Aerosol generating device

Abstract

An aerosol generating device according to the present disclosure comprises: a main body including an insertion space having an opening to allow a wand to be inserted into the insertion space; a heater pin protruding from an end portion of the insertion space toward the opening and configured to be inserted into the rod inserted into the insertion space; and a heater disposed in the cavity of the heater pin and configured to heat the heater pin to heat the rod inserted into the insertion space, in which the heater is formed of a material having a temperature coefficient of resistance (TCR) value of 1500 ppm / DEG C. or less.

Description

Technical Field

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

[0002] An aerosol generating device is a device that extracts certain components from a medium or substance by forming an aerosol. The medium may contain a multi-component substance. The substance contained in the medium may be a multi-component flavoring substance. For example, the three substances contained in the medium may include a nicotine component, a herbal component, and / or a coffee component. Recently, various studies have been conducted on aerosol generating devices. Summary of the invention

[0003] Technical issues The present disclosure is directed to solving the above-referenced problems and other problems.

[0004] Another object of the present disclosure is to accurately control the temperature of the heater.

[0005] Yet another object of the present disclosure is to prevent water or moisture from entering the interior of the heater pin.

[0006] Yet another object of the present disclosure is to prevent malfunction of the heater.

[0007] Yet another object of the present disclosure is to improve the structural stability of the heater assembly.

[0008] Technical Solution According to one aspect of the subject matter described in the present application, an aerosol generating device includes: a main body, including an insertion space, the insertion space having an opening to allow a rod to be inserted into the insertion space; a heater pin, protruding from an end of the insertion space toward the opening and configured to be inserted into the rod inserted into the insertion space; and a heater, disposed in a cavity of the heater pin and configured to heat the heater pin and thereby heat the rod inserted into the insertion space, wherein the heater is formed using a material having a temperature coefficient of resistance (TCR) value of less than or equal to 1500 ppm / °C.

[0009] Technical Effects According to at least one of the embodiments of the present disclosure, an aerosol generating device with improved heater and power efficiency may be provided.

[0010] According to at least one of the embodiments of the present disclosure, the temperature of the heater may be accurately controlled.

[0011] According to at least one of the exemplary embodiments of the present disclosure, water or moisture may be prevented from entering the interior of the heater pin.

[0012] According to at least one of the embodiments of the present disclosure, malfunction of the heater can be prevented.

[0013] According to at least one of the embodiments of the present disclosure, the structural stability of the heater assembly may be improved.

[0014] According to the following detailed description, the further applicable scope of the present disclosure will become apparent. However, it should be understood that the detailed description of the present disclosure and specific embodiments such as the preferred embodiments are given by way of example only, because those skilled in the art can clearly understand various changes and modifications within the thought and scope of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figures 1 to 9 An example of an aerosol generating device according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0016] Now, a detailed description will be given according to the exemplary embodiments disclosed herein with reference to the accompanying drawings. For the sake of brief description with reference to the accompanying drawings, the same or equivalent components have the same or similar reference numerals, and their description will not be repeated.

[0017] In the following description, suffixes such as "module" and "unit" may be used to refer to elements or components. Such suffixes are used herein only to facilitate the description of the specification, and the suffixes themselves are not intended to give any special meaning or function.

[0018] In the present disclosure, for the sake of brevity, the contents known to ordinary technicians in the relevant fields are generally omitted. The accompanying drawings are used to help easily understand the technical ideas of the present disclosure, and it should be understood that the concept of the present disclosure is not limited by the accompanying drawings. In addition to the accompanying drawings, the concept of the present disclosure should also be interpreted as extending to any changes, equivalents and alternatives.

[0019] It will be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element.

[0020] It will be understood that when a component is referred to as being "connected to" or "coupled to" another component, the component may be directly connected to or coupled to the other component, or intervening components may be present. On the other hand, when a component is referred to as being "directly connected to" or "directly coupled to" another component, there are no intervening components.

[0021] As used herein, singular statements are intended to include plural statements unless the context clearly indicates otherwise.

[0022] Reference Figures 1 to 3The aerosol-generating device 100 may include at least one of a battery 11 , a controller 12 , and a sensor 13 . At least one of the battery 11 , the controller 12 , and the sensor 13 may be disposed in the body 10 of the aerosol-generating device 100 .

