Aerosol Generator

Abstract

The aerosol generating device according to the present disclosure includes a body including an insertion space having an opening for inserting a stick, a heater pin protruding from one end of the insertion space toward the opening and inserted into the stick inserted into the insertion space, and a heater disposed within the cavity of the heater pin for heating the heater pin to heat the stick inserted into the insertion space, the heater being made of a material having a temperature coefficient of resistance (TCR) of 1500 ppm / °C or less.

Description

[Technical Field]

[0001] The present disclosure relates to aerosol generating devices. [Background technology]

[0002] An aerosol generating device is used to extract a predetermined component from a medium or substance via an aerosol. The medium may contain a variety of components. The components contained in the medium may be flavorings of a variety of components. For example, the components contained in the medium may include nicotine, herbal, and / or coffee components. In recent years, much research has been conducted on such aerosol generating devices. Summary of the Invention [Problem to be solved by the invention]

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

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

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

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

[0007] Yet another object of the present disclosure is to improve the structural integrity of the heater assembly. [Means for solving the problem]

[0008] According to one aspect of the subject matter described in the present application, an aerosol generating device includes a body including an insertion space having an opening for inserting a stick, a heater pin protruding from one end of the insertion space toward the opening and inserted into the stick inserted into the insertion space, and a heater disposed within the cavity of the heater pin and heating the heater pin to heat the stick inserted into the insertion space, the heater being formed of a material having a temperature coefficient of resistance (TCR) of 1500 ppm / °C or less. [Effects of the Invention]

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

[0010] At least one of the embodiments of the present disclosure allows precise control of the heater temperature.

[0011] According to at least one of the embodiments of the present disclosure, it is possible to prevent moisture from entering the inside 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] At least one of the embodiments of the present disclosure can improve the structural integrity of the heater assembly.

[0014] Further scope of applicability of the present disclosure will become apparent from the following detailed description. However, since various changes and modifications within the spirit and scope of the present disclosure will be apparent to those skilled in the art, it should be understood that the detailed description and specific examples, such as preferred embodiments of the present disclosure, are given by way of example only. [Brief explanation of the drawings]

[0015] [Figure 1]FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 2] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 3] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 4] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 5] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 6] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 7] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 8] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 9] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. The same or similar components will be given the same reference numerals even if they are shown in different drawings, and redundant description thereof will be omitted.

[0017] The suffixes "module" and "section" for components used in the following description are used solely for the convenience of explanation of the specification. "Module" and "section" do not have different meanings or roles from each other.

[0018] Furthermore, in the following description of the embodiments disclosed herein, detailed descriptions of related known technologies may be omitted if they may obscure the gist of the embodiments disclosed herein. The accompanying drawings are provided to facilitate understanding of the embodiments disclosed herein, and do not limit the technical ideas disclosed herein. Therefore, the accompanying drawings should be interpreted as including all modifications, equivalents, and alternatives within the spirit and scope of the present disclosure.

[0019] Terms including ordinal numbers such as "first," "second," etc. may be used to describe various components, but it should be understood that the components are not limited by the terms. The terms are used only to distinguish one component from another.

[0020] When a component is said to be "connected" to another component, it will be understood that there may be other components in between, whereas when a component is said to be "directly connected" to another component, it will be understood that there are no other components in between.

[0021] The singular expression includes the plural expression unless the context clearly dictates otherwise.

[0022] 1 and 2, the aerosol generating device may include at least one of a battery 101, a control unit 102, and a sensor 103. At least one of the battery 101, the control unit 102, and the sensor 103 may be disposed inside the body 10 of the aerosol generating device.

[0023] The pipe 20 may be coupled to the upper side of the body 10. An insertion space 24 may be formed inside the pipe 20. The insertion space 24 may be open to the upper side. The insertion space 24 may be formed in a cylindrical shape. The stick 400 may be removably inserted into the insertion space 24.

[0024] The heater 33 may be disposed inside a heater pin 30 that protrudes upward from the cover 25 that forms the bottom of the pipe 20 toward the insertion space 24. The heater 33 may be a resistive heater. The heater 33 can heat the stick 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 can 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 can be inserted into the inside of the stick 400 by passing through the end of the stick 400. The stick 400 can be heated by the heater 33. A user can inhale air by holding the exposed end of the stick 400 in their mouth.

