Heater assembly and aerosol generating device

Abstract

The present invention relates to a heater assembly and an aerosol-generating device. The heater assembly includes: a tubular heating element formed of a mesh and configured to generate heat when powered; and a plurality of electrodes, connected to opposite longitudinal ends of the heating element, extending along the circumference of the heating element, and configured to supply power to the heating element.

Description

Technical Field

[0001] One or more embodiments of the present invention relate to a heater assembly and an aerosol generating device including the same, and more particularly, to a heater assembly with improved heating performance and an aerosol generating device including the same. Background Art

[0002] Recently, there has been a growing demand for alternatives to traditional combustible cigarettes. For example, research has been conducted on methods of providing aerosols by heating liquid or solid aerosol-forming substances, or methods of generating aerosols by heating an aerosol-forming substance and passing the generated aerosols through an aroma medium.

[0003] In aerosol-generating devices that generate aerosol by heating an aerosol-generating article (e.g., a cigarette), a heater assembly that generates heat electrically may be used. Typically, the heater assembly includes electrodes that supply power to the heating element, thereby generating heat electrically. Short circuits may occur when the electrodes come into contact with each other. To prevent such short circuits, a heating element that surrounds the cigarette may be designed so that its ends do not come into contact with each other.

[0004] However, in this case, some parts of the aerosol-generating article are not completely surrounded by the heating element, and therefore, the heating element may not be able to sufficiently heat the aerosol-generating article, resulting in an insufficient amount of aerosol.

[0005] A heating element using a circuit pattern disposed on the surface of an insulating substrate is also being considered as a new structure for a heater assembly in an aerosol-generating device. In a heating element using a circuit pattern, when power is supplied, the circuit pattern generates heat. Sufficient gaps between the circuit patterns are required to prevent short circuits. Therefore, when heating an aerosol-generating article with a circuit pattern surrounding it, heat may not be sufficiently transferred to certain portions of the aerosol-generating article corresponding to the gaps between the circuit patterns, resulting in limitations in aerosol generation. Summary of the Invention

[0006] Problems to be solved by the invention

[0007] One or more embodiments provide a heater assembly capable of generating high-quality aerosol and an aerosol generating device including the heater assembly.

[0008] One or more embodiments also provide a heater assembly capable of uniformly and efficiently heating the entire aerosol-generating article, and an aerosol-generating device including the heater assembly.

[0009] Means used to solve problems

[0010] According to an embodiment, a heater assembly includes: a heating element formed of a mesh and having a tubular shape, and configured to generate heat when powered; and a plurality of electrodes, respectively connected to two opposite ends of the heating element in a longitudinal direction, extending along a circumferential direction of the heating element, and configured to supply power to the heating element.

[0011] According to an embodiment, a heater assembly includes: a heating element formed of a mesh and in a tubular shape, and configured to generate heat when powered; and a plurality of electrodes, respectively connected to two opposite ends of the heating element in a longitudinal direction, arranged on the outside of the heating element to extend along the entire circumference of the heating element, and configured to supply power to the heating element, the ends of the plurality of electrodes respectively including a plurality of terminals protruding outward from the heating element, the length of the electrodes extending along the entire circumference of the heating element being greater than the length of the entire circumference of the heating element, and the remaining portion of the electrodes after extending along the entire circumference of the heating element protruding outward from the heating element to become the terminals of the electrodes.

[0012] According to an embodiment, a heater assembly includes: a heating element formed of a mesh and having a tubular shape including a cavity for inserting a cigarette, and configured to generate heat when powered to heat the cigarette inserted into the cavity; and a plurality of electrodes, respectively connected to two opposite ends of the heating element in a longitudinal direction, arranged on the outside of the heating element to extend along the entire circumference of the heating element, and configured to supply power to the heating element, the ends of the plurality of electrodes respectively including a plurality of terminals protruding outward from the heating element, the length of the electrodes extending along the entire circumference of the heating element being greater than the length of the entire circumference of the heating element, and the remaining parts of the electrodes after extending along the entire circumference of the heating element protruding outward from the heating element to become the terminals of the electrodes.

[0013] According to an embodiment, an aerosol generating device includes: the above-mentioned heater assembly; and a power supply unit configured to supply power to the heater assembly, the heating element being configured to accommodate an aerosol generating article in a longitudinal direction of the heating element.

[0014] Effects of the Invention

[0015] According to one or more embodiments, in a heater assembly and an aerosol-generating device including the heater assembly, the electrodes are arranged to extend in the circumferential direction of the heating element. Thus, the heating element can uniformly heat the entire aerosol-generating article. Consequently, the heating performance of the heater assembly can be improved, and high-quality aerosol can be generated by uniformly heating the aerosol-generating article. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 and Figure 2 is a diagram showing an example of a cigarette being inserted into an aerosol generating device.

[0017] Figure 3 It is a diagram for explaining an example of a cigarette.

[0018] Figure 4 is an operational flow chart of a method of manufacturing a heater assembly for an aerosol generating device according to an embodiment.

[0019] Figure 5A yes Figure 4 Schematic conceptual illustration of some operations in a method of manufacturing a heater assembly for an aerosol-generating device, according to an embodiment.

[0020] Figure 5B yes Figure 4 Schematic conceptual diagram of further operations in a method of manufacturing a heater assembly for an aerosol generating device according to an embodiment.

[0021] Figure 6 and Figure 7 yes Figure 4 Schematic conceptual diagram of further operations in a method of manufacturing a heater assembly for an aerosol generating device according to an embodiment.

[0022] Figure 8 is used Figures 4 to 7 A cross-sectional view of an example of a heater assembly of an aerosol generating device.

[0023] Figure 9 is a cross-sectional view of a heater assembly of an aerosol generating device according to another embodiment.

[0024] Figure 10 is a perspective view of a heater assembly of an aerosol generating device according to another embodiment.

[0025] Figure 11 yes Figure 10 A cross-sectional view of a heater assembly of an aerosol generating device of an embodiment.

[0026] Figure 12 is a perspective view of a heater assembly of an aerosol generating device according to another embodiment.

[0027] Figure 13 is a cross-sectional view of a heater assembly of an aerosol generating device according to another embodiment.

[0028] Figure 14 is a cross-sectional view of a heater assembly of an aerosol generating device according to another embodiment.

