Method for manufacturing heater assembly for aerosol-generating device

Abstract

A method for manufacturing a heater assembly for an aerosol-generating device is disclosed. The method for manufacturing a heater assembly for an aerosol-generating device, of the present disclosure, comprises the steps of: preparing one elongated sheet; arranging a susceptor and an electrically conductive track on the sheet; and rolling, on a main roller, the sheet on which the susceptor and the electrically conductive track are arranged, wherein the rolling step can include a step of sequentially passing the sheet through the space formed between the main roller and each of a plurality of sub-rollers adjacent to the main roller, thereby rolling the sheet on the outer circumferential surface of the main roller.

Description

Method for manufacturing a heater assembly for an aerosol generator

[0001] The present disclosure relates to a method for manufacturing a heater assembly for 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 be flavoring substances of various components. 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] External cylindrical heaters that contain and heat aerosol-generating substances inside typically use insulators such as polyimide films. When aerosol generators are used in various environments, such as high temperature and high humidity, problems arise where the heater's film insulator swells, or where portions of the film insulator lift off or peel off from the heating element.

[0004] In addition, in the case of an external heater having a structure in which the film insulation is rolled multiple times, there is a problem in that each layer is not firmly pressed and some layers are lifted during the production process of the heater.

[0005] The present disclosure aims to solve the above-mentioned and other problems.

[0006] Another object may be to provide a method for manufacturing a heater assembly that wraps a sheet around a main roller by sequentially passing the sheet through a space formed by each of a main roller and a plurality of sub-rollers.

[0007] Another object may be to provide a method for manufacturing a heater assembly that heats a sheet by a main roller and heats and pressurizes the sheet by a sub roller.

[0008] Another object may be to provide a method for manufacturing a heater assembly in which a susceptor and an electrically conductive track are placed on a sheet and rolled together with the sheet on a main roller, and the susceptor and the electrically conductive track are thermally bonded to the sheet.

[0009] Another object may be to provide a method of manufacturing a heater assembly that forms a plurality of layers including any one of a susceptor, an electrically conductive track and a sheet.

[0010] Another object may be to provide a method of manufacturing a heater assembly in which a heating time, pressure and temperature of a sheet set within a specific range are applied.

[0011] According to one aspect of the present disclosure for achieving the above-described object, a method for manufacturing a heater assembly for an aerosol generating device is provided, comprising the steps of: preparing a long sheet; arranging a susceptor and an electrically conductive track on the sheet; and rolling the sheet, on which the susceptor and the electrically conductive track are arranged, on a main roller, wherein the rolling step includes sequentially passing the sheet through a space formed between each of a plurality of sub-rollers adjacent to the main roller and the main roller, and rolling the sheet on an outer peripheral surface of the main roller.

[0012] According to at least one embodiment of the present disclosure, by sequentially passing the sheet through a space formed by each of a main roller and a plurality of sub-rollers and wrapping the sheet around the main roller, each layer of the sheet can be firmly pressed against each other during the manufacturing process of the heater assembly, and some layers can be prevented from being lifted.

[0013] According to at least one embodiment of the present disclosure, by heating the sheet by the main roller and heating and pressurizing the sheet by the sub roller, each layer of the sheet can be firmly pressed against each other during the manufacturing process of the heater assembly, and gas generated from the sheet can be discharged to the outside during the manufacturing process.

[0014] According to at least one embodiment of the present disclosure, a process for manufacturing a heater assembly can be simplified and an adhesive structure of the heater assembly can be simplified by rolling a susceptor and an electrically conductive track arranged on a sheet together with the sheet onto a main roller and thermally bonding the susceptor and the electrically conductive track to the sheet.

[0015] According to at least one embodiment of the present disclosure, by forming a plurality of layers including any one of a susceptor, an electrically conductive track, and a sheet, the size of the device can be reduced and heat dissipation to the outside can be minimized.

[0016] According to at least one embodiment of the present disclosure, by setting the heating time, pressure and temperature within a specific range during the manufacturing process, it is possible to prevent the insulation of the heater from swelling or a portion of the insulation from being lifted or peeled off from the heating element when using the aerosol generating device.

[0017] 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.

[0018] FIG. 1 and FIG. 2 are drawings illustrating an aerosol generating device according to embodiments of the present disclosure.

[0019] FIG. 3 is an exploded perspective view of a heater assembly according to one embodiment of the present disclosure.

[0020] FIG. 4 is a cross-sectional view of a heater assembly according to one embodiment of the present disclosure.

[0021] FIG. 5 is a drawing illustrating an electrically conductive track of a heater assembly according to one embodiment of the present disclosure.

[0022] FIG. 6 is a flowchart showing a method for manufacturing a heater assembly according to one embodiment of the present disclosure.

[0023] FIG. 7 is a drawing showing a state in which a susceptor and an electrically conductive track are arranged on a sheet in a heater assembly according to one embodiment of the present disclosure.

[0024] FIGS. 8 to 10 are drawings showing a process of wrapping a sheet on a main roller in a method for manufacturing a heater assembly according to one embodiment of the present disclosure.

[0025] FIG. 11 is a drawing showing a process of assembling a bracket and a casing in a method for manufacturing a heater assembly according to one embodiment of the present disclosure.

[0026] FIG. 12 is an image illustrating swelling and lifting of an insulator that may occur with use of a heater assembly according to one embodiment of the present disclosure.

[0027] Figure 13 is a block diagram of an aerosol generating device according to one embodiment of the present disclosure.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0034] Throughout this specification, the orientation of the heater assembly manufacturing device and sheet for an aerosol generator may be defined based on an orthogonal coordinate system. In the orthogonal coordinate system, the x-axis direction may be defined as the left-right direction of the manufacturing device. The y-axis direction may be defined as the front-back direction of the manufacturing device. The z-axis direction may be defined as the up-down direction of the manufacturing device.

[0035]

[0036] Figures 1 and 2 illustrate an aerosol generating device (1) according to embodiments of the present disclosure.

[0037] Referring to FIGS. 1 and 2, the aerosol generating device (1) 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 an insertion space (43) that is opened upward so that a stick (S), which is an aerosol generating article, may be inserted. 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 a medium. The lower end of the stick (S) may be inserted into the inside of the body (10), and the upper end of the stick (S) may protrude outside the body (10). The user can inhale air by placing the top of the stick (S) exposed to the outside in his mouth.

