KR102124636B1 - A heater installed in an aerosol generating apparatus - Google Patents

Abstract

A heater according to one aspect includes: a substrate whose one end is acutely closed; A first sheet surrounding at least a portion of the substrate and comprising at least one first electrically conductive track heated by the supplied power and at least one second electrically conductive track sensing the temperature of the substrate; And a coating layer surrounding the substrate surrounded by the sheet.

Description

Heater for aerosol generating device {A heater installed in an aerosol generating apparatus}

It concerns a heater for an aerosol-generating device. More specifically, it relates to a heater that includes parts exhibiting different temperatures.

In recent years, there is an increasing demand for alternative methods to overcome the shortcomings of common cigarettes. For example, the demand for aerosol-generating methods is increasing as the aerosol-generating material in the cigarette is heated, rather than a method for burning a cigarette to produce an aerosol. Accordingly, research into a heated cigarette or a heated aerosol generating device has been actively conducted.

In the heated aerosol-generating device, it is essential to employ a heater for heating the cigarette. For example, a heater that can be employed in an aerosol-generating device may transfer heat to a heating object (cigarette) by embedding a metal linear heating resistor using tungsten, molybdenum, or the like in a ceramic body of silicon nitride or aluminum oxide. In general, the heater includes an electrically resistive heating portion (heating area) and a conducting wire (non-heating area) for supplying electric power to the above-mentioned electric resistance heating part. The aforementioned heater has been widely used in various products that provide heat to an object, as well as a silk aerosol generating device. For example, a heater having the above-described structure has been widely used in products such as a glow plug for a diesel engine, a temperature sensor using a resistance temperature coefficient, a hair dryer, a warm air fan heater, and an iron.

As an example, the heater disclosed in Japanese Unexamined Utility Model Publication No. Hei 5-31191 is an electrode terminal lead formed on a ceramic support and a heating region formed of a heating resistor pattern formed on a ceramic support to supply electricity to the heating resistor pattern It includes a non-heating region. That is, the conventionally known heater does not utilize the entire area of the ceramic support as a heating area, and thus can be combined with other components through the non-heating area of the ceramic support.

As another example, referring to Japanese Patent Application Laid-Open No. 2001-68254, a heating element and a lead wire are included in a ceramic support, but one end of a housing supporting the ceramic support discloses a structure of a heater that does not surround the heating portion.

On the other hand, the member for gripping (fixing) the heater is generally disposed at a position slightly spaced from the heat generating area rather than the area adjacent to the heat generating area. If a member that grips (fixes) the heater is disposed adjacent to the heating area, the efficiency of the heat energy generated because the heat energy generated in the heating area is transmitted to the member, as well as the fatal effect on the durability of the member (eg For example, deformation due to heat, etc.). For this reason, the member that grips (fixes) the heater is usually disposed in an area not adjacent to the heating area.

On the other hand, in order to form a desirable aerosol, it is required to heat the heater according to a predetermined temperature. Therefore, it is necessary to accurately sense the current temperature of the heater. However, when a separate temperature sensing sensor is disposed in the aerosol-generating device, the volume of the aerosol-generating device may be increased, and the production cost of the aerosol-generating device may be increased.

In addition, in the case of an aerosol-generating device in which a heater is inserted into the cigarette, for the stable use of the device, it is necessary to prevent the phenomenon of the insertion and separation of the cigarette smoothly and the deposition of foreign substances on the surface of the heater.

It is intended to provide a heater for an aerosol-generating device. The technical problem to be solved is not limited to the technical problems as described above, and other technical problems may exist.

A heater according to one aspect includes a substrate having thermal conductivity and electrical insulation, and one end of which is acutely closed; A first sheet surrounding at least a portion of the substrate and comprising at least one first electrically conductive track heated by the supplied power and at least one second electrically conductive track sensing the temperature of the substrate; And a coating layer surrounding the substrate surrounded by the first sheet.

In the above-described heater, the first sheet includes a plurality of the first electrically conductive tracks, and the second electrically conductive track is an area between the first electrically conductive tracks spaced apart from each other on the first sheet. Is placed on.

In the above-described heater, the second electrically conductive track is an electrically conductive element having a different resistance temperature coefficient (TCR) or a different resistance value from the first electrically conductive track.

In the above-described heater, the first electrically conductive track includes: a first region; And a second region having at least one of a width, a thickness, a specific resistance value, and a resistance temperature coefficient different from the first region, wherein the second region is disposed adjacent to the other end of the substrate opposite to the one end. .

In the above-described heater, the first region is heated to a higher temperature than the second region by the electric power supplied.

In the above-described heater, at a position corresponding to at least a portion of the second region, the fixing member surrounding at least a portion of the substrate further includes a.

In the above-described heater, the second area includes: a space located between the first area; And a fixing member region spaced apart from the first region with the space therebetween.

In the above-described heater, the fixing member includes at least one of ceramic, heat-resistant resin, anodized metal, and coated metal.

In the above-described heater, the heater is disposed in the aerosol-generating device to heat the cigarette inserted in the aerosol-generating device.

In the above-described heater, the first electrically conductive track and the second electrically conductive track and at least one connection portion connecting the battery; and further comprising, the at least one connection portion is located in the second region.

In the above-described heater, the width or thickness of the at least one connecting portion is different from the width or thickness of the first electrically conductive track and the second electrically conductive track.

In the above-described heater, the at least one connecting portion is made of a material different from the first electrically conductive track and the second electrically conductive track.

In the above-described heater, a second sheet surrounding at least a portion of the substrate surrounded by the first sheet; further includes a.

In the above-described heater, the coating layer includes a plurality of coating layers, and the plurality of coating layers have different thicknesses.

In the above-described heater, the heater is disposed in the aerosol-generating device to be located inside the cigarette when the cigarette is inserted into the aerosol-generating device.

A heater according to another aspect, comprising: a sheet including at least one first electrically conductive track heated by supplied power and at least one second electrically conductive track sensing a temperature of the substrate; And a coating layer surrounding the substrate surrounded by the sheet, wherein the sheet is disposed in the aerosol-generating device to be located outside the cigarette when the cigarette is inserted into the aerosol-generating device.

A heater according to another aspect, the substrate having one end terminated at an acute angle, and at least one first electrically conductive track and at least one second electrically conductive track laminated; And a coating layer surrounding the substrate, wherein the first electrically conductive track is heated by supplied power, and the second electrically conductive track senses the temperature of the substrate.

According to the above, since the temperature of the region where the fixing member is located in the heater is lower than the temperature of the heating region of the heater, the fixing member is not deformed by the heat of the heater. Therefore, the fixing member can stably fix the heater to the body of the aerosol-generating device.

In addition, since at least one coating layer is formed on the surface of the heater, it is easy to insert/separate a cigarette and prevent the surface of the heater from being contaminated.

In addition, by arranging the temperature sensor tracks between different electrically conductive tracks on the electrically insulating substrate, the temperature sensor track can sense the temperature at the heating part of the heater more uniformly and accurately.

