KR20230056535A - Cartridge and device for generating aerosol with the same - Google Patents

Abstract

A cartridge and an aerosol generating device including the same are disclosed. A cartridge of the present disclosure includes a first chamber for storing a liquid; a second chamber through which air can pass; a wick extending from one side of the second chamber to the other side and receiving liquid from the first chamber; and a heating coil for heating the wick, wherein the wick is a silica wick, and the heating coil may include a cartridge having an electrical resistance of 1.0 ohm to 1.2 ohm.

Description

Cartridge and aerosol generating device including the same {CARTRIDGE AND DEVICE FOR GENERATING AEROSOL WITH THE SAME}

The present disclosure relates to a cartridge and an aerosol generating device including the same.

Aerosol generating devices are for extracting certain components from a medium or substance through an aerosol. The medium may contain materials of various components. Substances included in the medium may be flavor substances of various components. For example, the substance included in the medium may include a nicotine component, an herbal component, and/or a coffee component. Recently, many studies on these aerosol generating devices have been conducted.

The present disclosure aims to solve the foregoing and other problems.

Another objective may be to improve user satisfaction with puffing.

Another purpose may be to reduce excessive power consumption.

According to one aspect of the present disclosure for achieving the above object, a first chamber for storing a liquid; a second chamber through which air can pass; a wick extending from one side of the second chamber to the other side and receiving liquid from the first chamber; and a heating coil for heating the wick, wherein the wick is a silica wick, and the heating coil provides a cartridge having an electrical resistance of 1.0 ohm to 1.2 ohm.

According to at least one of the embodiments of the present disclosure, the user's satisfaction with puffing may be improved.

According to at least one of the embodiments of the present disclosure, excessive power consumption may be reduced.

Additional scope of applicability of the present disclosure will become apparent from the detailed description that follows. However, since various changes and modifications within the spirit and scope of the present disclosure can be clearly understood by 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 as examples only.

1 to 9 are diagrams illustrating examples of aerosol generating devices according to embodiments of the present disclosure.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted.

The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves.

In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes included in the spirit and technical scope of the present disclosure , it should be understood to include equivalents or substitutes.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

Referring to FIGS. 1 and 2 , the aerosol generating device 100 may include at least one of a battery 10, a controller 20, a heater 30, and a cartridge 40. At least one of the battery 10, the controller 20, the heater 30, and the cartridge 40 may be disposed inside the body 110 of the aerosol generating device 100.

The body 110 may have an insertion space 34 into which the stick 200 can be inserted. Insertion space 34 may be opened upward. Insertion space 34 may have a cylindrical shape elongated in the vertical direction. The heater 30 may be formed around the insertion space 34 . For example, the heater 30 may surround the insertion space 34 .

Referring to FIG. 1 , a battery 10, a controller 20, a cartridge 40, and a heater 30 may be arranged in a line. Referring to Figure 2, the cartridge 40 and the heater 30 may be arranged side by side to face each other. The internal structure of the aerosol generating device 100 is not limited to that shown.

The battery 10 may supply power so that at least one of the controller 20, the heater 30, and the cartridge 40 operates. The battery 10 may supply power necessary for the display, sensor, motor, etc. installed in the aerosol generating device 100 to operate.

The controller 20 may control the overall operation of the aerosol generating device 100. The controller 20 may control the operation of at least one of the battery 10 , the heater 20 and the cartridge 40 . The controller 20 may control the operation of the display, sensor, motor, etc. installed in the aerosol generating device 100. The controller 20 may check the state of each component of the aerosol generating device 100 to determine whether the aerosol generating device 100 is in an operable state.

The heater 30 may generate heat by power supplied from the battery 10 . The heater 30 may heat the stick 200 inserted into the insertion space 34 .

Cartridge 40 may generate an aerosol. The aerosol generated in the cartridge 40 may pass through the stick 200 inserted into the aerosol generating device 100 and be delivered to the user.

The lower part of the stick 200 is inserted into the insertion space 34, and the upper part may be exposed to the outside. The user may inhale air while holding the upper part of the stick 200 in the mouth. When the user inhales air through the stick 200, the air flows into the cartridge 40, is accompanied by aerosol, passes through the insertion space 34 and the stick 200 inserted into the insertion space 34, may be provided to the user.