[0038] 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.

[0039] 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).

[0040] 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).

[0041] 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).

[0042] 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).

[0043] 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.

[0044] 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).

[0045] 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).

[0046]

[0047] FIG. 3 is an exploded perspective view of a heater assembly according to one embodiment of the present disclosure, FIG. 4 is a cross-sectional view of a heater assembly according to one embodiment of the present disclosure, and FIG. 5 is a drawing illustrating an electrically conductive track of a heater assembly according to one embodiment of the present disclosure.

[0048]

[0049] Referring to FIGS. 3 and 4, a heater (18) may be disposed within the body (10). The heater (18) may be referred to as a heater assembly. The heater assembly (18) may have a tube shape or a cylindrical shape including a hollow portion therein. The heater assembly (18) may surround an insertion space (43). The heater assembly (18) 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 (18).

[0050] The heater assembly (18) may include a susceptor (50), an electrically conductive track (60), and an insulator (40).

[0051] The susceptor (50) may have a cylindrical shape. The susceptor (50) may be located at the innermost side of the hollow heater assembly (18). The susceptor (50) may be arranged on the inner side of the electrically conductive track (60). The susceptor (50) may surround at least a portion of the insertion space (43). At least a portion of the inner surface of the susceptor (50) may be in contact with the outer surface of the stick (S) inserted into 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.

[0052] In the circumferential direction of the susceptor (50) or the circumferential direction of the insertion space (43), one end of the susceptor (50) may be spaced apart from the other end of the susceptor (50). A gap (G1, see FIG. 10) may be formed between one end and the other end of the susceptor (210). The gap (G1) may be formed to be long in the longitudinal direction of the insertion space (43). 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, the gap (G1) may be formed to have a maximum width such that the aerosol generated from the stick (S) is greater than or equal to a set minimum amount.

[0053] 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.

[0054] 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 receive power from the 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 formed by etching a metal thin film with a laser. The electrically conductive track (60) may be made of, but is not limited to, stainless steel, copper, aluminum, or an alloy.

[0055] An insulator (40) may be arranged on one side of the electrically conductive track (60). The insulator (40) is arranged on the inner and outer sides of the electrically conductive track (60) and may have a cylindrical shape. The insulator (40) may cover the electrically conductive track (60). In the longitudinal direction of the insertion space (43), the insulator (40) may extend further upward and downward than the electrically conductive track (60). In the radial direction of the insertion space (43), the insulator (40) may be arranged between the susceptor (50) and the electrically conductive track (60) and on the outer side of the electrically conductive track (60).

[0056] The insulator (40) may be formed of a material having flexibility and heat resistance. The insulator (40) may include, but is not limited to, polyimide or polyetheretherketone (PEEK), and may include other materials having elasticity, heat resistance, and electrical insulation properties.

[0057] Brackets (91, 92) can be attached to the upper and lower sides of the heater assembly (18). The brackets (91, 92) can include a first bracket (91) attached or attached to the upper side of the heater assembly (18) corresponding to the opening of the insertion space (43) and a second bracket (92) attached or attached to the lower side of the heater assembly (18).

[0058] The first bracket (91) may have an overall cylindrical shape and may be provided with a flange (912) that protrudes radially outward from the upper end. The lower side of the first bracket body (911) may be attached to or press-fitted to the upper side of the heater assembly (18). The first bracket (911) may have an insertion hole (913) formed that penetrates the central portion thereof vertically. One side of the flange (912) may be recessed radially inward to form an alignment groove. The alignment groove may have a shape corresponding to a protrusion provided on the body (10). The alignment groove may be coupled to the protrusion provided on the body (10). The alignment groove may prevent the heater assembly (18) from rotating on the body (10), and the heater assembly (18) may be stably coupled to the body (10).

[0059] The second bracket (92) may have an overall cylindrical shape and may be provided with a flange (922) protruding radially outward from the lower end. The upper side of the second bracket body (921) may be attached to or press-fitted to the lower part of the heater assembly (18). The second bracket (92) may have a hole (924) formed through the central portion thereof from top to bottom.

[0060] The insertion hole (913) of the first bracket (91) can communicate with the upper side of the insertion space (43). The hole (924) of the second bracket (92) can communicate with the lower side of the insertion space (43). The stick (S) can be inserted into the insertion space (43) through the insertion hole (913). Outside air can be introduced from the outside of the heater assembly (18) through the end of the stick (S) into the inside of the stick (S) through the hole (924). The inner surface of the first bracket body (911) can support at least a part of the outer surface of the stick (S) inserted into the insertion space (43). The upper surface (923) of the second bracket body (921) can support at least a part of the lower side of the stick (S) inserted into the insertion space (43).

[0061] Accordingly, both ends of the heater assembly (18) including the susceptor (50) and the electrically conductive track (60) can be stably fixed, thereby ensuring the rigidity of the heater assembly (18).

[0062] Brackets (91, 92) may be made of, but are not limited to, stainless steel, aluminum, polyetheretherketone (PEEK) or an alloy.

[0063] A stick detection sensor (133, see FIG. 4) may be disposed in the heater assembly (18). 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 (18). 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 the insulator (40) extending below the electrically conductive track (60) and surround a portion of the outer edge of the insulator (40). 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).

[0064] 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.

[0065] A casing (93, 94) may be coupled to a side surface of the heater assembly (18). The casing (93, 94) may include a first casing (93) surrounding a portion of the side surface of the heater assembly (18) and a second casing (94) surrounding the remaining portion of the side surface of the heater assembly (18). The first casing (93) and the second casing (94) may be coupled to surround the side surface of the heater assembly (18). The first casing (93) and the second casing (94) may be coupled to brackets (91, 92) coupled to the upper and lower ends of the heater assembly (18).

[0066] Accordingly, the heater assembly (18) including the susceptor (50) and the electrically conductive track (60) can be protected from the outside, and the rigidity of the heater assembly (18) can be secured.

[0067]

[0068] Referring to Fig. 5, 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.

