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 an aerosol generating device.

Background Art

[0002] An aerosol generating device is for extracting a predetermined component from a medium or a substance through an aerosol. The medium can contain substances with various components. The substances contained in the medium can be flavor substances with various components. For example, the substances contained in the medium can include a nicotine component, a herb component, and / or a coffee component, etc. In recent years, many studies have been conducted on such aerosol generating devices.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The present disclosure aims to solve the above-described 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 flowing into the heater pins.

[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 safety of the heater assembly.

Means for Solving the Problems

[0008] According to one aspect of the subject matter described in this application, an aerosol generating apparatus includes a body including an insertion space having an opening for a stick to be inserted; 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, wherein the heater is 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 of the embodiments of this disclosure, an aerosol generating apparatus with improved heater and power efficiency can be provided.

[0010] According to at least one of the embodiments of this disclosure, the temperature of the heater can be precisely controlled.

[0011] According to at least one of the embodiments of this 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 this disclosure, it is possible to prevent the heater from malfunctioning.

[0013] According to at least one of the embodiments of this disclosure, the structural safety of the heater assembly can be improved.

[0014] Any additional applicable scope of this disclosure will become apparent from the following detailed description. However, since various changes and modifications within the spirit and scope of this disclosure will be readily apparent to those skilled in the art, the detailed description and specific embodiments, such as preferred embodiments of this disclosure, should be understood to be given only as examples. [Brief explanation of the drawing]

[0015] [Figure 1]A diagram showing an example of an aerosol generation device according to an embodiment of the present disclosure. [Figure 2] A diagram showing an example of an aerosol generation device according to an embodiment of the present disclosure. [Figure 3] A diagram showing an example of an aerosol generation device according to an embodiment of the present disclosure. [Figure 4] A diagram showing an example of an aerosol generation device according to an embodiment of the present disclosure. [Figure 5] A diagram showing an example of an aerosol generation device according to an embodiment of the present disclosure. [Figure 6] A diagram showing an example of an aerosol generation device according to an embodiment of the present disclosure. [Figure 7] A diagram showing an example of an aerosol generation device according to an embodiment of the present disclosure. [Figure 8] A diagram showing an example of an aerosol generation device according to an embodiment of the present disclosure. [Figure 9] A diagram showing an example of an aerosol generation device according to an embodiment of the present disclosure.

Embodiments for Carrying Out the Invention

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

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

[0018] In addition, in the following descriptions of the embodiments disclosed in this specification, when a detailed description of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. The accompanying drawings are provided to facilitate understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the accompanying drawings. Therefore, the accompanying drawings should be construed to include all modifications, equivalents, and alternatives included in the spirit and scope of the present disclosure.

[0019] Terms including ordinal numbers such as first, second, etc. can 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 for the purpose of distinguishing one component from another.

[0020] When referring to a certain component being "connected" to another component, it can be understood that other components may exist in the middle. On the other hand, when referring to a certain component being "directly connected" to another component, it can be understood that no other components exist in the middle.

[0021] Singular expressions include plural expressions unless otherwise indicated by the context.

[0022] Referring to FIGS. 1 and 2, the aerosol generating device can 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 can be disposed inside the body 10 of the aerosol generating device.

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

[0024] The heater 33 may be located inside a heater pin 30 that protrudes upward toward the insertion space 24 from a cover 25 forming the bottom of the pipe 20. 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. The user can inhale air by putting the exposed end of the stick 400 in their mouth.

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

[0027] The control unit 102 can control the overall operation of the aerosol generator. The control unit 102 can control the operation of at least one of the following: the battery 101, the induction coil 15, and the sensor 103. The control unit 102 can control the operation of displays, motors, and other components installed in the aerosol generator. The control unit 102 can check the status of each component of the aerosol generator and determine whether the aerosol generator is operational.

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

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

[0030] Referring to Figure 2, the aerosol generator 100 may include an induction coil 14. The induction coil 14 can surround the insertion space 24 and the heater 33. The induction coil 14 can cause the heater 33 to heat up. The heater 50 is a susceptor, and the heater 50 can heat up due to the magnetic field generated by the AC current flowing through the induction coil 15. The magnetic field penetrates the heater 50 and can generate eddy currents within the heater 50. The current can generate heat in the heater 50.

[0031] Referring to Figures 3 to 5, the pipe 20 may be equipped with a cover 25. The cover 25 forms the bottom of the pipe 20 and can cover the lower part of the insertion space 24. The cover 25 may be equipped with a first cover portion 251 and a second cover portion 252.