1 is a view showing an example of an aerosol generating device and a cigarette.
2 is a view showing an example in which a cigarette is inserted into the aerosol generating device.
3 is a view showing an example of a cigarette.
4 is a configuration diagram showing an example of a heater.
5 is a view for explaining an example of the first area and the second area of the heater.
6 is a view for explaining an example of an electrically conductive track.
7 is a view for explaining another example of the electrically conductive track.
8 is a cross-sectional view of the first sheet of FIG. 7 viewed from the side along the X-X' line.
9 is a view for explaining an example of the coating layer of the heater.
10 is a view for explaining simulation results of temperature sensing according to different implementation methods of the second electrically conductive track.
11 is a view for explaining another example of the heater.

The terminology used in the embodiments has been selected from general terms that are currently widely used as possible while considering functions in the present invention, but this may vary according to the intention or precedent of a person skilled in the art or the appearance of new technologies. In addition, in certain cases, some terms are arbitrarily selected by the applicant, and in this case, their meanings will be described in detail in the description of the applicable invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the contents of the present invention, not simply the names of the terms.

When a part of the specification "includes" a certain component, this means that other components may be further included instead of excluding other components, unless specifically stated to the contrary. In addition, terms such as “?? part” and “?? module” described in the specification mean a unit that processes at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software. have.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a view showing an example of an aerosol generating device and a cigarette.

Referring to FIG. 1, an example of an aerosol generating device 100 and a cigarette 200 inserted therein is illustrated. Inside the aerosol-generating device 100, a heater 130 heated by electric power supplied from a battery is provided. The heater 130 is fixed to be located in the interior space of the aerosol-generating device 100. For example, the heater 130 is installed on the fixing member 150, and the fixing member 150 is installed on the aerosol generating device 100, so that the heater 130 can be fixed on the aerosol generating device 100. .

The fixing member 150 serves to support the heater 130 inside the aerosol-generating device 100. As the cigarette 200 is inserted into the aerosol-generating device 100, a heater 130 is positioned inside the inserted cigarette 200. Therefore, the heater 130 should be firmly fixed in the aerosol-generating device 100. The fixing member 150 serves to fix the heater 130, and the heater 130 is fixed by the mechanical element (eg, notch, etc.) of the fixing member 150. It can be fixed more firmly.

The fixing member 150 may be made of a moldable material. For example, the fixing member 150 may be formed of a moldable polymer material such as polyether ether ketone (PEEK), but is not limited thereto. In other words, the moldable material of the fixing member 150 may include at least one of ceramic, heat-resistant resin, anodized metal, and coated metal.

The cigarette 200 may be inserted into the interior space through one end 140 of the aerosol-generating device 100, and accordingly, the heater 130 may be located inside the first portion 210 of the cigarette 200 Can be.

The temperature of the aerosol-generating material in the first portion 210 is increased by the heated heater 130, thereby generating an aerosol. Here, the heater 130 may be heated to a temperature that does not burn the aerosol-generating material. In other words, by heating the aerosol-generating material to a temperature lower than the ignition point of the aerosol-generating material, the heater 130 may generate an aerosol. For example, the heater 130 may be heated to about 300°C to about 600°C, but is not limited thereto.

Since the fixing member 150 serves to fix the heater 130, the fixing member 150 should not be deformed by the heated heater 130. Therefore, the temperature of the heater 130 adjacent to the fixing member 150 should be lower than the temperature at which the material (for example, a moldable polymer material) of the fixing member 150 is burned, melted, or otherwise deformed.

The heater 130 according to an embodiment includes a first region heated to a predetermined temperature and a second region indicating a lower temperature than the first region. For example, the first region of the heater 130 may be heated to about 300°C to about 600°C. Meanwhile, the fixing member 150 may be installed in at least a portion of the second region. Therefore, aerosol may be generated from the cigarette 200 by the heated heater 130, and deformation of the fixing member 150 may be prevented.

In FIG. 1, the heater 130 is shown in a single needle shape with one end closed at an acute angle. However, the shape of the heater 130 is not limited thereto, and the heater 130 may be implemented in various forms such as a tubular shape, a blade shape, a plate shape, and a rod shape. In addition, one end of the heater 130 may be embodied in other forms, such as a curved shape, instead of an acutely closed shape. That is, the shape of the heater 130 may be adopted without limitation as long as it is a shape that can be inserted into the cigarette 200.

Hereinafter, the aerosol generating device 100 and the cigarette 200 will be described in detail with reference to FIGS. 2 and 3.

2 is a view showing an example in which a cigarette is inserted into the aerosol generating device.

Referring to FIG. 2, the aerosol-generating device 100 includes a battery 110, a control unit 120, and a heater 130. In addition, the cigarette 200 may be inserted into the interior space of the aerosol-generating device 100.

The aerosol-generating device 100 shown in FIG. 2 shows components related to the present embodiment. Therefore, it can be understood by those of ordinary skill in the art related to this embodiment that other general-purpose components in addition to those shown in FIG. 2 may be further included in the aerosol-generating device 100.

2, the battery 110, the control unit 120, and the heater 130 are illustrated as being arranged in a line, but are not limited thereto. In other words, according to the design of the aerosol-generating device 100, the arrangement of the battery 110, the control unit 120, and the heater 130 may be changed.

When the cigarette 200 is inserted into the aerosol-generating device 100, the aerosol-generating device 100 heats the heater 130. The aerosol-generating material in the cigarette 200 is heated by the heated heater 130, and accordingly, aerosol may be generated. The generated aerosol is delivered to the user through the filter 220 of the cigarette 200.

If necessary, even if the cigarette 200 is not inserted into the aerosol-generating device 100, the aerosol-generating device 100 may heat the heater 130.

The battery 110 supplies power used to operate the aerosol-generating device 100. For example, the battery 110 may supply power so that the heater 130 can be heated, and supply power necessary for the control unit 120 to operate. In addition, the battery 110 may supply power required for the display, sensor, motor, and the like installed in the aerosol-generating device 100 to operate. For example, the battery 110 may be a lithium ion battery, a nickel-based battery (eg, a nickel-metal hydride battery, a nickel-cadmium battery), or a lithium-based battery (eg, a lithium-cobalt battery, lithium- Phosphate batteries, lithium titanate batteries or lithium-polymer batteries).

The control unit 120 generally controls the operation of the aerosol-generating device 100. Specifically, the controller 120 controls the operation of the battery 110 and the heater 130 as well as other components included in the aerosol-generating device 100. In addition, the control unit 120 may determine the state of each of the components of the aerosol-generating device 100 to determine whether the aerosol-generating device 100 is in an operable state.

The control unit 120 includes at least one processor. The processor may be implemented as an array of multiple logic gates, or a combination of a general-purpose microprocessor and a memory in which programs executable on the microprocessor are stored. In addition, those skilled in the art to which this embodiment belongs may understand that it may be implemented with other types of hardware.

The heater 130 is heated by electric power supplied from the battery 110. For example, when the cigarette is inserted into the aerosol-generating device 100, the heater 130 may be located inside the cigarette. Thus, the heated heater 130 can increase the temperature of the aerosol-generating material in the cigarette.

The heater 130 may be an electric resistive heater. For example, the heater 130 may include an electrically conductive track, and as the current flows through the electrically conductive track, the heater 130 may be heated. However, the heater 130 is not limited to the above-described example, and may be applicable without limitation as long as it can be heated to a desired temperature (for example, about 300°C to 600°C). Here, the desired temperature may be preset in the aerosol-generating device 100, or may be set to a desired temperature by the user. A detailed description of the heater 130 will be described later with reference to FIGS. 4 to 10.