[0029] Figure 15is a schematic cross-sectional view of a portion of an aerosol generating device according to another embodiment.

[0030] Figure 16 is a schematic diagram illustrating the connection between the heater assembly and other components of an aerosol generating device according to one embodiment.

[0031] Figure 17 is a schematic diagram illustrating the connection between a heater assembly and other components of an aerosol generating device according to another embodiment.

[0032] Figure 18 is a schematic diagram illustrating the connection between a heater assembly and other components of an aerosol generating device according to another embodiment.

[0033] Figure 19 is a schematic diagram illustrating the connection between a heater assembly and other components of an aerosol generating device according to another embodiment.

[0034] Figure 20 is a perspective view of a heater assembly of an aerosol generating device according to another embodiment. DETAILED DESCRIPTION

[0035] Regarding the terms used to describe the various embodiments, currently widely used general terms are selected taking into account the functions of the structural elements in the various embodiments of the present invention. However, the meaning of the terms can be changed according to intention, precedent, the emergence of new technologies, etc. In addition, in some cases, uncommon terms can be selected. In this case, the meaning of the terms will be described in detail at the corresponding parts in the description of the present invention. Therefore, the terms used in the various embodiments of the present invention should be defined based on the meaning of the terms and the description provided herein.

[0036] In addition, unless otherwise explicitly stated, the term "comprising" will be understood to imply the inclusion of the described elements but not the exclusion of any other elements. In addition, the terms "part" and "module" described in this specification may refer to units for processing at least one function and work, and may be implemented by hardware components or software components and a combination thereof.

[0037] As used herein, expressions such as “at least one of,” when following a list of elements, modify the entire list of elements and do not modify the individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only “a,” only “b,” only “c,” “a and b,” “a and c,” “b and c,” or “a, b, c” all.

[0038] If a component or layer is referred to as being “on,” “over,” “connected to,” or “coupled to” another component or layer, the component or layer is disposed on, over, connected to, or coupled to the component or layer, with or without intervening components or layers. In contrast, if a component or layer is referred to as being directly “on,” “over,” “directly connected to,” or “directly coupled to” another component or layer, there are no additional components or layers present. In the present invention, like reference numerals may represent like components.

[0039] Embodiments of the present invention will be described more fully below with reference to the accompanying drawings, in which exemplary embodiments of the present invention are shown to enable those skilled in the art to readily implement the present invention. However, the present invention may be implemented in many different forms and should not be construed as limited to the embodiments described herein.

[0040] In the present invention, the distinction between various "embodiments" is only for illustrative purposes, and the various embodiments should not be interpreted as limiting. For example, the features of one embodiment can be applied and implemented in other embodiments within the spirit and scope described in the present invention.

[0041] In addition, the terms used in this specification are intended to illustrate the present embodiment, rather than to limit the present embodiment. In this specification, unless otherwise specified in a sentence, a singular form also includes a plural form.

[0042] Although terms such as "first," "second," etc. may be used to describe various components, the components should not be limited by the terms. The terms are only used to distinguish one component from another.

[0043] Throughout the specification, the "longitudinal direction" of a component may be the longitudinal direction in which the longitudinal axis of the component extends.

[0044] According to one embodiment, a heater assembly includes: a heating element formed of a mesh and having a tubular shape, and configured to generate heat when powered; and a plurality of electrodes, respectively connected to two opposite ends of the heating element in a longitudinal direction, extending along a circumferential direction of the heating element, and configured to supply power to the heating element.

[0045] The plurality of electrodes may include a first electrode disposed at an upper end portion of the heating element and a second electrode disposed at a lower end portion of the heating element, and the first electrode and the second electrode may extend along an entire circumference of the heating element.

[0046] The first electrode may be disposed on an inner side or an outer side of the heating element, and the second electrode may be disposed on the inner side or the outer side of the heating element.

[0047] The heater assembly may further include a support member disposed inside the heating element and comprising a thermally conductive material.

[0048] The heater assembly may further include a support member disposed on an outer side of the heating element and comprising a heat-resistant material.

[0049] The plurality of electrodes may include a first electrode disposed at an upper end portion of the heating element and a second electrode disposed at a lower end portion of the heating element, and the first electrode and the second electrode extend from an inner side of the heating element to an outer side of the support member.

[0050] The heating element may extend from the inner side of the support member to the outer side of the support member so that two opposite ends of the heating element are arranged on the outer side of the support member, and the plurality of electrodes may be respectively connected to the two opposite ends of the heating element arranged on the outer side of the support member.

[0051] The heater assembly may further include a protective film provided on at least one of an inner side and an outer side of the heating element.

[0052] Two opposing edges of the heating element in a circumferential direction of the heating element may contact each other.

[0053] Two opposite ends of the heating element in a circumferential direction of the heating element may overlap with each other.

[0054] The plurality of electrodes may respectively include a plurality of terminals protruding externally from the heating element.

[0055] According to another embodiment, the aerosol generating device includes a heater assembly and a power supply unit configured to supply power to the heater assembly, the heater assembly including: a heating element formed of a mesh and having a tubular shape, and configured to generate heat when powered; and a plurality of electrodes, respectively connected to two opposite ends of the heating element in a longitudinal direction, extending along the circumferential direction of the heating element, and configured to supply power to the heating element.

[0056] Figure 1 and Figure 2 is a diagram showing an example of a cigarette being inserted into an aerosol generating device.

[0057] Reference Figure 1 and Figure 2The aerosol generating device 10000 includes a battery 11000, a controller 12000, a heater 13000, and a vaporizer 14000. In addition, a cigarette 20000 can be inserted into the internal space of the aerosol generating device 10000.

[0058] Figure 1 and Figure 2 The illustrated aerosol-generating device 10000 includes a vaporizer. However, embodiments are not limited to this implementation method, and the vaporizer may be omitted. Even if the vaporizer is omitted from the aerosol-generating device 10000, the cigarette 20000 contains an aerosol-generating substance, and when the cigarette 20000 is heated by the heater 13000, the cigarette 20000 generates an aerosol.

[0059] Figure 1 and Figure 2 Only the parts of the aerosol generating device 10000 that are relevant to this embodiment are shown. Therefore, a person skilled in the art will understand that, except for Figure 1 In addition to the components shown, the aerosol generating device 10000 may also include other common components.