[0069] The electrically conductive track (60) may have a rounded cylindrical shape. The resistance value of the electrically conductive track (60) may be 1.0 to 1.2 ohm. The electrically conductive track (60) may be elongated in one direction and may be a rectangle with a length (L2) greater than a width (W2). The length (L2) of the electrically conductive track (60) may be 18 mm to 28 mm, and the width (W2) of the electrically conductive track (60) may be 10 mm to 20 mm. Preferably, the length (L2) of the electrically conductive track (60) may be 20.5 mm to 25.5 mm, and the width (W2) of the electrically conductive track (60) may be 12.5 mm to 17.5 mm.

[0070] 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).

[0071] 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.

[0072] 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.

[0073] The width (Wa) of the first track (61a) may be smaller than the width (Wb) of the second track (61b) and the width (Wc) of the third track (61c). The width (Wb) of the second track (61b) may be smaller than the width (Wc) of the third track (61c). 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 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).

[0074] The length of the first track (61a) may be smaller than the length of the second track (61b) and the length of the third track (61c).

[0075] 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.

[0076] 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).

[0077] 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 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).

[0078] A lead (63) can be connected to an electrically conductive track (60). The lead (63) can be connected to a connecting portion (62). The lead (63) can be extended in a long direction in which the connecting portion (62) protrudes. The lead (63) can electrically connect the electrically conductive track (60) to a power source (11) or a heater driving circuit (not shown). The lead (63) can include a first lead (63a) in contact with a first connecting portion (62a) and a second lead (63b) in contact with a second connecting portion (62b). Power can be supplied to the electrically conductive track (60) through the first lead (63a) and the second lead (63b). The lead (63) can be made of a material having a temperature coefficient of resistance (TCR) lower than that of the electrically conductive track (60). The lead (63) may be attached to the connecting portion (62) by welding, but is not limited thereto.

[0079] Accordingly, the temperature change of the electrically conductive track (60) derived based on the change in resistance of the electrically conductive track (60) can be accurately measured.

[0080]

[0081] FIG. 6 is a flowchart showing a method for manufacturing a heater assembly according to one embodiment of the present disclosure, FIG. 7 is a drawing showing a state in which a susceptor and an electrically conductive track are arranged on a sheet in a heater assembly according to one embodiment of the present disclosure, FIGS. 8 to 10 are drawings showing a process of wrapping a sheet on a main roller in a method for manufacturing a heater assembly according to one embodiment of the present disclosure, and FIG. 11 is a drawing showing a process of assembling a bracket and a casing in a method for manufacturing a heater assembly according to one embodiment of the present disclosure.

[0082]

[0083] Referring to FIGS. 6 and 7, a method for manufacturing a heater assembly according to one embodiment of the present disclosure includes a step of preparing a sheet (40) (S610), a step of arranging a susceptor (50) and an electrically conductive track (60) on the sheet (40) (S620), and a step of rolling the sheet (40) on a main roller (71) (S630).

[0084] In step S610, a sheet (40) may be prepared. The sheet (40) may be a single sheet that extends in one direction or the x direction. The sheet (40) may be a flexible sheet and may be formed of a material having heat resistance. The sheet (40) may be referred to as an insulator or an insulating sheet. The sheet (40) may include, but is not limited to, polyimide or polyetheretherketone (PEEK), and may include other materials having elasticity, heat resistance, and electrical insulation.

[0085] The length (L0) of the sheet (40) may be 120 mm to 160 mm, and the width (W0) of the sheet (40) may be 15 mm to 25 mm. Preferably, the length (L0) of the sheet (40) may be 130 mm to 150 mm, and the width (W0) of the sheet (40) may be 17.5 mm to 22.5 mm.

[0086] In step S620, a susceptor (50) and an electrically conductive track (60) may be arranged on the sheet (40). The susceptor (50) and the electrically conductive track (60) may be arranged sequentially in the longitudinal direction of the sheet (40). The susceptor (50) and the electrically conductive track (60) may be arranged to be spaced apart from each other in the longitudinal direction of the sheet (40).

[0087] The susceptor (50) and the electrically conductive track (60) may be arranged on the same side of the sheet (40). The sheet (40) may include a first side that is flat and a second side that forms a side opposite to the first side in the thickness direction. The susceptor (50) and the electrically conductive track (60) may be arranged on the first side of the sheet (40). The sheet (40) may be arranged on a feeder (73). The sheet (40) may be arranged on the feeder (73) such that the second side contacts an upper surface of the feeder (73).

[0088] By arranging the susceptor (50) and the electrically conductive track (60) on the same side of the sheet (40), the spring back that occurs when an elastic object is rolled up can be reduced, thereby reducing defects in the heater assembly.

[0089] The susceptor (50) may be arranged adjacent to one end of the sheet (40) in the longitudinal direction of the sheet (40). One end (51) of the susceptor (50) may be aligned parallel to one end of the sheet (40). One end (64) of the electrically conductive track (60) may be spaced apart from the other end (52) of the sheet (40) by a predetermined distance (A1). The upper end (53) of the susceptor (50) may be aligned with the upper end (66) of the electrically conductive track (60). The lower end (54) of the susceptor (50) may be aligned with the lower end (67) of the electrically conductive track (60).

[0090] The susceptor (50) may be positioned closer to the main roller (71) than to the electrically conductive track (60) in the longitudinal direction of the sheet (40).

[0091] The width (W0) of the sheet (40) may be greater than the width (W1) of the susceptor (50) and the width (W2) of the electrically conductive track (60). The susceptor (50) and the electrically conductive track (60) may be arranged closer to the top than to the bottom of the sheet (40) in the width direction or y direction of the sheet (40). The distance (A2) at which the top (53) of the susceptor (50) and / or the top (66) of the electrically conductive track (60) are spaced from the top of the sheet (40) may be smaller than the distance (A3) at which the bottom (54) of the susceptor (50) and / or the bottom (67) of the electrically conductive track (60) are spaced from the bottom of the sheet (40).

