CN118119300A - Device for generating aerosols - Google Patents

Abstract

An aerosol-generating device is disclosed. The aerosol-generating device comprises: a tube portion defining an insertion space and including a seating portion extending from the lower portion and an extension portion extending from the upper portion; and a barrel configured to be seated on the seating portion, wherein a lower surface of the extension is adjacent to an upper surface of the barrel when the barrel is seated on the seating portion, wherein the lower surface of the extension includes an inclined surface such that a gap between the barrel and the lower surface gradually increases toward an end of the extension.

Description

Device for generating aerosols

Technical Field

The present disclosure relates to an aerosol-generating device.

Background

An aerosol-generating device is a device that extracts certain components from a medium or substance by forming an aerosol. The medium may comprise a multicomponent material. The substance contained in the medium may be a multi-component flavouring substance. For example, the substance contained in the medium may include a nicotine component, an herbal component, and/or a coffee component. Recently, various researches have been conducted on aerosol generating devices.

Disclosure of Invention

Technical problem

It is an object of the present disclosure to address the above and other problems.

It is another object of the present disclosure to easily mount the cartridge to the body.

It is another object of the present disclosure to improve the sensitivity and accuracy of a sensor detecting an air flow.

It is another object of the present disclosure to prevent liquid droplets from entering the sensor.

Technical proposal

According to one aspect of the present disclosure for achieving the above object, the aerosol-generating device may comprise: a tube portion defining an insertion space and including a seating portion extending from a lower portion and an extension portion extending from an upper portion; and a barrel configured to be seated on the seating portion, wherein a lower surface of the extension is adjacent to an upper surface of the barrel when the barrel is seated on the seating portion, wherein the lower surface of the extension includes an inclined surface such that a gap between the barrel and the lower surface gradually increases toward an end of the extension.

Advantageous effects

According to at least one of the embodiments of the present disclosure, the cartridge may be easily mounted to the main body.

According to at least one of the embodiments of the present disclosure, the sensitivity and accuracy of the sensor for detecting the air flow may be improved.

According to at least one of the embodiments of the present disclosure, the inflow of liquid droplets into the sensor may be prevented.

Additional applications 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 disclosure will become apparent to those skilled in the art, it is to be understood that the detailed description and specific embodiments (such as the preferred embodiments of the disclosure) are given by way of example only.

Drawings

The above and other objects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

fig. 1 to 12 are diagrams showing examples of an aerosol-generating device according to an embodiment of the present disclosure.

Detailed Description

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, and the same or similar elements are denoted by the same reference numerals even though they are shown in different drawings, and redundant description thereof will be omitted.

In the following description, regarding constituent elements used in the following description, the suffixes "module" and "unit" are used only in view of convenience of description and have no meaning or function differentiated from each other.

In addition, in the following description of the embodiments disclosed in the present specification, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the embodiments disclosed in the present specification rather unclear. In addition, the drawings are provided only for better understanding of the embodiments disclosed in the present specification, and are not intended to limit the technical ideas disclosed in the present specification. Accordingly, the drawings include all modifications, equivalents, and alternatives falling within the scope and spirit of the present disclosure.

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

It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. On the other hand, when an element is referred to as being "directly connected to" or "directly coupled to" another element, there are no intervening elements present.

As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise.

Referring to fig. 1, the aerosol-generating device may comprise at least one of a battery 10, a control unit 20, a heater 30 or a cartridge 300. At least one of the battery 10, the controller 20, the heater 30, or the cartridge 300 may be disposed inside the aerosol-generating device. The cartridge 300 and the heater 30 may be arranged side by side to face each other. The internal structure of the aerosol-generating device is not limited to that shown.

The aerosol-generating device may comprise an insertion space 124 into which the rod 400 may be inserted. The rod 400 and the insertion space 124 may extend longer in a cylindrical shape. The insertion space 124 may be formed around the heater 30. The rod 400 may be inserted into the insertion space 124 and exposed to the outside of the aerosol-generating device. The interior of the rod 400 may include a medium formed from cut tobacco leaves, granules, platelets, and the like. The medium may be filled with about 70% of the particles. As a medium, the particles and the platelets may be mixed, or the cut tobacco leaves and the platelets may be mixed. The rod 400 may be referred to as an aerosol-generating member 400.

The battery 10 may supply power to operate at least one of the controller 20, the heater 30, or the cartridge 300. The battery 10 may supply the power required to operate a display, sensor, motor, etc. installed in the aerosol-generating device.