[0032] The first cover portion 251 can be connected to the lower end of the pipe 20. The first cover portion 251 can cover the bottom of the insertion space 24. The second cover portion 252 can be connected to the first cover portion 251. The second cover portion 252 can be formed on the underside of the first cover portion 251. The inner surface of the second cover portion 252 can be recessed outward more than the inner surface of the first cover portion 251. A cover hole 254 can be formed inside the lower part 2522 of the second cover portion 252. The cover hole 254 can communicate with the hollow 34 of the heater pin 30.

[0033] The heater pin 30 can protrude long upward from the bottom of the pipe 20 toward the opening of the insertion space 24. The heater pin 30 can extend long 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 inside into which a heater 33 can be inserted. The heater pin 30 can be manufactured from a material with excellent moisture resistance and heat resistance. For example, the heater pin 30 can be manufactured from a ceramic material.

[0034] The heater pin 30 may include a pin body 31. The pin body 31 may extend long in the vertical direction. The pin body 31 may have a cylindrical shape. The pin body 31 may have a hollow interior 34. The lower part of the heater pin 30 can be open and communicate with the hollow 34. The hollow 34 may extend long in the vertical direction. 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 tapers towards the top. The pin tip 32 may have a pointed upper end. Thus, the heater pin 30 can penetrate the stick S and secure the stick S.

[0036] The flange 35 can project outward from the heater pin 30. The flange 35 can project sideways from the lower end of the heater pin 30. The flange 35 can project radially outward from the heater pin 30. The flange 35 can be formed integrally with the heater pin 30.

[0037] The flange 35 may be formed in multiple stages. For example, the flange 35 may be formed in two stages. For example, the flange 35 may include a first flange 351 and a second flange 352. The first flange 351 may be located on the upper part of the flange 35. The second flange 352 may be located on the lower part of the flange 35. The flange 35 including the first flange 351 and the second flange 352 will be described below, but is not limited thereto. The flange 35 may include more than one flange. For example, the flange 35 may be formed in three or more stages.

[0038] The first flange 351 may be positioned above the second flange 352. The first flange 351 may be formed integrally with the second flange 352. The first flange 351 may be positioned below the pin body 31. The first flange 351 may project outward or radially outward from the outer circumferential surface of the pin body 31. The first flange 351 may extend circumferentially.

[0039] The second flange 352 may be positioned below the first flange 351. The second flange 352 may be positioned at the lower end of the heater pin 30. The second flange 352 may project outward or radially outward from the outer circumferential surface of the pin body 31. The second flange 352 may project further outward or radially outward 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, while the second flange 352 may have a non-circular cross-section.

[0042] The first cover portion 251 can surround and tightly adhere to the side surface of the first flange 351. The first cover portion 251 can cover or tightly adhere to the upper surface of the second flange 352. The upper surface of the first flange 351 can face the bottom of the insertion space 24 together with the first cover portion 251.

[0043] The second cover portion 252 can surround and tightly adhere to the side and outer lower part of the second flange 352. The second flange 352 can be positioned between the first cover portion 251 and the second cover portion 252 and supported in the vertical direction.

[0044] Therefore, the cover 25 and the flange 35 are joined so as to interlock in the vertical direction and are supported in the vertical direction, which prevents the heater pin 30 from detaching from the pipe 20 and ensures structural safety.

[0045] Furthermore, the cover 25 and the flange 35 can be joined so that they interlock in the circumferential direction. This prevents the heater pin 30, which is connected to the pipe 20, from rotating (see Figure 3).

[0046] The pipe 20 can be formed by insert injection molding. The heater pin 30 can be inserted into the injection mold for the pipe 20 together with the heater 33, support bar 332 and bonding material 361, and after removing the lead wire 331 from the mold, the injection material can be injected into the mold and allowed to solidify to produce the pipe 20 bonded with the heater pin 30.

[0047] Referring to Figures 5 to 7, the heater pin 30 can be opened on the lower side. 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 hollow 34 with the heater pin 30 covered so that the opening faces upward.

[0048] The heater 33 may be made of 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 can support the heater 33 and maintain its shape.

[0049] The 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 powered.

[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 covered. 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 is wound around the support bar 332 and supported by the support bar 332 so that it can maintain its shape when inserted into the bonding material 361. Here, the lead wire 331 can extend from the heater 33 to the outside of the hollow 34 through the opening of the heater pin 30 and be exposed on the underside of the heater pin 30.