[0092] The distance (A1) at which the susceptor (50) is spaced apart from the electrically conductive track (60) in the longitudinal direction of the sheet (40) may be smaller than the length (L2) of the electrically conductive track (60) defined in the longitudinal direction of the sheet (40). The susceptor (50) and the electrically conductive track (60) may be electrically insulated from each other by the sheet (40). As the distance (A1) at which the susceptor (50) is spaced apart from the electrically conductive track (60) increases, the number of sheet (40) layers arranged between the susceptor (50) and the electrically conductive track (60) in the hollow heater assembly (30) may increase, or the area of ​​the sheet (40) may increase. When the distance (A1) between the susceptor (50) and the electrically conductive track (60) is smaller than the length (L2) of the electrically conductive track (60), the number of layers of sheets (40) arranged between the susceptor (50) and the electrically conductive track (60) may be two or less.

[0093] Accordingly, heat generated in the electrically conductive track (60) can be more efficiently transferred to the susceptor (50).

[0094] In the longitudinal direction of the sheet (40), the length (L2) of the electrically conductive track (60) may be greater than the length (L1) of the susceptor (50). In the hollow heater assembly (30), the electrically conductive track (60) may surround the susceptor (50) on the outside of the susceptor (50). Since the length (L2) of the electrically conductive track (60) is greater than the length (L1) of the susceptor (50), the area of ​​the portion where the electrically conductive track (60) surrounds the susceptor (50) may be increased.

[0095] Accordingly, the area through which heat is transferred from the electrically conductive track (60) to the susceptor (50) increases, and the insertion space (43) or the stick (S) within the insertion space (43) can be heated more evenly by the susceptor (50) and the electrically conductive track (60). In addition, the area of ​​the electrically conductive track (60) increases, thereby increasing the degree of design freedom for the track shape.

[0096] The sheet (40) may include first to fourth parts (40a, 40b, 40c, 40d). A susceptor (50) may be arranged in the first part (40a). An electrically conductive track (60) may be arranged in the second part (40b). A third part (40c) may be arranged between the first part (40a) and the second part (40b) in the longitudinal direction of the sheet (40) and may be connected to the first part (40a) and the second part (40b). A fourth part (40d) may extend from the second part (40b) in the longitudinal direction of the sheet (40) and may face the third part (40c) with respect to the second part (40b).

[0097] In the longitudinal direction of the sheet (40), the first part (40a) may be arranged closer to the main roller (71) than the second to fourth parts (40b, 40c, 40d). The first part (40a) may be rolled first on the main roller (71) than the second to fourth parts (40b, 40c, 40d), and may be arranged further inward than the second to fourth parts (40b, 40c, 40d) in the radial direction of the hollow heater assembly (18).

[0098]

[0099] Referring to FIG. 8 together with FIG. 6, in step S630, the sheet (40) can be rolled around the main roller (71). The sheet (40) can be wound around the main roller (71). The sheet (40) can be rolled around the main roller (71) from one end of the sheet (40) while being placed on the feeder (73). The sheet (40) can be moved toward the main roller (71) by the feeder (73). The feeder (73) includes a belt (not shown) and can move the sheet (40) toward the main roller (71) while traveling at a constant speed in the direction toward the main roller (71) or in the x-direction by a driving means (not shown).

[0100] The main roller (71) can rotate in one direction. The main roller (71) can rotate at a constant angular velocity for a set period of time. The diameter of the main roller (71) can be 7 mm to 8 mm. A plurality of sub-rollers (72) can be arranged along the circumference of the main roller (71). The plurality of sub-rollers (72) can be arranged spaced apart from each other along the circumference of the main roller (71) and can be arranged adjacent to the outer circumference of the main roller (71). The plurality of sub-rollers (72) can rotate in the opposite direction to the direction in which the main roller (71) rotates. The plurality of sub-rollers (72) can rotate at a constant angular velocity for a set period of time.

[0101] A space or gap may be formed between each sub-roller (72) and the outer circumference of the main roller (71). The sheet (40) may sequentially pass through the space between each sub-roller (72) and the outer circumference of the main roller (71) along the circumferential direction of the main roller (71). For example, the sheet (40) may sequentially pass through a first space between the main roller (71) and a first sub-roller (72a), a second space between the main roller (71) and a second sub-roller (72b), a third space between the main roller (71) and a third sub-roller (72c), a fourth space between the main roller (71) and a fourth sub-roller (72d), and a fifth space between the main roller (71) and a fifth sub-roller (72e). The sheet (40) can form one layer on the outside of the main roller (71) while passing through the first to fifth spaces sequentially. Thereafter, the sheet (40) can form one more layer on the outside of the previously formed layer while passing through the first to fifth spaces sequentially again.

[0102] Accordingly, during the manufacturing process of the heater assembly (18), each layer of the sheet (40) can be firmly pressed against each other, and some layers can be prevented from being lifted.

[0103] At least one of the plurality of sub-rollers (72) may have a different diameter than the other sub-rollers (72).

[0104] For example, the diameter of the first sub-roller (72a) may be larger than the diameters of the second to fifth sub-rollers (72b, 72c, 72d, 72e). When the diameter of the sub-roller is large, the curvature of the outer circumference is smaller than when the diameter is small, so that the sheet (40) passing between the sub-roller and the main roller (71) can be pressed more evenly. Since the diameter of the first sub-roller (72a), which presses the sheet (40) first, is formed larger than the diameters of the other sub-rollers, the sheet (40) can be stably rolled around the main roller (71), and the problem of a part of the sheet (40) being lifted during the rolling process can be prevented.

[0105] When the diameter of the sub-roller is small, the number of sub-rollers that can be arranged along the circumference of the main roller (71) can be greater than when the diameter is large. By forming the diameters of the remaining second to fifth sub-rollers (72b, 72c, 72d, 72e) smaller than that of the first sub-roller (72a), the number of sub-rollers arranged along the circumference of the main roller (71) can be increased, thereby allowing the sheet (40) to be stably rolled around the main roller (71).

[0106]

[0107] Referring to FIG. 9 together with FIG. 6, in step S630, the susceptor (50) and the electrically conductive track (60) can be rolled together with the sheet (40) on the main roller (71). The sheet (40) can be rolled on the main roller (71) so that the susceptor (50) faces the outer surface of the main roller (71). The susceptor (50) can be rolled on the outer surface of the main roller (71) while moving together with the sheet (40) while being placed on the sheet (40). The susceptor (50) can form a first layer on the outer side of the main roller (71). The first part (40a) of the sheet (40) in contact with the susceptor (50) can form a second layer on the outer side of the first layer formed by the susceptor (50).