[0023] The tube 20 may be coupled to the upper side of the body 10 . The tube 20 may have an insertion space 24 therein. The insertion space 24 may be open at the top. The insertion space 24 may have a cylindrical shape. A stick 400 may be detachably inserted into the insertion space 24 .

[0024] The heater 33 may be disposed in the heater pin 30, which protrudes upward from the cover 25 toward the insertion space 24, and the cover 25 defines the bottom of the tube 20. The heater 33 may be a resistance heater. The heater 33 may heat the rod 400 inserted into the insertion space 24.

[0025] When the stick 400 is inserted into the insertion space 24, one end of the stick 400 may be exposed to the outside of the insertion space 24 and the body 10. When the stick 400 is inserted into the insertion space 24, the heater 33 may pass through the end of the stick 400 to be inserted into the stick 400. The stick 400 may be heated by the heater 33. The user may inhale air while holding the end of the stick 400 exposed to the outside in his or her mouth.

[0026] The battery 11 may supply power to operate the components of the aerosol generating device 100. The battery 11 may supply power to at least one of the controller 12, the sensor 13, the induction coil 14, and the heater 33. The battery 11 may supply power required for the operation of a display, a motor, etc. installed at the aerosol generating device 100.

[0027] The controller 12 may control the overall operation of the aerosol generating device 100. The controller 12 may control the operation of at least one of the battery 11, the induction coil 14, and the sensor 13. The controller 12 may control the operation of a display, a motor, etc. installed at the aerosol generating device 100. The controller 12 may check the state of each of the components of the aerosol generating device 100 to determine whether the aerosol generating device 100 is in an operable state.

[0028] The sensor 13 may sense the temperature of the heater 33. The controller 12 may control the temperature of the heater 33 based on the temperature of the heater 33 sensed by the sensor 13. The controller 12 may transmit information about the temperature of the heater 33 sensed by the sensor 13 to the user through the user interface.

[0029] Reference Figure 1 , the heater 33 may be electrically connected to the battery 11. The heater 33 may directly generate heat by using the current supplied from the battery 11 without the need for the induction coil 14 (see Figure 2 ).

[0030] Reference Figure 2 , the aerosol generating device 100 may include an induction coil 14. The induction coil 14 may surround the insertion space 24 and the heater 33. The induction coil 14 may cause the heater 33 to generate heat. The heater 33 may be a susceptor that may generate heat by a magnetic field generated by an AC current flowing through the induction coil 14. The magnetic field may pass through the heater 33, thereby generating an eddy current in the heater 33. The current may cause the heater 33 to generate heat.

[0031] Reference Figures 3 to 5 , the tube 20 may include a cover 25. The cover 25 may define the bottom of the tube 20 and may cover the lower portion of the insertion space 24. The cover 25 may include a first cover portion 251 and a second cover portion 252.

[0032] The first cover portion 251 may be connected to the lower end of the tube 20. The first cover portion 251 may cover the bottom of the insertion space 24. The second cover portion 252 may be connected to the first cover portion 251. The second cover portion 252 may be formed below the first cover portion 251. The inner surface of the second cover portion 252 may be recessed outward relative to the inner surface of the first cover portion 251. The cover hole 254 may be formed in the lower portion 2522 of the second cover portion 252. The cover hole 254 may be communicated with the cavity (or hollow portion) 34 of the heater pin 30.

[0033] The heater pin 30 may protrude upwardly from the bottom of the tube 20 toward the opening of the insertion space 24. The heater pin 30 may be extended up and down or vertically. The heater pin 30 may include a cylindrical shape. The heater pin 30 may have a sharp or pointed upper end. The heater pin 30 may have a space for inserting the heater 33. The heater pin 30 may be made of a material having excellent moisture resistance and heat resistance. For example, the heater pin 30 may be made of a ceramic material.

[0034] The heater pin 30 may include a pin body 31. The pin body 31 may be vertically elongated. The pin body 31 may have a cylindrical shape. The interior of the pin body 31 may define a cavity 34. The heater pin 30 may be open at the bottom to communicate with the cavity 34. The cavity 34 may be vertically elongated. The cavity 34 may have a cylindrical shape.

[0035] The heater pin 30 may include a pin end 32. The pin end 32 may define an upper end of the heater pin 30. The pin end 32 may be integrally formed on the pin body 31. The pin end 32 may have an upwardly tapered shape. The pin end 32 may have a sharp or pointed upper end. Therefore, the heater pin 30 may pass through the rod S, thereby fixing the rod S.

