KR20230151623A - Heating device for aerosol generating apparatus - Google Patents

Abstract

The embodiment relates to a heating device, and in particular, a graphene layer as a heating element is provided at the top and bottom of the heat diffusion pipe to have different areas or area ratios to control the amount of heat transferred to the aerosol-forming article through the heat diffusion pipe. It relates to a heating device of an aerosol generating device.
The heating device of the aerosol generating device of the embodiment includes a heat diffusion pipe having a hollow formed in the vertical direction to form a heating space into which the aerosol-forming article is inserted, a heat diffusion pipe formed on the outer surface of the heat diffusion pipe, and a heat diffusion pipe formed at the top of the heat diffusion pipe. It includes a heating unit including a high-heating area and a low-heating area formed at the bottom of the heat diffusion pipe, and a pair of terminals for applying power to the heating unit.

Description

Heating device of aerosol generating device {HEATING DEVICE FOR AEROSOL GENERATING APPARATUS}

The embodiment relates to a heating device, and in particular, a graphene layer as a heating element is provided at the top and bottom of the heat diffusion pipe to have different areas or area ratios to control the amount of heat transferred to the aerosol-forming article through the heat diffusion pipe. It relates to a heating device of an aerosol generating device.

Aerosols are small liquid or solid particles that exist in suspension in the atmosphere and usually have a size of 0.001 to 1.0 ㎛. In particular, there are cases where people inhale aerosols derived from various types of cigarette-type aerosol-generating products. For example, in response to the needs of consumers who prefer cigarette-type regular cigarettes, electronic cigarettes that have the filter part of a regular cigarette and the shape of a cigarette part are also being proposed. This electronic cigarette uses the inhaled substances contained in the cigarette part as electronic cigarettes. When vaporized with a heater, the user inhales it through a filter unit that has the same configuration as a regular cigarette. 1 is a diagram for explaining an example of an aerosol generating device according to the prior art. Referring to FIG. 1, the aerosol generating device 100 is provided with a cavity 20 into which the cigarette-type aerosol-generating article 10 is inserted, and the cigarette-type aerosol-generating article 10 inserted into the aerosol generating device 100 is provided. In order to generate aerosol by heating, for example, a pipe-shaped heater 30 is provided on the outer periphery of the cavity 20. In addition, the aerosol generating device 100 includes a battery 40 for supplying power to the heater 30, and a control unit 50 configured to control the power supplied from the battery 40 to the heater 30. . In the above-described prior art, power is supplied from the battery 40 to the heater 30 under the control of the control unit 50, and the cigarette-type aerosol-generating article 10 is heated by the heat generated from the heater 30 to generate cigarette-type aerosol. An aerosol is generated from the aerosol-generating substrate within the generating article 10.

When using one heater 30 as in the prior art, the temperatures at the top and bottom of the heater 30 rise simultaneously, so it was not possible to control the temperatures at the top and bottom of one heater 30 differently. .

The embodiment is a heating device of an aerosol generating device that controls the amount of heat transferred to the aerosol-forming article through the heat diffusion pipe by providing a graphene layer as a heating element at the top and bottom of the heat diffusion pipe to have different areas or area ratios. The purpose is to provide.

The heating device of the aerosol generating device of the embodiment includes a heat diffusion pipe having a hollow formed in the vertical direction to form a heating space into which the aerosol-forming article is inserted, a heat diffusion pipe formed on the outer surface of the heat diffusion pipe, and a heat diffusion pipe formed at the top of the heat diffusion pipe. A heating portion including a high-heating region and a low-heating region formed at the bottom of the heat diffusion pipe, It includes a pair of terminals for applying power to the heating unit.

In addition, the heating unit preferably includes a heating layer made of graphene.

In addition, the high-heating area has a heating layer formed on the entire top of the heat diffusion pipe, and the low-heating area has a plurality of heating patterns that surround the outer surface of the lower end of the heat diffusion pipe and are spaced apart from each other. It is preferable to include a plurality of non-heat-generating regions that are missing or removed from the heating layer between the patterns, and a connecting heating pattern that is a heating layer that electrically connects the plurality of heating patterns and the high-heating region.

Additionally, the width of the non-heating area is preferably within the range of 2 to 15% of the width of the heating portion or heat diffusion pipe.

In addition, the high-heating area is formed at the top of the heat diffusion pipe, the low-heating area is formed at the bottom of the heat diffusion pipe, the high-heating area includes the highest heat-generating area, and the entire highest heat-generating area is made up of a heating layer, and the heat-generating area is formed at the bottom of the heat diffusion pipe. The area excluding the highest heating area is between the spiral heating coil pattern, which is a heating layer that surrounds the outer surface of the heat diffusion pipe in a spiral shape with the central axis in the upward direction along the outer surface of the heat diffusion pipe, and the unit coil of the spiral heating pattern. It is preferred to include a helical non-heating region with or without a heating layer.