[0060] in addition, Figure 1 and Figure 2 The aerosol generating device 10000 is shown to include a heater 13000. However, depending on the embodiment, the heater 13000 may be omitted.

[0061] Figure 1 The battery 11000, controller 12000, vaporizer 14000 and heater 13000 are arranged in series. Figure 2 The vaporizer 14000 and the heater 13000 are shown to be arranged in parallel. However, the internal structure of the aerosol generating device 10000 is not limited to Figure 1 or Figure 2 In other words, depending on the design of the aerosol generating device 10000, the battery 11000, the controller 12000, the vaporizer 14000, and the heater 13000 may be configured in different ways.

[0062] When the cigarette 20000 is inserted into the aerosol generating device 10000, the aerosol generating device 10000 can generate aerosol from the vaporizer 14000 by operating the vaporizer 14000. The aerosol generated by the vaporizer 14000 is transferred to the user through the cigarette 20000. The vaporizer 14000 will be described in more detail later.

[0063] The battery 11000 can supply the power required for the operation of the aerosol generating device 10000. For example, the battery 11000 can supply the power required for heating the heater 13000 or the vaporizer 14000 and can also supply the power required for the operation of the controller 12000. In addition, the battery 11000 can supply the power required for the operation of the display, sensors, motors, etc. installed in the aerosol generating device 10000.

[0064] The controller 12000 can control the overall operation of the aerosol generating device 10000. More specifically, the controller 12000 can control not only the operation of the battery 11000, the heater 13000, and the vaporizer 14000, but also the operation of other components in the aerosol generating device 10000. In addition, the controller 12000 can determine whether the aerosol generating device 10000 is in an operable state by checking the status of each component of the aerosol generating device 10000.

[0065] The controller 12000 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 programs executable by the microprocessor. Those skilled in the art will appreciate that the controller 12000 may be implemented in other hardware forms.

[0066] The heater 13000 can be heated by power supplied by the battery 11000. For example, when the cigarette 20000 is inserted into the aerosol generating device 10000, the heater 13000 can be located outside the cigarette 20000. Therefore, the heated heater 13000 can increase the temperature of the aerosol generating substance in the cigarette 20000.

[0067] The heater 13000 may include a resistive heater. For example, the heater 13000 may include a conductive track, and when current flows through the conductive track, the heater 13000 may be heated. However, the heater 13000 is not limited to the above example and may include any other heater that can heat to a desired temperature. The desired temperature may be pre-set in the aerosol generating device 10000 or may be set by the user.

[0068] As another example, the heater 13000 may include an induction heater. Specifically, the heater 13000 may include a conductive coil for heating the cigarette using an induction heating method, and the cigarette may include a heat-sensitive body that can be heated by the induction heater.

[0069] Figure 1 and Figure 2The heater 13000 is shown as being located outside the cigarette 20000, but the location of the cigarette 20000 is not limited thereto. For example, the heater 13000 may include a tubular heating element, a plate heating element, a needle heating element, or a rod heating element, and may heat the inside or outside of the cigarette 20000 depending on the shape of the heating element.

[0070] In addition, the aerosol generating device 10000 may include a plurality of heaters 13000. The plurality of heaters 13000 may be inserted into the cigarette 20000 or disposed outside the cigarette 20000. In addition, a portion of the plurality of heaters 13000 may be inserted into the cigarette 20000, and another portion may be disposed outside the cigarette 20000. In addition, the shape of the heater 13000 is not limited to Figure 1 and Figure 2 The shape shown can have various shapes.

[0071] The vaporizer 14000 can generate an aerosol by heating the liquid composition, and the generated aerosol can be delivered to the user through the cigarette 20000. In other words, the aerosol generated by the vaporizer 14000 can move along the airflow path of the aerosol generating device 10000, and the airflow path can be configured so that the aerosol generated by the vaporizer 14000 is delivered to the user through the cigarette 20000.

[0072] For example, the vaporizer 14000 may include a liquid storage portion, a liquid transmission element, and a heating element, but is not limited thereto. For example, the liquid storage portion, the liquid transmission element, and the heating element may be provided in the aerosol generating device 10000 as separate modules.

[0073] The liquid storage unit can store a liquid composition. For example, the liquid composition can be a liquid containing a tobacco substance containing volatile tobacco flavor components, or a liquid containing a non-tobacco substance. The liquid storage unit can be configured to be attachable to or detachable from the vaporizer 14000, or can be integral with the vaporizer 14000.

[0074] For example, the liquid composition may include water, a solvent, ethanol, a plant extract, a fragrance, a flavoring agent, or a vitamin mixture. Flavoring agents may include, but are not limited to, menthol, peppermint, spearmint oil, various fruit-flavored ingredients, and the like. Flavoring agents may include ingredients that can provide a variety of aromas or flavors to the user. A vitamin mixture may include, but is not limited to, a mixture of at least one of vitamin A, vitamin B, vitamin C, and vitamin E. Furthermore, the liquid composition may include an aerosol former such as glycerin and propylene glycol.

[0075] The liquid transfer element can transfer the liquid composition of the liquid storage portion to the heating element. For example, the liquid transfer element can be a core such as cotton fiber, ceramic fiber, glass fiber or porous ceramic, but is not limited thereto.

[0076] The heating element is a component used to heat the liquid composition being transferred via the liquid transfer element. For example, the heating element may be a metal heating wire, a metal hot plate, a ceramic heater, etc., but is not limited thereto. Alternatively, the heating element may be formed of a conductive heating wire such as a nickel-chromium wire, and may be arranged so as to be wound around the liquid transfer element. The heating element is heated by the supply of electric current and transfers heat to the liquid composition in contact with the heating element, thereby heating the liquid composition. As a result, an aerosol can be generated.

[0077] For example, vaporizer 14000 may be referred to as an atomizer or a sprayer, but is not limited thereto.

[0078] The aerosol generating device 10000 may also include other common structures in addition to the battery 11000, the controller 12000, and the heater 13000. For example, the aerosol generating device 10000 may include a display that can output visual information and / or a motor for outputting tactile information. Furthermore, the aerosol generating device 10000 may include at least one sensor (e.g., a puff sensor, a temperature sensor, a cigarette insertion sensor, etc.). Furthermore, the aerosol generating device 10000 may be constructed to allow external air to flow in or internal gas to flow out even when a cigarette 20000 is inserted into the aerosol generating device 10000.