[0036] The flange 35 may protrude outward from the heater pin 30. The flange 35 may protrude in a lateral direction from a lower end of the heater pin 30. The flange 35 may protrude in a radially outward direction from the heater pin 30. The flange 35 may be integrally formed with the heater pin 30.

[0037] The flange 35 may be formed using a plurality of layers. For example, the flange 35 may be formed using two layers. For example, the flange 35 may include a first flange 351 and a second flange 352. The first flange 351 may be disposed at an upper portion (or top) of the flange 35. The second flange 352 may be disposed at a lower portion (or bottom) of the flange 35. Hereinafter, it will be described that the flange 35 includes the first flange 351 and the second flange 352, but the present disclosure is not limited thereto. The flange 35 may include a greater number of flanges. For example, the flange 35 may be formed using three or more layers.

[0038] The first flange 351 may be disposed on the second flange 352. The first flange 351 may be formed integrally with the second flange 352. The first flange 351 may be disposed at a lower portion of the pin body 31. The first flange 351 may protrude in a transverse outward direction or a radial outward direction from an outer circumferential surface of the pin body 31. The first flange 351 may extend in a circumferential direction.

[0039] The second flange 352 may be disposed below the first flange 351. The second flange 352 may be disposed at the lower end of the heater pin 30. The second flange 352 may protrude in a lateral outward direction or a radial outward direction from the outer circumferential surface of the pin body 31. The second flange 352 may protrude more in a lateral outward direction or a radial outward direction than the first flange 351.

[0040] Therefore, a step (or a step portion) may exist between the first flange 351 and the second flange 352 .

[0041] At least one of the first flange 351 and the second flange 352 may have a non-circular cross-section. For example, the first flange 351 may extend in the circumferential direction to have a circular cross-sectional shape, and the second flange 352 may have a non-circular cross-sectional shape.

[0042] The first cover portion 251 may surround and closely contact the side surface of the first flange 351. The first cover portion 251 may cover or closely contact the upper surface of the second flange 352. The upper surface of the first flange 351 and the first cover portion 251 may face the bottom of the insertion space 24 together.

[0043] The second cover part 252 may surround and closely contact the side surface and the outer lower portion of the second flange 352. The second flange 352 may be disposed between the first cover part 251 and the second cover part 252 to be supported in the up-down direction or the vertical direction.

[0044] Therefore, the cover 25 and the flange 35 may be combined with each other to be engaged in the vertical direction to be supported in the vertical direction. Therefore, the heater pin 30 may be prevented from being separated from the tube 20, and structural stability may be achieved.

[0045] In addition, the cover 25 and the flange 35 may be coupled to each other to engage in the circumferential direction. Therefore, the rotation of the heater pin 30 coupled to the pipe 20 may be prevented (see Figure 3 ).

[0046] The tube 20 may be formed by insert injection molding. The tube 20 combined with the heater pin 30 may be manufactured by inserting the heater pin 30 together with the heater 33, the support rod 332 and the adhesive material 361 into a mold for injection of the tube 20, removing the lead wire 331 from the mold, and then injecting and curing the injection material into the mold.

[0047] Reference Figures 5 to 7 , the heater pin 30 may be open at the bottom. The liquid adhesive material 361 may be injected into the cavity 34 of the heater pin 30 by a syringe. The adhesive material 361 may be injected into the cavity 34 when the heater pin 30 is turned upside down or inverted so that the opening of the heater pin 30 faces upward.

[0048] The heater 33 may be a resistive metal. The heater 33 may have a coil shape. The heater 33 may be wound around an elongated support rod 332. The support rod 332 may support the heater 33 so that the heater 33 may maintain a shape.

[0049] The lead wire 331 may be extended longer from each of both ends of the heater 33. The heater 33 may be supplied with power from a power source through the lead wire 331. The heater 33 may be a resistance heater that may generate heat using power supplied thereto.

[0050] In a state where the heater pin 30 is turned upside down, the heater 33 and the support rod 332 may be inserted into the cavity 34 through the opening at the bottom of the heater pin 30. The heater 33 and the support rod 332 may be inserted into the liquid adhesive material 361 injected into the cavity 34. The support rod 332 and the heater 33 may be completely immersed in the adhesive material 361. When the heater 33 is wound around the support rod 332 and supported by the support rod 332, the shape of the heater 33 may be maintained when inserted into the adhesive material 361. Here, the lead wire 331 may extend from the heater 33 to the outside of the cavity 34 through the opening of the heater pin 30 to be exposed under the heater pin 30.