Referring to FIG. 3 , the cartridge 40 may include a first container 41 and a second container 42 . The second container 42 may be coupled to an upper side of the first container 41 . The cartridge inlet 414 may be formed by opening one side of the cartridge 40 . The cartridge inlet 414 may be formed by opening one side of the first container 41 . The cartridge inlet 414 may be formed by opening one side of the second container 42 . The cartridge inlet 414 may communicate with the outside. Air outside the cartridge 40 may be introduced into the cartridge 40 through the cartridge inlet 414 .

Referring to FIGS. 4 to 6 , the cartridge 40 may include a first container 41 and a second container 42 . The first container 41 may be coupled to an upper side of the second container 42 . The plate 45 may be coupled between the first container 41 and the second container 42 or between the first container 41 and the frame 43 .

The first container 41 may include a first chamber C1 capable of storing liquid therein. The first container 41 surrounds the first chamber C1, and a lower portion of the first chamber C1 may be opened. The opening of the first chamber C1 may be covered by the plate 45 .

The first container 41 may include an inflow passage 412 through which air passes. The first chamber C1 and the inflow passage 412 may be separated from each other. The inflow passage 412 may extend vertically and long on one side of the first container 41 . The first chamber C1 and the inflow passage 412 may be formed parallel to each other.

The first container 41 may have a cartridge inlet 411 . The cartridge inlet 411 is formed by opening an upper portion of the first container 41 and may communicate with the inlet passage 412 . The cartridge inlet 411 may be in communication with the upper end of the inlet passage 412 . A lower end of the inlet passage 412 may communicate with the connection hole 451 , the frame passage 4310 and the chamber inlet 431 .

The second container 42 may be coupled to the lower portion of the first container 41 . The second container 42 may have a space 424 with an open top and a covered bottom. The frame 43 may be accommodated inside the space 424 of the second container 42 .

The second container 42 may have a cartridge outlet 422 . The cartridge outlet 422 may be formed on a lateral portion of the second container 42 . The cartridge discharge port 422 may be formed inside the discharge port 423 protruding from the side of the second container 42 in the thickness direction. The cartridge outlet 422 may communicate with the inner space 424 of the second container 42 .

The frame 43 may be inserted into the space 424 inside the second container 42 and combined with the second container 42 . The fastening member 426 protruding from the sidewall of the second container 42 into the space 424 may be fastened to the frame 43 to fix the frame 43 .

The frame 43 may include a second chamber C2 therein. The frame 43 surrounds the second chamber C2, and an upper portion of the second chamber C2 may be opened. An upper portion of the second chamber C2 may be covered by a plate 45 .

The frame 43 may have a chamber inlet 431 . The chamber inlet 431 may be formed by opening one surface of a side wall surrounding the second chamber C2. The chamber inlet 431 may communicate with the second chamber C2. The frame passage 4310 may be opened upward of the frame 43 . The chamber inlet 431 may be connected to one end of the frame passage 4310 . The frame passage 4310 extends downward from an upper end of the frame passage 4310 and may extend to the chamber inlet 431 in a curved manner.

The frame 43 may have a chamber outlet 432 . The chamber outlet 432 may be formed on a lateral portion of the frame 43 . The chamber outlet 432 may communicate with the second chamber C2. The chamber outlet 432 may be formed inside the port protruding from the side of the frame 43 in the thickness direction. The chamber outlet 432 may communicate with the second chamber C2. The chamber outlet 432 may be formed at a position corresponding to the cartridge outlet 422 . The chamber outlet 432 may be formed at a position opposite to the second chamber inlet 431 with respect to the second chamber C2. When the frame 43 is coupled to the second container 42, the chamber outlet 432 and the cartridge outlet 422 may communicate with each other.

The frame 43 may have a wick groove 434 therein. The wick groove 434 may communicate with the second chamber C2. The wick groove 434 may be formed by recessing the second chamber C2 to one side. The wick groove 434 may be formed as a pair. A pair of wick grooves 434 may be formed on both sides of the second chamber C2. A pair of wick grooves 434 may face each other around the second chamber C2. An upper portion of the wick groove 434 may be opened.

The wick 441 may have a cylindrical shape extending transversely to the second chamber C2. Both ends of the wick 441 may be inserted into and positioned in each of the pair of wick grooves 434 . The center of the wick 441 may be located in the second chamber C2. The wick 441 may extend from one side of the second chamber C2 to the other side. The wick 441 may be connected to the first chamber C1 and receive liquid from the first chamber C1. The wick 441 may be fixed by the frame 43 and the plate 45 in the wick groove 434 .