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

[0052] The bonding material 361 can fill the gap between the pin body 31, support bar 332, and heater 33 within the hollow 34. After the heater 33 and support bar 332 are inserted into the hollow 34, the bonding material 361 can dry and harden for a predetermined time, becoming a solid. The bonding material 361 can be bonded and fixed to the inner surface of the pin body 31. The bonding material 361 can be bonded and fixed to the heater 33 and support bar 332. The bonding material 361 can fix the heater 33 and support bar 332 to the heater pin 30. The bonding material 361 can close the lower opening of the heater pin 30. The lead wire 331 passes through the bonding material 361 and the cover hole 254 (see Figure 3) and is exposed on the lower side, and can be connected to a power source.

[0053] The heater pin 30 can be made of ceramic. Since the heater pin 30 repeatedly contacts the stick 400, extends for a long distance, and houses the heater 33, the material can be selected considering mechanical strength, wear resistance, and heat resistance. For example, the heater pin 30 can be made of zirconia. Among ceramics, zirconia has the best mechanical strength at room temperature, a melting point of over 2000°C, and good hardness and wear 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 is non-conductive and can be formed from a material with excellent heat resistance and chemical resistance. For example, the bonding material 361 may be a ceramic adhesive. The ceramic adhesive may contain, but is not limited to, raw materials such as polyurethane, amine, styrene copolymer, and resin. The bonding material 361 in a liquid state can solidify at room temperature after a predetermined time, but this may vary depending on the type of raw materials that make up the bonding material 361 and the component ratio of those raw materials. Since the bonding material 361 is a ceramic adhesive, it is compatible with the heater pin 30, which is made of ceramic, and is easy to bond. Furthermore, it can maintain a stable external shape due to its excellent durability despite repeated heating of the heater 33 and repeated contact of the stick 400.

[0055] The bonding material 361 is an alumina ceramic, and may be 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 properties, is resistant to thermal shock, has high thermal conductivity, and has excellent mechanical adhesion 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 contain aluminum oxide (Al2O3). Aluminum oxide is one of the ceramic raw materials, possessing good rigidity, high electrical insulation, chemical safety, good corrosion and heat resistance, and low cost. Therefore, due to its electrical insulation properties, the support bar 332 does not short-circuit with the heater 33, and when the heater 33 generates heat, it undergoes almost no deformation, allowing the heater 33 to be stably fixed. Furthermore, it is compatible with the bonding material 361, making bonding easier.

[0057] The heater pin 30 may further include a recessed portion 353. The recessed portion 353 may be formed around the opening of the heater pin 30 by the inner surface of the heater pin 30 recessing outward from the hollow 34 with respect to the lateral direction. The recessed portion 353 may be formed by the inner surface of the heater pin 30 recessing radially outward. The recessed portion 353 may extend in the circumferential direction. The cross-sectional shape of the recessed portion 353 may be circular, but is not limited thereto. With respect to the cross-section, the circumference of the recessed portion 353 may be larger than the circumference of the hollow 34.

[0058] The bonding material 361 may include a central part 361a and a protruding part 361b. The bonding material 361 in liquid state can dry to form a central part 361a aligned with the hollow 34 in a solid state. The central part 361a may be cylindrical in shape. The bonding material 361 in liquid state can be injected into a recess 353 to fill the recess. The bonding material 361 injected into the recess 353 in liquid state can dry to change into a solid state. The solid bonding material 361 that has filled the recess 353 may be defined as a protruding part 361b. The protruding part 361b may project laterally from the central part 361a. The protruding part 361b may project radially outward from the central part 361a. The central part 361a may project vertically more than the protruding part 361b. The central part 361a and the protruding part 361b can be bonded to the inner surface of the heater pin 30.

[0059] Therefore, the protruding portion 361b provides a step in the gap between the central part 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 metal temperature increases. The TCR values ​​described below were measured at metal temperatures below 50°C.

