KR20230124121A - Heating device for aerosol generating apparatus - Google Patents

Abstract

The present invention relates to a heating device of an aerosol generating apparatus capable of rapidly heating an aerosol-forming article by resistive heating or induction heating using a heating layer composed of graphene and/or graphite having high thermal conductivity.
The heating device of the aerosol generating device of the present invention includes a main body forming a hollow heating space into which an aerosol-forming article is inserted and heated, and a susceptor including a heating layer including graphene or graphite and stacked on an outer surface of the main body. It is provided, and the heating layer is preferably within 10 μm.

Description

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

The present invention relates to a heating device, particularly heating of an aerosol-generating device enabling rapid heating of an aerosol-forming article by resistance heating or induction heating using a heating layer composed of graphene and/or graphite having high thermal conductivity. It's about the device.

Aerosols are small liquid or solid particles suspended in the air and usually have a size of 0.001 to 1.0 μm. In particular, there are cases where a person inhales aerosols derived from various types of cigarette-type aerosol-generating articles. For example, according to the demand of consumers who prefer cigarette-type conventional cigarettes, an electronic cigarette having a filter part and a cigarette part shape of a conventional cigarette has also been proposed. When vaporized by a heater, the user inhales through a filter unit having a configuration equivalent to that of a conventional cigarette.

1 is a view for explaining an example of an aerosol generating device according to the prior art. Referring to FIG. 1 , the aerosol generating device 100 has a cavity 20 into which a cigarette-type aerosol-generating article 10 is inserted, and the cigarette-type aerosol-generating article 10 inserted into the aerosol generating device 100 is In order to generate an aerosol by heating, for example, a heater 30 in the form of a pipe is provided on the outer circumference of the cavity 20. In addition, the aerosol generating device 100 includes a battery 40 for supplying power to the heater 30, and a controller 50 configured to control power supplied from the battery 40 to the heater 30. . In the prior art described above, 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 by the heater 30, thereby producing a cigarette-type aerosol. An aerosol is generated from an aerosol-generating substrate within the generating article 10 .

The heater 30 is a key element directly related to the user experience in the aerosol generating device, and in particular, it is necessary to improve the heat transfer capability to the aerosol generating article 10 inserted therein.

An object of the present invention is to provide a heating device for an aerosol generating device capable of rapidly heating an aerosol-forming article by resistance heating or induction heating using a heating layer composed of graphene and/or graphite having high thermal conductivity. do.

The heating device of the aerosol generating device of the present invention includes a main body forming a hollow heating space in which an aerosol-forming article is inserted and heated, and a susceptor including a heating layer including graphene or graphite and laminated on an outer surface of the main body. It is preferable that the thickness of the heating layer is within 10 μm.

Also, the thermal conductivity of the heating layer is preferably 4800 to 5300 W/mK.

In addition, it is preferable that the main body has a cylindrical shape by being coupled to each other at both ends after being rolled into a cylindrical shape.

In addition, it is preferable that the heating layer is equipped with an electrode unit and a temperature sensing unit.

In addition, the heating device preferably includes an induction heating coil spirally wrapped around the outer surface of the susceptor a plurality of times in a circumferential direction of the heating space.

The present invention enables rapid heating of an aerosol-forming article by resistance heating or induction heating using a heating layer composed of graphene and/or graphite with high thermal conductivity, and the heating layer with good thermal conductivity is It has the effect of distributing the temperature of the septa as a whole and increasing the taste and impact of the cigarette.

1 is an internal configuration diagram for explaining an example of an aerosol generating device according to the prior art.
2 is a perspective view of a heating device according to the present invention.
3 is an exploded view of a heating device according to the present invention.
4 is another embodiment of a heating device according to the present invention.

Hereinafter, the present invention will be described in detail through examples and drawings. However, it should be understood that this is not intended to limit the present invention to the specific embodiments, and includes various modifications, equivalents, and/or alternatives of the embodiments of the present invention. In connection with the description of the drawings, like reference numerals may be used for like elements.

In this document, expressions such as "has", "may have", "includes", or "may include" refer to the presence of a corresponding feature (eg, numerical value, function, operation, or component such as a part). , which does not preclude the existence of additional features.

In this document, expressions such as "A or B", "at least one of A and/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" includes (1) at least one A, (2) at least one B, Or (3) may refer to all cases including at least one A and at least one B.

Expressions such as "first", "second", "first", or "second" as used herein may modify various elements, in any order and/or importance, and may refer to one element as another. It is used to distinguish from components, but 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, without departing from the scope of rights described in this document, a first element may be called a second element, and similarly, the second element may also be renamed to the first element.

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 "connected to", it should be understood that the certain component may be directly connected to the other component or connected through another component (eg, a third component). On the other hand, when an element (eg, a first element) is referred to as being “directly connected” or “directly connected” to another element (eg, a second element), the element and the above It may be understood that other components (eg, third components) do not exist between the other components.

As used in this document, the expression "configured to" means "suitable for", "having the capacity to", depending on the situation. ", "designed to", "adapted to", "made to", or "capable of" can be used interchangeably. The term "configured (or set) to" may not necessarily mean only "specifically designed to" hardware. Instead, in some contexts, the phrase "device configured to" may mean that the device is "capable of" in conjunction with other devices or components.