[0051] The support rod 332 may be disposed in the cavity 34 to be parallel to the pin body 31. The heater 33 may be disposed between the pin body 31 and the support rod 332 within the cavity 34. The support rod 332 and the heater 33 may be disposed to be elongated in a direction in which the cavity 34 extends.

[0052] The adhesive material 361 may fill the gaps between the pin body 31, the support rod 332, and the heater 33 in the cavity 34. After the heater 33 and the support rod 332 are inserted into the cavity 34, the adhesive material 361 may be dried for a predetermined time and cured into a solid state. The adhesive material 361 may be bonded and fixed to the inner surface of the pin body 31. The adhesive material 361 may be bonded and fixed to the heater 33 and the support rod 332. The adhesive material 361 may fix or lock the heater 33 and the support rod 332 to the heater pin 30. The adhesive material 361 may cover the opening at the bottom of the heater pin 30. The lead wire 331 may pass through the adhesive material 361 and the cover hole 254 (see Figure 3 ) to be exposed to the lower part and can be connected to a power source.

[0053] The heater pin 30 may be formed using a ceramic material. Since the heater pin 30 repeatedly contacts the rod 400, is elongated, and contains the heater 33 therein, the material of the heater pin 30 may be selected in consideration of mechanical strength, wear resistance, and heat resistance. For example, the heater pin 30 may be formed using zirconia. Zirconia has the best mechanical strength among ceramics at room temperature, has a melting point of 2000° C. or higher, and has good hardness and wear resistance. Due to its excellent durability, the heater pin 30 may maintain a stable shape even when the heater 33 repeatedly generates heat and repeatedly contacts the rod 400.

[0054] The adhesive material 361 can be made of a material that is non-conductive and has excellent heat resistance and chemical resistance. For example, the adhesive material 361 can be a ceramic adhesive (ceramic binder). The ceramic adhesive may include raw materials such as polyurethane, amine, styrene copolymer, resin, etc., but is not limited thereto. The liquid adhesive material 361 can be cured after a predetermined time at room temperature, but this can vary according to the type of raw material constituting the adhesive material 361 or the composition ratio of the raw materials. The adhesive material 361 can be a ceramic adhesive having good compatibility with the heater pin 30 formed using ceramics, so that the adhesive material 361 is suitable for bonding the heater pin 30. In addition, due to the excellent durability of the adhesive material 361, the outer shape can be stably maintained even when the heater 33 repeatedly generates heat and repeatedly contacts with the rod 400.

[0055] The bonding material 361 may include alumina ceramics, which may be a ceramic material containing alumina (Al2O3) as a main component. For example, the content of alumina in the bonding material 361 may be greater than or equal to 80%. Therefore, the bonding material 361 may have high electrical insulation, high thermal shock resistance, high thermal conductivity, and excellent mechanical bonding strength and corrosion resistance. In addition, the bonding material 361 may be suitable for bonding and sealing the inside of the heater pin 30.

[0056] The support rod 332 may include alumina (Al2O3). Alumina is one of the raw materials of ceramics and has the characteristics of good rigidity, high electrical insulation, good chemical stability, good corrosion resistance and heat resistance, and low price. Due to its electrical insulation characteristics, the support rod 332 can be prevented from short-circuiting with the heater 33, and the heater 33 can be firmly fixed with little shape deformation when the heater 33 generates heat. In addition, since the support rod 332 has good compatibility with the bonding material 361, the support rod 332 can be easily bonded to the bonding material 361.

[0057] The heater pin 30 may further include a recess 353. With respect to the lateral or horizontal direction, the inner surface of the heater pin 30 may be recessed outward from the cavity 34 near the opening of the heater pin 30, thereby defining the recess 253. The inner surface of the heater pin 30 may be recessed in a radially outward direction to define the recess 353. The recess 353 may extend in a circumferential direction. The cross-sectional shape of the recess 353 may be circular, but the present disclosure is not limited thereto. Based on the cross section, the circumference of the recess 353 may be greater than the circumference of the cavity 34.