[0026] The battery 101 can supply power to operate the components of the aerosol generating device. The battery 101 can supply power to at least one of the control unit 102, the sensor 103, the induction coil 15, and the heater rod 30. The battery 101 can supply power necessary to operate the display, motor, etc. installed in the aerosol generating device.

[0027] The control unit 102 can control the overall operation of the aerosol generation device. The control unit 102 can control the operation of at least one of the battery 101, the induction coil 15, and the sensor 103. The control unit 102 can control the operation of a display, a motor, etc. installed in the aerosol generation device. The control unit 102 can check the status of each component of the aerosol generation device and determine whether the aerosol generation device is in an operable state.

[0028] The sensor 103 may sense the temperature of the heater 50. The control unit 102 may control the temperature of the heater 50 based on the temperature of the heater 50 sensed by the sensor 103. The control unit 102 may transmit information about the temperature of the heater 50 sensed by the sensor 103 to a user via a user interface.

[0029] 1, the heater 33 can be electrically connected to the battery 11. The heater 33 can receive current from the battery 11 and generate heat directly, without the need for an induction coil 14 (see FIG. 2).

[0030] 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 50 is a susceptor, and may be heated by a magnetic field generated by an AC current flowing through the induction coil 14. The magnetic field penetrates the heater 50 and may generate an eddy current within the heater 50. The current may generate heat in the heater 50.

[0031] 3 to 5, the pipe 20 may include a cover 25. The cover 25 forms the bottom of the pipe 20 and may cover the lower part 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 part 251 may be connected to the lower end of the pipe 20. The first cover part 251 may cover the bottom of the insertion space 24. The second cover part 252 may be connected to the first cover part 251. The second cover part 252 may be formed below the first cover part 251. The inner surface of the second cover part 252 may be recessed outwardly relative to the inner surface of the first cover part 251. A cover hole 254 may be formed on the inner side of the lower part 2522 of the second cover part 252. The cover hole 254 may be in communication with the hollow 34 of the heater pin 30.

[0033] The heater pin 30 may protrude upward from the bottom of the pipe 20 toward the opening of the insertion space 24. The heater pin 30 may extend vertically. The heater pin 30 may have a cylindrical shape. The upper end of the heater pin 30 may be formed to be pointed. The heater pin 30 may have a space therein into which the heater 33 can be inserted. The heater pin 30 may be made of a material that has 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 extend vertically. The pin body 31 may have a cylindrical shape. The pin body 31 may have a hollow 34 formed therein. The lower portion of the heater pin 30 may be open and communicate with the hollow 34. The hollow 34 may extend vertically. The hollow 34 may have a cylindrical shape.

[0035] The heater pin 30 may include a pin tip 32. The pin tip 32 may form the upper end of the heater pin 30. The pin tip 32 may be formed integrally with the pin body 31 on the upper side of the pin body 31. The pin tip 32 may have a shape that gradually becomes thinner as it goes upward. The pin tip 32 may include a pointed upper end. Therefore, the heater pin 30 can penetrate the stick S and fix the stick S.

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

[0037] The flange 35 may be formed with multiple steps. For example, the flange 35 may be formed with two steps. For example, the flange 35 may include a first flange 351 and a second flange 352. The first flange 351 may be located at the upper part of the flange 35. The second flange 352 may be located at the lower part of the flange 35. Below, the flange 35 including the first flange 351 and the second flange 352 will be described, but is not limited to this. The flange 35 may include a greater number of flanges. For example, the flange 35 may be formed with three or more steps.

[0038] The first flange 351 may be disposed above 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 the bottom of the pin body 31. The first flange 351 may protrude from the outer circumferential surface of the pin body 31 toward the outer side or radially outward. The first flange 351 may extend in the 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 from the outer circumferential surface of the pin body 31 toward the outer side or in the radially outward direction. The second flange 352 may protrude further toward the outer side or in the radially outward direction than the first flange 351.

[0040] Therefore, there may be a step 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 circumferentially and have a circular cross-sectional shape, and the second flange 352 may have a non-circular cross-section.

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

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

[0044] Therefore, the cover 25 and the flange 35 are joined together in a vertically interlocking manner and supported in the vertical direction, so that the heater pin 30 can be prevented from coming off the pipe 20, and structural safety can be ensured.