The heating coil 442 may wind the center of the wick 441 . The heating coil 442 may be wound along the longitudinal direction of the wick 441 . The heating coil 442 may be disposed in the second chamber C2. The heating coil 442 may be located between a pair of wick grooves 434.

The heating coil 442 may be an electrical resistance heater. The heating coil 442 generates heat due to internal resistance when current is supplied, and the heat may be emitted to the outside. The heating coil 442 may generate heat to heat the wick 441 . The heating coil 442 may be a conductor.

The lead 443 may be electrically connected to an end of the heating coil 442 . The leads 443 may be formed as a pair and electrically connected to both ends of the heating coil 442 . The lead 443 may extend from the end of the heating coil 442 to the outside of the wick 441 . The lead 443 may pass through the bottom of the frame 43 and be electrically connected to an electrode disposed on the bottom of the second container 42 . The battery 10 may heat the heating coil 442 by sequentially applying current to the lead 442 and the heating coil 442 . Lead 443 may be a conductor.

The heating coil 442 and the lead 443 may be formed of different materials. The lead 443 may be formed of a material having lower resistance than the heating coil 442 . The lead 443 may be formed of a material having a lower temperature coefficient of resistance (TCR) value than that of the heating coil 442 . The heating coil 442 may be formed of a material having a high TCR value, and the lead 443 may be formed of a material having a low TCR value.

For example, the heating coil 442 of the heater 45 may include any one of kanthal, nichrome, and stainless steel. As one of stainless steel, the heater 45 may include SUS316L material. For example, the lead 443 may include any one of nickel, gold, and silver. However, the material of the heating coil 442 and the lead 443 is not limited to the above example.

Accordingly, when a current flows, the amount of change in resistance of the lead 443 is relatively small, and high resistance stability can be obtained.

The plate 45 may be coupled between the first container 41 and the second container 42 or between the first container 41 and the frame 43 . The plate 45 of the frame 43 may cover and seal the open portion of the first chamber C1. The plate 45 may cover the top of the frame 43 . The plate 45 may cover and seal the open portion of the second chamber C2. The plate 45 may be disposed between the first chamber C1 and the second chamber C2 and separate the first chamber C1 and the second chamber C2.

The plate 45 may have a connection hole 451 on one side. The connection hole 451 may be located between the inflow passage 412 and the frame passage 4310 . The connection hole 451 may connect the inflow passage 412 and the frame passage 4310 .

The plate 45 may have a liquid inlet hole 454 . The liquid inlet hole 454 may be formed as a pair at a position corresponding to the wick groove 434 . A pair of liquid inlet holes 454 may be located above both ends of the wick 441 . The liquid phase inlet hole 454 may connect the first chamber C1 and the wick groove 434 . The wick 441 may be connected to the first chamber C1 through the liquid inlet hole 454 .

The hook groove 435 may be formed on the upper side of the chamber outlet 432 at a position adjacent to the chamber outlet 432 . The hook 453 may protrude downward from one side of the plate 45 . The hook 453 may be inserted into and fastened to the hook groove 435 formed in the upper portion of the frame 43 . The plate 45 is fastened to the frame 43 , and the first container 41 coupled to the second container 42 may press an edge portion of the plate 45 toward the frame 43 .

Air may be introduced into the cartridge 40 through the cartridge inlet 411 and discharged to the outside of the cartridge 40 through the cartridge outlet 412 . Air introduced into the cartridge 40 flows through the inflow passage 412, the connection hole 451, the frame passage 4310, the chamber inlet 431, the second chamber C2, the chamber outlet 432, and the cartridge outlet. 422 may be sequentially discharged to the outside.

When the heating coil 442 generates heat and heats the wick 441, aerosol may be formed in the second chamber C2 from the wick 441. The air passing through the cartridge 40 may accompany the aerosol in the second chamber C2 and be discharged through the cartridge discharge port 422 .

