KR20240002272A - Cylindrical Heater for Electronic Cigarette Device - Google Patents

Abstract

The present invention relates to a cylindrical heater for a cigarette-type electronic cigarette device that has excellent heat transfer performance and can uniformly heat a cigarette. The cylindrical heater for a cigarette-type electronic cigarette device according to the present invention is made of a ceramic material into which a cigarette is inserted. A cylindrical cigarette support portion having a hollow portion; A heating portion laminated on the outer surface of the cigarette support portion to generate heat; An adhesive layer coated on the outer surface of the cigarette support part to join the cigarette support part and the heating part; And, a heat conduction particle layer made of a plurality of heat dissipating particles stacked on the inner surface of the cigarette support portion.

Description

Cylindrical heater for electronic cigarette device

The present invention relates to a heater for a cigarette-type electronic cigarette device, and more specifically, to a heater for a cigarette-type electronic cigarette device, including a cylindrical cigarette support portion made of a ceramic material with excellent heat transfer into which a cigarette is inserted, and a heating portion that is laminated on the outer surface of the cigarette support portion and generates heat to heat the cigarette. It relates to a cylindrical heater for a cigarette-type electronic cigarette device that generates aerosol by heating.

Electronic cigarettes are storage, heating or vaporizing devices containing processed material or extract of leaf tobacco containing nicotine, nicotine-free liquid material, etc., and Includes battery. After heating or vaporizing leaf tobacco products, leaf tobacco extracts, and nicotine-free liquid substances stored inside the electronic cigarette to create an aerosol, the user inhales the generated aerosol through the intake of the electronic cigarette. You can. When a user holds an electronic cigarette in his hand and inhales the inlet with his mouth, aerosol is generated inside the e-cigarette and is discharged into the mouth through the inlet, allowing the user to experience a feeling similar to smoking an actual cigarette.

However, conventional electronic cigarettes are a liquid type in which nicotine concentrate and liquid are purchased and mixed separately, and there are many cases where nicotine concentrate is purchased and used for the wrong purpose, causing social controversy such as explosion accidents, and active management is urgently needed.

To solve this problem, a cigarette-type electronic cigarette was proposed that, unlike conventional electronic cigarettes, inserts and heats a solid stick made of tobacco leaves. These cigarette-type electronic cigarettes have the advantage of inhaling vapor formed by heating a solid stick inserted inside through a heater, allowing a taste similar to that of conventional cigarettes.

However, in conventional cigarette-type electronic cigarettes, it is difficult to uniformly heat the solid stick as a whole, and there are limitations in improving heat transfer performance to the solid stick.

Republic of Korea Patent Publication No. 10-2022-0004434 Republic of Korea Patent No. 10-2382283

The present invention is intended to solve the above-described problem, and the purpose of the present invention is to provide a cylindrical heater for a cigarette-type electronic cigarette device that has excellent heat transfer performance and can heat a cigarette uniformly.

A cylindrical heater for a cigarette-type electronic cigarette device according to the present invention for achieving the above object includes a cylindrical cigarette support portion made of ceramic material and having a hollow portion into which a cigarette is inserted; A heating portion laminated on the outer surface of the cigarette support portion to generate heat; An adhesive layer coated on the outer surface of the cigarette support part to join the cigarette support part and the heating part; And, a heat conductive particle layer made of a plurality of heat dissipating particles stacked on the inner surface of the cigarette support portion.

The heating unit includes a support made of a film member having heat resistance and electrical insulation properties; an electrode pattern formed in a predetermined pattern on the support and generating heat when power is applied; And, a protective layer that has electrical insulation properties and is laminated on the support while covering the electrode pattern.

The heat dissipating particles of the heat conductive particle layer may be made of aluminum nitride or silicon carbide.

The heat conduction particle layer is composed of one or more carbon-based fillers including carbon black, carbon nanotube, and graphene, or boron nitride or silicon, along with the heat dissipation particles. It may be made by mixing one or more types of oxide-based particles including silicon oxide, zinc oxide, and aluminum oxide.

The heat dissipating particles have an average particle diameter of 30-150㎛ and may be spherical, plate-shaped, polygonal column-shaped, polygonal pyramid-shaped, or polyhedral-shaped.

According to the present invention, the cigarette support portion into which the cigarette is inserted and supported is made of ceramic material, and a heat conductive particle layer made of a plurality of heat dissipating particles is formed on the inner side, enabling rapid heating of the cigarette.