[0045] In addition, the cover 25 and the flange 35 can be joined so as to mesh with each other in the circumferential direction, thereby preventing the heater pin 30 joined to the pipe 20 from rotating (see FIG. 3).

[0046] The pipe 20 can be formed by insert injection molding. The heater pin 30, together with the heater 33, the support bar 332, and the bonding material 361, are inserted into an injection mold for the pipe 20, and after the lead wire 331 is removed from the mold, the injection material is injected into the mold and hardened, thereby manufacturing the pipe 20 coupled with the heater pin 30.

[0047] 5 to 7, the heater pin 30 can have an opening on the bottom side. A liquid bonding material 361 can be injected into the internal hollow 34 of the heater pin 30 via an injector. The bonding material 361 can be injected into the internal hollow 34 with the heater pin 30 turned upside down so that the opening 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 bar 332. The support bar 332 may support the heater 33 and maintain its shape.

[0049] Lead wires 331 can extend long from both ends of the heater 33. The heater 33 can receive power from a power source via the lead wires 331. The heater 33 is a resistive heater and can generate heat when power is received.

[0050] The heater 33 and support bar 332 can be inserted into the hollow 34 through an opening formed on the underside of the heater pin 30 with the heater pin 30 upside down. The heater 33 and support bar 332 can be inserted into the liquid bonding material 361 poured into the hollow 34. The support bar 332 and heater 33 can be completely immersed in the bonding material 361. Here, the heater 33 can maintain its shape when inserted into the bonding material 361 because it is wound around and supported by the support bar 332. Here, the lead wire 331 can extend from the heater 33 to the outside of the hollow 34 through the opening in the heater pin 30 and be exposed on the underside of the heater pin 30.

[0051] The support bar 332 may be arranged parallel to the pin body 31 within the hollow 34. The heater 33 may be arranged between the pin body 31 and the support bar 332 within the hollow 34. The support bar 332 and the heater 33 may be arranged to extend longitudinally along the direction in which the hollow 34 extends.

[0052] The bonding material 361 may fill gaps among the pin body 31, the support bar 332, and the heater 33 within the hollow 34. After the heater 33 and the support bar 332 are inserted into the hollow 34, the bonding material 361 may dry and harden for a predetermined time until it turns into a solid state. The bonding material 361 may be adhered to the inner surface of the pin body 31. The bonding material 361 may be adhered to the heater 33 and the support bar 332. The bonding material 361 may fix the heater 33 and the support bar 332 to the heater pin 30. The bonding material 361 may seal the lower opening of the heater pin 30. The lead wire 331 may be exposed downward through the bonding material 361 and the cover hole 254 (see FIG. 3) and connected to a power source.

[0053] The heater pin 30 may be made of ceramic. Because the heater pin 30 repeatedly contacts the stick 400, extends long, and houses the heater 33, the material may be selected taking into consideration mechanical strength, abrasion resistance, and heat resistance. For example, the heater pin 30 may be made of zirconia. Among ceramics, zirconia has the best mechanical strength at room temperature, a melting point of 2000°C or higher, and good hardness and abrasion resistance. Therefore, the heater pin 30 can maintain a stable shape with excellent durability despite repeated heating of the heater 33 and repeated contact with the stick 400.

[0054] The bonding material 361 may be non-conductive and made of a material with excellent heat and chemical resistance. For example, the bonding material 361 may be a ceramic bonding agent. Ceramic bonding agents may include, but are not limited to, polyurethane, amine, styrene copolymer, and resin. The liquid bonding material 361 may harden at room temperature over a predetermined period of time, but this may vary depending on the type and component ratio of the materials constituting the bonding material 361. The bonding material 361 is a ceramic bonding agent, which is compatible with and easily adheres to the heater pin 30 made of ceramic. Furthermore, the bonding material 361 maintains a stable shape due to its excellent durability despite repeated heating of the heater 33 and repeated contact with the stick 400.

[0055] The bonding material 361 may be an alumina ceramic, which is a ceramic material mainly composed of aluminum oxide (Al2O3). For example, the aluminum oxide content of the bonding material 361 may be 80% or more. Therefore, the bonding material 361 has high electrical insulation, resistance to thermal shock, high thermal conductivity, and excellent mechanical adhesive strength and corrosion resistance. In addition, the bonding material 361 can easily bond and seal the inside of the heater pin 30.