Referring to FIGS. 7 and 8 , a pair of wick grooves 443 may be formed on both sides of the second chamber C2. The distance L3 between the pair of wick grooves 443 may be defined as a distance between inner ends of each of the pair of wick grooves 443 based on the longitudinal direction of the wick 441 . The distance L3 between the pair of wick grooves 443 may be the same as the distance L3 from one side of the second chamber C2 to the other side or the width l3 of the second chamber C2. For example, the distance L3 between the pair of wick grooves 443 may be about 4.5 mm to about 5.4 mm. As another example, the distance L3 between the pair of wick grooves 443 may be about 4.9 mm.

The wick 441 may be extended to one side. The wick 441 may have an outer portion 441a and a central portion 441b. The outer portion 441a may be formed at both ends, and the central portion 441b may be formed between the pair of outer portion 441a.

Each of both ends of the wick 441 may be disposed by being inserted into each of the pair of wick grooves 443 . Each of the pair of outer portions 441a may be located in each of the pair of wick grooves 443, and the central portion 441b may be located inside the second chamber C2. The wick 441 may extend from one side of the wick groove 443 to the other side. The length L1 of the wick 441 may be longer than the distance L3 between the pair of wick grooves 443 . For example, the length L1 of the wick 441 may be about 6 mm to about 12 mm. As another example, the length of the wick 441 may be about 8 mm to about 10 mm. As another example, the length L1 of the wick 441 may be about 9 mm.

The wick 441 may be wet by receiving liquid from the first chamber C1 (see FIG. 5). The wick 441 may be formed of a material considering liquid absorption and heat resistance. For example, the wick 441 may be a cotton wick made of cotton. As another example, the wick 441 may be a silica wick made of silica fibers. Silica wick may contain 90% or more of silicon dioxide. Cotton wick may have relatively better liquid absorbency than silica wick. However, silica wick does not melt even at a high temperature of 1400 degrees Celsius, and has excellent heat resistance in a heat resistance range of about 700 degrees Celsius, so that it may have better heat resistance than cotton wick. When the wick 441 is a silica wick, it is possible to prevent an unpleasant burnt taste from being transmitted to the user due to the wick 441 being burnt by heat generated by the heating coil 442, and to realize a stable taste.

The heating coil 442 may wind the central portion 441b of the wick 441 along the longitudinal direction of the wick 441 . The central portion 441b may be disposed inside the heating coil 442, and the outer portion 441a may be disposed outside the heating coil 442.

The length L2 of the heating coil 442 may be defined as the length of the wick 441 in the longitudinal direction. The heating coil 442 may be disposed inside the second chamber C2. The length L2 of the heating coil 442 may be determined in consideration of the distance L3 from one side of the wick groove 443 to the other side. The length L2 of the heating coil 442 may be shorter than the distance L3 from one side to the other side of the wick groove 443 in which the wick 441 extends. For example, the heating coil 442 may have a length L2 of about 3.0 mm to 3.5 mm in the longitudinal direction of the wick 441 . As another example, the length L2 of the heating coil 442 may be about 3.25 mm. The length of the central portion 441b of the wick 441 may be the same as or similar to the length L2 of the heating coil 442 . Accordingly, the atomizing range of the wick 441 in the second chamber C2 may be increased.

9 is a graph schematically showing the amount of aerosol generated by the wick 441 and the heating coil 442 absorbing liquid from the first chamber C1 in the cartridge 40 . The amount of aerosol generated from the wick 441 can be characterized by mass loss per puff (ML) in milligrams. This may correspond to a measured mass reduction for the cartridge 40 due to a machine puff having fixed characteristics and a fixed voltage applied to the heating coil 442 . In terms of user satisfaction, a mass loss per puff of 8 mg is considered a good target.

The wick 441 is a wick 441 made of silica fiber, that is, a silica wick. 8 shows the results of the resistance of the heating coil 442 to the silica wick of 1.0 ohm, 1.1 ohm, 1.2 ohm, 1.3 ohm, 1.4 ohm, 1.5 ohm and 1.6 ohm. FIG. 8 shows a plurality of measured values for mass loss per puff while applying the same voltage to heating coils 442 having different resistance values. In addition, in FIG. 8, the trend is shown by connecting the average mass loss value per puff with a straight line.

It can be seen that the higher the resistance of the coil, the lower the power consumed for each puff tends to be. The lower the resistance of the heating coil 442, the higher the temperature of the coil, so that aerosol can be generated smoothly. On the other hand, as the resistance of the heating coil 442 increases, power consumption of the device decreases, but aerosol may not be sufficiently generated.