The control unit 20 may control the overall operation of the aerosol-generating device. The controller 20 may control the operation of at least one of the battery 10, the heater 30, or the cartridge 300. The control unit 20 may control the operation of a display, a sensor, a motor, etc. installed in the aerosol-generating device. The control unit 20 may determine whether the aerosol-generating device is in an operable state by checking the state of each of the components of the aerosol-generating device.

The heater 30 may generate heat by power supplied from the battery 10. The heater 30 may heat a rod 400 inserted into the aerosol-generating device.

Cartridge 300 may store a liquid. The cartridge 300 may generate an aerosol. The cartridge 300 may include a wick supplied with liquid and a heater configured to heat the wick to generate an aerosol in the cartridge 300. The aerosol generated in the cartridge 300 may be delivered to a user by a wand 400 inserted into the aerosol-generating device.

Referring to fig. 2 and 3, the body 100 may include an upper body 120 and a lower body 110. The upper body 120 may be located above the lower body 110. The lower body 110 may extend vertically. The main body 100 may house therein components for driving the device. The upper body 120 may provide an insertion space 124 that is open upward. The insertion space 124 may be located inside the upper body 120. The insertion space 124 may extend vertically. The insertion space 124 may be formed inside the upper body 120. The upper body 120 may be referred to as a tube portion 120.

The upper case 200 may have a hollow shape with an opened lower portion. The pipe portion 120 may be inserted into the hollow portion of the upper housing 200. The upper housing 200 may be detachably coupled to the main body 100. The upper case 200 may cover the pipe portion 120 to surround the pipe portion 120. The lateral portion 211 of the upper housing 200 may surround and cover the lateral wall 121 of the tube portion 120. The upper portion 212 of the upper housing 200 may cover the upper portion 180 of the tube portion 120 or the outer cap 180. When the upper housing 200 is coupled to the main body 100, the upper housing 200 may cover the main body 100 and the cartridge 300 together. The cartridge 300 may be disposed inside the upper housing 200.

The insertion hole 214 may be formed by opening the upper portion 212 of the upper housing 200. The insertion hole 214 may correspond to an opening of the insertion space 124. The cap 215 may be movably mounted on the upper portion 212 of the upper housing 200. The sliding hole 213 may be formed to extend from the insertion hole 214 to one side in the upper portion 212 of the upper housing 200. The cap 215 may move along the sliding hole 213. The cap 215 may open and close the insertion hole 214 and the insertion space 124. The rod 400 may be inserted into the insertion space 124 through the insertion hole 214.

The lateral wall 121 and the partition wall 122 may form a lateral portion of the tube portion 120. The lateral wall 121 and the partition wall 122 may be connected to each other. The lateral wall 121 may be covered by the inner surface of the upper housing 200. The partition wall 122 may separate the coupling space S and the insertion space 124 (see fig. 5).

The tube portion 120 may include a seating portion 130. The seating part 130 may extend to one side from a lower portion of one side of the pipe part 120 or a lower portion of the partition wall 122. The seating part 130 may be formed above the lower body 110. The bottom surface 321 (refer to fig. 5) of the cartridge 300 may be supported by being seated on the seating part 130.

The tube portion 120 may include an extension 140. The extension 140 may extend to one side from an upper portion of the partition wall 122. The extension 140 may cover the upper surface 322 of the cartridge 300 (see fig. 5). The extension 140 may extend in a direction in which the seating portion 130 is formed.

Referring to fig. 3 and 4, a coupling space S may be formed at one side of the pipe portion 120. The coupling space S may be defined by the seating portion 130 of the pipe portion 120, the partition wall 122, and the extension portion 140. The bottom of the coupling space S may be covered by the seating part 130. The lateral sides of the coupling space S may be covered by the partition walls 122 of the pipe portion 120. The upper side of the coupling space S may be covered by the extension 140. The coupling space S may be opened to the outside between the seating part 130 and the extension part 140.

The cartridge 300 may be inserted into the coupling space S and coupled to one side of the pipe portion 120. The bottom of the cartridge 300 may be seated on the seating part 130. One lateral side wall 323 of the cartridge 300 may face the partition wall 122 of the tube portion 120. The coupling 125 may be formed on the partition wall 122. One lateral sidewall 323 of the cartridge 300 may be coupled to the coupling 125. The other lateral side 324 of the cartridge 300 is exposed to the outside of the tube portion 120 and may be covered by the inner surface of the upper housing 200. The upper surface 322 of the cartridge 300 may be covered by the extension 140.