Additionally, the width of the non-heating area is preferably within the range of 2 to 15% of the total width of the heating portion or heat diffusion pipe.

Additionally, it is preferable that the pair of terminals are formed in a high heat area.

The embodiment controls the amount of heat transferred to the aerosol-forming article through the heat diffusion pipe by providing a graphene layer as a heating element to have different areas or area ratios at the top and bottom of the heat diffusion pipe, and dissipating the heat from the aerosol-forming article. It has the effect of increasing the amount of mist from the initial puff to the latter puff.

1 is an internal configuration diagram illustrating an example of an aerosol generating device according to the prior art.
Figure 2 is a schematic diagram of processes for manufacturing a heating device according to the first embodiment.
Figure 3 is a front view of the heating device according to the first embodiment.
Figure 4 is a front view of the heating device according to the second embodiment.

Hereinafter, embodiments are described in detail through the drawings. However, this is not intended to be limiting to specific embodiments, and the described embodiments should be understood to include various modifications, equivalents, and/or alternatives of the embodiments. In connection with the description of the drawings, similar reference numbers may be used for similar components.

In this document, expressions such as “have,” “may have,” “includes,” or “may include” refer to the existence of the corresponding feature (e.g., a numerical value, function, operation, or component such as a part). , and does not rule out the existence of additional features.

In this document, expressions such as “A or B,” “at least one of A or/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together. . For example, “A or B”, “at least one of A and B”, or “at least one of A or B” (1) includes at least one A, (2) includes at least one B, or (3) it may refer to all cases including both at least one A and at least one B.

As used herein, expressions such as "first", "second", "first", or "second" may describe various elements in any order and/or importance, and may refer to one element as another. It is only used to distinguish from components and does not limit the components. For example, a first user device and a second user device may represent different user devices regardless of order or importance. For example, a first component may be renamed a second component without departing from the scope of rights described in this document, and similarly, the second component may also be renamed to the first component.

A component (e.g., a first component) is “(operatively or communicatively) coupled with/to” another component (e.g., a second component). When referred to as being “connected to,” it should be understood that any component may be directly connected to the other component or may be connected through another component (e.g., a third component). On the other hand, when a component (e.g., a first component) is said to be “directly connected” or “directly connected” to another component (e.g., a second component), It may be understood that no other component (e.g., a third component) exists between other components.

The expression “configured to” used in this document may mean, for example, “suitable for,” “having the capacity to,” or “having the capacity to.” It can be used interchangeably with ", "designed to," "adapted to," "made to," or "capable of." The term “configured (or set) to” may not necessarily mean “specifically designed to” in hardware. Instead, in some contexts, the expression “a device configured to” may mean that the device is “capable of” working with other devices or components.

Terms used in this document are merely used to describe specific embodiments and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions, unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field described in this document. Among the terms used in this document, terms defined in general dictionaries may be interpreted to have the same or similar meaning as the meaning they have in the context of related technology, and unless clearly defined in this document, they may be interpreted in an ideal or excessively formal sense. It is not interpreted. In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of this document.

In the present invention, the aerosol-forming article includes a filter unit having a series of laminated structures, a cooling unit, and an aerosol-forming base layer (e.g., at least one of cut paste, flavoring, nicotine, VG (vegetable glycerin), PG (propylene glycol), etc. It is a mixed substance containing the above). Aerosol-forming articles include conventional electronic cigarettes, filters, and the like.

The aerosol generating device according to the present invention includes a case with an open upper side and a cylindrical (cylindrical, square cylindrical) insertion space, and a heating device that is mounted in the insertion space of the case and performs heating in the hollow heating space. It is composed. The case has an airflow path that communicates the bottom or side of the insertion space and the heating space with the external space. An aerosol-forming article is inserted into or separated from the heating space and the insertion space. The aerosol-generating device is provided with a control device for supplying and de-energizing the heating device.

Figure 2 is a schematic diagram of processes for manufacturing a heating device according to the first embodiment.

The manufacturing process is the first process of preparing the heat diffusion pipe 210 in which the heating space is hollow in the vertical direction. The heat diffusion pipe is preferably made of a metal material with high thermal conductivity (eg, copper, aluminum, SUS, etc.). An aerosol-forming article is inserted from above to below the heating space of the heat diffusion pipe 210.