1 is a cross-sectional view showing a cigarette-type electronic cigarette device according to an embodiment of the present invention.
Figure 2 is a perspective view showing a cigarette-type electronic cigarette device according to an embodiment of the present invention.
Figure 3 is a perspective view showing a cylindrical heater of a cigarette-type electronic cigarette device according to an embodiment of the present invention.
Figure 4 is a longitudinal cross-sectional view of the cylindrical heater shown in Figure 3.
FIG. 5 is an expanded projection view of the heating portion of the cylindrical heater shown in FIG. 3.

The embodiments described in this specification and the configurations shown in the drawings are only preferred examples of the disclosed invention, and at the time of filing this application, there may be various modifications that can replace the embodiments and drawings in this specification.

Hereinafter, with reference to the attached drawings, a cylindrical heater for a cigarette-type electronic cigarette device will be described in detail according to the embodiments described below. In the drawings, like symbols represent like components.

First, an embodiment of a cigarette-type electronic cigarette device to which the cylindrical heater of the present invention is applied will be described with reference to FIGS. 1 and 2.

A cigarette-type electronic cigarette device 1 according to an embodiment of the present invention includes a case 2, a battery 3, a control unit 4, and a heater 100.

Case 2 is provided with a cigarette inlet 1a at one end for inserting a cigarette 10. This case (2) has an internal space for mounting the battery (3) and the control unit (4). This case 2 may be designed as a separate type. For example, when the user turns the case 2 clockwise or counterclockwise, the top and bottom of the case 2 may be separated.

At this time, only components related to the embodiment of the present invention are shown in FIGS. 1 and 2. Therefore, the fact that the cigarette-type electronic cigarette device 1 according to an embodiment of the present invention may further include other general-purpose components in addition to the components shown in FIGS. 1 and 2 is a technology related to the embodiment of the present invention. Anyone with ordinary knowledge in the field can understand.

When the cigarette 10 is inserted into the hollow part of the heater 100 through the cigarette inlet 1a of the case 2, the cigarette-type electronic cigarette device 1 heats the heater 100.

At this time, the temperature of the aerosol-generating material in the cigarette 10 is increased by the heated heater 100, and an aerosol is generated accordingly. The generated aerosol is delivered to the user through the filter of the cigarette 10.

The battery 3 supplies power used to operate the cigarette-type electronic cigarette device 1. For example, the battery 3 may supply power so that the heater 100 can be heated. Additionally, the battery 3 can supply the power necessary for the control unit 4 to operate. In addition, the battery 3 may supply the power necessary to operate the display, sensor, motor, etc. installed in the cigarette-type electronic cigarette device 1. A lithium iron phosphate (LiFePO4) battery may be used as the battery 3, but is not necessarily limited thereto.

The control unit 4 generally controls the operation of the cigarette-type electronic cigarette device 1. Specifically, the control unit 4 controls the operation of the battery 3 and the heater 100, as well as other components included in the cigarette-type electronic cigarette device 1. Additionally, the control unit 4 may check the status of each component of the cigarette-type electronic cigarette device 1 and determine whether the cigarette-type electronic cigarette device 1 is in an operable state.

For this purpose, the control unit 4 includes at least one processor. The processor may be implemented as an array of multiple logic gates, or as a combination of a general-purpose microprocessor and a memory storing a program that can be executed on the microprocessor.

The heater 100 is heated by power supplied through the control unit 4. When the cigarette 10 is inserted into the cigarette inlet 1a of the case 2, the heater 100 surrounds the outside of the cigarette 10. To this end, the heater 100 may have a cylindrical structure with a separate cigarette fixture (not shown) inside the hollow portion. Accordingly, the heated heater 100 can increase the temperature of the aerosol-generating material in the cigarette 10.

For this purpose, as shown in FIGS. 3 to 5, the heater 100 of the present invention is made of a ceramic material with excellent heat transfer and is laminated on the outer surface of the cigarette support 110 and the cylindrical cigarette support 110 into which the cigarette is inserted. A heating part 120 that generates heat, an adhesive layer 130 coated on the outer surface of the cigarette support part 110 to join the cigarette support part 110 and the heating part 120, and an inner surface of the cigarette support part 110. It includes a heat conduction particle layer 140 made of a plurality of heat dissipating particles 141 stacked.

The cigarette support portion 110 serves to support the cigarette. This cigarette support portion 110 may be placed at the center of the heater 100 for a cigarette-type electronic cigarette. The cigarette support portion 110 may have a cylindrical shape with a hollow body. It is made of a ceramic material that has heat resistance even at approximately 350°C or higher, which is the temperature of the heater 100 when the cigarette-type electronic cigarette device 1 is operated.