The cartridge 300 may have a first inlet 3011. The first inlet 3011 may be formed by opening an upper end of the cartridge 300. The first inlet 3011 may be in communication with the exterior of the cartridge 300. The extension 140 may cover the first inlet 3011 and the perimeter of the first inlet 3011. The extension 140 may be spaced apart from the first inlet 3011 by a predetermined distance to form a gap 146 or flow space 146 through which air may flow.

The user may put the stick 400 inserted into the insertion space 124 into the inlet and inhale air. In a state where the upper housing 200 is coupled to the main body 100, air may be introduced into the aerosol-generating device through the opening 201 formed in the upper housing 200. The introduced air may be introduced into the first inlet 3011 through the gap 146. Air may be introduced into the cartridge 300 through the first inlet 3011.

Referring to fig. 5, the partition wall 122 of the pipe portion 120 may partition the insertion space 124 and the coupling space S. The partition wall 122 may be disposed between the insertion space 124 and the coupling space S. The partition wall 122 may extend vertically. A lateral side wall 323 of the cartridge 300 may face a surface of the partition wall 122. One lateral side wall 323 of the cartridge 300 may be coupled to a coupling member 125 (see fig. 3) formed on the partition wall 122.

The tube portion 120 may provide an insertion space 124. The insertion space 124 may be formed inside the lateral wall 121 and the partition wall 122 of the pipe portion 120. The insertion space 124 may have a vertically elongated cylindrical shape. The upper end of the insertion space 124 may be opened to the outside. The lower end of the insertion space 124 may be opened and connected to the connection passage 123.

The cartridge 300 may include a first chamber C1. The first chamber C1 may store a liquid. The cartridge 300 may include a second chamber C2. The second chamber C2 may be separated from the first chamber C1. The second chamber C2 may be disposed below the first chamber C1.

The core 311 may be disposed in the second chamber C2. The core 311 may be connected to the first chamber C1. The wick 311 may receive liquid from the first chamber C1. The heater 312 may be disposed in the second chamber C2. The heater 312 may be wound around the core 311. The heater 312 may receive power from the battery 10 (refer to fig. 1). The heater 312 may heat the core 311. When the heater 312 heats the wick 311 supplied with the liquid, aerosol may be generated in the second chamber C2.

The cartridge 300 may have a first inlet 3011. The first inlet 3011 may be formed by opening one side of the upper surface 322 of the cartridge 300. The first inlet 3011 may be formed at a position offset from the first chamber C1 in the vertical direction.

The cartridge 300 may have a second inlet 3012. The second inlet 3012 may be formed by opening one side of the second chamber C2, and may communicate with the second chamber C2.

Cartridge 300 may include an inflow channel 302. The inflow channel 302 may be positioned between the first and second inlets 3011, 3012. The inflow channel 302 may connect the first and second inlets 3011, 3012. The inflow channel 302 may extend longer in the vertical direction. The inflow channel 302 may be formed in parallel with the first chamber C1.

The cartridge 300 may have an outlet 303. The outlet 303 may be formed by opening the second chamber C2. The outlet 303 may communicate the exterior of the cartridge 300 with the second chamber C2. The outlet 303 may be positioned to face the second inlet 3012 with respect to the second chamber C2. When the cartridge 300 is coupled to the tube portion 120, the outlet 303 may be connected to the connection channel 123. The outlet 303 may communicate the connection passage 123 with the second chamber C2. The discharge port 323a forming the outlet 303 may protrude from one side of the cartridge 300. When the cartridge 300 is coupled to the pipe portion 120, the discharge port 323a may be inserted into one end of the connection passage 123.

The extension 140 may be formed to extend to one side from an upper portion of the pipe portion 120. The upper surface 322 of the cartridge 300 may be covered by the extension 140. The lower surface 141 of the extension 140 may face the upper surface 322 of the cartridge 300. The lower surface 141 of the extension 140 may cover the first inlet 3011 and the perimeter of the first inlet 3011. A gap 146 may be formed between the lower surface 141 of the extension 140 and the first inlet 3011 and between the lower surface 141 of the extension 140 and the upper surface 322 of the cartridge 300. Gap 146 may be in communication with first inlet 3011. Gap 146 may be in communication with sensing bore 144.