In FIG. 2, the heater 130 is shown to be disposed to be inserted into the cigarette 200, but is not limited thereto. The inside or outside of the cigarette 200 may be heated according to the shape of the heater 130.

In addition, a plurality of heaters 130 may be disposed in the aerosol-generating device 100. At this time, the plurality of heaters 130 may be arranged to be inserted into the cigarette 200, or may be disposed outside the cigarette 200. In addition, some of the plurality of heaters 130 may be disposed to be inserted into the cigarette 200, and the rest may be disposed outside the cigarette 200. In addition, the shape of the heater 130 is not limited to the shape shown in FIG. 2, and may be manufactured in various shapes.

Meanwhile, the aerosol-generating device 100 may further include general-purpose components in addition to the battery 110, the controller 120, and the heater 130. For example, the aerosol-generating device 100 may include a display capable of outputting visual information and/or a motor for outputting tactile information. In addition, the aerosol-generating device 100 may include at least one sensor (puff detection sensor, temperature detection sensor, cigarette insertion detection sensor, etc.).

In addition, the aerosol-generating device 100 may be manufactured in a structure in which external air may be introduced or internal gas may be discharged even when the cigarette 200 is inserted.

Although not illustrated in FIG. 2, the aerosol-generating device 100 may constitute a system together with a separate cradle. For example, the cradle may be used to charge the battery 110 of the aerosol-generating device 100. Alternatively, the heater 130 may be heated while the cradle and the aerosol-generating device 100 are combined.

The cigarette 200 may be similar to a general combustion type cigarette. For example, the cigarette 200 may be divided into a first portion 210 including an aerosol-generating material and a second portion 220 including a filter. Alternatively, an aerosol-generating material may also be included in the second portion 220 of the cigarette 200. For example, an aerosol-generating material made in the form of granules or capsules may be inserted into the second portion 220.

The entire first portion 210 may be inserted into the aerosol-generating device 100, and the second portion 220 may be exposed to the outside. Alternatively, only a portion of the first portion 210 may be inserted into the aerosol-generating device 100, or a portion of the first portion 210 and the second portion 220 may be inserted. The user may inhale the aerosol in the state where the second part 220 is opened by mouth. At this time, the aerosol is generated by the external air passing through the first portion 210, and the generated aerosol passes through the second portion 220 and is delivered to the user's mouth.

As an example, external air may be introduced through at least one air passage formed in the aerosol-generating device 100. For example, the opening and closing of the air passage and/or the size of the air passage formed in the aerosol-generating device 100 may be adjusted by the user. Accordingly, the amount of atomization, smoking sensation, and the like can be adjusted by the user. As another example, external air may be introduced into the interior of the cigarette 200 through at least one hole formed on the surface of the cigarette 200.

3 is a view showing an example of a cigarette.

Referring to FIG. 3, the cigarette 200 includes a cigarette rod 210 and a filter rod 220. The first portion 210 described above with reference to FIGS. 1 and 2 includes the cigarette rod 210, and the second portion 220 includes the filter rod 220.

3, the filter rod 220 is shown as a single segment, but is not limited thereto. In other words, the filter rod 220 may be composed of a plurality of segments. For example, the filter rod 220 may include a first segment that cools the aerosol and a second segment that filters certain components contained in the aerosol. In addition, if necessary, the filter rod 220 may further include at least one segment that performs other functions.

The cigarette 200 may be packaged by at least one wrapper 240. The wrapper 240 may have at least one hole through which external air flows or internal gas flows out. As an example, the cigarette 200 may be packaged by one wrapper 240. As another example, the cigarette 200 may be packaged overlapping by two or more wrappers 240. For example, the cigarette rod 210 may be packaged by the first wrapper, and the filter rod 220 may be packaged by the second wrapper. Then, the cigarette rod 210 and the filter rod 220 packaged by individual wrappers are combined, and the entire cigarette 200 can be repackaged by a third wrapper. If each of the cigarette rod 210 or the filter rod 220 is composed of a plurality of segments, each segment may be packaged by a separate wrapper. In addition, the entire cigarette 200 in which the segments packaged by the individual wrappers are combined may be repackaged by another wrapper.

Cigarette rod 210 includes an aerosol-generating material. For example, the aerosol-generating material may include, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. In addition, the tobacco rod 210 may contain other additives such as flavoring agents, wetting agents and/or organic acids. In addition, a flavoring solution such as menthol or moisturizer may be added to the tobacco rod 210 by spraying it onto the tobacco rod 210.

The cigarette rod 210 may be manufactured in various ways. For example, the tobacco rod 210 may be made of a sheet, or may be made of strands. In addition, the tobacco rod 210 may be made of cut tobacco cut into cuts. In addition, the tobacco rod 210 may be surrounded by a heat conducting material. For example, the heat-conducting material may be a metal foil such as aluminum foil, but is not limited thereto. For example, the heat-conducting material surrounding the tobacco rod 210 may evenly disperse heat transferred to the tobacco rod 210 to improve the thermal conductivity applied to the tobacco rod, thereby improving the taste of the cigarette. . In addition, the heat-conducting material surrounding the tobacco rod 210 may function as a susceptor heated by an induction heating heater. At this time, although not shown in the drawing, the cigarette rod 210 may further include an additional susceptor in addition to the heat conducting material surrounding the outside.

The filter rod 220 may be a cellulose acetate filter. Meanwhile, the shape of the filter rod 220 is not limited. For example, the filter rod 220 may be a cylindrical type rod or a tube type rod including a hollow inside. Also, the filter rod 220 may be a recessed type rod. If the filter rod 220 is composed of a plurality of segments, at least one of the segments may be manufactured in a different shape.

The filter rod 220 may be manufactured to produce flavor. As an example, the flavourant may be sprayed onto the filter rod 220, or separate fibers coated with the flavourant may be inserted into the filter rod 220.

Also, the filter rod 220 may include at least one capsule 230. Here, the capsule 230 may perform a function of generating flavor or a function of generating an aerosol. For example, the capsule 230 may be a structure in which a liquid containing a fragrance is wrapped with a film. The capsule 230 may have a spherical or cylindrical shape, but is not limited thereto.

If the filter rod 220 includes a segment for cooling the aerosol, the cooling segment may be made of a polymer material or a biodegradable polymer material. For example, the cooling segment may be made of pure polylactic acid, but is not limited thereto. Alternatively, the cooling segment may be made of a cellulose acetate filter with a plurality of perforations. However, the cooling segment is not limited to the above-described example, and may be applied without limitation as long as the aerosol can perform a cooling function.

4 is a configuration diagram showing an example of a heater.

Referring to FIG. 4, the heater 130 includes a substrate 131, a first sheet 132, and a second sheet 133. However, the second seat 133 may not be provided according to the design of the heater 130.

The base material 131 may be manufactured in the shape of a rod needle. For example, the body of the substrate 131 is formed in a cylindrical shape, and one end of the substrate 131 may be closed at an acute angle to facilitate insertion of the cigarette 200. At this time, the body and the end of the substrate 131 may be formed as an integral body, or may be fabricated separately and then joined.

On the other hand, in Figure 4, the substrate 131 is shown as having a needle shape, but is not limited thereto. For example, the substrate 131 may be manufactured in a blade shape. Specifically, the body of the substrate 131 is formed in a plate shape, and one end of the substrate 131 may be closed at an acute angle so that the cigarette 200 is easily inserted.

