrees or less, the ratio of the resistance value of the electrically conductive track (60) to the resistance value of the lead (70) may be 90:1 to 110:1.

[0217] Additionally, according to another aspect of the present disclosure, the ratio of the temperature coefficient of resistance of the electrically conductive track (60) to the temperature coefficient of resistance of the lead (70) may be 100:1 to 500:1.

[0218] Additionally, according to another aspect of the present disclosure, the lead (70) may have a flat plate shape.

[0219] In addition, according to another aspect of the present disclosure, the electrically conductive track (60) includes at least one heating track (61a, 61b, 61c), and the length of the at least one heating track (61a, 61b, 61c) may be longer than the length of the lead (70), and the width of the at least one heating track (61a, 61b, 61c) may be smaller than the width of the lead (70).

[0220] Additionally, according to another aspect of the present disclosure, the length of the at least one heating track (61a, 61b, 61c) may be 90 to 110 mm, and the width may be 0.5 to 0.9 mm.

[0221] Additionally, according to another aspect of the present disclosure, the length of the lead (70) may be 4 to 5 mm, and the width may be 0.7 to 0.9 mm.

[0222] In addition, according to another aspect of the present disclosure, at least one heating track (61a, 61b, 61c) includes a first track (61a) arranged on the outside of an electrically conductive track (60); a second track (61b) arranged inside the first track (61a) and having at least one bent portion formed therein; and a third track (61c) arranged inside the second track (61b) and having at least one bent portion formed therein; wherein a width (Wb) of the second track (61b) may be greater than or equal to a width (Wa) of the first track (61a) and less than or equal to a width (Wc) of the third track (61c).

[0223] In addition, according to another aspect of the present disclosure, the gap (G2) by which the second track (61b) is spaced from the first track (61a) or the third track (61c) may be smaller than any one of the width (Wa) of the first track (61a), the width (Wb) of the second track (61b), and the width (Wc) of the third track (61c).

[0224] In addition, according to another aspect of the present disclosure, the electrically conductive track (60) includes a connecting portion (62) including a first connecting portion (62a) connected to one end of the first to third tracks (61a, 61b, 61c); and a second connecting portion (62b) connected to the other end of the first to third tracks (61a, 61b, 61c), and the lead (70) can connect the connecting portion (62) and the circuit board (200).

[0225]

[0226] 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.

[0227] 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.

[0228] 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. Body; A hollow heater disposed in the above body, providing an insertion space with one side opened, and having an electrically conductive track inside; A circuit board arranged on the above body; A lead disposed at one end of the heater and connected to the electrically conductive track and the circuit board; The temperature coefficient of resistance (TCR) of the above lead is An aerosol generating device having a concentration of 6 to 10 ppm / ℃.

2. In paragraph 1, The above lead is, Contains an alloy containing nickel and copper, The above alloy is, An aerosol generator having a weight ratio of nickel and copper of 40:60 to 50:

50.

3. In paragraph 1, The above lead is, An aerosol generating device comprising constantan.

4. In paragraph 1, The above electrically conductive track is, An aerosol generator that generates heat at a temperature of less than 270 degrees.

5. In paragraph 4, The resistance value of the above electrically conductive track is, An aerosol generating device having a temperature of 0.9 to 1.4 ohms at a temperature of 270 degrees or less.

6. In paragraph 4, The resistance value of the above lead is An aerosol generating device having a pressure of 0.008 to 0.012 ohms at a temperature of 270 degrees or less.

7. In paragraph 4, At a temperature below 270 degrees, the ratio of the resistance value of the electrically conductive track to the resistance value of the lead is An aerosol generator having a ratio of 90:1 to 110:

1.

8. In paragraph 4, The ratio of the temperature coefficient of resistance of the above electrically conductive track and the temperature coefficient of resistance of the lead is An aerosol generator having a ratio of 100:1 to 500:

1.

9. In paragraph 1, The above lead is, An aerosol generator having a flat plate shape.

10. In paragraph 1, The above electrically conductive track is, Contains at least one fever track, The length of said at least one heating track is longer than the length of said lead, An aerosol generating device wherein the width of at least one of the heating tracks is smaller than the width of the lead.

11. In paragraph 10, An aerosol generating device wherein the length of at least one heating track is 90 to 110 mm and the width is 0.5 to 0.9 mm.

12. In paragraph 10, An aerosol generating device wherein the length of the lead is 4 to 5 mm and the width is 0.7 to 0.9 mm.

13. In paragraph 10, At least one fever track, A first track arranged on the periphery of the electrically conductive track; A second track disposed inside the first track and having at least one bent portion formed therein; and a third track disposed inside the second track and having at least one bent portion formed therein; The width of the above second track is An aerosol generating device having a width greater than or equal to the width of the first track and less than or equal to the width of the third track.

14. In paragraph 13, The distance between the second track and the first track or the third track is An aerosol generating device having a width smaller than any one of the width of the first track, the width of the second track, and the width of the third track.

15. In paragraph 13, The above electrically conductive track is, A connecting portion including a first connecting portion connected to one end of the first to third tracks; and a second connecting portion connected to the other end of the first to third tracks, The above lead is, An aerosol generating device connecting the above connecting portion and the circuit board.

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