[0079] Although Figure 1 and Figure 2 Although not shown, the aerosol generating device 10000 may also be combined with a separate bracket to form a system. For example, the bracket can be used to charge the battery 11000 of the aerosol generating device 10000. Alternatively, when the bracket is coupled to the aerosol generating device 10000, the heater 13000 can be heated.

[0080] Cigarette 20000 can be similar to a conventional combustion-type cigarette. For example, cigarette 20000 can be divided into a first portion including an aerosol-generating substance and a second portion including a filter, etc. Alternatively, the second portion of cigarette 20000 can also include an aerosol-generating substance. For example, an aerosol-generating substance in the form of particles or capsules can be inserted into the second portion.

[0081] The entire first portion is inserted into the aerosol generating device 10000, while the second portion is exposed to the outside. Alternatively, only a portion of the first portion may be inserted into the aerosol generating device 10000, or a portion of the first portion and a portion of the second portion may be inserted into the aerosol generating device 10000. The user can hold the second portion in their mouth and inhale the aerosol. In this case, external air passes through the first portion, generating an aerosol, which is then delivered to the user's mouth via the second portion.

[0082] As an example, external air can flow in through at least one air passage formed in the aerosol generating device 10000. For example, the opening and / or size of the air passage formed in the aerosol generating device 10000 can be adjusted by the user. This allows the user to adjust the amount of atomization, the puffing sensation, and the like. As another example, external air can flow into the interior of the cigarette 20000 through at least one hole formed in the surface of the cigarette 20000.

[0083] The following will refer to Figure 3 , an example of cigarette 20000 is explained.

[0084] Figure 3 FIG. 1 is a diagram showing an example of a cigarette.

[0085] Reference Figure 3 , the cigarette 20000 includes a tobacco rod 21000 and a filter rod 22000. Figure 1 and Figure 2 The first part includes a tobacco rod 21000 , and the second part includes a filter rod 22000 .

[0086] Figure 3 The filter stick 22000 shown includes a single segment. However, the filter stick 22000 is not limited thereto. In other words, the filter stick 22000 may include multiple segments. For example, the filter stick 22000 may include a first segment configured to cool the aerosol and a second segment configured to filter the specific components contained in the aerosol. In addition, as needed, the filter stick 22000 may also include at least one segment configured to perform other functions.

[0087] Cigarette 20000 may be wrapped in at least one wrapping paper 24000. Wrapping paper 24000 may have at least one hole for introducing external air or exhausting internal air. For example, cigarette 20000 may be wrapped in a single wrapping paper 24000. As another example, cigarette 20000 may be double-wrapped in at least two wrapping papers 24000. For example, tobacco rod 21000 may be wrapped in a first wrapping paper, and filter rod 22000 may be wrapped in a second wrapping paper. Alternatively, tobacco rod 21000 and filter rod 22000, each wrapped in separate wrapping papers, may be combined, and the entire cigarette 20000 may be wrapped in a third wrapping paper. If filter rod 22000 includes multiple segments, each segment may be wrapped in a wrapping paper. Alternatively, the entire cigarette 20000, comprising multiple segments each wrapped in separate wrapping papers and combined together, may be rewrapped in another wrapping paper.

[0088] The tobacco rod 21000 may contain an aerosol-generating substance. For example, the aerosol-generating substance may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, but is not limited thereto. Furthermore, the tobacco rod 21000 may contain other additives such as flavorings, humectants, and / or organic acids. Furthermore, the tobacco rod 21000 may contain a flavoring liquid such as menthol or a humectant injected into the tobacco rod 21000.

[0089] Tobacco rod 21000 can be made in a variety of ways. For example, tobacco rod 21000 can be made from tobacco sheets or shredded tobacco. Alternatively, tobacco rod 21000 can be made from tobacco leaves obtained by shredding tobacco sheets. Furthermore, tobacco rod 21000 may be surrounded by a heat-conducting material. For example, the heat-conducting material may be a metal foil such as aluminum foil, but is not limited thereto. As an example, the heat-conducting material surrounding tobacco rod 21000 can evenly distribute heat transferred to tobacco rod 21000, thereby increasing the thermal conductivity of the tobacco rod and thereby enhancing the flavor of the tobacco. Furthermore, the heat-conducting material surrounding tobacco rod 21000 can function as a heat-sensitive element heated by the induction heater assembly. In this case, although not shown in the figure, tobacco rod 21000 may also include other heat-sensitive elements in addition to the heat-conducting material surrounding tobacco rod 21000.

[0090] Filter rod 22000 can be a cellulose acetate filter. Furthermore, the shape of filter rod 22000 is not limited. For example, filter rod 22000 can be cylindrical or hollow tubular. Furthermore, filter rod 22000 can be a concave rod. If filter rod 22000 is composed of multiple segments, at least one of the multiple segments can be manufactured in a different shape.

[0091] The filter rod 22000 can be formed to produce a flavor. For example, a flavoring liquid can be injected into the filter rod 22000, or additional fibers coated with a flavoring liquid can be inserted into the filter rod 22000.

[0092] Filter rod 22000 may also include at least one capsule 23000. Capsule 23000 can generate both fragrance and aerosol. For example, capsule 23000 may be a structure consisting of a liquid containing fragrance encapsulated in a membrane. Capsule 23000 may be spherical or cylindrical, but is not limited thereto.

[0093] When filter rod 22000 includes a segment configured to cool the aerosol, the cooling segment may comprise a polymer material or a biodegradable high polymer material. For example, the cooling segment may comprise only pure polylactic acid, but the materials used to form the cooling segment are not limited thereto. In some embodiments, the cooling segment may comprise a cellulose acetate filter having multiple pores. However, the cooling segment is not limited to the above examples, as long as the cooling segment cools the aerosol.

[0094] Although not in Figure 3 As shown, the cigarette 20000 according to the embodiment may further include a front filter. The front filter may be located on the side of the tobacco rod 21000 opposite to the filter rod 22000. During smoking, the front filter can prevent the tobacco rod 21000 from falling outward and prevent the liquefied aerosol from flowing from the tobacco rod 21000 into the aerosol generating device 10000 ( Figure 1 and Figure 2 ).

[0095] Those skilled in the art will appreciate that various changes may be made in form and detail without departing from the scope of the features described herein. The disclosed methods are intended to be illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing description, and all differences within the scope of their equivalents are intended to be included in the present invention.