The heating unit 460 is disposed on the outside of the cigarette support unit 110 and is configured to generate high temperature heat for heating the cigarette 10 inserted inside the cigarette support unit 110.

Referring to FIG. 5 , the heating unit 120 may include a support 121, an electrode pattern 120, and a protective layer 123.

The support 121 is used to support the electrode pattern 120 disposed on one surface. A plate-shaped support having a predetermined area can be rolled into a cylindrical shape and laminated on the outer surface of the cigarette support 110. In addition, the support 121 may be made of a heat-resistant material to withstand high temperatures of 100°C or higher when the electrode pattern 120 generates heat, and may have electrical insulation properties to prevent short circuit of the electrode pattern 120. You can have it.

For example, the support 121 may be a film member with heat resistance and electrical insulation properties, and the film member may be made of a flexible material. For example, the film member may be a thermosetting heat-resistant resin with electrical insulating properties such as PI (polyimide) or PAI (polyamide-imide), but is not limited thereto, and any known thermosetting heat-resistant resin with electrical insulating properties can be applied. there is.

In addition, because the support 121 has flexibility, the heater 100 can be implemented in a cylindrical shape.

The electrode pattern 120 serves as a heating element that generates heat when power is applied, and may be formed in a predetermined pattern on one surface of the support 121. The electrode pattern 120 may be a printed pattern formed using a conductive paste, or may be a form in which a conductive member patterned through shape processing such as etching or punching is attached. For example, the conductive paste may be Ag paste, but is not limited thereto, and any known electrode material appropriately selected to suit the heating temperature required when power is applied among commonly used electrode materials may be used.

The electrode pattern 120 may have connection terminals 122a formed at both ends for electrical connection with other components, and the electrode pattern 120 connecting the two connection terminals 122a may be formed on the support. It may be bent in a zigzag manner so that it is evenly distributed over the entire area of (121).

However, the shape of the electrode pattern 120 is not limited to this, and may be formed in various shapes, and may be changed to an appropriate shape depending on design conditions. It may be formed in series or parallel, and may be formed in series or parallel. It may also be formed in a mixed form.

The protective layer 123 is disposed on the outermost part of the heating unit 120 to prevent the electrode pattern 120 from being exposed to the outside and to prevent the electrode pattern 120 from short-circuiting with other components. It may be made of a material that has electrical insulation properties. In addition, the protective layer 123 may be made of a material having heat resistance and thermosetting properties to prevent destruction by heat generated from the electrode pattern 120. For example, the protective layer 123 may be a coating layer made of a resin having insulating, thermosetting, and heat-resistant properties and laminated to one surface of the support 121 to a predetermined thickness. Accordingly, the electrode pattern 120 can be blocked from exposure to the outside through the protective layer 123.

As a specific example, the protective layer 123 may be a coating layer made of liquid polyimide or polyamideimide, but it is not limited thereto, and it has been revealed that any known material can be used as long as it has insulating properties, thermosetting properties, and heat resistance. put it

Referring again to FIGS. 3 and 4, the adhesive layer 130 is coated on the surface of the cigarette support portion 110, and functions to dissipate heat while bonding the cigarette support portion 110 and the heating portion 120. That is, the adhesive layer 130 is disposed between the cigarette support part 110 and the heating part 120, and stably adheres the heating part 120 to the cigarette support part 110, as well as the cigarette type electronic cigarette device (1). ) serves to prevent overheating in the heating unit 120 when operating.

This adhesive layer 130 preferably has a thickness of 0.5 to 10 μm. If the thickness of the adhesive layer 130 is less than 0.5㎛, there is a risk that the adhesive layer 130 may not be reliably adhered because the thickness is too thin. Conversely, if the thickness of the adhesive layer 130 exceeds 10㎛, there is a risk that heat transfer efficiency may be reduced due to excessive thickness design.

In order for the adhesive layer 130 to facilitate heat transfer to the cigarette support portion 110 and prevent overheating of the heating portion 120, the adhesive layer 130 has a glass transition temperature (Tg) of 240 to 300°C and a thermal decomposition temperature (Td) of 500 to 550°C. It is preferable to use a thermoplastic polyimide resin having. By thermocompressing and bonding the cigarette support portion 110 and the heating portion 120 using such a highly heat-resistant thermoplastic polyimide resin, the adhesion between the cigarette support portion 110 and the heating portion 120 is improved and the heating portion ( 120), overheating can be prevented in advance.