[0058] The adhesive material 361 may include a central portion 361a and a protrusion 361b. The adhesive material 361 in a liquid state may be dried into a solid state to form a central portion 361a aligned with the cavity 34. The central portion 361a may have a cylindrical shape. The adhesive material 361 in a liquid state may be injected and filled in the recess 353. The liquid adhesive material 361 injected into the recess 353 may be dried into a solid state. The solid adhesive material 361 filling the recess 353 may be defined as a protrusion 361b. The protrusion 361b may protrude from the central portion 361a in a horizontal direction. The protrusion 361b may protrude from the central portion 361a in a radially outward direction. The central portion 361a may protrude farther vertically than the protrusion 361b. The central portion 361a and the protrusion 361b may be coupled to the inner surface of the heater pin 30.

[0059] Therefore, due to the protrusion 361 b, a step (or a step portion) may be formed in the gap between the central portion 361 a and the inner surface of the heater pin 30 , thereby preventing liquid from being introduced into the gap between the adhesive material 361 and the inner surface of the heater pin 30 .

[0060] Figure 8 is a table showing the temperature coefficient of resistance (TCR) of various metals. The TCR value can be expressed in units of / °C or ppm / °C. The TCR value of a metal can decrease as the temperature of the metal increases. The TCR values ​​described below are values ​​measured at a metal temperature of 50°C or less.

[0061] Nickel and lithium both have a TCR value of 0.006 / °C or 6000ppm / °C. Iron has a TCR value of 0.005 / °C or 5000ppm / °C. Tin and tungsten both have a TCR value of 0.0045 / °C or 4500ppm / °C. Calcium and silver both have a TCR value of 0.0041 / °C or 4100ppm / °C. Platinum has a TCR value of 0.00392 / °C or 3920ppm / °C. Aluminum, lead, and copper each have a TCR value of 0.0039 / °C or 3900ppm / °C. Zinc has a TCR value of 0.0037 / °C or 3700ppm / °C. Titanium has a TCR value of 0.00366 / °C or 3660ppm / °C. Gold has a TCR value of 0.0034 / °C or 3400ppm / °C.

[0062] In addition, stainless steel, nickel-chromium alloy, kanthal alloy, constantan alloy, and manganese bronze have high strength, high corrosion resistance (corrosion resistance), high heat resistance, and high temperature resistance. Stainless steel has a melting point of about 1400 to 1500°C; the melting point of nickel-chromium alloy is about 1400°C; the melting point of kanthal alloy is about 1500°C; constantan alloy has a melting point of about 1260°C; and manganese bronze has a melting point of about 960°C.

[0063] Stainless steel has good processability suitable for coil forming and high heat generation rate relative to the heat generation area. In the case of applying a predetermined voltage V to the metal, the lower the resistance value, the higher the heat generation amount becomes and the higher the heat generation rate becomes. The resistivity of stainless steel at 20°C may be about 6.9×10 -7 Ω ? m.

[0064] Stainless steel can have various grades depending on the content of the materials used. Stainless steel can be divided into three main groups according to the structure of the matrix: ferrite, martensite and austenite. Austenitic stainless steel is a type of steel containing a large proportion of chromium and nickel, which has good formability and corrosion resistance. Austenitic stainless steel can include, for example, 304 stainless steel, 314 stainless steel, 314L stainless steel, 316 stainless steel, 316L stainless steel, 317 stainless steel, 317L stainless steel, etc., but is not limited thereto. Austenitic stainless steels can generally have similar TCR values. For example, the TCR value of 304 stainless steel is 0.00105 / °C or 1050ppm / °C; 316L stainless steel has a TCR value of 0.00092 / °C or 920ppm / °C; 316 stainless steel has a TCR value of 0.000915 / °C or 915ppm / °C; 314L stainless steel has a TCR value of 0.00088 / °C or 880ppm / °C; and 317L stainless steel and 317 stainless steel both have a TCR value of 0.000875 / °C or 875ppm / °C.

[0065] Nickel-chromium alloys have good workability and high heat generation rate characteristics suitable for coil forming. The resistivity of nickel-chromium alloys is about 1.10×10 -6 Ω ? m. Nichrome alloys can be expressed as N60, N80, etc. according to the content ratio of nickel to chromium, and as the nickel content increases, the TCR value tends to decrease. For example, the TCR value of Nichrome alloy N60 is 0.000178 / °C or 178ppm / °C. As another example, the TCR value of Nichrome alloy N80 is 0.000112 / °C or 112ppm / °C.

[0066] Kanthal alloy has a very low TCR value, so the resistance changes very little with temperature. Kanthal alloy has a TCR value of 0.00002 / °C or 20ppm / °C. The resistivity of Kanthal alloy at 20°C is about 1.4×10 -6 Ω m.