Terms used in this document are only used to describe a specific embodiment, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly dictates 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, the terms defined in general dictionaries may be interpreted as having the same or similar meaning to the meaning in the context of the related art, and unless explicitly defined in this document, in an ideal or excessively formal meaning. not interpreted In some cases, even terms defined in this document cannot be interpreted to exclude the embodiments of this document.

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

An aerosol generating device according to the present invention includes a case with an open upper side and a tubular (cylindrical, rectangular tubular) insertion space formed therein, and a heating device installed in the insertion space of the case and heating the hollow heating space, It consists of The case is provided with an airflow path to communicate the bottom or side surfaces of the insertion space and the heating space with the external space. The aerosol-forming article is inserted into or separated from the heating space and the insertion space. The aerosol-generating device has a control device for supplying and disconnecting power to the heating device.

The heating device in the present invention may include only a hollow susceptor communicating with an air flow path on a bottom surface, and may additionally include a heating rod protruding upward from the bottom surface in the heating space and such a susceptor.

The laminated structure of the heating device according to the present invention includes a main body on which a heating layer containing at least one of graphene and graphite is formed. The main body is composed of a metal body such as SPP or stainless steel, and a hollow in the vertical direction is formed inside. That is, the heating device is composed of a main body and a susceptor including a heating layer formed on a side surface of the main body.

The thermal conductivity of the heating layer in the present invention is preferably 4800 to 5300 W/mK.

2 is a perspective view of a heating device according to the present invention.

The heating device according to the present invention includes a susceptor 200 composed of a main body 210 having a heating space having a hollow upper side and a heating layer 220 laminated or formed on an outer surface of the main body 210 . The susceptor 200 has a circular column shape, and the hollow shape in the main body 210 also has a circular column shape, and at least a through hole may be formed on the lower side. The susceptor 200 has a polygonal column shape, and the hollow shape in the main body 210 may be a circular column shape or a polygonal column shape.

The total thickness of the heating layer 220 is within 10 μm, and the heating layer 220 may be composed of a plurality of laminates, and each laminate is preferably 1 μm or more. The temperature rising time varies depending on the total thickness of the heating layer 220, so that the taste of the aerosol of the aerosol-forming article is adjusted.

The heating layer 220 can generate heat directly by resistance heating, but has low resistance, thereby maximizing thermal efficiency of the aerosol generating device and minimizing current consumption.

3 is an exploded view of a heating device according to the present invention.

In FIG. 3, the heating device includes a flat body 210, a heating layer 220 stacked on the upper side of the body 210, and first and second electrode terminals for applying power to the heating layer 220. 230a and 230b, extension lines 240a and 240b for electrically connecting the first and second electrode terminals 230a and 230b and the control device, and the first and second electrode terminals ( 230a, 230b) and is configured to include a temperature sensor 250 for sensing the temperature of the susceptor 200. Electrical leads between the temperature sensor 250 and the control device are omitted.

The electrode unit is electrically mounted at an appropriate position of the heating layer 220 according to the structure of the aerosol generating device.

The temperature sensor 250 is connected to the heating layer 220 in a contact or non-contact manner at any location depending on a location where temperature measurement is required.

Since graphene included in the heating layer 220 maintains electrical conductivity even when its area is stretched or contracted by 10% or more, it can be applied to a bent portion or position within the accommodation space of the aerosol generating device. That is, in order to facilitate insertion of the aerosol-forming article, electrical characteristics are maintained even when the susceptor 200 is bent. After the main body 210 of FIG. 3 is rolled into a cylindrical shape to have a shape as shown in FIG. 2 , both ends of the main body 210 are coupled to each other, so that the circular columnar susceptor 200 can be manufactured.

4 is another embodiment of a heating device according to the present invention. The heating device of FIG. 4 includes the susceptor 200 of FIG. 2 and an induction heating coil 300 spirally wrapped around the outer surface of the susceptor 200 a plurality of times in the circumferential direction of the heating space. In this embodiment, the electrode unit is not mounted on the susceptor 200 .

The induction heating coil 300 is electrically insulated from the susceptor 200, and when the control device applies AC power to the induction heating coil 300, induction heating is performed in the heating layer 220 of the susceptor 200. .

As described above, the present invention is not limited to the specific preferred embodiments described above, and anyone having ordinary knowledge in the technical field to which the present invention pertains can do various things without departing from the gist of the present invention claimed in the claims. Of course, variations are possible, and such variations are within the scope of the claims.

200: susceptor 210: main body
220: heating layer

Claims (5)

A main body forming a hollow heating space into which an aerosol-forming article is inserted and heated, and a susceptor including graphene or graphite and a heating layer laminated on an outer surface of the main body,
The heating device of the aerosol generating device, characterized in that the thickness of the heating layer is within 10㎛. According to claim 1,
The heating device of the aerosol generating device, characterized in that the thermal conductivity of the heating layer is 4800 ~ 5300 W / mK. According to claim 1,
The heating device of the aerosol generating apparatus, characterized in that the main body has a cylindrical shape by being coupled to each other after being rolled into a cylindrical shape. According to any one of claims 1 to 3,
The heating device of the aerosol generating device, characterized in that the heating layer is equipped with an electrode unit and a temperature sensor unit. According to any one of claims 1 to 3,
The heating device of the aerosol generating device, characterized in that the heating device is provided with an induction heating coil wrapped around the outer surface of the susceptor in a helical manner a plurality of times in a circumferential direction of the heating space.