[0061] The TCR values ​​for nickel and lithium are 0.006 / °C or 6000 ppm / °C. The TCR value for iron is 0.005 / °C or 5000 ppm / °C. The TCR values ​​for tin and tungsten are 0.0045 / °C or 4500 ppm / °C. The TCR values ​​for calcium and silver are 0.0041 / °C or 4100 ppm / °C. The TCR value for platinum is 0.00392 / °C or 3920 ppm / °C. The TCR values ​​for aluminum, lead, and copper are 0.0039 / °C or 3900 ppm / °C. The TCR value for 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 have high strength and corrosion resistance, so they rarely corrode, and they have high heat resistance, so they can withstand high temperatures well. The melting point of stainless steel is approximately 1400-1500°C, nichrome is approximately 1400°C, Kanthal is approximately 1500°C, Constantan is approximately 1260°C, and manganin is approximately 960°C.

[0063] Stainless steel is easy to process and form coils from, and it has the characteristic of heating up quickly relative to its heating surface area. When a voltage of a given volt (V) is applied to a metal, the lower the resistance, the greater the amount of heat generated, and the faster the heating rate can be. The resistivity of stainless steel at 20°C is approximately 6.9 × 10⁻⁶. -7 It could be Ω·m.

[0064] Stainless steel can exist in many forms depending on the content of the mixed materials. Stainless steel can be broadly classified into three types based on the composition of the base material: ferritic, martensitic, and austenitic. Austenitic stainless steel is a type of steel in which not only chromium but also nickel is added in large quantities, and it has good formability and corrosion resistance. Austenitic stainless steel can include, but is 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 / ℃ or 1050 ppm / ℃. The TCR value of 316L stainless steel is 0.00092 / ℃ or 920 ppm / ℃. The TCR value of 316 stainless steel is 0.000915 / °C or 915 ppm / °C. The TCR value of 314L stainless steel is 0.00088 / °C or 880 ppm / °C. The TCR values ​​of 317L stainless steel and 317 stainless steel are 0.000875 / °C or 875 ppm / °C.

[0065] Nichrome has good processability, making coil forming easy, and it also has the characteristic of heating up quickly. The resistivity of nichrome is approximately 1.10 × 10⁻¹⁰ at 20°C. -6 The TCR is Ω·m. Nichrome can be designated as N60, N80, etc., depending on the nickel and chromium content ratio, and the TCR tends to decrease as the nickel content increases. For example, in the case of nichrome N60, the TCR value is 0.000178 / ℃ or 178 ppm / ℃. As another example, in the case of nichrome N80, the TCR value is 0.000112 / ℃ or 112 ppm / ℃.

[0066] Kanthal has a very low TCR value, meaning its resistance changes very little with temperature. The TCR value of Kanthal is 0.00002 / °C or 20 ppm / °C. The resistivity of Kanthal at 20 ppm is approximately 1.4 × 10⁻¹⁰. -6 It is Ωm.

[0067] Constantan is an alloy composed of nickel and copper. Constantan has good workability and a very low TCR value, resulting in minimal resistance change with temperature and a rapid heat generation rate. The TCR value of constantan is 0.000008 / °C or 8 ppm / °C. The resistivity of constantan at 20°C is approximately 4.9 × 10⁻⁶. -7 It could be Ω·m.

[0068] Manganin is an alloy composed of copper, manganese, and nickel. Because manganin has a very low TCR value, its resistance changes very little with temperature, and it has a fast heat generation rate. The TCR value of manganin is 0.000002 / °C or 2 ppm / °C. The resistivity of manganin at 20°C is approximately 4.82 × 10⁻⁶. -7 It could be Ω·m.

[0069] Brass is an alloy composed of copper and zinc. The TCR value of brass is 0.0001 / °C or 1000 ppm / °C. The melting point of brass is approximately 960°C. The resistivity of brass is 6.0 × 10⁻⁶. -8 ~8.0×10 -8 It could be Ω·m.

[0070] The TCR value of mercury is 0.0009 / °C or 900 ppm / °C. However, since mercury is a liquid at room temperature, it is not suitable as a heat source.

[0071] Referring further to Figure 7, the material of the heater 33 can be selected considering the TCR value. The higher the TCR value, the more the heater 33 heats up and the change in resistance, making it difficult to maintain a constant setting and taste. However, the lower the TCR value of the heater 33, the less the change in resistance when the heater 33 heats up under voltage, and therefore the more accurately the target temperature can be reached. For this reason, the TCR value of the heater 33 can be set to 1500 ppm / °C or less. Thus, the heater temperature can be accurately controlled or maintained, the heater temperature can be accurately sensed, and a stable taste can be provided to the user.