[0067] Constantan is an alloy of nickel and copper. Constantan has good machinability, very low TCR values ​​(which means that the resistance changes very little with temperature), and a high heat generation rate. The TCR value of Constantan is 0.000008 / °C or 8ppm / °C. The resistivity of Constantan at 20°C is about 4.9×10 -7 Ω m.

[0068] Manganese copper is an alloy of copper, manganese and nickel. Manganese copper has a very low TCR value (which means that the resistance changes very little with temperature) and a high heat generation rate. The TCR value of manganese copper is 0.000002 / °C or 2ppm / °C. The resistivity of manganese copper at 20°C is about 4.82×10 -7 Ω m.

[0069] Brass is an alloy of copper and zinc. Brass has a TCR value of 0.0001 / °C or 1000ppm / °C. Brass has a melting point of about 960°C. The resistivity of brass is about 6.0×10 -8 Ω m to 9.0×10 -8 Ω m.

[0070] Mercury has a TCR value of 0.0009 / °C or 900 ppm / °C. However, since mercury is liquid at room temperature, it may not be suitable as a heating element.

[0071] Further references Figure 7, the material of the heater 33 may be selected in consideration of the TCR value. The higher the TCR value of the heater 33, the greater the change in the resistance value when the heater 33 generates heat, making it difficult to maintain a constant setting and taste. In contrast, the lower the TCR value of the heater 33, the smaller the change in the resistance value when the heater 33 generates heat using the voltage applied thereto, thereby allowing the target temperature to be reached more accurately. To this end, the TCR value of the heater 33 may be set to be less than or equal to 1500ppm / ℃. Therefore, the temperature of the heater 33 may be accurately controlled or maintained, and the temperature of the heater 33 may be accurately sensed. In addition, a stable taste may be provided to the user.

[0072] The heater 33 may include the aforementioned austenitic stainless steel. Alternatively, the heater 33 may include any one of the aforementioned brass, nickel-chromium alloy, Kanthal alloy, constantan and manganese copper. In this case, the heater 33 may have a TCR value of 2ppm / ℃ to 1100ppm / ℃.

[0073] Reference Fig. 9 , Fig. 9 The graph shows the change in heater temperature when a voltage is applied to a heater of a specific material to repeatedly generate heat at a target temperature of 326°C. Here, an experiment was conducted by repeatedly applying a voltage to the heater to generate heat at a target temperature of 326°C, and then applying the voltage again at intervals of several seconds to generate heat. The x-axis is the number of repetitions, and the y-axis is the temperature of the heater (°C). Fig. 9 In (a), the experiment was conducted on copper with a TCR value of 3900ppm / ℃. Fig. 9 In (b), the experiment was conducted on 316L stainless steel with a TCR value of 920 ppm / °C. It can be seen that as the heater repeatedly generates heat, the temperature of the 316L stainless steel remains closer to the target temperature, while the temperature of the copper rises above the target temperature.

[0074] Reference Figures 1 to 9 According to one aspect of the present disclosure, an aerosol generating device includes: a body including an insertion space having an opening to allow a stick to be inserted into the insertion space; a heater pin protruding from an end of the insertion space toward the opening and configured to be inserted into the stick inserted into the insertion space; and a heater disposed in a cavity of the heater pin and configured to heat the heater pin to heat the stick inserted into the insertion space. The heater is formed using a material having a temperature coefficient of resistance (TCR) value of less than or equal to 1500 ppm / °C.

[0075] The heater may comprise austenitic stainless steel.

[0076] The heater may comprise 316L stainless steel.

[0077] The heater may include any one of 301 stainless steel, 301L stainless steel, 304 stainless steel, 304L stainless steel, 314L stainless steel, 316 stainless steel, 317 stainless steel, and 317L stainless steel.

[0078] The heater may include any one of brass, nichrome, kanthal, constantan, and manganese bronze.

[0079] The TCR value of the material of the heater is in the range of 2 ppm / °C to 1100 ppm / °C.

[0080] The cavity and the heater may be elongated along a longitudinal direction of the heater pin.

[0081] The heater may be wrapped around an elongated support rod inserted into the cavity.

[0082] The support rod may include alumina.

[0083] The aerosol generating device may further comprise an adhesive material for filling the cavity to secure the heater to the heater pin.

[0084] The bonding material may be a ceramic bonding agent.