[0096] Figure 4 is an operational flow chart of a method of manufacturing a heater assembly for an aerosol generating device according to an embodiment.

[0097] Figure 4 The method for manufacturing a heater assembly of an aerosol generating device according to an embodiment includes: operation S100, preparing a heating element formed of a mesh and capable of generating heat when powered; operation S110, assembling the heater assembly by connecting the heating element to an electrode; operation S120, forming the heater assembly into a tubular shape; operation S130, assembling the heater assembly and a support member; and operation S140, providing a protective film on at least one of the outside and the inside of the heater assembly.

[0098] The operation S110 of assembling the heater assembly by connecting the heating element to the electrode, the operation S120 of forming the heater assembly into a tubular shape, and the operation S130 of assembling the heater assembly and the support member are not always performed in sequence. The above operations may be performed simultaneously or in different order. Figure 4 Execute in the order shown.

[0099] In addition, operation S130 of assembling the heater assembly and the support member and operation S140 of providing the protective film are not essential operations and may be omitted according to an embodiment.

[0100] Figure 5A yes Figure 4 Schematic conceptual illustration of some operations in a method of manufacturing a heater assembly for an aerosol-generating device, according to an embodiment.

[0101] Figure 5A The heater assembly 10 of the aerosol generating device includes a heating element 20 formed of a mesh and generating heat when powered; and electrodes 30 a , 30 b coupled to the heating element 20 and supplying power to the heating element 20 .

[0102] To manufacture the heater assembly 10, a heating element 20 is prepared. The heating element 20 is formed of a mesh and generates heat through electrical resistance when powered. The heating element 20 includes a heating strand 21. The heating strand 21 may be made of any one of metals (e.g., copper, stainless steel (SUS), or aluminum), metal alloys (e.g., nickel-chromium alloys), and carbon heating materials, or a combination thereof. The heating strand 21 may have a circular, oval, or flat prismatic cross-section.

[0103] Figure 5A The heating element 20 may include a plurality of heating wires 21 extending in a vertical direction and a plurality of heating wires 21 extending in a horizontal direction, thereby forming a mesh shape including substantially square holes.

[0104] The heating element 20 may be manufactured in a mesh shape by weaving the heating wires 21, but the embodiment is not limited thereto. For example, the heating element 20 may be manufactured in a manner of forming a plurality of holes by removing a portion of a thin metal plate through etching or drilling.

[0105] The embodiment is not limited to square holes of the heating element 20, and the shape of the holes of the heating element 20 can be different. For example, the holes of the heating element 20 can have polygonal shapes such as triangle, square, or rectangle, circle or oval, and honeycomb.

[0106] The electrodes 30a and 30b are electrically connected to the heating element 20 and transmit power to the heating element 20. The electrodes 30a and 30b may each include any one of a highly conductive metal material such as copper, a conductive alloy material, a carbon material, and a graphene material, or a combination thereof.

[0107] Figure 5B yes Figure 4 Schematic conceptual diagram of further operations in a method of manufacturing a heater assembly for an aerosol generating device according to an embodiment.

[0108] After assembling the heater assembly 10, an operation of forming the heater assembly 10 into a tubular shape is performed. When forming the heater assembly 10 into a tubular shape, the heater assembly 10 is bent or folded so that the heater assembly 10 surrounds the aerosol-generating article 80 heated by the heater assembly 10. For ease of description, Figure 5B The aerosol-generating article 80 is shown in phantom in FIG. 8 and is not necessary in forming the heater assembly 10 .

[0109] When the heater assembly 10 is formed into a tubular shape, the heater assembly 10 is bent or folded in a horizontal direction transverse to the longitudinal direction of the aerosol-generating article 80 .

[0110] Therefore, in the heater assembly 10 formed in a tubular shape, the first and second electrodes 30 a and 30 b may be respectively disposed at the upper and lower portions of the heating element 20 and extend in the circumferential direction of the heating element 20 .

[0111] Figure 6 and Figure 7 yes Figure 4 Schematic conceptual diagram of further operations in a method of manufacturing a heater assembly for an aerosol generating device according to an embodiment.

[0112] Figure 6 、 Figure 7 The heater assembly 10 of the embodiment includes a support member 50 disposed inside the heating element 20. The support member 50 may include a thermally conductive material such as iron, stainless steel, aluminum, copper, or ceramic, and may be formed in a tubular shape.

[0113] The support member 50 can be manufactured in a shape corresponding to the outer shape of the aerosol-generating article to be heated. Therefore, the embodiment is not limited to the embodiment in which the support member 50 and the heater assembly 10 are formed in a tubular shape, and the shapes of the support member 50 and the heater assembly 10 can be changed to correspond to the outer shape of the aerosol-generating article. The support member 50 and the heater assembly 10 can each have a tubular shape including a cavity 51 for accommodating an aerosol-generating article 80 (e.g., a cigarette). The support member can have a polygonal cross-section, such as a triangular or square cross-section, or an elliptical cross-section.

[0114] In the process of arranging the support 50 in the heating element 20, a tubular support 50 may be prepared first, and the heating element 20 may be bent to surround the support 50. Thus, the heating element 20 and the electrodes 30a, 30b may be arranged outside the support 50.

[0115] Alternatively, the support member 50 having a tubular shape and the heater assembly 10 having a tubular shape having a diameter corresponding to that of the support member 50 are separately prepared, and the support member 50 may be inserted into the heater assembly 10 .

[0116] The first electrode 30a of the heater assembly 10 at one end (i.e., the upper portion) of the heating element 20 can extend in the circumferential direction of the heating element 20, thereby forming a ring. The second electrode 30b of the heater assembly 10 at the other end (i.e., the lower portion) of the heating element 20 can extend in the circumferential direction, thereby forming a ring. Hereinafter, the term "longitudinal direction" or "longitudinal direction" refers to the direction in which the longitudinal axis of the support member 50 extends (i.e., the direction in which the aerosol-generating article 80 is inserted into the cavity 51). Furthermore, the term "length" refers to a dimension measured in the longitudinal direction.

[0117] Figure 6 and Figure 7 The electrodes 30a and 30b are provided at both ends of the heating element 20, but one or more embodiments are not limited to Figure 6 and Figure 7 Arrangement of the electrodes 30a, 30b shown. For example, the electrodes 30a, 30b may be arranged to protrude further than the electrodes 30a, 30b in the longitudinal direction.