The sensor 143 may be mounted inside the extension 140. The sensor 143 may be disposed between the lower surface 141 and the upper surface 142 of the extension 140. Sensor 143 may sense ambient airflow. As air flows into the inlet 3011, the sensor 143 may sense the flow of air. The sensor 143 may be a pressure sensor. The sensor 143 may sense the flow of air through a change in ambient pressure. The sensor 143 may be mounted on a substrate 145 disposed inside the extension 140, and may be electrically connected to the controller 20 (refer to fig. 1).

The sensing hole 144 may be formed by opening the lower surface 141 of the extension 140. The sensing hole 144 may be formed at a position corresponding to the sensor 143. The sensing bore 144 may communicate the gap 146 with the sensor 143. The sensor 143 may sense a change in the air pressure in the sensing hole 144 such that the control unit 20 (refer to fig. 1) determines that air flows into the first inlet 3011.

Air may flow from gap 146 to first inlet 3011. Air introduced into the first inlet 3011 may sequentially pass through the inflow channel 302 and the second inlet 3012 to be introduced into the second chamber C2. The air introduced into the second chamber C2 may be discharged to the outside of the cartridge 300 through the outlet 303 along with the aerosol generated near the core 311. The air discharged through the outlet 303 may be supplied to the insertion space 124 and the stick 400 inserted into the insertion space 124 through the connection passage 123.

Referring to fig. 5 to 7, the lower surface 141 of the extension 140 may include an inclined surface 1411. The inclined surface 1411 may be inclined from the end toward the tube portion 120 such that the interval from the cartridge 300 is gradually narrowed. Thus, gap 146 may become progressively narrower as it approaches tube portion 120. The inclined surface 1411 may be inclined to extend from the upper side toward the lower side toward the pipe portion 120 from one end of the inclined surface 1411.

The lower surface 141 of the extension 140 may include a planar surface 1412. The planar surface 1412 may extend from an end of the inclined surface 1411 adjacent the tube portion 120 to the tube portion 120. The planar surface 1412 may extend horizontally to the upper surface 322 of the cartridge 300.

Accordingly, it may be easier to insert the cartridge 300 into the coupling space S to couple it with the main body 100. The inclined surface 1411 may guide the cartridge 300 such that the cartridge 300 is inserted into the coupling space S. When the cartridge 300 is inserted into the coupling space S, even though the cartridge 300 is in contact with the extension 140, the cartridge 300 is in contact with the inclined surface 1411 and slides to guide the coupling space S. The cartridge 300 may be guided to the coupling space S by the inclined surface 1411 and coupled with the coupling 125 (see fig. 3).

Referring to fig. 8, based on the vertical direction, a first distance t1 of gap 146 from inclined surface 1411 to upper surface 322 of cartridge 300 is from planar surface 1412 to cartridge 300. Which may be greater than the second distance t2 of gap 146 to upper surface 322. The first inlet 3011 formed on the upper surface 322 of the cartridge 300 may be located below the inclined surface 1411. The first inlet 3011 may be located in a position that is not aligned with the planar surface 1412 relative to vertical.

Accordingly, resistance to air flowing from the gap 146 to the first inlet 3011 can be reduced, and air can be introduced into the first inlet 3011 more smoothly. Further, the liquid droplets leaking from the cartridge 300 can be prevented from flowing into the sensor 143 through the sensing hole 144.

The sensing aperture 144 may be formed by opening the planar surface 1412. The sensing bore 144 may be in communication with the gap 146. The sensor 143 may be disposed at a position corresponding to the sensing hole 144. The sensor 143 may sense a change in the air pressure of the sensing hole 144. As air flows from gap 146 to first inlet 3011, the change in air pressure may be greater at gap 146 between planar surface 1412 and upper surface 322 of cartridge 300 than at gap 146 between inclined surface 1411 and upper surface 322 of cartridge 300. Therefore, the sensitivity and accuracy of the sensor 143 can be improved.

Therefore, the coupling of the cartridge 300 is convenient, air can be smoothly introduced into the inside of the cartridge 300, and the accuracy of the sensor 143 can be maintained or improved.

Referring to fig. 9, the first inlet 3011 may be formed by opening an upper surface 322 of the cartridge 300. The first inlet 3011 may be disposed above the first chamber C1. The first inlet 3011 may be located below the planar surface 1412. The sensing aperture 144 may be formed by opening the planar surface 1412. The first inlet 3011 may face the sensing aperture 144 formed in the planar surface 1412.

