KR102052715B1 - Aerosol generating apparatus having heater - Google Patents

Abstract

The aerosol generating device includes a first electrically conductive heating element formed along a first path on a electrically insulating substrate, a second electrically conductive heating element formed along a second path, and a first path to heat a cigarette contained in the aerosol generating device to generate an aerosol. A temperature including a temperature sensor track formed along the third path in the region between the second path and the second path, a battery for supplying power to the heater, and a temperature sensed by the temperature sensor track to control power supplied from the battery to the heater; It includes a control unit for monitoring.

Description

Aerosol Generator with Heater {AEROSOL GENERATING APPARATUS HAVING HEATER}

It relates to an aerosol generating device having a heater.

In recent years there is a growing demand for alternative ways to overcome the shortcomings of common cigarettes. For example, there is an increasing demand for how aerosols are produced as the aerosol generating material in the cigarette is heated, rather than burning the cigarette to produce aerosols. Accordingly, studies on heated cigarette or heated aerosol generating devices are actively progressing.

Various embodiments are directed to providing an aerosol generating device with a heater. The technical problem to be solved by the present disclosure is not limited to the technical problems as described above, and further technical problems can be inferred from the following embodiments.

According to one aspect, the aerosol generating device is a first electrically conductive heating element formed along a first path on an electrically insulating substrate, along a second path on the electrically insulating substrate to heat the cigarette contained in the aerosol generating device to produce an aerosol. A heater comprising a second electrically conductive heating element formed and a temperature sensor track formed along a third path in a region between the first path and the second path; A battery for supplying power to the heater; And a controller configured to control the power supplied from the battery to the heater and to monitor the temperature sensed by the temperature sensor track.

Further, the first path may be formed outside of the third path on the electrically insulating substrate, and the second path may be formed inside of the third path on the electrically insulating substrate.

In addition, the first electrically conductive heating element and the second electrically conductive heating element are heated by the supply of the electric power, and the temperature sensor track is the heater according to the heating of the first electrically conductive heating element and the second electrically conductive heating element. Can sense the temperature.

The heater may further include a heat generating region that is an area where the first electrically conductive heating element, the second electrically conductive heating element, and the temperature sensor track are formed; And a non-heating region in which ends of the first electrically conductive heating element, the second electrically conductive heating element, and the temperature sensor track are areas for electrically connecting with the battery.

Further, the first electrically conductive heating element has a first end and a second end on the first path in the heat generating area, and the second electrically conductive heating element has a third end on the second path in the heat generating area. And a fourth end, wherein the temperature sensor track has a fifth end and a sixth end on the third path in the heat generating area, and the fifth end is the first end and the inside of the heat generating area. Located between the third end, the sixth end may be located between the second end and the fourth end in the heat generating region.

The non-heating region may further include a first connection part connecting the first end and the third end with the battery; A second connection portion connecting the second end and the fourth end with the battery; And a pair of via holes formed in each of the fifth end and the sixth end.

In addition, the first connection portion and the second connection portion are made of the same electrically conductive element as the first electrically conductive heating element and the second electrically conductive heating element, and are wider than the first electrically conductive heating element and the second electrically conductive heating element. It may be manufactured to have or have a large thickness.

The temperature sensor track may be an electrically conductive element having a different thermal coefficient resistance (TCR) or a different resistance value from the first electrically conductive heating element and the second electrically conductive heating element.

Further, the first electrically conductive heating element and the second electrically conductive heating element may have a TCR value between 1200 and 1800 ppm / ° C, and the temperature sensor track may have a TCR value between 3500 and 4100 ppm / ° C.

In addition, the first electrically conductive heating element and the second electrically conductive heating element have a resistance value between 0.7 kPa and 0.85 kPa at a room temperature of 25 ° C, and the temperature sensor track has a resistance value between 12 kPa and 14 kPa at a room temperature of 25 ° C. Can be.

In addition, the distance between the temperature sensor track and the first electrically conductive heating element and the distance between the temperature sensor track and the second electrically conductive heating element may be at least 0.5 mm.

In addition, the heater may be inserted into the inside of the cigarette may be implemented in the form of an internal heater for heating the cigarette or an external heater for heating the outside of the cigarette.