This is the second process of forming the heating layer 220 on the outer surface of the heat diffusion pipe 210 of the first process. The heating layer 220 is made of a graphene material that has electrical conductivity and thermal conductivity, and is formed by being deposited, laminated, attached, or printed on the outer surface of the heat diffusion pipe 210. In the second process, the heating layer 220 is uniformly formed on both the upper and lower outer surfaces of the heat diffusion pipe 210, and a pair of terminals 300 for applying power are formed on the heating layer 220. I order it.

Following the second process, a third process is performed to reduce the area of the heating layer 220 by removing a portion of the heating layer 220 on the lower end of the heat diffusion pipe 210. By reducing the area of the heating layer, a heating layer 220 with a larger area is formed at the upper end of the heat diffusion pipe 210 than at the lower end of the heat diffusion pipe 210, thereby becoming a high-heating area of the heating part and spreading heat. The lower end of the pipe 210 becomes a low-heating area of the heating unit, and the high-heating area and the low-heating area included in the heating unit are electrically connected to each other.

The entire high-heat area of the heating unit includes the heating layer 220.

The low-heat area of the heating unit generates heat between a plurality of stripe heating patterns 222, which are heating layers 220 that surround the outer surface of the heat diffusion pipe 210 and are spaced apart from each other, and a plurality of stripe heating patterns 222. A heat source that electrically connects a plurality of non-heat generating areas 212 (parts of the outer surface of the heat diffusion pipe 210) without or removed from the layer 220, a plurality of stripe heat generating patterns 222, and a high heat generating area. The layer 220 is composed of a connected heating pattern 224.

Figure 3 is a front view of the heating device according to the first embodiment.

The heating device includes a heat diffusion pipe 210 having a hollow structure in the direction in which the aerosol-forming article is inserted (up and down), a high heat area formed at the top of the outer surface of the heat spread pipe 210, and a continuous heat spreader at the bottom of the high heat area. It is comprised of a heating unit including a low heat generation area, and a pair of terminals 300 for applying power to the heating unit.

The heating layer 220 of the heating unit is made of graphene, a thermally conductive composite material with excellent conductivity, thermal conductivity, strength, and electrical properties. It is preferable that the high-heating area and the low-heating area of the heating unit each occupy 50% of the length (or width) of the entire heating unit or heat diffusion pipe 210. In addition, the width W (length in the vertical direction) of the non-heat generating area 212 of the low heat generating area is preferably within the range of 2 to 15% of the total width of the heating part or heat diffusion pipe 210. If the width (W) of the non-heating area 212 is less than 2%, there is almost no difference in the amount of heat generated between the high-heating area and the low-heating area, making it difficult to quickly raise the temperature of the upper end of the heat diffusion pipe 210 by 15%. If it exceeds, the difference in heating amount between the high-heating area and the low-heating area becomes too large, and the temperature of the low-heating area may not reach the target temperature of the heating device.

When the control device applies power to the heating device through the terminals 300 after the aerosol-forming article is inserted into the heating space, the temperature of the high-heat area increases rapidly at an initial time, so that the temperature of the high-heat area is higher than the temperature of the low-heat area. The target temperature (e.g., 250°C) is reached more quickly, and the temperature of the low-heat region is increased relatively gently. Due to this rapid rise in the high-heat area, the aerosol-forming article (or the top of the aerosol-forming article) corresponding to the top of the heat diffusion pipe 210 is also quickly heated to generate an aerosol, resulting in a significantly large amount of mist even in the user's first puff. to provide. As power is applied, while the high-heating area reaches and maintains the target temperature, the low-heating area reaches the target temperature, and heating is performed on the entire aerosol-forming article through the heat diffusion pipe 210, so that the second half of the user The puffs also provide a fairly large amount of mist. As described above, while receiving the same power supply, the heating device initially applies relatively more heat energy to the top of the aerosol-forming article than the bottom using high-heat and low-heat zones, and thereafter the entire aerosol-forming article is heated. This has the effect of controlling the temperature of the aerosol-forming article by maintaining it at the target temperature.

Figure 4 is a front view of the heating device according to the second embodiment.

The heating device includes a heat diffusion pipe 210 having a hollow structure in the direction in which the aerosol-forming article is inserted (up and down), a high heat area formed at the top of the outer surface of the heat spread pipe 210, and a continuous heat spreader at the bottom of the high heat area. It is configured to include a heating unit including a low heat generation area, and a pair of terminals 300 for applying power to the heating unit (or heating layer 230).

The high-heating area of the heating portion includes the highest heating area, and the entire highest heating area is comprised of the heating layer 230.

The area excluding the highest heating area of the heating part is a spiral heating coil, which is a heating layer 230 that surrounds the outer surface of the heat diffusion pipe 210 in a spiral shape with the central axis pointing upward along the outer surface of the heat diffusion pipe 210. Between the pattern 236 and the unit coils of the spiral heating coil pattern 236, there is a spiral non-heating region 214 in which the heating layer is removed or not. The highest heating area is not provided with a non-heating area. One end of the spiral heating coil pattern 236 is connected to the highest heating area.