The inflow channel 302 may include a first inflow channel 3021 and a second inflow channel 3022. One end of the first inflow passage 3021 may be connected to the first inlet 3011. The first inflow passage 3021 may extend left and right above the first chamber C1. The first inflow channel 3021 may extend from the first inlet 3011 to the second inflow channel 3022. The second inflow passage 3022 may extend vertically along a lateral portion of the first chamber C1. An upper end of the second inflow channel 3022 may be connected to the other end of the first inflow channel 3021. Air may flow from the gap 146 through the first inlet 3011, the first inflow channel 3021, and the second inflow channel 3022 in this order.

Thus, as air flows from gap 146 into first inlet 3011, the change in air pressure of sensing bore 144 may be greater. Further, the coupling of cartridge 300 may be convenient and may improve the sensitivity and accuracy of sensor 143.

Referring to fig. 10 and 11, the lower surface 141 of the extension 140 may include a flat surface 1412 and an inclined surface 1411. The inclined surface 1411 may be formed at a position corresponding to the first inlet 3011, and the flat surface 1412 may be formed at a position corresponding to the first chamber C1. Gap 146 may be formed between inclined surface 1411 and upper surface 322 of cartridge 300. The spacing of gap 146 between inclined surface 1411 and upper surface 322 of cartridge 300 is greater than the spacing between gap 146 between planar surface 1412 and upper surface 322 of cartridge 300.

The sensing aperture 144 may be formed in the planar surface 1412 and may be adjacent to the inclined surface 1411. Alternatively, the sensing hole 144 may be formed in the inclined surface 1411. The first inlet 3011 may be formed below the inclined surface 1411. The sensing bore 144 and the first inlet 3011 may face each other. The inclined surface 1411 may direct air to flow into the sensing bore 144 and the first inlet 3011.

Accordingly, air can be smoothly introduced into the cartridge 300, and the sensitivity and accuracy of the sensor 143 can be improved.

Referring to fig. 11 and 12, layer 147 may block sensing orifice 144. Layer 147 may be disposed between sensing orifice 144 and sensor 143. Layer 147 may be in contact with the sensing portion of sensor 143. Layer 147 may be breathable. Layer 147 may be a porous layer. Air a may pass through layer 147. As air is introduced into the first inlet 3011 from the gap 146, ambient air passes through the layer 147 and changes in air pressure around the sensing orifice 144 may increase.

Therefore, in order to improve mountability of the cartridge 300, the inclined surface 1411 is formed, and even if a change in the ambient air pressure is reduced due to an increase in the size of the gap 146, the sensitivity and accuracy of the sensor 143 can be improved.

Layer 147 may be a film having waterproof properties. Each of the plurality of holes 1474 formed in the layer 147 has a size sufficient to allow the air a to pass therethrough, but may be formed as particles smaller than the liquid B. For example, layer 147 may be a membrane that selectively allows certain components to pass therethrough. For example, layer 147 may be a GORE-TEX film.

Thus, air a passes through layer 147, but liquid B layer 147 may prevent liquid from passing through layer 147 and into sensor 143. Further, malfunction of the sensor 143 caused by liquid in the air flowing into the sensor 143 and accumulated can be prevented.

Referring to fig. 1 to 12, according to one aspect of the present disclosure, there may be provided an aerosol-generating device, which may include: a tube portion defining an insertion space and including a seating portion extending from a lower portion and an extension portion extending from an upper portion; and a barrel configured to be seated on the seating portion, wherein a lower surface of the extension is adjacent to an upper surface of the barrel when the barrel is seated on the seating portion, wherein the lower surface of the extension includes an inclined surface such that a gap between the barrel and the lower surface gradually increases toward an end of the extension.

According to another aspect of the disclosure, wherein the cartridge may include an inlet at an upper surface of the cartridge.

According to another aspect of the disclosure, the aerosol-generating device may further comprise a sensor disposed at the extension and configured to sense airflow.

According to another aspect of the present disclosure, the aerosol-generating device may further include a sensing hole formed at a lower surface of the extension at a position corresponding to the sensor.

According to another aspect of the present disclosure, wherein the lower surface of the extension portion may further include a flat surface extending horizontally between the inclined surface and a portion of the pipe portion intersecting the extension portion.