[0072] The heater 33 may include the aforementioned austenitic stainless steel. Alternatively, the heater 33 may include one of the aforementioned 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 is applied to it repeatedly to generate heat, with a target temperature of 326°C. In this experiment, the method of applying voltage to the heater to generate heat, with a target temperature of 326°C, and then applying the voltage again after a time difference of several seconds was repeated. The x-axis represents the number of heating cycles, and the y-axis represents the heater temperature (°C). Figure 9(a) shows the experiment conducted with copper with a TCR value of 3900 ppm / °C, and Figure 9(b) shows the experiment conducted with 316L stainless steel with a TCR value of 920 ppm / °C. It can be seen that the more times the heating process is repeated, the higher the temperature of the copper becomes compared to the target temperature, while in the case of 316L stainless steel, the temperature is maintained closer to the target temperature than that of copper.

[0074] Referring to Figures 1 to 9, an aerosol generating apparatus according to one aspect of the present disclosure includes a body including an insertion space having an opening into which a stick is inserted; 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 in order to heat the stick inserted into the insertion space. The heater is formed of a material having a temperature coefficient of resistance (TCR) of 1500 ppm / °C or less.

[0075] The heater may be made of austenitic stainless steel.

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

[0077] The heater may include any one of the following: 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 be made of one of the following materials: brass, nichrome, kanthal, constantan, and manganin.

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

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

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

[0082] The support bar may include aluminum oxide.

[0083] The aerosol generating apparatus 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 alumina ceramics.

[0086] The heater pin may contain zirconia.

[0087] An aerosol generating apparatus according to another aspect of the present disclosure includes a body including an insertion space having an opening for a stick to be inserted; 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 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 support bar and the heater to the heater pin. The heater pin may be formed of zirconia, the bonding material may be a ceramic adhesive containing alumina ceramic, the support bar may be formed of aluminum oxide, and the heater may be formed of 316L stainless steel.

[0088] The specific or other embodiments of the above-mentioned embodiments of the present disclosure are not mutually exclusive or distinguishable. The specific or all elements of the above-mentioned embodiments of the present disclosure can be combined with or combined with other elements in terms of configuration or function.

[0089] For example, configuration A described in one embodiment of this disclosure and drawings and configuration B described in another embodiment of this disclosure and drawings can be combined with each other. That is, even if combinations between configurations are not directly described, such combinations are possible unless otherwise stated as impossible.

[0090] While the embodiments have been described above with reference to numerous exemplary examples, those skilled in the art in the field relating to the principles of this disclosure should understand that many other modifications and embodiments are possible. More specifically, a variety of modifications and variations are possible in the components and / or arrangements of the subject combinations within the scope of this disclosure, drawings, and appended claims. In addition to the modifications and variations of the components and / or arrangements, other applications will also become apparent to those skilled in the art.

Claims

1. A body including an insertion space having an opening for inserting a stick, A heater pin protrudes from one end of the insertion space toward the opening and is inserted into the stick inserted into the insertion space, A heater is provided within the cavity of the heater pin to heat the heater pin in order to heat the stick inserted into the insertion space. A bonding material for filling the cavity and fixing the heater to the heater pin, The heater is made of a material with a temperature coefficient of resistance (TCR) of 1500 ppm / °C or less. The heater pin includes a recessed portion at a position adjacent to the opening of the cavity, in which the inner surface of the heater pin is recessed radially outward from the cavity. The bonding material is an aerosol generating device that fills the depression.

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

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

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

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

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

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

9. The aerosol generating apparatus according to claim 8, wherein the support bar contains aluminum oxide.

10. The aerosol generating apparatus according to claim 1, wherein the bonding material is a ceramic adhesive.

11. The aerosol generating apparatus according to claim 10, wherein the ceramic adhesive includes alumina ceramic.

12. The aerosol generating apparatus according to claim 1, wherein the heater pin comprises zirconia.

13. A body including an insertion space having an opening for inserting a stick, A heater pin protrudes from one end of the insertion space toward the opening and is inserted into the stick inserted into the insertion space, A heater is wound around a long support bar inserted into the cavity of the heater pin, and heats the heater pin to heat a stick inserted into the insertion space, The bond material is injected into the cavity to fix the support bar and the heater to the heater pin, The heater pin is made of zirconia, The bonding material is a ceramic adhesive containing alumina ceramics. The support bar is made of aluminum oxide, The heater is made of 316L stainless steel. The heater pin includes a recessed portion at a position adjacent to the opening of the cavity, in which the inner surface of the heater pin is recessed radially outward from the cavity. The bonding material is an aerosol generating device that fills the depression.

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