The substrate 131 has thermal conductivity and electrical insulation. In other words, the substrate 131 may be made of a thermally conductive material. For example, the substrate 131 may be manufactured to have a thermal conductivity of 2 W/m·K or less, but is not limited thereto. In addition, the substrate 131 may be made of a material having electrical conductivity as well as thermal conductivity. For example, the substrate 131 may be made of ceramic, anodized metal, coated metal, polyimide (PI), etc., including alumina or zirconia, etc. However, it is not limited thereto.

The base 131 is a base on which the first sheet 132 and/or the second sheet 133 can be stably positioned. In other words, since the first sheet 132 and/or the second sheet 133 is fixed to the outside of the substrate 131, it can be stably positioned without moving within the aerosol-generating device 100. In addition, the base material 131 has a rigidity such that the shape of the heater 130 may not be deformed even if the cigarette 200 is inserted.

The first sheet 132 may wrap at least a portion of the substrate 131. In addition, at least one electrically conductive track may be included in both cross sections or one cross section of the first sheet 225. As the current flows through the first electrically conductive track by the electric power supplied from the battery 110, the temperature of the first electrically conductive track rises. As the temperature of the first electrically conductive track rises, heat is transferred to the substrate 131 adjacent to the first sheet 132, so that the substrate 131 may be heated.

The heating temperature of the first electrically conductive track can be determined by the power consumption of the resistance of the first electrically conductive track. Further, based on the power consumption of the resistance of the first electrically conductive track, the resistance value of the first electrically conductive track can be set.

For example, the resistance value of the first electrically conductive track may have a value between 0.5 ohm and 1.2 ohm (preferably between 0.7 ohm and 0.85 ohm) at 25°C at room temperature, but is not limited thereto. At this time, the resistance value of the first electrically conductive track may be set by the constituent material, length, width, thickness and pattern of the first electrically conductive track.

The first electrically conductive track may increase the size of the internal resistance as the temperature increases, depending on the resistance temperature coefficient characteristic. For example, the temperature of the first electrically conductive track and the magnitude of the resistance in a predetermined temperature section may be proportional.

For example, a predetermined voltage is applied to the first electrically conductive track, and the current flowing through the first electrically conductive track can be measured through the current sensor. In addition, the resistance of the first electrically conductive track can be calculated through the ratio of the measured current and the applied voltage. Based on the calculated resistance, according to the resistance temperature coefficient characteristic of the first electrically conductive track, the temperature of the first electrically conductive track or the substrate 131 may be estimated.

For example, the first electrically conductive track can be made of stainless steel, tungsten, gold, platinum, silver, copper, nickel, chromium, palladium, or combinations thereof. Further, the first electrically conductive track can be doped with a suitable doping material and can include an alloy.

A second electrically conductive track may be included on one surface or the other surface of both sections of the first sheet 132. The second electrically conductive track is used to sense the temperature of the substrate 131, and may be formed of a material having a resistance temperature coefficient characteristic. According to the resistance temperature coefficient characteristic of the second electrically conductive track, as the temperature increases, the size of the internal resistance may increase. For example, the temperature of the second electrically conductive track and the magnitude of the resistance in a predetermined temperature section may be proportional.

For example, if the voltage across the second electrically conductive track and the current flowing through the second electrically conductive track are measured, the resistance R can be determined. At this time, the temperature T of the second electrically conductive track may be determined by Equation 1 below.

In Equation 1, R means the current resistance value of the second electrically conductive track, R0 means the resistance value at the temperature T0 (for example, 0°C), and α is the resistance temperature of the second electrically conductive track Means a coefficient. Since the conductive material (for example, metal) has an intrinsic resistance temperature coefficient, α may be predetermined depending on the conductive material constituting the second electrically conductive track. Accordingly, when the resistance R of the second electrically conductive track is determined, the temperature T of the second electrically conductive track can be calculated by Equation 1 above.

The second electrically conductive track can be disposed adjacent to the substrate 131. Accordingly, when the temperature of the substrate 131 increases, the temperature of the second electrically conductive track may also increase. A predetermined voltage is applied to the second electrically conductive track, and the current flowing through the second electrically conductive track can be measured through the current sensor. Accordingly, the resistance of the second electrically conductive track is determined through the ratio of current and voltage of the second electrically conductive track, and the temperature of the substrate 131 can be determined according to Equation 1 above.

The resistance value of the second electrically conductive track may be changed according to the temperature of the second electrically conductive track. Accordingly, it is possible to measure the temperature change of the second electrically conductive track based on the change in the resistance value of the second electrically conductive track. For example, the resistance value of the second electrically conductive track may have a resistance value between 7 ohm and 18 ohm (preferably, a resistance value between 12 ohm and 14 ohm) at 25° C., but is not limited thereto. . At this time, the resistance value of the second electrically conductive track may be set by the constituent material, length, width, thickness and pattern of the second electrically conductive track.

For example, the second electrically conductive track can be made of stainless steel, tungsten, gold, platinum, silver, copper, nickel, chromium, palladium, or combinations thereof. In addition, the second electrically conductive track can be doped with a suitable doping material or include an alloy.

The first electrically conductive track can be connected to the battery 110 through an electrical connection. As described above, as the power is supplied from the battery 110, the temperature of the first electrically conductive track may increase.

The second electrically conductive track may be connected to an electrical connection to which a direct current (DC) voltage is applied. The electrical connection connected to the second electrically conductive track can be separated from the electrical connection connected to the first electrically conductive track. Also, when the DC voltage applied to the second electrically conductive track is constant, the magnitude of the current flowing through the second electrically conductive track may be determined based on the resistance of the second electrically conductive track.

For example, the second electrically conductive track may be connected to an OP Operating Amplifier (Amp). OP Amp is a power supply that receives DC power from the outside, an input that is electrically connected to the second electrically conductive track and receives DC voltage and/or current, and a signal based on the DC voltage and/or current applied to the input. It may include an output unit for output.

The OP Amp can receive a DC voltage through the power supply. Also, the DC voltage may be applied to the OP Amp through the input unit. At this time, the magnitude of the DC voltage applied through the input of the OP Amp and the magnitude of the DC voltage applied through the power supply of the OP Amp may be the same. Also, the DC voltage applied to the input of the OP Amp may be the same as the DC voltage applied to the electrical connection of the second electrically conductive track.

As the temperature of the second electrically conductive track changes, the resistance value of the second electrically conductive track may change. Accordingly, the second electrically conductive track functions as a variable resistor having temperature as a control variable, and as the resistance value of the second electrically conductive track changes, it flows into the input of the OP Amp electrically connected to the second electrically conductive track. The current changes. As the resistance value of the second electrically conductive track increases, the current flowing into the input of the OP Amp electrically connected to the second electrically conductive track decreases. At this time, even if the resistance value of the second electrically conductive track changes, the DC voltage applied to the input of the OP Amp may be constant.

As the current flowing into the input of the OP Amp changes, the voltage and/or current of the signal output from the output of the OP Amp may change. For example, as the input current of the OP Amp increases, the output voltage of the OP Amp may increase. As another example, as the input current of the OP Amp increases, the output voltage of the OP Amp may decrease.