According to another aspect of the disclosure, wherein a first distance between the inclined surface and the upper surface of the barrel at the end of the extension may be greater than a second distance between the flat surface and the upper surface of the barrel.

According to another aspect of the present disclosure, wherein the sensing hole may be formed at the flat surface.

According to another aspect of the present disclosure, wherein the inlet may be formed at a position corresponding to the inclined surface and not aligned with the sensing hole.

According to another aspect of the disclosure, wherein the cartridge may comprise: a first chamber configured to store a liquid; a second chamber disposed below the first chamber; a wick disposed in the second chamber and configured to receive liquid from the first chamber; a heater configured to heat the wick; an outlet opening from the second chamber into the insertion space; and an inflow channel extending from the inlet to the second chamber in a direction parallel to a longitudinal direction of the first chamber.

According to another aspect of the disclosure, wherein the inlet may be positioned facing the sensing aperture.

According to another aspect of the disclosure, wherein the cartridge may comprise: a first chamber configured to store a liquid, wherein the inlet is positioned above the first chamber; a second chamber disposed below the first chamber; a wick disposed in the second chamber and configured to receive liquid from the first chamber; a heater configured to heat the wick; an outlet opening from the second chamber into the insertion space; a first inflow passage extending in a direction parallel to a longitudinal direction of the first chamber and opening into the second chamber; and a second inflow passage formed above the first chamber and connecting the inlet to the first inflow passage.

Certain embodiments of the above disclosure or other embodiments are not mutually exclusive or different from each other. Any or all of the elements of the above disclosed embodiments may be combined with one another or with one another in configuration or function.

For example, the configuration "a" described in one embodiment of the present disclosure and the drawing and the configuration "B" described in another embodiment of the present disclosure and the drawing may be combined with each other. That is, although the combination between the configurations is not directly described, the combination is possible except the case where the combination is not described.

While embodiments have been described with reference to a number of exemplary embodiments thereof, 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 (11)

1. An aerosol-generating device, the aerosol-generating device comprising:

a tube portion defining an insertion space and including a seating portion extending from a lower portion and an extension portion extending from an upper portion; and

A barrel configured to be seated on the seating portion, wherein a lower surface of the extension is adjacent to an upper surface of the barrel when the barrel is seated on the seating portion,

Wherein the lower surface of the extension includes an inclined surface such that a gap between the barrel and the lower surface gradually increases toward an end of the extension.

2. An aerosol-generating device according to claim 1, wherein the cartridge comprises an inlet at an upper surface of the cartridge.

3. An aerosol-generating device according to claim 2, further comprising a sensor disposed at the extension and configured to sense airflow.

4. An aerosol-generating device according to claim 3, further comprising a sensing aperture formed at a lower surface of the extension at a location corresponding to the sensor.

5. An aerosol-generating device according to claim 4, wherein the lower surface of the extension further comprises a planar surface extending horizontally between the inclined surface and the portion of the tube portion intersecting the extension.

6. An aerosol-generating device according to claim 5, wherein a first distance between the inclined surface and the upper surface of the cartridge at the end of the extension is greater than a second distance between the flat surface and the upper surface of the cartridge.

7. An aerosol-generating device according to claim 5, wherein the sensing aperture is formed at the planar surface.

8. An aerosol-generating device according to claim 4, wherein the inlet is formed at a position corresponding to the inclined surface and is not aligned with the sensing aperture.

9. An aerosol-generating device according to claim 8, wherein the cartridge comprises:

a first chamber configured to store a liquid;

A second chamber disposed below the first chamber;

a wick disposed in the second chamber and configured to receive liquid from the first chamber;

A heater configured to heat the wick;

An outlet opening from the second chamber into the insertion space; and

An inflow channel extending from the inlet to the second chamber in a direction parallel to the longitudinal direction of the first chamber.

10. An aerosol-generating device according to claim 7, wherein the inlet is positioned to face the sensing aperture.

11. An aerosol-generating device according to claim 10, wherein the cartridge comprises:

a first chamber configured to store a liquid, wherein the inlet is positioned above the first chamber;

A second chamber disposed below the first chamber;

a wick disposed in the second chamber and configured to receive liquid from the first chamber;

A heater configured to heat the wick;

an outlet opening from the second chamber into the insertion space;

A first inflow passage extending in a direction parallel to a longitudinal direction of the first chamber and opening into the second chamber; and

A second inflow channel formed above the first chamber and connecting the inlet to the first inflow channel.