[0056] The support bar 332 may include aluminum oxide (Al2O3). Aluminum oxide is one of the raw ceramic materials, and has excellent rigidity, high electrical insulation, chemical safety, corrosion resistance, heat resistance, and low cost. Therefore, the support bar 332 does not short circuit with the heater 33 due to its electrical insulation properties, and there is almost no deformation when the heater 33 generates heat, allowing the heater 33 to be stably fixed. In addition, the support bar 332 has good compatibility with the bonding material 361, making it easier to bond.

[0057] The heater pin 30 may further include a recess 353. The recess 353 may be formed by recessing the inner surface of the heater pin 30 outward from the hollow 34 in the lateral direction around the opening of the heater pin 30. The recess 353 may be formed by recessing the inner surface of the heater pin 30 in the radially outward direction. The recess 353 may extend in the circumferential direction. The cross-sectional shape of the recess 353 may be, but is not limited to, a circle. The perimeter of the recess 353 may be greater than the perimeter of the hollow 34 in the cross-section.

[0058] The bonding material 361 may include a center portion 361a and a protrusion 361b. The liquid bonding material 361 may dry to form the center portion 361a aligned with the hollow 34 in a solid state. The center portion 361a may be cylindrical. The liquid bonding material 361 may be injected into the recess 353 to fill the recess. The liquid bonding material 361 injected into the recess 353 may dry to change to a solid state. The solid bonding material 361 filling the recess 353 may be defined as the protrusion 361b. The protrusion 361b may protrude laterally from the center portion 361a. The protrusion 361b may protrude radially outward from the center portion 361a. The center portion 361a may protrude above or below the protrusion 361b. The center portion 361a and the protrusion 361b may be adhered to the inner surface of the heater pin 30.

[0059] Therefore, the protrusion 361b provides a step in the gap between the center portion 361a and the inner surface of the heater pin 30, thereby preventing liquid from flowing into the gap between the bonding 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. TCR values ​​can be expressed in units of / °C or ppm / °C. The TCR value of a metal can gradually decrease as the temperature of the metal increases. The TCR values ​​described below are values ​​measured at metal temperatures of 50°C or less.

[0061] The TCR values ​​of nickel and lithium are 0.006 / °C or 6000 ppm / °C. The TCR value of iron is 0.005 / °C or 5000 ppm / °C. The TCR value of tin and tungsten is 0.0045 / °C or 4500 ppm / °C. The TCR value of calcium and silver is 0.0041 / °C or 4100 ppm / °C. The TCR value of platinum is 0.00392 / °C or 3920 ppm / °C. The TCR value of aluminum, lead, and copper is 0.0039 / °C or 3900 ppm / °C. The TCR value of zinc is 0.0037 / °C or 3700 ppm / °C. The TCR value of titanium is 0.00366 / °C or 3660 ppm / °C. The TCR value of gold is 0.0034 / °C or 3400 ppm / °C.

[0062] On the other hand, stainless steel, nichrome, Kanthal, Constantan, and manganin are strong and corrosion-resistant, so they rarely corrode, and they are heat-resistant, so they can withstand high temperatures. The melting point of stainless steel is about 1400-1500°C, that of nichrome is about 1400°C, that of Kanthal is about 1500°C, that of Constantan is about 1260°C, and that of manganin is about 960°C.

[0063] Stainless steel has good workability, making it easy to form coils, and is characterized by a fast heat generation rate compared to the heat generation area. When a voltage of a certain volt (V) is applied to a metal, the lower the resistance value, the greater the heat generation amount and the faster the heat generation rate. The specific resistance of stainless steel is approximately 6.9 x 10 at 20°C. -7 It can be Ω·m.

[0064] There are many types of stainless steel depending on the content of added materials. Stainless steel can be broadly divided into three types: ferritic, martensitic, and austenitic, depending on the structure of the base material. Austenitic stainless steel contains a large amount of nickel as well as chromium, and has good formability and corrosion resistance. Examples of austenitic stainless steel include, but are not limited to, 304 stainless steel, 314 stainless steel, 314L stainless steel, 316 stainless steel, 316L stainless steel, 317 stainless steel, and 317L stainless steel. Austenitic stainless steels generally have similar TCR values. For example, the TCR value of 304 stainless steel is 0.00105 / °C or 1050 ppm / °C. The TCR value of 316L stainless steel is 0.00092 / °C or 920 ppm / °C. The TCR value for 316 stainless steel is 0.000915 / °C or 915 ppm / °C. The TCR value for 314L stainless steel is 0.00088 / °C or 880 ppm / °C. The TCR values ​​for 317L and 317 stainless steel are 0.000875 / °C or 875 ppm / °C.