[0108] The main roller (71) can be heated to a constant temperature. The main roller (71) can include a heating element arranged adjacent to the outer surface. The main roller (71) can be heated by the heating element. The sheet (40) and the susceptor (50) rolled on the outer surface of the main roller (71) can be heated by the main roller (71). A plurality of sub-rollers (72) can press the sheet (40) and the susceptor (50) together with the main roller (71). The susceptor (50) can be heated and pressurized by the main roller (71) and the plurality of sub-rollers (72) and be thermally fused to the sheet (40).

[0109] Accordingly, the manufacturing process of the heater assembly (18) can be simplified, and the bonding structure of the heater assembly (18) can be simplified.

[0110]

[0111] Referring to FIG. 10 together with FIG. 6, in step S630, the sheet (40) can be rolled around the main roller (71) so that the electrically conductive track (60) faces the outer surface of the main roller (71). The electrically conductive track (60) can be rolled around the main roller (71) while moving together with the sheet (40) while being placed on the sheet (40). The electrically conductive track (60) can form a third layer on the outer side of the main roller (71). The second part (40b) of the sheet (40) in contact with the electrically conductive track (60) can form a fourth layer on the outer side of the third layer formed by the electrically conductive track (60).

[0112] An electrically conductive track (60) that is rolled by the main roller (71) can be heated together with the sheet (40). A plurality of sub-rollers (72) can press the sheet (40) and the electrically conductive track (60) together with the main roller (71). The electrically conductive track (60) can be heated and pressed by the main roller (71) and the plurality of sub-rollers (72) to be thermally bonded to the sheet (40).

[0113] The space between each sub-roller (72) and the outer circumference of the main roller (71) may have a variable width. For example, each sub-roller (72) may be movable in the radial direction of the main roller (71). Each sub-roller (72) is provided to be rotatable along a rotational axis, and the rotational axis of each sub-roller (72) may be movable in the radial direction of the main roller (71). A driving means may be connected to the rotational axis of each sub-roller (72) to move the sub-roller (72) in the radial direction of the main roller (71) so that each sub-roller (72) presses the sheet (40) with a constant pressure toward the center of the main roller (71). The driving means may be provided with a motor, a gear, a pressure sensor, or the like, and may move the rotational axis in the radial direction of the main roller (71). The sub-roller (72) can move in the radial direction of the main roller (71) together with the rotating shaft moved by the driving means, and can press the sheet (40) rolled on the main roller (71).

[0114] As each sub-roller (72) moves in the radial direction of the main roller (71), the shortest distance or width of the space between the outer surface of each sub-roller (72) and the main roller (71) can increase or decrease.

[0115] Accordingly, even if the sheet (40) is rolled on the outer surface of the main roller (71) and at least one side is formed on the outer surface of the main roller (71), the sheet (40) rolled on the main roller (71) can be constantly pressed at a set pressure.

[0116]

[0117] Referring back to FIG. 6, in step S630, at least one of the plurality of sub-rollers (72) may be heated. At least one of the plurality of sub-rollers (72) may include a heating element disposed adjacent to an outer surface thereof. At least one of the plurality of sub-rollers (72) may be heated by the heating element. For example, the main roller (71) may be heated to a first temperature, and at least one of the plurality of sub-rollers (72) may be heated to a second temperature. The second temperature may be the same as or lower than the first temperature. The sheet (40), the susceptor (50), and the electrically conductive track (60) rolled on the outer surface of the main roller (71) may be heated by at least one of the plurality of sub-rollers (72) and the main roller (71). The plurality of sub-rollers (72) may heat and pressurize the sheet (40), the susceptor (50), and the electrically conductive track (60) together with the main roller (71). The susceptor (50) and the electrically conductive track (60) can be heated and pressurized by the main roller (71) and a plurality of sub-rollers (72) to be thermally bonded to the sheet (40).

[0118] By heating the sheet (40), the susceptor (50) and the electrically conductive track (60) by at least one of the plurality of sub-rollers (72), the respective layers of the sheet (40) can be firmly pressed against each other during the manufacturing process of the heater assembly (18), and the gas generated from the sheet (40) can be discharged to the outside during the manufacturing process.

[0119]

[0120] Referring to FIG. 4 together with FIG. 6, at step S630, the sheet (40) can be rolled in a direction from one end of the first part (40a) toward one end of the fourth part (40d). In the hollow heater assembly (18), the second part (40b) can be arranged on the outside of the first part (40a), and the fourth part (40d) can be arranged on the outside of the second part (40b).

[0121] The sheet (40) can be rolled at least three turns around the outer surface of the main roller (71). For example, the sheet (40) can be rolled around the main roller (71) to form a first layer (40a) including a susceptor (50). The first layer can be formed by a first part. The susceptor (50) can form a layer on the inner side of the first layer (40a), and the first layer (40a) can surround the outer side of the layer formed by the susceptor (50). The sheet (40) can be rolled around the main roller (71) to form a second layer (40b) including an electrically conductive track (60). The second layer can be formed by a second part. The second layer (40b) can be arranged on the outer side of the first layer (40a) in the radial direction of the main roller (71). The electrically conductive track (60) forms one layer on the inner side of the second layer (40b), and the second layer (40b) can surround the outer side of the layer formed by the electrically conductive track (60). The sheet (40) can be rolled around the main roller (71) to form a third layer (40d). The third layer can be formed by the fourth part. The third layer (40d) can be arranged on the outer side of the second layer (40b) in the radial direction of the main roller (71). The third layer (40d) can form 1 to 4 layers in the radial direction of the main roller (71). For example, the third layer (40d) can form four layers (40d1, 40d2, 40d3, 40d4).

[0122] Accordingly, when the electrically conductive track (60) generates heat, the heat generated in the electrically conductive track (60) can be minimized from being transferred to the outside of the heater assembly (18), and the thermal efficiency of the heater assembly (18) can be increased.

[0123]

[0124] Referring to FIG. 11 together with FIG. 6, a method for manufacturing a heater assembly according to one embodiment of the present disclosure may further include, after step S630, a step (S640) of separating a sheet (40) from a main roller (71) and a step (S650) of assembling a bracket (91, 92) and a casing (93, 94) to the sheet (40).