[0118] When the heater assembly 10 and the support 50 are coupled to each other, the first electrode 30 a corresponds to one end 50 a of the support 50 in the longitudinal direction, and the second electrode 30 b corresponds to an opposite end 50 b of the support 50 in the longitudinal direction.

[0119] Figure 8 is used Figures 4 to 7 A cross-sectional view of an example of a heater assembly of an aerosol generating device.

[0120] In a state in which the heater assembly 10 is coupled to the support 50 , edges 20 s of the ends of the heating elements 20 may contact each other.

[0121] In a conventional heater assembly manufactured by bending a heating element plate into a tubular shape, electrodes for supplying power to the heating element may be arranged circumferentially separated from each other to prevent short circuits. In this case, some portions of the aerosol-generating article may not be sufficiently heated due to the presence of dead space between the electrodes in the circumferential direction.

[0122] However, in the structure of the heater assembly 10 of the embodiment, the heating element 20 of the heater assembly 10 surrounds the entire circumference of the aerosol-generating article 80. Therefore, the side surface of the aerosol-generating article 80 can be uniformly heated along the circumferential direction. Therefore, high-quality aerosol can be generated from the aerosol-generating article 80.

[0123] Figure 6 and Figure 7 The length (i.e., height) of the heating element 20 is shown to be the same as the length (i.e., height) of the support member 50, but one or more embodiments are not limited to this structure. For example, the length of the support member 50 may be greater than the length of the heating element 20, so that at least one of the two ends of the support member 50 may protrude outside the heating element 20. Alternatively, the length of the heating element 20 may be greater than the length of the support member 50.

[0124] After the heater assembly 10 is coupled to the support member 50, a protective film 60 may be provided on the outside of the heater assembly 10. The protective film 60 may be provided on the outside of the heating element 20. The protective film 60 may serve to protect the heating element 20, to minimize the heat transfer from the heating element 20 to the outside, and to provide insulation to prevent leakage to other components. The protective film 60 may, for example, comprise a resin material such as polyimide, silicon, or Teflon. The protective film 60 may, for example, be manufactured into a tubular shape and then coupled to the tubular heating element 20, or may be manufactured into a sheet shape and then provided to surround the outside of the tubular heating element 20.

[0125] The electrodes 30a, 30b of the heater assembly 10 may have terminals 30t at their ends, respectively. Figure 7 and Figure 8 As shown, the terminal 30t can be pulled outward from the heating element 20. An external power supply component can be connected to the terminal 30t.

[0126] Figure 9 is a cross-sectional view of a heater assembly of an aerosol generating device according to another embodiment.

[0127] exist Figure 9 In the heater assembly of FIG. 1 , the ends of the first electrodes 30a coupled to the outer sides of the heating element 20 may overlap with each other. Figure 8 In the heater assembly of the embodiment, the heating element 20 can completely surround the aerosol-generating article 80, which is the heating target, in the circumferential direction, so that the aerosol-generating article 80 can be uniformly heated. In addition, because the ends of the first electrode 30a overlap with each other, the first electrode 30a and the heating element 20 can maintain a stable connection.

[0128] Figure 10 is a perspective view of a heater assembly of an aerosol generating device according to another embodiment. Figure 11 yes Figure 10 A cross-sectional view of a heater assembly of an aerosol generating device of an embodiment.

[0129] Figure 10 and Figure 11 The heater assembly 10 of the embodiment includes a tubular heating element 20 formed of a mesh, and electrodes 30a, 30b for supplying power to the heating element 20 may be respectively provided at two opposite ends of the heating element 20 and extend in the circumferential direction.

[0130] The electrodes 30a and 30b include a first electrode 30a and a second electrode 30b. The first electrode 30a can be provided on the inner side of the heating element 20, and the second electrode 30b can be provided on the outer side of the heating element 20. Therefore, the first electrode 30a surrounds the entire end of the inner side of the heating element in the circumferential direction, and the second electrode 30b surrounds the entire end of the other side of the heating element 20.

[0131] The electrodes 30a and 30b of the heater assembly 10 each include a terminal 30t at the end of the electrode 30a and 30b. When the electrodes 30a and 30b are attached to the outside of the heating element 20, the terminal 30t can be pulled outward from the heating element 20. An external power supply can be connected to the terminal 30t.

[0132] The support member 50 may be disposed inside the heating element 20 in the heater assembly 10 . However, one or more embodiments are not limited thereto, and the heater assembly 10 may not include the support member 50 .

[0133] When the heater assembly 10 includes only the heating element 20 and does not include the support member 50, the inner side of the heating element 20 directly faces the aerosol-generating article, thereby directly heating the aerosol-generating article. In this case, a protective film may be provided on at least one of the inner and outer sides of the heating element 20 to protect the heating element 20.

[0134] Figure 12 is a perspective view of a heater assembly of an aerosol generating device according to another embodiment.

[0135] Figure 12 The heater assembly 10 of the embodiment includes a tubular heating element 20 formed of a mesh. Electrodes 30a, 30b for supplying power to the heating element 20 may be provided at opposite ends of the heating element 20 and extend along the circumference of the heating element 20. A tubular support member 50 may be provided outside the heating element 20.

[0136] Although not shown, a protection film for protecting the heating element 20 may be provided on at least one of the inner and outer sides of the heating element 20 .

[0137] like Figure 12 As shown, the support member 50 may be provided on the outside of the heating element 20 so as to stably maintain the coupling structure of the heating element 20 to the electrodes 30a and 30b.

[0138] In addition, since the inner side of the support member 50 surrounds the outer side of the heating element 20, heat can be retained between the inner side of the support member 50 and the outer side of the heating element 20. That is, since heated air exists in the space between the support member 50 and the outer side of the heating element 20, a high temperature environment can be generated around the heating element 20, thereby improving heating efficiency.

[0139] In addition, the support member 50 can prevent the heat generated from the heating element 20 from being radiated to the outside of the support member 50. The support member 50 may include a material with low thermal conductivity, such as plastic or glass, to prevent heat from being transferred to the outside of the support member 50. Alternatively, the basic structure of the support member 50 may be formed of a metal material, and a shielding layer for blocking heat transfer may be provided on at least one of the inner and outer sides of the support member 50. The shielding layer may include a shielding film provided on at least one of the inner and outer sides of the support member 50, or a heat transfer shielding paint applied to the surface of the support member 50.