This thermoplastic polyimide resin may contain diamine and dianhydride. Here, the diamines include ODA (4,4-oxydianiline), PPDA (para-phenylenediamine), BAPP (2,2-Bis(4-(4-aminophenoxy)phenyl)propane), and m-BAPS(bis(4-( One or more types selected from 3-aminophenoxy)phenyl)Sulfone) and TPE-R (1,3-Bis(4-aminophenoxy)benzene) can be used. In addition, as dianhydride, one or more of PMDA (pyromellitic dianhydride), BPDA (diphenyl tetra carboxylic acid dianhydride), BPADA (4,4'-bisphenol A dianhydride), and BTDA (Benzophenone tetracarboxylic acid dianhydride) may be used. .

A heat conductive particle layer 140 made of heat dissipating particles 141 is coated on the inner surface of the cigarette support 110. The heat conduction particle layer 140 increases the specific surface area by heat dissipation particles, thereby improving the radiation efficiency of radiant heat to the cigarette or the efficiency of heat transfer, allowing the cigarette to be heated rapidly and the heating time to be shortened compared to a conventional heater. . The heat conductive particle layer 140 can be firmly attached to the cigarette support 110 by sintering the heat dissipating particles 141.

The heat dissipating particles 141 of the heat conductive particle layer 140 have excellent thermal conductivity and are made of aluminum nitride to reduce peeling and thermal stress caused by the difference between the thermal expansion coefficient of the cigarette support 110 made of ceramic and the heat dissipating particles 141. Alternatively, silicon carbide can be used. In addition, one or more carbon-based fillers including carbon black, carbon nanotube, and graphene, or boron nitride or silicon oxide, along with the heat dissipating particles 141. One or more types of oxide-based particles including silicon oxide, zinc oxide, and aluminum oxide can be used by mixing them together.

The heat dissipating particles 141 are particles with an average particle diameter of approximately 30 to 150 ㎛, and may be particles of various shapes such as spherical shape, plate shape, polygonal column shape, polygonal pyramid shape, and polyhedral shape. However, the ratio of the heat dissipating particles 6 It is desirable to have a polygonal shape to further increase the surface area.

In the above, the technical idea of the present invention has been described along with the accompanying drawings, but this is an exemplary description of a preferred embodiment of the present invention and does not limit the present invention. In addition, it is clear that anyone skilled in the art of the present invention can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

1: Cigarette-type electronic cigarette device 2: Case
3: Battery 4: Control unit
10: cigarette 100: heater
110: cigarette support part 120: heating part
121: support 122: electrode pattern
122a: connection terminal 123: protective layer
130: Adhesive layer 140: Heat conduction particle layer
141: heat radiation particles

Claims (5)

A cylindrical cigarette support portion made of ceramic material and having a hollow portion into which a cigarette is inserted;
A heating portion laminated on the outer surface of the cigarette support portion to generate heat;
An adhesive layer coated on the outer surface of the cigarette support part to join the cigarette support part and the heating part; and,
A heat conduction particle layer made of a plurality of heat dissipating particles stacked on the inner surface of the cigarette support portion;
A cylindrical heater for a cigarette-type electronic cigarette device comprising a. The method of claim 1, wherein the heating unit,
A support made of a film member having heat resistance and electrical insulation properties;
an electrode pattern formed in a predetermined pattern on the support and generating heat when power is applied; and,
A protective layer having electrical insulation properties and laminated on the support while covering the electrode pattern;
A cylindrical heater for a cigarette-type electronic cigarette device comprising a. The cylindrical heater for a cigarette-type electronic cigarette device according to claim 1, wherein the heat dissipating particles of the heat conductive particle layer are made of aluminum nitride or silicon carbide. The method of claim 3, wherein the heat conduction particle layer is made of at least one carbon-based filler including carbon black, carbon nanotube, and graphene, or boron nitride, together with the heat dissipating particle. A cylindrical heater for a cigarette-type electronic cigarette device made by mixing together one or more types of oxide-based particles including boron nitride, silicon oxide, zinc oxide, and aluminum oxide. The cylindrical heater for a cigarette-type electronic cigarette device according to claim 4, wherein the heat dissipating particles have an average particle diameter of 30-150㎛ and are spherical, plate-shaped, polygonal column-shaped, polygonal pyramid-shaped, or polyhedral-shaped.

Images