[0125] In step S640, the hollow-rolled sheet (40) can be separated from the main roller (71). For example, after step S630, a plurality of sub-rollers (72) can be separated from the main roller (71), and the hollow-rolled sheet (40) can be separated from the main roller (71) along the axial direction of the main roller (71).

[0126] In step S650, brackets (91, 92) can be assembled to the hollow-shaped dried sheet (40). A first bracket (91) can be attached or pressed into one open end of the hollow sheet (40). A second bracket (92) can be attached or pressed into the other open end of the hollow sheet (40).

[0127] The hollow rolled sheet (40) may include a susceptor (50) and an electrically conductive track (60) therein. The hollow rolled sheet (40), the susceptor (50), and the electrically conductive track (60) may constitute a heater assembly (18). By attaching or press-fitting the first bracket (91) and the second bracket (92) to both ends of the hollow sheet (40), the ends of the heater assembly (18) including the susceptor (50) and the electrically conductive track (60) are stably fixed, thereby ensuring the rigidity of the heater assembly (18).

[0128] In step S650, casings (93, 94) can be assembled to the side surfaces of the hollow-rolled sheet (40). A first casing (93) can be coupled to the side surface of the hollow-rolled sheet (40). The first casing (93) can surround a portion of the side surface of the heater assembly (18). A second casing (94) can be coupled to the side surface of the hollow-rolled sheet (40). The second casing (94) can surround the remaining portion of the side surface of the heater assembly (18). The first casing (93) and the second casing (94) can include a coupler. A protrusion or groove formed in the first casing (93) can be coupled to a groove or groove formed in the second casing (94). The first casing (93) and the second casing (94) can be combined with brackets (91, 92) coupled to the upper and lower ends of the heater assembly (18).

[0129] Accordingly, the heater assembly (18) including the susceptor (50) and the electrically conductive track (60) can be protected from the outside, and the rigidity of the heater assembly (18) can be secured.

[0130]

[0131] FIG. 12 is an image illustrating swelling and lifting of an insulator that may occur with use of a heater assembly according to one embodiment of the present disclosure.

[0132] Referring to FIG. 12 together with FIG. 6, in step S630, the sheet (40) is heated by the main roller (71) for a set period of time and can be rolled on the main roller (71) while being pressed by the main roller (71) and a plurality of sub-rollers (72).

[0133] In step S630, the main roller (71) may be heated to a first temperature. For example, the first temperature may be a temperature of 360 to 400 degrees. Preferably, the first temperature may be about 380 degrees. The sheet (40) may be heated by the heated main roller (71).

[0134] In step S630, the plurality of sub-rollers (72) can pressurize the sheet (40) with a first pressure together with the main roller (71). For example, the first pressure can be 18 kgf to 22 kgf. Preferably, the first pressure can be about 20 kgf. The sheet (40) can be pressurized with a constant pressure by the plurality of sub-rollers (72) and the main roller (71).

[0135] In step S630, the main roller (71) can roll the sheet (40) for a first period of time while rotating at a constant speed. For example, the first period of time may be 10 to 14 minutes. Preferably, the first period of time may be about 12 minutes. The sheet (40) can be rolled on the outer surface of the main roller (71) at a constant speed for the set first period of time.

[0136] As the user uses the aerosol generator (1) including the heater assembly (18), a portion of the insulator (40) constituting the heater assembly (18) may swell or be lifted off the susceptor (50) or the electrically conductive track (60).

[0137] As illustrated in Fig. 12, when a part of the insulator (40) constituting the heater assembly (18) swells during the process of repeatedly heating and cooling the electrically conductive track (60), a part of the susceptor (50) and / or the electrically conductive track (60) may be lifted from the insulator (40) at a location (401, 402). When a part of the susceptor (50) and / or the electrically conductive track (60) is lifted from the insulator (40), the shape of the insertion space (43) inside the heater assembly (18) may be distorted, and heat generated in the electrically conductive track (60) may not be properly transferred to the susceptor (50). Accordingly, the stick (S) accommodated in the insertion space (43) may not be heated normally.

[0138] Table 1 below shows the swelling and lifting quality of the insulation according to time, temperature, and pressure in a method for manufacturing a heater assembly according to one embodiment of the present disclosure.

[0139] In the following Table 1, the quality of swelling or lifting of the insulator (40) is shown according to the first time (t) for rotating the main roller (71) to roll the sheet (40) onto the main roller (71), the first temperature (H) for heating the main roller (71), and the first pressure (P) for pressing the sheet (40) by the plurality of sub-rollers (72) and the main roller (71).

[0140] In Table 1 below, the first time (t), first temperature (H), and first pressure (P) represent the set time, temperature, and pressure in the process of producing a heater assembly (18) by placing a susceptor (50) and an electrically conductive track (60) on a sheet (40) and rolling the sheet (40) together with the susceptor (50) and the electrically conductive track (60) on a main roller (71). The first time (t) is divided into a 1-1 time (A) and a 1-2 time (B). The 1-1 time (A) represents the time for the main roller (71) to roll from the first part (40a) where the susceptor (50) is placed to the second part (40b) where the electrically conductive track (60) is placed. The 1-2 time (B) represents the time for the fourth part (40d) connected to the second part (40b) to roll on the main roller (71).

[0141] In Table 1 below, the quality of swelling or lifting of the insulator (40) was measured after the produced heater assembly (18) was left in an environment of 60 degrees Celsius and 90% humidity for 16 hours. The quality of swelling or lifting of the sheet (40) was visually evaluated by looking at the degree of swelling of the first layer (40a) disposed between the susceptor (50) and the electrically conductive track (60) in the heater assembly (18) cut in a direction crossing the longitudinal direction and the degree to which the first layer (40a) was lifted from the susceptor (50) or the electrically conductive track (60). The evaluation was conducted on 10 evaluators, and the quality was evaluated by dividing it into three levels: Good, Medium, and Poor.