In addition, when a constant DC voltage is applied to the input part of the OP Amp, the relationship between the temperature and the resistance value of the second electrically conductive track, the relationship between the resistance value of the second electrically conductive track and the input current applied to the OP Amp, and the OP Amp The relationship between the input current and the output voltage of can be obtained or set experimentally. Accordingly, by measuring the change in the output voltage and/or output voltage of the OP Amp, it is possible to detect a change in temperature and/or temperature of the second electrically conductive track.

As an example, as the input current flowing into the input unit increases, the voltage of the output unit of the OP Amp increases. In this case, as the power is supplied to the first electrically conductive track, the temperature of the heater 130 increases, and accordingly, the temperature of the second electrically conductive track also increases. At this time, due to the increase in resistance of the second electrically conductive track, the magnitude of the input current applied to the input of the OP Amp may be reduced. Therefore, the voltage at the output of the OP Amp decreases. Conversely, as the power supply to the first electrically conductive track is cut off or the supply power of the first electrically conductive track decreases, the temperature of the heater 130 decreases, so the voltage of the output portion of the OP Amp increases.

As another example, the OP Amp may have a characteristic that the voltage of the output portion decreases as the input current flowing into the input portion increases. In this case, the temperature of the heater 130 increases as power is supplied to the first electrically conductive track. Accordingly, the temperature of the second electrically conductive track increases. At this time, due to the increase in resistance of the second electrically conductive track, the magnitude of the input current applied to the input portion of the OP Amp may be reduced. Therefore, the voltage of the output portion of the OP Amp increases. Conversely, the power supply to the first electrically conductive track is cut off or the power supplied to the first electrically conductive track decreases, and as the temperature of the heater 130 decreases, the voltage of the output portion of the OP Amp decreases.

The output unit of the OP Amp may be connected to the control unit 120. The controller 120 may sense the temperature of the second electrically conductive track or substrate 131 based on the output voltage of the OP Amp. In addition, the control unit 120 may adjust the supply voltage supplied to the first electrically conductive track based on the temperature of the substrate 131.

As an example, the first electrically conductive track and the second electrically conductive track may be formed on each of both cross sections of the first sheet 132. For example, the first electrically conductive track may be included on one surface of the first sheet 132 that contacts the substrate 131, and the second electrically conductive track may be included on the other surface. Alternatively, the second electrically conductive track may be included on one surface of the first sheet 132 that contacts the substrate 131, and the first electrically conductive track may be included on the other surface.

As another example, the first electrically conductive track and the second electrically conductive track may be included on the same side of both cross sections of the first sheet 132. For example, the first electrically conductive track and the second electrically conductive track may be included on one surface of the first sheet 132 that contacts the substrate 131. Alternatively, the first electrically conductive track and the second electrically conductive track may be included on both surfaces of the first sheet 132 that do not contact the substrate 131.

For example, the first sheet 132 may be a green sheet made of a ceramic composite material. Here, the ceramic may include compounds such as alumina and zircona, but is not limited thereto.

The second sheet 133 may wrap at least a portion of the first sheet 132. In addition, the second sheet 133 may have rigidity. Thus, the second sheet 133 protects the first sheet 132 and the electrically conductive tracks when the heater 130 is inserted into the cigarette 200.

For example, the second sheet 133 may be a green sheet composed of a ceramic composite material. At this time, the ceramic may include compounds such as alumina and zircona, but is not limited thereto.

The second sheet 133 may be coated with a glaze to allow the heater 130 to be easily inserted into the cigarette 200 and to improve the durability of the heater 130. As the second sheet 133 is coated with glaze, the stiffness of the second sheet 133 may increase.

Each of the base material 131, the first sheet 132, and the second sheet 133 may be selectively made of the same material group, for example, ceramic, such as alumina or zircona.

Further, each of the first electrically conductive track and the second electrically conductive track are selectively fabricated from the same material group, for example, stainless steel, tungsten, gold, platinum, silver, copper, nickel, chromium, palladium, or combinations thereof. Can be. At this time, even if the constituent materials of the first electrically conductive track and the constituent materials of the second electrically conductive track are the same, the resistance values of the first electrically conductive track and the second electrically conductive track are the length, width, or pattern of the track. Due to the differences, they may be different.

The first electrically conductive track and the second electrically conductive track may be included in at least one of the first sheet 132 and the second sheet 133. Meanwhile, the number of the first electrically conductive track and/or the second electrically conductive track is not limited. In other words, the first electrically conductive track and/or the second electrically conductive track may be plural. A more detailed description of the first electrically conductive track and the second electrically conductive track will be described later with reference to FIGS. 6 to 8.

Meanwhile, the first electrically conductive track and the second electrically conductive track may not be included in the first sheet 132 or the second sheet 133. In other words, the first electrically conductive track and the second electrically conductive track may be stacked on the substrate 131. When the first electrically conductive track and the second electrically conductive track are laminated on the substrate 131, the first sheet 132 and/or the second sheet 133 may be a coating layer for protecting the electrically conductive track. have.

Meanwhile, as described above with reference to FIG. 1, the heater 130 may be combined with the fixing member 150. For stable use of the aerosol-generating device 100, deformation of the fixing member 150 should not occur even when the heater 130 is heated. Accordingly, the heater 130 may include a first region heated to a high temperature and a second region heated to a temperature lower than the first region. Hereinafter, the first region and the second region of the heater 130 will be described in detail with reference to FIG. 5.

5 is a view for explaining an example of the first area and the second area of the heater.

Referring to FIG. 5, the heater 130 includes a first region 510 and a second region 520.

The first region 510 refers to a region heated to a high temperature in order to generate aerosol in the cigarette 200 or to glass (peel off) the material deposited on the surface of the heater 130. For example, the first region 510 may be heated to about 300°C to about 600°C.

The second region 520 refers to a region exhibiting a lower temperature than the first region 510. For example, the second region 520 may exhibit a temperature of about 300° C. or less. As an example, the second region 520 may be heated to a lower temperature than the first region 510. In this case, the first electrically conductive track includes a plurality of parts made of different materials, and the above-described plurality of parts can be heated to different temperatures. As another example, a portion of the heat generated in the first region 510 may be conducted to the second region 520 to exhibit a lower temperature than the first region 510. In this case, the first electrically conductive track may be located only in the first area 510 of the heater 130.

Meanwhile, the fixing member 150 of the heater 130 may be fixed to a part of the second region 520. In other words, the region 530 in which the fixing member 150 is located may be included in the second region 520. Therefore, even if the first region 510 is heated to a high temperature, a situation in which the fixing member 150 is deformed by heat can be prevented.

However, the fixing member 150 may be installed with some space 540 from the boundary between the first region 510 and the second region 520. In other words, one boundary of the area 530 may be located at a point slightly spaced from the boundary between the first area 510 and the second area 520. The above-described space 540 may be selected as a position where the temperature of the fixing member region 530 may exhibit a sufficient drop compared to the temperature in the first region 510. For example, a region having a temperature of 1/2 or less compared to the highest temperature of the first region 510 may be the fixing member region 530. More specifically, the fixed member region 530 may be selected such that the difference between the highest temperature of the first region 510 and the ambient temperature is at least twice the difference between the temperature of the fixed member region 530 and the ambient temperature. have. For example, when the first region 510 is at a temperature of about 300°C to about 600°C, the fixing member area 530 may exhibit a temperature of about 200°C or less.