[0140] Figure 13 is a cross-sectional view of a heater assembly of an aerosol generating device according to another embodiment.

[0141] Figure 13 The heater assembly 10 of the embodiment includes: a heating element 20, electrodes 30a, 30b, a support member 50, and a protective film 60. The heating element 20 may be formed of a mesh and formed into a tubular shape. The electrodes 30a, 30b for supplying power to the heating element 20 may be respectively disposed at both ends of the heating element 20 in the longitudinal direction and extend in the circumferential direction of the heating element 20. The support member 50 may be disposed outside the heating element 20, and the protective film 60 may cover the inside of the heating element 20.

[0142] The electrodes 30a and 30b include: a first electrode 30a, which is provided at one end of the support member 50 in the longitudinal direction of the support member 50; and a second electrode 30b, which is provided at the opposite end of the support member 50 in the longitudinal direction of the support member 50. One end 33 of each of the first and second electrodes 30a and 30b is connected to the inner side of the heating element 20, and the other end 31 of each of the first and second electrodes 30a and 30b contacts the outer side of the support member 50. The one end 33 and the other end 31 of each of the first and second electrodes 30a and 30b are connected to each other by a folded portion 32, which is folded along the edge of the end of the support member 50. Therefore, as shown in FIG. Figure 13 As shown, the first and second electrodes 30a, 30b each have a "U"-shaped longitudinal cross-section.

[0143] In the above-described heater assembly 10, when the aerosol-generating article 80, which is a heating target, is inserted into the heating element 20 of the heater assembly 10, the aerosol-generating article 80 is heated by the heating element 20. Since the inner side of the heating element 20 faces the outer side of the aerosol-generating article 80, the heat generated by the heating element 20 is directly transferred to the aerosol-generating article 80, thereby effectively heating the aerosol-generating article 80.

[0144] Additionally, because the heating element 20 surrounds the entire circumference of the aerosol-generating article 80 , the aerosol-generating article 80 can be heated evenly.

[0145] In addition, since the heated air is held in the lattice spaces of the mesh of the heating element 20 , a high temperature environment for heating the aerosol-generating article 80 can be generated around the outer surface of the aerosol-generating article 80 .

[0146] In addition, since the electrodes 30a, 30b coupled to the two ends of the heating element 20 are stably coupled to the two edges of the support member 50 provided on the outside of the heating element 20, the coupled structure of the heating element 20, the electrodes 30a, 30b and the support member 50 can be firmly maintained.

[0147] Figure 14 is a cross-sectional view of a heater assembly of an aerosol generating device according to another embodiment.

[0148] Figure 14 The heater assembly 10 of the embodiment includes: a heating element 20, which is formed of a mesh and is tubular, and generates heat when powered; electrodes 30a, 30b, respectively arranged at two opposite ends of the heating element 20 in the longitudinal direction and extending along the circumferential direction of the heating element 20; and a support member 50, which is arranged on the outside of the heating element 20.

[0149] Although not shown, a protective film may be provided to cover at least one of the inner and outer sides of the heating element 20 .

[0150] One end portion 20 a and the other end portion 20 b of the heating element 20 may be folded toward the outside of the support member 50 beyond both ends of the support member 50 , respectively.

[0151] The electrodes 30a and 30b include a first electrode 30a and a second electrode 30b. The first electrode 30a is disposed at one end 20a of the heating element 20, which is located outside the support member 50. Similarly, the second electrode 30b is disposed at the other end 20b of the heating element 20, which is located outside the support member 50. Therefore, the first electrode 30a corresponds to the one end 50a of the support member 50, and the second electrode 30b corresponds to the other end 50b of the support member 50.

[0152] Figure 15 is a schematic cross-sectional view of a portion of an aerosol generating device according to another embodiment.

[0153] Figure 15 The aerosol generating device of the embodiment includes: a heating element 20, which is formed of a mesh and has a tubular shape that can accommodate an aerosol generating article 80, and a heater assembly 10 includes: electrodes 30a, 30b, which are arranged at two opposite ends of the heating element 20 in the longitudinal direction of the heating element 20 and extend along the circumferential direction of the heating element 20; a support member 50, which is arranged on the inner side of the heating element 20; and a power supply unit, which supplies power to the heater assembly 10.

[0154] The aerosol generating device includes a housing 90 for housing and protecting components such as the heater assembly 10 , the battery 11000 , and the controller 12000 .

[0155] In a state in which the heater assembly 10 is coupled to the support 50 , the first electrode 30 a corresponds to one end 50 a of the support 50 , and the second electrode 30 b corresponds to the other end 50 b of the support 50 .

[0156] Since the inner diameter of the support member 50 corresponds to the outer diameter of the aerosol-generating article 80, the support member 50 can stably support the aerosol-generating article 80. In addition, the support member 50 can transfer the heat generated by the heating element 20 to the aerosol-generating article 80, thereby performing the function of heating the aerosol-generating article 80.

[0157] The power supply unit may be any one of the battery 11000 and the controller 12000 or a combination thereof. For example, the battery 11000 may be directly connected to the heater assembly 10 or may be connected to the heater assembly 10 through the controller 12000. The controller 12000 may control power supplied to the heater assembly 10.

[0158] Reference Figure 15 , the controller 12000 includes a socket 70t that can be connected to the terminal 30t of the heater assembly 10. When the terminal 30t of the heater assembly 10 is electrically connected to the socket 70t of the controller 12000, the controller 12000 can control the power supplied from the battery 11000 to the heater assembly 10.

[0159] Figure 16 is a schematic diagram illustrating the connection between the heater assembly and other components of an aerosol generating device according to one embodiment.

[0160] Reference Figure 16 , the terminal 30t of the first electrode 30a of the heater assembly is electrically connected to the connector 70c of the socket 70t of the controller 12000. According to the above structure, the heater assembly can be connected to the controller 12000 in a simple manner by inserting the terminal 30t of the first electrode 30a of the heater assembly into the socket 70t. In addition, the heater assembly and the connector 70c can maintain a stable connection during use of the aerosol generating device.

[0161] Figure 17 is a schematic diagram illustrating the connection between a heater assembly and other components of an aerosol generating device according to another embodiment.