[0142] Classification t(sec) H(°C) P(kgf) Insulator swelling, lifting Quality#1A: 120, B: 240 380 10 Poor#2A: 240, B: 480 380 20 Good#3A: 480, B: 960 320 20 Medium#4A: 240, B: 240 380 20 Medium#5A: 480, B: 240 320 20 Medium

[0143]

[0144] Referring to Table 1 above, in Example #2 of Category #1, based on Comparative Example 1, the total heating time (A, B) and pressure were doubled. Compared to Comparative Example 1, the component sound and the lifting quality of the insulator (40) in the Example were improved to a Good level. Based on Comparative Example 1, in Comparative Example 2 of Category #3, the total heating time (A, B) was quadrupled, the pressure was doubled, and the temperature was reduced by 60 degrees. Compared to Comparative Example 1, the component sound and the lifting quality of the insulator (40) in Comparative Example 2 were improved to a Medium level.

[0145] Based on Comparative Example 1, Comparative Example 3 of Classification #4 doubled the 1-1 time (A) and doubled the pressure. Compared to Comparative Example 1, the component sound and excitation quality of the insulator (40) in Comparative Example 3 were improved to the Medium level.

[0146] Based on Comparative Example 1, Comparative Example 4 of Classification #5 increased the 1-1 time (A) by four times, increased the pressure by two times, and reduced the temperature by 60 degrees. Compared to Comparative Example 1, the component sound and excitation quality of the insulator (40) in Comparative Example 4 were improved to the Medium level.

[0147] It can be confirmed that the embodiment of Table 1 above exhibited the highest insulation component sound or lifting quality compared to Comparative Examples 1 to 4. Thus, according to the embodiment of the present disclosure, by setting the heating time, pressure, and temperature within a specific range during the manufacturing process, it is possible to prevent the heater's insulation from swelling or a portion of the insulation from lifting or peeling off from the susceptor or electrically conductive track due to use of the aerosol generator.

[0148]

[0149] Fig. 13 is a block diagram of an aerosol generating device (1) according to one embodiment of the present disclosure.

[0150] 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. 13. 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. 13 may be omitted or new components may be added.

[0151] 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.

[0152] 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).

[0153] 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.

[0154] 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).

[0155] 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.

[0156] A temperature sensor (131) is placed inside the body (10) and can detect the internal temperature of the body (10).

[0157] 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).

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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).

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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).

[0166] 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.

[0167] 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.

[0168] 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.

[0169] 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.

[0170] 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.

[0171] 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.

[0172] Although not shown in FIG. 13, 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.

[0173] 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.

[0174] 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. 13, 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.

[0175] 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. 13, the device may further include a power conversion circuit, for example, 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. 13, 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).

[0176] 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.

[0177] 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.

[0178] 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.

[0179] 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).

[0180] Meanwhile, the input unit (15) may include, but is not limited to, buttons, key pads, dome switches, jog wheels, jog switches, etc.

[0181] 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.

[0182] 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.

[0183] 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.

[0184] 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.

[0185] Although not shown in FIG. 13, 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.

[0186] 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.

[0187] 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).

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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).

[0197] 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).

[0198] 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).

[0199] 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).

[0200] 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).

[0201] 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).

[0202] 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).

[0203] 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.

[0204] 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.

[0205] 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).

[0206] 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).

[0207] 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).

[0208] 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).

[0209] 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.

[0210] 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.

[0211] 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.

[0212] 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.

[0213] 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.

[0214] 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.

[0215]

[0216] As described above, according to at least one embodiment of the present disclosure, by sequentially passing the sheet through a space formed by each of the main roller and a plurality of sub-rollers and wrapping the sheet around the main roller, each layer of the sheet can be firmly pressed against each other during the manufacturing process of the heater assembly, and some layers can be prevented from being lifted.

[0217] According to at least one embodiment of the present disclosure, by heating the sheet by the main roller and heating and pressurizing the sheet by the sub roller, each layer of the sheet can be firmly pressed against each other during the manufacturing process of the heater assembly, and gas generated from the sheet can be discharged to the outside during the manufacturing process.

[0218] According to at least one embodiment of the present disclosure, a process for manufacturing a heater assembly can be simplified and an adhesive structure of the heater assembly can be simplified by rolling a susceptor and an electrically conductive track arranged on a sheet together with the sheet onto a main roller and thermally bonding the susceptor and the electrically conductive track to the sheet.

[0219] According to at least one embodiment of the present disclosure, by forming a plurality of layers including any one of a susceptor, an electrically conductive track, and a sheet, the size of the device can be reduced and heat dissipation to the outside can be minimized.

[0220] According to at least one embodiment of the present disclosure, by setting the heating time, pressure and temperature within a specific range during the manufacturing process, it is possible to prevent the insulation of the heater from swelling or a portion of the insulation from being lifted or peeled off from the heating element when using the aerosol generating device.

[0221]

[0222] Referring to FIGS. 1 to 13, a method for manufacturing a heater assembly (18) for an aerosol generator according to one aspect of the present disclosure includes the steps of: preparing a long sheet (40); arranging a susceptor (50) and an electrically conductive track (60) on the sheet (40); and rolling the sheet (40) on which the susceptor (50) and the electrically conductive track (60) are arranged on a main roller (71); wherein the rolling step may include sequentially passing the sheet (40) through a space formed between each of a plurality of sub-rollers (72) adjacent to the main roller (71) and the main roller (71), thereby rolling the sheet (40) on the outer peripheral surface of the main roller (71).

[0223] In addition, according to another aspect of the present disclosure, the plurality of sub-rollers (72) may be arranged spaced apart from each other in the circumferential direction of the main roller (71) and may be arranged adjacent to the outer peripheral surface.

[0224] In addition, according to another aspect of the present disclosure, the arranging step may include a step of arranging the susceptor (50) and the electrically conductive track (60) to be spaced apart from each other in the longitudinal direction of the sheet (40), and arranging the susceptor (50) closer to the main roller (71) than the electrically conductive track (60) in the longitudinal direction of the sheet (40).

[0225] Additionally, according to another aspect of the present disclosure, the placing step may include placing the susceptor (50) and the electrically conductive track (60) on the same surface of the sheet (40).

[0226] Additionally, according to another aspect of the present disclosure, the rolling step may include a step of rolling the sheet (40) onto the main roller (71) such that the susceptor (50) faces the outer surface.

[0227] In addition, according to another aspect of the present disclosure, the rolling step may include a step of rolling the sheet (40) on the main roller (71) while heating the sheet (40) by the main roller (71) and pressurizing the sheet (40) by the plurality of sub-rollers (72).