According to another aspect, a heater for an aerosol-generating device for heating an cigarette to generate an aerosol comprises: a first electrically conductive heating element formed along a first path on an electrically insulating substrate; A second electrically conductive heating element formed along a second path on the electrically insulating substrate; And a temperature sensor track formed along a third path in the region between the first path and the second path.

As described above, by placing the temperature sensor track in the region between the different electrically conductive heating elements on the electrically insulating substrate, the temperature sensor track can sense the temperature at the heating portion of the heater more uniformly and accurately.

1 to 3 are views illustrating examples in which a cigarette is inserted into an aerosol generating device.
4 is a view showing an example of a cigarette.
5 is a view illustrating a planar structure of a heating sheet according to an embodiment.
6 is a detailed view of the planar structure of the heating sheet according to one embodiment.
FIG. 7 is a cross-sectional side view of the planar structure of the heating sheet of FIG. 6 along the line XX '.
8 and 9 are views illustrating heaters manufactured using the heating sheet of FIG. 6.
FIG. 10 is a diagram illustrating simulation results of temperature sensing according to different implementation manners of a temperature sensor track.

The terminology used in the embodiments was selected as widely used as possible terms in consideration of functions in the present invention, but may vary according to the intention or precedent of a person skilled in the art, the emergence of new technologies, and the like. In addition, in certain cases, there is also a term arbitrarily selected by the applicant, in which case the meaning will be described in detail in the description of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the contents throughout the present invention, rather than the names of the simple terms.

When any part of the specification is to "include" any component, this means that it may further include other components, except to exclude other components unless otherwise stated. In addition, the terms "... unit", "... module" described in the specification means a unit for processing at least one function or operation, which is implemented in hardware or software or a combination of hardware and software. Can be.

DETAILED DESCRIPTION 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 may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

Hereinafter, with reference to the drawings will be described embodiments of the present invention;

1 to 3 are views illustrating examples in which a cigarette is inserted into an aerosol generating device.

Referring to FIG. 1, an aerosol generating device 10000 includes a battery 11000, a controller 12000, and a heater 13000. 2 and 3, the aerosol generating device 10000 further includes a vaporizer 14000. In addition, a cigarette 20000 may be inserted into the interior space of the aerosol generating device 10000.

In the aerosol generating device 10000 illustrated in FIGS. 1 to 3, components related to the present embodiment are illustrated. Accordingly, it will be understood by those skilled in the art that the general purpose components other than the components illustrated in FIGS. 1 to 3 may be further included in the aerosol generating apparatus 10000. .

In addition, although the heater 13000 is included in the aerosol generating apparatus 10000 in FIGS. 2 and 3, the heater 13000 may be omitted as necessary.

In FIG. 1, the battery 11000, the controller 12000, and the heater 13000 are arranged in a line. In addition, in FIG. 2, the battery 11000, the controller 12000, the vaporizer 14000, and the heater 13000 are arranged in a line. 3, the vaporizer 14000 and the heater 13000 are illustrated in parallel. However, the internal structure of the aerosol generating device 10000 is not limited to that shown in Figs. In other words, the layout of the battery 11000, the controller 12000, the heater 13000, and the vaporizer 14000 may be changed according to the design of the aerosol generating device 10000.

When the cigarette 20000 is inserted into the aerosol generating device 10000, the aerosol generating device 10000 activates the heater 13000 and / or the vaporizer 14000 to produce the cigarette 20000 and / or the vaporizer 14000. Can generate aerosol. The aerosol generated by the heater 13000 and / or the vaporizer 14000 passes through the cigarette 20000 and is delivered to the user.

If necessary, the aerosol generating device 10000 may heat the heater 13000 even when the cigarette 20000 is not inserted into the aerosol generating device 10000.

The battery 11000 supplies power used to operate the aerosol generating device 10000. For example, the battery 11000 may supply power so that the heater 13000 or the vaporizer 14000 may be heated, and may supply power required for the control unit 12000 to operate. In addition, the battery 11000 may supply power required to operate a display, a sensor, a motor, and the like installed in the aerosol generating device 10000.

The controller 12000 generally controls the operation of the aerosol generating device 10000. In detail, the controller 12000 controls the operation of not only the battery 11000, the heater 13000, and the vaporizer 14000, but also other components included in the aerosol generating device 10000. In addition, the controller 12000 may determine the state of each of the components of the aerosol generating device 10000 and determine whether the aerosol generating device 10000 is in an operable state.