[0085] The ceramic binder may include alumina ceramic.

[0086] The heater pin may include zirconium oxide.

[0087] An aerosol generating device according to another aspect of the present disclosure includes: a body including an insertion space having an opening to allow a rod to be inserted into the insertion space; a heater pin protruding from an end of the insertion space toward the opening and configured to be inserted into the rod inserted into the insertion space; a heater wrapped around an elongated support rod inserted into a cavity of the heater pin, wherein the heater is configured to heat the heater pin to heat the rod inserted into the insertion space; and an adhesive material injected into the cavity to fix the support rod and the heater to the heater pin. The heater pin may be formed using zirconium oxide, the adhesive material may be a ceramic adhesive including aluminum oxide ceramic, the support rod may be formed using aluminum oxide, and the heater may be formed using 316L stainless steel.

[0088] The specific embodiments or other embodiments of the present disclosure described above are not mutually exclusive or different from each other. Any or all elements of the embodiments of the present disclosure described above may be combined or combined with each other in structure or function.

[0089] For example, the configuration "A" described in one embodiment and the drawings of the present disclosure and the configuration "B" described in another embodiment and the drawings of the present disclosure may be combined with each other. That is, although the combination between the configurations is not directly described, the combination is possible except when it is described that the combination is impossible.

[0090] Although the embodiments have been described with reference to a number of illustrative embodiments thereof, it will be appreciated that many other modifications and embodiments may be conceived by those skilled in the art that will fall within the scope of the principles of the present disclosure. More specifically, various changes and modifications may be made to the components and / or arrangements of the subject combination arrangement within the scope of the present disclosure, the drawings, and the appended claims. In addition to changes and modifications to the components and / or arrangements, alternative uses will also be readily apparent to those skilled in the art.

Claims

1. An aerosol generating device, comprising: a main body including an insertion space having an opening to allow a rod to be inserted into the insertion space; a heater pin protruding from an end of the insertion space toward the opening and configured to be inserted into the rod inserted into the insertion space; as well as a heater disposed in the cavity of the heater pin and configured to heat the heater pin to heat the rod inserted into the insertion space, The heater is formed of a material having a temperature coefficient of resistance (TCR) value less than or equal to 1500 ppm / °C.

2. The aerosol generating device according to claim 1, wherein: The heater comprises austenitic stainless steel.

3. The aerosol generating device according to claim 2, wherein: The heater comprises 316L stainless steel.

4. The aerosol generating device according to claim 2, wherein: The heater includes any one of 301 stainless steel, 301L stainless steel, 304 stainless steel, 304L stainless steel, 314L stainless steel, 316 stainless steel, 317 stainless steel and 317L stainless steel.

5. The aerosol generating device according to claim 1, wherein: The heater comprises any one of brass, nickel-chromium alloy, Kanthal alloy, constantan and manganese-copper.

6. The aerosol generating device according to claim 1, wherein: The TCR value of the material of the heater is in the range of 2 ppm / °C to 1100 ppm / °C.

7. The aerosol generating device according to claim 1, wherein: The cavity and the heater are elongated along a longitudinal direction of the heater pin.

8. The aerosol generating device according to claim 7, in, The heater is wrapped around an elongated support rod inserted into the cavity.

9. The aerosol generating device according to claim 8, wherein: The support rod comprises alumina.

10. An aerosol-generating device according to claim 1, further comprising an adhesive material for filling the cavity to secure the heater to the heater pin.

11. The aerosol generating device according to claim 10, wherein: The bonding material is a ceramic bonding agent.

12. The aerosol generating device according to claim 11, wherein: The ceramic binder includes alumina ceramic.

13. The aerosol generating device according to claim 1, wherein: The heater pin comprises zirconium oxide.

14. An aerosol generating device comprising: a main body including an insertion space having an opening to allow a rod to be inserted into the insertion space; a heater pin protruding from an end of the insertion space toward the opening and configured to be inserted into the rod inserted into the insertion space; a heater wrapped around an elongated support rod inserted into the cavity of the heater pin, wherein the heater is configured to heat the heater pin to heat the rod inserted into the insertion space; and an adhesive material injected into the cavity to secure the support rod and the heater to the heater pin, wherein the heater pin is formed of zirconium oxide, wherein the bonding material is a ceramic adhesive comprising alumina ceramics, Wherein, the support rod is formed of alumina, and Wherein, the heater is formed by 316L stainless steel.

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