[0065] Nichrome has good workability, making it easy to form coils, and has the characteristic of fast heat generation. The specific resistance of nichrome is approximately 1.10 x 10 at 20°C. -6 The resistance is Ω·m. Nichrome can be designated as N60, N80, etc. depending on the ratio of nickel to chromium content, and the higher the nickel content, the lower the TCR tends to be. For example, for Nichrome N60, the TCR value is 0.000178 / ℃ or 178 ppm / ℃. As another example, for Nichrome N80, the TCR value is 0.000112 / ℃ or 112 ppm / ℃.

[0066] Kanthal has a very small TCR value, so its resistance change due to temperature is very small. Kanthal's TCR value is 0.00002 / °C or 20 ppm / °C. Kanthal's specific resistance is 20, which is approximately 1.4 x 10 -6 Ωm.

[0067] Constantan is an alloy made of nickel and copper. It has good processability and a very low TCR value, so it has the characteristics of very little resistance change due to temperature and a fast heat generation rate. The TCR value of Constantan is 0.000008 / ℃ or 8 ppm / ℃. The specific resistance of Constantan is approximately 4.9 x 10 at 20℃. -7 It can be Ω·m.

[0068] Manganin is an alloy made of copper, manganese, and nickel. Manganin has a very low TCR value, so it has the characteristics of a very small change in resistance with temperature and a fast heat generation rate. The TCR value of manganin is 0.000002 / ℃ or 2 ppm / ℃. The specific resistance of manganin at 20℃ is approximately 4.82 x 10 -7 It can be Ω·m.

[0069] Brass is an alloy of copper and zinc. The TCR value of brass is 0.0001 / ℃ or 1000 ppm / ℃. The melting point of brass is approximately 960℃. The resistivity of brass is 6.0×10 -8 ~8.0×10 -8 It can be Ω·m.

[0070] The TCR value of mercury is 0.0009 / ℃ or 900 ppm / ℃. However, mercury is liquid at room temperature, so it is not suitable as a heating element.

[0071] Referring further to FIG. 7, the material of the heater 33 can be selected taking into consideration its TCR value. The higher the TCR value, the more difficult it is to maintain a consistent setting and taste because the heater 33 generates heat and its resistance changes. However, the lower the TCR value of the heater 33, the less the resistance changes when the heater 33 receives voltage and generates heat, making it possible to more accurately reach the target temperature. To this end, the TCR value of the heater 33 can be set to 1500 ppm / °C or less. This allows the heater temperature to be accurately controlled and maintained, accurately sensed, and provide the user with a consistent taste.

[0072] The heater 33 may include the above-mentioned austenitic stainless steel, or may include any one of the above-mentioned brass, nichrome, kanthal, constantan, and manganin. Here, the TCR value of the heater 33 may be 2 ppm / °C to 1100 ppm / °C.

[0073] Referring to Figure 9, the table in Figure 9 shows the temperature change of a heater made of a specific material when a voltage was applied to repeatedly heat the heater to a target temperature of 326°C. The experiment was repeated by applying a voltage to the heater to heat it to a target temperature of 326°C, and then applying the voltage again after a delay of several seconds. The x-axis represents the number of heating cycles, and the y-axis represents the heater temperature (°C). Figure 9(a) shows the experiment using copper with a TCR value of 3900 ppm / °C, while Figure 9(b) shows the experiment using 316L stainless steel with a TCR value of 920 ppm / °C. It can be seen that the copper temperature rises above the target temperature with repeated heating, while the 316L stainless steel temperature remains closer to the target temperature than copper.

[0074] 1 to 9, an aerosol generating device according to one aspect of the present disclosure includes a body including an insertion space having an opening for inserting a stick, a heater pin protruding from one end of the insertion space toward the opening and inserted into the stick inserted into the insertion space, and a heater disposed in a cavity of the heater pin for heating the heater pin to heat the stick inserted into the insertion space. The heater is made of a material with a temperature coefficient of resistance (TCR) of 1500 ppm / °C or less.