The heating coil 442 may have a resistance of about 1.0 ohm to about 1.3 ohm. As another example, the heating coil 442 may have a resistance of about 1.1 ohm to about 1.25 ohm. As another example, the heating coil 442 may have a resistance of about 1.1 ohm. Thus, close to the target mass loss per puff of 8 mg can be achieved.

7 to 9, the resistance value of the heating coil 442 is the magnetic permeability according to the material of the heating coil 442, the number of times the heating coil 442 winds the wick 441, and the heating coil 442 It may be affected by the thickness or thickness (gauge) of the wire, the length (L2) of the heating coil 442, the area of the area covered by the heating coil 442, and the like. As the number of times the heating coil 442 winds the wick 441 increases, the gauge of the heating coil 442 increases, and the length L2 of the heating coil 442 decreases, the heating coil 442 As the area of the surrounding wick 441 increases, the resistance value of the heating coil 442 may increase. The heating coil 442 may have a specification to have a resistance value of 1.0 ohm to 1.3 ohm in a predetermined length L2 range. Hereinafter, specifications of the heating coil 442 to have a resistance value of 1.0 ohm to 1.3 ohm will be described.

The heating coil 442 may form an outer diameter D2 of the center portion 441b by winding the center portion 441b of the wick 441 . The outer diameter D1 of the wick 441 may be defined as the outer diameter D1 of the outer portion 441a. An outer diameter D2 of the central portion 441b may be smaller than an outer diameter D1 of the outer portion 441a. For example, the outer diameter D1 of the outer portion 441a may be about 2 mm to about 3.5 mm. As another example, the outer diameter D1 of the outer portion 441a may be about 2.5 mm to about 3.0 mm. For example, the outer diameter D2 of the central portion 441b may be about 1.8 mm to about 2.2 mm. As another example, the outer diameter D2 of the central portion 441b may be about 2 mm. The area of the area covered by the heating coil 442 may be determined according to the outer diameter D2 of the central portion 441b.

As described above, the length L2 of the heating coil 442 may be determined in consideration of the distance L3 from one side of the wick groove 443 to the other side. For example, the length L2 of the heating coil 442 may be 3.0 mm to 3.5 mm. As another example, the length L2 of the heating coil 442 may be 3.25 mm.

The wires of the heating coil 442 do not contact each other in the longitudinal direction of the wick 441 and are spaced apart by a predetermined width w to wind the wick 441 . In the center portion 441b, the spacing w between the wires of the heating coil 442 may be 0.38 mm to 0.42 mm. Accordingly, shortage that may occur due to contact between wires of the heating coil 442 through which current flows may be prevented.

The heating coil 442 may wind the wick 441 within a predetermined length (L2) range and diameter (D2) range so that the wires do not interfere with each other in consideration of the area of the heated portion of the wick and the target resistance value. can For example, the heating coil 442 may wind the wick 441 7 to 9 times. As another example, the heating coil 442 may wind the wick 441 eight times.

The heating coil 442 may be formed of a suitable gauge and material to have a resistance value of 1.0 ohm to 1.3 ohm according to the specifications of the heating coil 442 described above. For example, the heating coil 442 may be formed of 20Ga to 30Ga. For example, the heating coil 442 may be formed of any one of 22Ga, 24Ga, 26Ga, 28Ga, and 30Ga. For example, the heating coil 442 may be formed of any one of metals such as kanthal, nichrome, and stainless steel. For example, the heating coil 442 may be formed of SUS316L, one of stainless steel. However, the gauge and material of the heating coil 442 may be suitably combined.

1 to 9, a cartridge according to an aspect of the present disclosure includes a first chamber for storing a liquid; a second chamber through which air can pass; a wick extending from one side of the second chamber to the other side and receiving liquid from the first chamber; and a heating coil for heating the wick, wherein the wick is a silica wick, and the heating coil may have an electrical resistance of 1.0 ohm to 1.2 ohm.

According to another aspect of the present disclosure, the heating coil has a length L2 of 3.0 mm to 3.5 mm in the longitudinal direction of the wick, and may wind the wick 7 to 9 times.

In addition, according to another aspect of the present disclosure, the wires of the heating coil are spaced apart from each other with a width w of 0.38 mm to 0.42 mm in the longitudinal direction of the wick and may wind the wick.