The heating layer 230 of the heating unit is made of graphene, a thermally conductive composite material with excellent conductivity, thermal conductivity, strength, and electrical properties. It is preferable that the high-heating area and the low-heating area each occupy 50% of the length (or width) of the entire heating part or heat diffusion pipe 210. In addition, the width (W) of the non-heating area 214 is preferably within the range of 2 to 15% of the total width of the heating portion or heat diffusion pipe 210. If the width (W) of the non-heating area 214 is less than 2%, there is almost no difference in the amount of heat generated between the high-heating area and the low-heating area, making it difficult to quickly raise the temperature of the upper end of the heat diffusion pipe 210 by 15%. If it exceeds, the difference in heating amount between the high-heating area and the low-heating area becomes too large, and the temperature of the low-heating area may not reach the target temperature of the heating device.

When the control device applies power to the heating device through the terminals 300 after the aerosol-forming article is inserted into the heating space, the temperature of the high-heat area rapidly increases due to the temperature rise of the highest heat-generating area at an initial time, so that the temperature of the high-heat area increases. reaches the target temperature (e.g., 250°C) faster than the temperature of the low-heat region, and the temperature of the low-heat region rises relatively slowly. Due to this rapid rise in the high-heat area, the aerosol-forming article corresponding to the top of the heat diffusion pipe 210 is also quickly heated to generate an aerosol, providing a significantly large amount of mist even with the user's first puff. As power is applied, while the high-heating area reaches and maintains the target temperature, the low-heating area reaches the target temperature, and heating is performed on the entire aerosol-forming article through the heat diffusion pipe 210, so that the second half of the user The puffs also provide a fairly large amount of mist. As described above, while receiving the same power supply, the heating device initially applies relatively more heat energy to the top of the aerosol-forming article than the bottom using high-heat and low-heat zones, and thereafter the entire aerosol-forming article is heated. This has the effect of controlling the temperature of the aerosol-forming article by maintaining it at the target temperature.

3 and 4, the pair of terminals 300 is preferably electrically connected to the heating layers 220 and 230 in the high-heating area, and is electrically connected to the highest heating area among the high-heating areas in Figure 4. It is desirable to be

As explained above, it is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the claims. Of course, such changes are within the scope of the claims.

210: heat diffusion pipe 220, 230: Heating layer

Claims (7)

a heat diffusion pipe having a hollow formed in an upward and downward direction to form a heating space into which an aerosol-forming article is inserted;
a heating portion formed on the outer surface of the heat diffusion pipe and including a high heating area formed at the top of the heat diffusion pipe and a low heating area formed at the bottom of the heat diffusion pipe;
A heating device of an aerosol generating device, characterized in that it includes a pair of terminals for applying power to the heating unit. According to claim 1,
A heating device of an aerosol generating device, wherein the heating unit has a heating layer made of graphene. According to claim 2,
The high-heating area has a heating layer formed on the entire top of the heat diffusion pipe,
The low-heat area includes a plurality of heat-generating patterns that surround the outer surface of the lower end of the heat diffusion pipe and are spaced apart from each other, a plurality of non-heat-generating areas that are not in the heating layer or are removed between the plurality of heat-generating patterns, and a plurality of heat-generating regions. A heating device of an aerosol generating device, characterized in that it has a connected heating pattern, which is a heating layer that electrically connects the heating patterns and the high-heating area. According to claim 3,
A heating device of an aerosol generating device, wherein the width of the non-heating area is in the range of 2 to 15% of the width of the heating part or heat diffusion pipe. According to claim 2,
A high-heating area is formed at the top of the heat diffusion pipe,
A low-heat area is formed at the bottom of the heat diffusion pipe,
The high-heating area includes the highest heating area, and the entire highest heating area is composed of a heating layer,
The area excluding the highest heating area of the heating part is a spiral heating coil pattern, which is a heating layer that surrounds the outer surface of the heat diffusion pipe in a spiral shape with the upward direction as the central axis along the outer surface of the heat diffusion pipe, and the unit coil of the spiral heating pattern. A heating device of an aerosol generating device, characterized in that it includes a spiral non-heating area between which the heating layer is removed or without. According to claim 5,
A heating device of an aerosol generating device, characterized in that the width of the non-heating area is in the range of 2 to 15% of the total width of the heating part or heat diffusion pipe. The method according to any one of claims 1 to 6,
A heating device of an aerosol generating device, wherein a pair of terminals are formed in a high heat area.