[0075] The heater may include 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 one of brass, nichrome, kanthal, constantan, and manganin.

[0079] The TCR value of the heater material may be 2 ppm / °C to 1100 ppm / °C.

[0080] The hollow and the heater may extend along the longitudinal direction of the heater pin.

[0081] The heater may be wrapped around a long support bar inserted into the hollow.

[0082] The support bar may include aluminum oxide.

[0083] The aerosol generating device may further include a bonding material that fills the hollow and fixes the heater to the heater pin.

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

[0085] The ceramic adhesive may include an alumina ceramic.

[0086] The heater pin may comprise zirconia.

[0087] According to another aspect of the present disclosure, an aerosol generating device includes a body including an insertion space having an opening for inserting a stick, a heater pin protruding from one end of the insertion space toward the opening and inserted into the stick inserted into the insertion space, a heater wrapped around a long support bar inserted into a cavity of the heater pin and heating the heater pin to heat the stick inserted into the insertion space, and a bonding material injected into the cavity to fix the heater pin and the heater to the heater pin. The heater pin may be made of zirconia, the bonding material may be a ceramic adhesive containing alumina ceramic, the support bar may be made of aluminum oxide, and the heater may be made of 316L stainless steel.

[0088] The specific embodiments or other embodiments of the present disclosure described above are not mutually exclusive or distinct, and the structure or function of any or all elements of the embodiments of the present disclosure described above can be combined with other elements or combined with each other.

[0089] For example, configuration A described in one embodiment of the present disclosure and drawings and configuration B described in another embodiment of the present disclosure and drawings can be combined with each other. That is, even if a combination between configurations is not directly described, the combination is possible unless it is described that the combination is not possible.

[0090] While the embodiments have been described above in accordance with a number of exemplary embodiments, it should be understood that many other variations and embodiments are possible for those skilled in the art that fall within the scope of the principles of the present disclosure. More particularly, various modifications and variations are possible in the components and / or arrangements of the subject combinations within the scope of the present disclosure, the drawings, and the appended claims. In addition to the modifications and variations of the components and / or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. a body including an insertion space having an opening for inserting the stick; a heater pin protruding from one end of the insertion space toward the opening and inserted into the stick inserted into the insertion space; a heater disposed in the cavity of the heater pin to heat the heater pin so as to heat the stick inserted into the insertion space; The aerosol generating device, wherein the heater is made of a material having a temperature coefficient of resistance (TCR) of 1500 ppm / °C or less.

2. 10. The aerosol generating device of claim 1, wherein the heater comprises austenitic stainless steel.

3. 3. The aerosol generating device of claim 2, wherein the heater comprises 316L stainless steel.

4. 3. The aerosol generating device of claim 2, wherein the heater comprises 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. 2. The aerosol generating device according to claim 1, wherein the heater includes any one of brass, nichrome, kanthal, constantan, and manganin.

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

7. The aerosol generating device according to claim 1 , wherein the hollow and the heater extend along the longitudinal direction of the heater pin.

8. 8. The aerosol generating device according to claim 7, wherein the heater is wound around a long support bar inserted into the hollow.

9. The aerosol generating device of claim 8 , wherein the support bar comprises aluminum oxide.

10. The aerosol generating device according to claim 1 , further comprising a bonding material that fills the hollow and secures the heater to the heater pin.

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

12. The aerosol generating device of claim 11 , wherein the ceramic adhesive comprises an alumina ceramic.

13. The aerosol generating device according to claim 1 , wherein the heater pin comprises zirconia.

14. a body including an insertion space having an opening for inserting the stick; a heater pin protruding from one end of the insertion space toward the opening and inserted into the stick inserted into the insertion space; a heater wound around the long support bar inserted into the cavity of the heater pin, for heating the heater pin to heat a stick inserted into the insertion space; a bonding material injected into the cavity to secure the heater pin and the heater to the heater pin; the heater pin is made of zirconia; the bonding material is a ceramic adhesive containing an alumina ceramic; the support bar is made of aluminum oxide; The aerosol generating device, wherein the heater is made of 316L stainless steel.

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