[0228] In addition, according to another aspect of the present disclosure, the step of heating the susceptor (50) and the electrically conductive track (60) by the main roller (71) and pressurizing the susceptor (50) and the electrically conductive track (60) by the plurality of sub-rollers (72) while thermally bonding the susceptor (50) and the electrically conductive track (60) to the sheet (40).

[0229] In addition, according to another aspect of the present disclosure, the drying step may include a step of heating the main roller (71) to a first temperature, heating at least one of the plurality of sub-rollers (72) to a second temperature equal to or lower than the first temperature, and heating the sheet (40) to be dried on the main roller (71) by the main roller (71) and the plurality of sub-rollers (72).

[0230] In addition, according to another aspect of the present disclosure, the step of pressing may include a step of pressing the sheet (40) with a pressure of 18 kgf to 22 kgf by the main roller (71) and each of the plurality of sub-rollers (72).

[0231] In addition, according to another aspect of the present disclosure, the drying step may include a step of heating the main roller (71) to a temperature of 360 degrees to 400 degrees, and heating the sheet (40) to be dried on the main roller (71) by the main roller (71).

[0232] Additionally, according to another aspect of the present disclosure, the rolling step may include rolling the sheet (40) on the main roller (71) for 10 to 14 minutes.

[0233] In addition, according to another aspect of the present disclosure, the step of wrapping the sheet (40) around the outer surface of the main roller (71) for at least three turns.

[0234] In addition, according to another aspect of the present disclosure, the rolling step may include: rolling the sheet (40) around the main roller (71) to form a first layer (40a) including the susceptor (50); forming a second layer (40b) including the electrically conductive track (60) and disposed on the outer side of the first layer (40a) in the radial direction of the main roller (71); and forming at least one third layer (40d) formed by the sheet (40) and disposed on the outer side of the second layer (40b) in the radial direction of the main roller (71).

[0235] In addition, according to another aspect of the present disclosure, the third layer (40d) can form 1 to 4 layers in the radial direction of the main roller (71).

[0236] In addition, according to another aspect of the present disclosure, the method may further include a step of separating a hollow dried sheet (40) from the main roller (71); a step of assembling brackets (91, 92) to the opened one end and the other end of the dried sheet (40); and a step of assembling a casing (93, 94) to the side of the dried sheet (40).

[0237]

[0238] 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.

[0239] 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.

[0240] 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. Step of preparing one long sheet; A step of arranging a susceptor and an electrically conductive track on the above sheet; A step of rolling the sheet on which the susceptor and the electrically conductive track are arranged on a main roller; The above steps are, A method for manufacturing a heater assembly for an aerosol generating device, comprising a step of sequentially passing the sheet through a space formed between each of a plurality of sub-rollers adjacent to the main roller and the main roller, and wrapping the sheet on the outer surface of the main roller.

2. In paragraph 1, The above plurality of sub-rollers are, A method for manufacturing a heater assembly for an aerosol generating device, wherein the heater assembly is arranged spaced apart from each other in the circumferential direction of the main roller and is arranged adjacent to the outer surface.

3. In paragraph 1, The above placement step is, A method for manufacturing a heater assembly for an aerosol generating device, comprising the steps of: arranging the susceptor and the electrically conductive track so as to be spaced apart from each other in the longitudinal direction of the sheet; and arranging the susceptor closer to the main roller than the electrically conductive track in the longitudinal direction of the sheet.

4. In paragraph 1, The above placement step is, A method for manufacturing a heater assembly for an aerosol generator, comprising the step of arranging the susceptor and the electrically conductive track on the same surface of the sheet.

5. In paragraph 1, The above steps are, A method for manufacturing a heater assembly for an aerosol generating device, comprising a step of rolling the sheet onto the main roller so that the susceptor faces the outer surface.

6. In paragraph 1, The above steps are, A method for manufacturing a heater assembly for an aerosol generating device, comprising the step of heating the sheet by the main roller and pressing it by the plurality of sub-rollers while rolling it on the main roller.

7. In paragraph 6, The above steps are, A method for manufacturing a heater assembly for an aerosol generating device, comprising the step of heating the susceptor and the electrically conductive track by the main roller and pressurizing the susceptor and the electrically conductive track by the plurality of sub-rollers while thermally bonding the susceptor and the electrically conductive track to the sheet.

8. In paragraph 6, The above steps are, A method for manufacturing a heater assembly for an aerosol generating device, comprising the steps of heating the main roller to a first temperature, heating at least one of the plurality of sub-rollers to a second temperature equal to or lower than the first temperature, and heating the sheet to be rolled on the main roller by the main roller and the plurality of sub-rollers.

9. In paragraph 6, The above steps are, A method for manufacturing a heater assembly for an aerosol generating device, comprising the step of pressurizing the sheet at a pressure of 18 kgf to 22 kgf by the main roller and each of the plurality of sub-rollers.

10. In paragraph 6, The above steps are, A method for manufacturing a heater assembly for an aerosol generating device, comprising the step of heating the main roller to a temperature of 360 to 400 degrees and heating the sheet to be rolled on the main roller by the main roller.

11. In paragraph 6, The above steps are, A method for manufacturing a heater assembly for an aerosol generating device, comprising the step of rolling the sheet on the main roller for 10 to 14 minutes.

12. In paragraph 1, The above steps are, A method for manufacturing a heater assembly for an aerosol generating device, comprising a step of wrapping the sheet at least three times around the outer surface of the main roller.

13. In paragraph 12, The above steps are, A step of rolling the sheet around the main roller to form a first layer including the susceptor; A step of forming a second layer including the electrically conductive track and arranged on the outer side of the first layer in the radial direction of the main roller; and A method for manufacturing a heater assembly for an aerosol generating device, comprising the step of forming at least one third layer formed by the sheet and arranged on the outside of the second layer in the radial direction of the main roller.

14. In paragraph 13, The third layer above is, A method for manufacturing a heater assembly for an aerosol generating device that forms 1 to 4 layers in the radial direction of the main roller.

15. In paragraph 1, A step of separating a hollow-shaped dried sheet from the main roller; A step of assembling brackets to the opened ends and opposite ends of the above dried sheet; and A method for manufacturing a heater assembly for an aerosol generator, further comprising the step of assembling a casing to a side of the dried sheet.

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