According to another aspect of the present disclosure, a pair of wick grooves are formed on both sides of the second chamber and both ends of the wick are respectively disposed, and the heating coil comprises the pair of wick grooves. The wick is wound between the wick grooves, and a length L3 from one of the pair of wick grooves to the other may be 4.7 mm to 5.1 mm.

According to another aspect of the present disclosure, the length L1 of the wick may be 6 mm to 12 mm.

According to another aspect of the present disclosure, the outer diameter D1 of the wick may be 2.5 mm to 3.0 mm.

In addition, according to another aspect of the present disclosure, the outer diameter D2 of the central portion of the wick on which the heating coil is wound is 1.9 mm to 2.1 mm, and the outer diameter of the outer portion of the wick on which the heating coil is not wound ( D1) may be 2.5 mm to 3.0 mm.

According to another aspect of the present disclosure, a lead extending from both ends of the heating coil to the outside of the wick, electrically connected to the heating coil, and formed of a material having a lower TCR value than the heating coil. can do.

According to another aspect of the present disclosure, the heating coil may be formed of any one of kanthal, nichrome, and stainless steel, and the lead may be formed of any one of nickel, gold, and silver.

An aerosol generating device according to an aspect of the present disclosure includes a body to which the cartridge is coupled; and an insertion space extending long from the inside of the body and communicating the cartridge and the outside.

Certain or other embodiments of the present disclosure described above are not mutually exclusive or distinct from each other. Certain embodiments or other embodiments of the present disclosure described above may be combined or combined in their respective components or functions (Certain embodiments or other embodiments of the disclosure described above are not mutually exclusive or distinct from each other. Any or all elements of the embodiments of the disclosure described above may be combined with another or combined with each other in configuration or function).

For example, configuration A described in a specific embodiment and/or drawing may be combined with configuration B described in another embodiment and/or drawing. That is, even if the coupling between components is not directly described, it means that coupling is possible except for cases where coupling is impossible (For example, a configuration "A" described in one embodiment of the disclosure and the drawings). and a configuration "B" described in another embodiment of the disclosure and the drawings may be combined with each other. Namely, although the combination between the configurations is not directly described, the combination is possible except in the case where it is described that the combination is impossible).

The above detailed description should not be construed as limiting in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention (although embodiments have been described with reference to a number of illustrative embodiments Its, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles of this disclosure.More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims.In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art).

Claims (10)

a first chamber for storing liquid;
a second chamber through which air can pass;
a wick extending from one side of the second chamber to the other side and receiving liquid from the first chamber; and
Including a heating coil for heating the wick,
The wick is a silica wick,
The heating coil is a cartridge having an electrical resistance of 1.0 ohm to 1.2 ohm. According to claim 1,
The heating coil,
A cartridge having a length (L2) of 3.0 mm to 3.5 mm in the longitudinal direction of the wick, and winding the wick 7 to 9 times. According to claim 2,
The wires of the heating coil are spaced apart from each other with a width (w) of 0.38 mm to 0.42 mm in the longitudinal direction of the wick and wind the wick. According to claim 2,
It is formed on both sides of the second chamber and includes a pair of wick grooves in which both ends of the wick are respectively disposed,
The heating coil,
Winding the wick between the pair of wick grooves,
The length (L3) from any one of the pair of wick grooves to the other is 4.7 mm to 5.1 mm of the cartridge. According to claim 4,
The length (L1) of the wick is a cartridge of 6mm to 12mm. According to claim 1,
The outer diameter (D1) of the wick is 2.5 mm to 3.0 mm of the cartridge. According to claim 6,
The outer diameter (D2) of the center of the wick on which the heating coil is wound is 1.9 mm to 2.1 mm,
An outer diameter (D1) of the outer portion of the wick on which the heating coil is not wound is 2.5 mm to 3.0 mm. According to claim 1,
A cartridge comprising a lead extending from both ends of the heating coil to the outside of the wick, electrically connected to the heating coil, and formed of a material having a lower TCR value than the heating coil. According to claim 8,
The heating coil,
It is formed of any one of kanthal, nichrome, and stainless steel,
Reid,
A cartridge formed of any one of nickel, gold and silver. The cartridge of claim 1;
a body to which the cartridge is coupled; and
An aerosol generating device comprising an insertion space extending from the inside of the body and communicating with the cartridge and the outside.

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