However, when the space 540 is larger than necessary, the fixing member 150 may not stably fix the heater 130. Specifically, when the fixing member 150 is excessively located at the distal end of the heater 130, the user drops the aerosol generating device 100 or inserts/withdraws the cigarette 200 into the aerosol generating device 100 If is repeated, the heater 130 may be broken or bent. Therefore, the fixing member 150 is installed in a position capable of stably fixing the heater 130 even when a sufficient drop is seen compared to the temperature in the first region 510.

Meanwhile, although not illustrated in FIG. 5, the heater 130 may further include a third region. Here, the third region refers to a region exhibiting a lower temperature than the first region 510 and the second region 520. For example, the third region may include a connection portion connecting the electrically conductive track to be described later with reference to FIG. 7 to the battery 110.

Hereinafter, the electrically conductive track provided in the heater 130 will be described in detail with reference to FIGS. 6 to 8.

6 is a view for explaining an example of an electrically conductive track.

6 shows an example in which the electrically conductive tracks 610, 620, and 630 are disposed on the first sheet 132. However, as described above with reference to FIG. 4, the electrically conductive tracks 610, 620, and 630 may be disposed on the substrate 131. Also, the electrically conductive tracks 610, 620, and 630 may be disposed on the second sheet 133. Also, part of the electrically conductive tracks 610, 620, and 630 may be omitted by selection.

For stable use, the first sheet 132 may be supplied with power according to the specifications of 3.2 V, 2.4 A, 8 W, but is not limited thereto. For example, when power is supplied to the first sheet 132, the surface temperature of the heater 130 may increase to 300°C or higher. For example, the surface temperature of the heater 130 may rise to about 350° C. before 15 seconds have elapsed from when power is supplied to the heater 130. However, the range of the surface temperature of the heater 130 may be variously changed.

Referring to FIG. 6, on the electrically insulating substrate 600 of the first sheet 132, for sensing the temperature of the first electrically conductive tracks 610 and 620 and the heater 130 for heating the cigarette 200 A second electrically conductive track 630 can be formed. However, a single first electrically conductive track 610 may be formed on the first sheet 132 by selection.

The electrically insulating substrate 600 may be a green sheet made of a ceramic composite material. Here, the ceramic may include compounds such as alumina and zircona, but is not limited thereto. Alternatively, the electrically insulating substrate 600 may be made of paper, glass, ceramic, anodized metal, coated metal, or polyimide. That is, the electrical insulating substrate 600 may be made of various suitable materials.

Each of the first electrically conductive tracks 610 and 620 may be formed on the electrically insulating substrate 600 in the same pattern of paths having different proportions of size. However, the pattern or shape of the first electrically conductive tracks 610 and 620 may be variously implemented in a curved shape or an irregular shape, not an angular shape. For example, the first electrically conductive tracks 610 and 620 may be embodied as a'U' shape or a hairpin.

Furthermore, the pattern or shape of the first electrically conductive tracks 610 and 620 may be different. However, even so, on the electrically insulating substrate 600, the track 610 is a pattern or shape having a size larger than the track 620, and is preferably formed outside the track 620.

For example, the second electrically conductive track 630 may be formed in an area between the track 610 and the track 620.

The second electrically conductive track 630 senses the temperature of the heater 130 heated by the first electrically conductive tracks 610 and 620. In the conventional ceramic heater, only the heating element was present, and the temperature was predicted using the change in resistance of the heating element. However, such a conventional method is difficult to accurately predict the actual temperature of the heating element. Alternatively, in the heater 130 according to the present embodiment, the second electrically conductive track 630 is positioned between the first electrically conductive tracks 610 and 620, so that the first electrically conductive tracks 610 and 620 The temperature can be accurately sensed. Therefore, the temperature of the heater 130 can be accurately measured.

Referring to FIG. 6, the track 610 is formed outside the track 630 and the track 620 is illustrated as being formed inside the track 630. However, the arrangement of the electrically conductive tracks 610, 620, and 630 is not limited to that shown in FIG. 6, and may be formed in various patterns.

The second electrically conductive track 630 may be a first electrically conductive track 610 and 620 and an electrically conductive element having a different resistance temperature coefficient (TCR) or a different resistance value.

For example, the first electrically conductive tracks 610 and 620 have a resistance temperature coefficient between 1200 and 1800 ppm/°C, and the second electrically conductive track 630 has a resistance temperature coefficient between 3500 and 4100 ppm/°C. It may be electrically conductive elements having (or electrical resistive elements). On the other hand, the first electrically conductive heating element 51 and the second electrically conductive heating element 52 have a resistance value between 0.7Ω and 0.85Ω at 25°C at room temperature, and the temperature sensor track 53 is 12Ω to 14Ω at 25°C at room temperature. It may be electrically conductive elements (or electrical resistive elements) having a resistance value between.

The distance A1 or A2 between the track 610 and the track 620 formed on the electrically insulating substrate 600 may be at least 0.5 mm. In addition, the distance (B1 or B2) between the track 620 and the track 630 formed on the electrically insulating substrate 600 may also be at least 0.5 mm. However, this is only an exemplary value, and the above-described interval may be changed due to changes in parameters such as width and thickness of the first electrically conductive tracks 610 and 620 and the second electrically conductive track 630.

On the other hand, the first sheet 132 is a first region that is the region where the first electrically conductive tracks 610 and 620 and the second electrically conductive track 630 are formed, and the first electrically conductive tracks 610 and 620 and The ends of the second electrically conductive track 630 may be divided into a second area that is an area electrically connected to the battery 110. However, only the first region is illustrated in FIG. 6 for convenience of description. Here, the first region refers to the first region 510 described above with reference to FIG. 5, and the second region refers to the second region 520 described with reference to FIG. 5.

Within the first region, the first electrically conductive track 610 has a first end 611 and a second end 612. Within the first region, the second electrically conductive track 620 has a third end 621 and a fourth end 622. Further, within the first region, the first electrically conductive track 630 has a fifth end 631 and a sixth end 632. For example, the fifth end 631 is located between the first end 611 and the third end 621, and the sixth end 632 is between the second end 612 and the fourth end 622. Can be located at

Hereinafter, the second region will be described in more detail with reference to FIG. 7.

7 is a view for explaining another example of the electrically conductive track.

7 shows a first sheet 132 in which a first region and a second region are separated. The first sheet 132 of FIG. 7 includes the features of the first sheet 132 described above with reference to FIG. 6. Therefore, even if omitted, the features of the first sheet 132 described above with reference to FIG. 6 may be applied to the first sheet 132 of FIG. 7.

7, the first region and the second region are illustrated separately. Here, the first region means a heat-generating region, and the second region means a non-heating region.

As described above with reference to FIG. 6, first electrically conductive tracks 710 and 720 and a second electrically conductive track 730 are formed in the first region.

Meanwhile, the second region includes a first connection portion 740 connecting the first terminal 611 and the third terminal 621 described above with reference to FIG. 6 and the battery 110 and the second terminal described with reference to FIG. 6. And a second connection portion 750 connecting the terminal 612 and the fourth terminal 622 with the battery 110. That is, the first connection part 740 and the second connection part 750 are electrically connected to provide power supplied from the battery 110 to the first electrically conductive tracks 710 and 720 and the second electrically conductive track 730. Corresponds to the terminals.