[0162] exist Figure 17 In the aerosol generating device of the embodiment, the controller 12000 includes a connector 70d and a pressure clamp 70f electrically connected to the terminal 30t of the heater assembly. The pressure clamp 70f can stably maintain the connection between the connector 70d and the terminal 30t by pressing the terminal 30t of the heater assembly in a direction toward the connector 70d.

[0163] One or more embodiments are not limited to the structure of the pressure clamp 70f and the connector 70d, and the pressure clamp 70f and the connector 70d may be modified in various ways. For example, the pressure clamp 70f and the connector 70d may be modified to use a spring pin having conductive springs or pins.

[0164] Figure 18 is a schematic diagram illustrating the connection between a heater assembly and other components of an aerosol generating device according to another embodiment.

[0165] exist Figure 18 In the aerosol generating device of the embodiment, the terminal 30t of the heater assembly can be electrically connected to the connection terminal of the controller 12000, and the terminal 30t of the heater assembly can be fixed to the controller 12000 by a fastener 70g. The fastener 70g is not limited to Figure 18 The bolts shown may be replaced by rivets or pins.

[0166] Figure 19 is a schematic diagram illustrating the connection between a heater assembly and other components of an aerosol generating device according to another embodiment.

[0167] exist Figure 19 In the aerosol generating device of the embodiment, the connection terminal of the controller 12000 is electrically connected to the terminal 30t of the heater assembly via the soldering portion 70h. However, the embodiment is not limited thereto. For example, the connection terminal of the controller 12000 may be electrically connected to the terminal 30t of the heater assembly via a conductive adhesive or welding.

[0168] Figure 20 is a perspective view of a heater assembly of an aerosol generating device according to another embodiment.

[0169] exist Figure 20 In the aerosol-generating device of the embodiment, a plurality of heater assemblies 10 and 110 are arranged continuously in the longitudinal direction (i.e., the direction in which the aerosol-generating article 80 extends). The aerosol-generating device includes: a support member 50 having a tubular shape and extending in the longitudinal direction of the aerosol-generating article 80; a first heater assembly 10 arranged on one side of the exterior of the support member 50; and a second heater assembly 110 arranged on the other side of the support member 50.

[0170] The first heater assembly 10 includes a heating element 20 surrounding an outer side of a support member 50 , electrodes 30 a and 30 b respectively surrounding two opposite ends of the heating element 20 , and terminals 30 t protruding from the ends of the electrodes 30 a and 30 b .

[0171] The second heater assembly 110 includes a heating element 120 surrounding the outside of the support member 50 , electrodes 130 a and 130 b respectively surrounding two opposite ends of the heating element 120 , and terminals 130 t protruding from the ends of the electrodes 130 a and 130 b .

[0172] Power may be supplied separately to the first heater assembly 10 and the second heater assembly 110. For example, power may be supplied to only one of the first heater assembly 10 and the second heater assembly 110, or may be supplied to both at the same time. In addition, different amounts of power may be supplied to the first heater assembly 10 and the second heater assembly 110.

[0173] Alternatively, the power supply unit of the aerosol-generating device may supply power to the first heater assembly 10 and the second heater assembly 110 according to different temperature profiles. The temperature profiles may include a relationship between a target temperature and a time required to heat the aerosol-generating article 80 to the corresponding target temperature, or a relationship between the time required to heat the aerosol-generating article 80 and the electric power supplied to the first heater assembly 10 and the second heater assembly 110 to heat the aerosol-generating article 80 within the corresponding time.

[0174] In the aerosol-generating device of one or more embodiments, different portions of the aerosol-generating article 80 can be heated to different target temperatures by controlling the first heater assembly 10 and the second heater assembly 110 disposed in the longitudinal direction of the aerosol-generating article 80. In addition, in the first heater assembly 10 and the second heater assembly 110, the heating elements 20 and 120 surround the entire circumference of the aerosol-generating article 80. Therefore, the side surface of the aerosol-generating article 80 can be uniformly heated along the circumferential direction.

[0175] Industrial Applicability

[0176] One or more embodiments relate to a heater assembly having improved heating performance and an aerosol generating device including the heater assembly.

Claims

1. A heater assembly, wherein: include: a heating element formed of a mesh and having a tubular shape including a cavity into which a cigarette can be inserted, and configured to generate heat when powered to heat the cigarette inserted into the cavity; as well as a plurality of electrodes, respectively connected to two opposite ends of the heating element in the longitudinal direction, provided on the outside of the heating element to extend along the entire circumference of the heating element, and configured to supply power to the heating element, The ends of the plurality of electrodes respectively include a plurality of terminals protruding from the heating element to the outside. The length of the electrode extending along the entire circumference of the heating element is greater than the length of the entire circumference of the heating element, The remaining portion of the electrode after extending along the entire circumference of the heating element protrudes outward from the heating element and becomes the terminal of the electrode.

2. The heater assembly according to claim 1, wherein The plurality of electrodes include a first electrode disposed at an upper end portion of the heating element and a second electrode disposed at a lower end portion of the heating element.

3. The heater assembly of claim 1 , wherein: Also includes: The support member is disposed on the inner side of the heating element and comprises a heat conductive material.

4. The heater assembly of claim 1 , wherein: Also includes: The support member is arranged on the outside of the heating element and comprises a heat-resistant material.

5. The heater assembly of claim 4, wherein: The plurality of electrodes include a first electrode disposed at an upper end portion of the heating element and a second electrode disposed at a lower end portion of the heating element.

6. The heater assembly of claim 4, wherein: The heating element extends from the inner side of the support member to the outer side of the support member so that two opposite ends of the heating element are disposed on the outer side of the support member, and The plurality of electrodes are respectively connected to two opposite end portions of the heating element disposed on an outer side of the support member.

7. The heater assembly of claim 1, wherein: Also includes: A protective film is provided on at least one of the inner side and the outer side of the heating element.

8. The heater assembly of claim 1, wherein: Two edges of the heating element that are opposite to each other in the circumferential direction are in contact with each other.

9. The heater assembly of claim 1, wherein: Two opposite ends of the heating element in the circumferential direction overlap with each other.

10. An aerosol generating device, wherein: include: The heater assembly according to any one of claims 1 to 9; as well as a power supply unit configured to supply power to the heater assembly, The heating element is configured to accommodate the cigarette in a longitudinal direction of the heating element.

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