Meanwhile, the second region further includes a pair of via holes 760 and 770 formed at each of the fifth end 631 and the sixth end 632 described above with reference to FIG. 6. The via holes 760 and 770 are electrically connected to the control unit 120. That is, the temperature information sensed by the second electrically conductive track 720 is transmitted to the control unit 120 through via holes 760 and 770 so that the control unit 120 can monitor the temperature of the heater 130.

The first connection portion 740 and the second connection portion 750 may be made of stainless steel, tungsten, gold, platinum, silver, copper, nickel, chromium, palladium, or a combination thereof. Further, the first electrically conductive track can be doped with a suitable doping material and can include an alloy.

The first connection portion 740 and the second connection portion 750 may be made of the same material as the first electrically conductive tracks 710 and 720 and the second electrically conductive track 730. However, since the first connection portion 740 and the second connection portion 750 are located in the second region, the first connection portion 740 and the second connection portion 750 are provided with first electrically conductive tracks 710, 720 and 2 It is preferably made to have a wider width or a larger thickness than the electrically conductive track 730, so that the temperature is lower than that of the first region.

Alternatively, the first connection portion 740 and the second connection portion 750 may be made of materials different from the first electrically conductive tracks 710 and 720 and the second electrically conductive track 730. For example, the first electrically conductive tracks 710 and 720 may be made of gold, and the first connection portion 740 and the second connection portion 750 may be made of silver.

In addition, the first connection portion 740 and the second connection portion 750 may include a bonding pad capable of fixing an external wire using a material or other bonding technique used for soldering. For example, the bonding pad can be coupled to the ends of the first electrically conductive tracks 710, 720.

In addition, the first connecting portion 740 and the second connecting portion 750 may be located in an area opposite to the first area based on the fixing member 150.

Meanwhile, although not illustrated in FIG. 7, the ends 740 and 750 and the via holes 760 and 770 may be disposed in the third region. Here, the third region means a region that exhibits a lower temperature than the first region and the second region. When the ends 740 and 750 and the via holes 760 and 770 are disposed in the third region, the first electric conductive tracks 710 and 720 are disposed in the first region and the second region. Portions can be made of different materials.

Alternatively, the temperature of the first region and the temperature of the second region may be different from each other by manufacturing different widths or thicknesses of the portions disposed in the first region and the portions disposed in the second region. For example, the shape, thickness, or width of the portion disposed in the first region, the portion disposed in the second region, and the ends 740 and 750 may be selected to have desirable resistance and temperature distribution when using the heater 130. Can be. However, the portion disposed in the first region has the greatest electrical resistance per length than the portions and ends 740 and 750 disposed in the second region. Accordingly, when power is supplied to the first electrically conductive tracks 710 and 720, the highest temperature is exhibited in the first region. On the other hand, since the second region and the third region have a structure having a low electrical resistance, they exhibit a lower temperature (preferably, the temperature of the third region is lower than that of the second region) compared to the first region. This means that the resistance change of the portion disposed in the second region and the ends 740 and 750 is smaller than that of the portion disposed in the first region.

As described above with reference to FIGS. 6 and 7, the first electrically conductive tracks 610, 620, 710, 720 are disposed in appropriate areas among the first to third areas of the electrical insulating substrates 600, 700. 2 It has been described that the electrically conductive tracks 630 and 730 or the first connection portion 740 and the second connection portion 750 are located. However, the first to third regions described above may be portions of the first electrically conductive tracks 610, 620, 710, and 720.

In other words, the first electrically conductive tracks 610, 620, 710, and 720 may include a first region and a second region heated to a lower temperature than the first region. At this time, the first region and the second region may have different heating temperatures as one or more of the width, thickness, specific resistance value, and resistance temperature coefficient are different. In addition, a first region of the first electrically conductive tracks 610, 620, 710, and 720 is disposed adjacent to the acutely terminated end of the substrate 131, and the first electrically conductive tracks 610, 620, 710 , 720 may be disposed adjacent to the opposite end of the substrate 131. Also, it is as described above with reference to FIG. 5 that the fixing member 150 may be disposed at a position corresponding to at least a portion of the second region of the first electrically conductive tracks 610, 620, 710, and 720.

8 is a cross-sectional view of the first sheet of FIG. 7 viewed from the side along the X-X' line.

Referring to FIG. 8, the first electrically conductive tracks 710 and 720 and the second electrically conductive track 730 are both formed on the upper surface of the electrically insulating substrate 700. However, via holes 760 and 770 for electrically connecting the second electrically conductive track 730 and the control unit 120 may be formed through the electrically insulating substrate 700.

Meanwhile, the heater 130 may include at least one coating layer. As described above with reference to FIGS. 1 to 8, electrically conductive tracks are provided on the first sheet 132 and/or the second sheet 133, and the first sheet 132 and/or the second sheet 133 ) May be surrounded by the substrate 131. Alternatively, electrically conductive tracks may be directly laminated on the substrate 131. Therefore, for the stable operation of the heater 130, even if the cigarette 200 is repeatedly inserted or removed in the aerosol generating device 100, the electrically conductive tracks should not be damaged or separated from the heater 130. In addition, as the heater 130 heats the cigarette 200, various materials may be deposited on the surface of the heater 130. Accordingly, as the surface of the heater 130 is coated with at least one layer, it is possible to protect the electrically conductive tracks and prevent the heater 130 from being contaminated.

Hereinafter, a coating layer included in the heater 130 will be described with reference to FIG. 9.

9 is a view for explaining an example of the coating layer of the heater.

9 shows an example in which a plurality of coating layers 910 and 920 are included in the heater 130. However, the number of coating layers included in the heater 130 is not limited to that shown in FIG. 9. In other words, the heater 130 may include a single coating layer or two or more coating layers as needed.

As the first coating layer 910 is provided on the heater 130, a stepped surface formed by a lamination structure including the substrate 131, the first sheet 132, and the second sheet 133 This can be flattened. For example, the edges of the first sheet 132 and the edges of the second sheet 133 do not coincide, or due to the thickness of the first sheet 132 and the second sheet 133, a step surface may be formed. . Due to the above-described staircase surface, friction may increase when the heater 130 is inserted into the cigarette 200. In addition, the heater 130 may be deteriorated due to deposition of residues or residues generated from the cigarettes 200 on the surface of the stairs, thereby contaminating the heater 130, thereby reducing the thermal conductivity of the heater 130. . Therefore, in order to flatten the step surface, the first coating layer 910 may be formed on the outer side of the heater 130.

The outer surface of the heater 130 formed of the first coating layer 910 corresponds to the first portion of the coating layer 910 and the base portion of the substrate 131, the first sheet 132 corresponding to the portion of the substrate 131. ) And a base portion of the first coating layer 910 corresponding to the second sheet 133. At this time, the portion leading from the acupuncture portion of the first coating layer 910 to the base portion of the first coating layer 910 may have a smooth outer surface without a step surface or irregularities.

If the electrically conductive tracks are directly stacked on the substrate 131, the first coating layer 910 may serve as a protective film of the heater 130. In this case, the first coating layer 910 improves the degree of thermal distribution over the entire surface of the first region (ie, the heating region).

The first coating layer 910 may include a heat resistant composition. For example, the first coating layer 910 may be composed of a single coating layer of a glass film coating layer, a Teflon coating layer, and a Dermolon coating layer, but is not limited thereto. The first coating layer 910 may be formed of a composite coating layer composed of a combination of two or more of a glass film coating layer, a Teflon coating layer, and a Dermolon coating layer.

Optionally, a second coating layer 920 may be further included on the surface of the heater 130. Here, the second coating layer 920 may serve as an antifouling coating layer or an antifouling coating layer that prevents the heater 130 from being contaminated by various materials. For example, the thickness of the second coating layer 920 may be thinner than the thickness of the first coating layer 910, but is not limited thereto.

10 is a view for explaining simulation results of temperature sensing according to different implementation methods of the second electrically conductive track.

Referring to FIG. 10, the implementation 1001 is an implementation method in which a heating wire track is disposed on the outermost side of a first area (ie, a heating area) of the heater 130 and a temperature sensor track is disposed inside the heating line track. .

Alternatively, in implementation 1002, as described above with reference to FIGS. 6 and 7, the first electrically conductive track is disposed on the outermost and innermost sides of the first area of the heater 130, and the second electrical It is an implementation method (M pattern) in which a conductive track is disposed between the first electrically conductive tracks. In addition, ends of the first electrically conductive tracks and the second electrically conductive track are disposed in the second area (ie, the non-emission area) of the heater 130. Therefore, even if power is supplied to the first electrically conductive track, the second region may exhibit a lower temperature than the first region. In addition, the fixing member 150 of the heater 130 may be installed in the second region.

Alternatively, as described above with reference to FIG. 7, ends of the first electrically conductive tracks and the second electrically conductive track may be disposed in the third region.

Looking at the temperature sensing result 1000 between the distances of 4 mm to 7 mm among the first regions, it can be seen that the temperature sensed by the temperature sensor track of the implementation 1001 is simulated to gradually decrease as the distance increases. . In other words, the temperature sensed by the temperature sensor track of the embodiment 1001 does not uniformly sense the temperature distribution between the distances of 4 mm to 7 mm, making it difficult to accurately measure the temperature of the heater.

However, the second electrically conductive track of the embodiment 1002 according to the present embodiment, even when the temperature is variously set such as 325°C, 320°C, 315°C, makes the corresponding temperature between the distances of 4mm to 7mm almost uniform. You can see that it is sensing. That is, if the first electrically conductive tracks and the second electrically conductive track are arranged in the implementation manner of the implementation 1002 according to the present embodiment, the temperature in the first region of the heater can be sensed more uniformly and accurately. Able to know.

11 is a view for explaining another example of the heater.

11 shows an example of a heater 1100 implemented in the form of heating the outside of the cigarette 200. As an example, the heater 1100, the first sheet 132 and / or the second sheet 133 described above with reference to Figures 4 to 10 is rolled in a hollow cylindrical or tubular, cigarette in the interior space It can be manufactured to accommodate the (200) to heat the outside of the cigarette (200). Here, the first electrically conductive tracks 610, 620, 710, 720 and the second electrically conductive track 630, 730 are disposed on the electrically insulating substrate 600, 700 described above with reference to FIGS. The layer can be rolled up to face the interior space.

As another example, the heater 1100 may take the form of a metallic grid, a flexible printed circuit board, a molded circuit component (MID), a ceramic heater, or a flexible carbon fiber heater. Alternatively, the heater 1100 may be formed on a substrate of a suitable shape using a coating technique such as plasma deposition technique. Here, the heater 1100 may be formed using a metal having a defined relationship between temperature and resistivity. At this time, the metal can be formed as a track between two layers of suitable insulating material. The heater 1100 formed in this way may perform a function of heating and sensing the temperature of an external heater during operation.

Those of ordinary skill in the art related to the present embodiment will understand that it may be implemented in a modified form without departing from the essential characteristics of the above-described substrate. Therefore, the disclosed methods should be considered in terms of explanation, not limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent range should be construed as being included in the present invention.

100: aerosol generating device
130: heater
140: end
150: fixing member
200: cigarette
210: first part
220: part 2

Claims (17)

A substrate having thermal conductivity and electrical insulation, and one end of which is acutely closed;
At least one first electrically conductive track surrounding at least a portion of the substrate and generating heat by the supplied power and at least one second electrically conductive sensing the temperature of the substrate heated by the at least one first electrically conductive track A first sheet comprising a track; And
Includes; a coating layer surrounding the substrate surrounded by the first sheet;
The at least one first electrically conductive track and the at least one second electrically conductive track are separated from each other. According to claim 1,
The first sheet includes a plurality of the first electrically conductive tracks,
The second electrically conductive track is disposed in an area between the first electrically conductive tracks spaced apart from each other on the first sheet. According to claim 1,
The second electrically conductive track is a heater having a different resistance temperature coefficient (TCR) or a different resistance value from the first electrically conductive track. According to claim 1,
The first electrically conductive track,
A first region; And
And a second region having at least one of a width, thickness, specific resistance value, and resistance temperature coefficient different from that of the first region.
The second region is disposed adjacent to the other end of the substrate facing the one end, the heater. The method of claim 4,
The first region is heated to a higher temperature than the second region by the power supplied, the heater. The method of claim 5,
In a position corresponding to at least a portion of the second region, a fixing member surrounding at least a portion of the substrate; further comprising, a heater. The method of claim 6,
The second region,
A space located between the first area; And
A heater including; a fixing member region spaced apart from the first region with the space therebetween. The method of claim 7,
The fixing member,
A heater comprising one or more of ceramic, heat resistant resin, anodized metal, coated metal. The method of claim 8,
The heater is arranged in the aerosol generating device to heat the cigarette inserted in the aerosol generating device. The method of claim 4,
Further comprising; at least one connection portion for connecting the first electrically conductive track and the second electrically conductive track and the battery;
The at least one connecting portion is located in the second area, a heater. The method of claim 10,
The width or thickness of the at least one connecting portion is different from the width or thickness of the first electrically conductive track and the second electrically conductive track. The method of claim 10,
The at least one connection is made of a material different from the first electrically conductive track and the second electrically conductive track, the heater. According to claim 1,
And a second sheet surrounding at least a portion of the substrate surrounded by the first sheet. According to claim 1,
The coating layer includes a plurality of coating layers,
The plurality of coating layers have different thicknesses, heaters. According to claim 1,
The heater is arranged in the aerosol-generating device so that it is located inside the cigarette when the cigarette is inserted into the aerosol-generating device. A sheet comprising at least one first electrically conductive track that generates heat by the supplied power and at least one second electrically conductive track that senses a temperature of a substrate heated by the at least one first electrically conductive track; And
It includes; a coating layer surrounding the substrate surrounded by the sheet;
The sheet is disposed in the aerosol-generating device to be located outside the cigarette when the cigarette is inserted into the aerosol-generating device,
The at least one first electrically conductive track and the at least one second electrically conductive track are separated from each other. A substrate having one end closed at an acute angle and having at least one first electrically conductive track and at least one second electrically conductive track laminated; And
It includes; a coating layer surrounding the substrate;
The first electrically conductive track generates heat by the supplied power, and the second electrically conductive track senses the temperature of the substrate heated by the first electrically conductive track,
The first electrically conductive track and the second electrically conductive track are heaters separated from each other.

Images