The controller 12000 includes at least one processor. The processor may be implemented as an array of multiple logic gates, or may be implemented as a combination of a general purpose microprocessor and a memory storing a program that may be executed on the microprocessor. In addition, it will be understood by those skilled in the art that the present embodiment may be implemented in other forms of hardware.

The heater 13000 may be heated by the power supplied from the battery 11000. For example, when a cigarette is inserted into the aerosol generating device 10000, the heater 13000 may be located outside of the cigarette. Thus, the heated heater 13000 may raise the temperature of the aerosol generating material in the cigarette.

The heater 13000 may be an electrically resistive heater. For example, the heater 13000 may include an electrically conductive track, and the heater 13000 may be heated as a current flows in the electrically conductive track. However, the heater 13000 is not limited to the above-described example, and may be applied without limitation as long as it can be heated to a desired temperature. Here, the desired temperature may be preset in the aerosol generating device 10000, or may be set to a desired temperature by the user.

Meanwhile, as another example, the heater 13000 may be an induction heating heater. Specifically, the heater 13000 may include an electrically conductive coil for heating the cigarette in an induction heating method, and the cigarette may include a susceptor that may be heated by an induction heating heater.

For example, the heater 13000 may include a tubular heating element, a plate heating element, a needle heating element, or a rod-shaped heating element, depending on the shape of the heating element, the inside or outside of the cigarette 20000. Can be heated.

In addition, a plurality of heaters 13000 may be disposed in the aerosol generating device 10000. In this case, the plurality of heaters 13000 may be arranged to be inserted into the cigarette 20000 or may be disposed outside the cigarette 20000. In addition, some of the plurality of heaters 13000 may be disposed to be inserted into the cigarette 20000, and others may be disposed outside the cigarette 20000. In addition, the shape of the heater 13000 is not limited to the shape shown in FIGS. 1 to 3, and may be manufactured in various shapes.

The vaporizer 14000 may generate an aerosol by heating the liquid composition, and the resulting aerosol may be delivered to the user through the cigarette 20000. In other words, the aerosol generated by the vaporizer 14000 may move along the air flow passage of the aerosol generating device 10000, and the air flow passage passes the aerosol generated by the vaporizer 14000 through the cigarette to the user. It can be configured to be.

For example, the vaporizer 14000 may include, but is not limited to, a liquid reservoir, liquid delivery means, and heating element. For example, the liquid reservoir, liquid delivery means and heating element may be included in the aerosol generating device 10000 as an independent module.

The liquid reservoir may store the liquid composition. For example, the liquid composition may be a liquid comprising a tobacco containing material comprising a volatile tobacco fragrance component, or may be a liquid comprising a non tobacco material. The liquid reservoir may be manufactured to be detachable / attached from the vaporizer 14000, or may be manufactured integrally with the vaporizer 14000.

For example, the liquid composition may include water, solvents, ethanol, plant extracts, flavors, flavors, or vitamin mixtures. Perfume may include, but is not limited to, menthol, peppermint, spearmint oil, various fruit flavor ingredients, and the like. Flavoring agents may include ingredients that can provide a variety of flavors or flavors to a user. The vitamin mixture may be a mixture of at least one of vitamin A, vitamin B, vitamin C and vitamin E, but is not limited thereto. Liquid compositions may also include aerosol formers such as glycerin and propylene glycol.

The liquid delivery means may deliver the liquid composition of the liquid reservoir to the heating element. For example, the liquid delivery means may be, but is not limited to, a wick such as cotton fibers, ceramic fibers, glass fibers, porous ceramics.

The heating element is an element for heating the liquid composition delivered by the liquid delivery means. For example, the heating element may be, but is not limited to, a metal heating wire, a metal hot plate, a ceramic heater, and the like. In addition, the heating element may be composed of a conductive filament such as nichrome wire, and may be arranged in a structure wound around the liquid delivery means. The heating element may be heated by a current supply and may transfer heat to the liquid composition in contact with the heating element, thereby heating the liquid composition. As a result, aerosols can be produced.

For example, the vaporizer 14000 may be referred to as a cartomizer or an atomizer, but is not limited thereto.

The aerosol generating device 10000 may further include general components in addition to the battery 11000, the controller 12000, the heater 13000, and the vaporizer 14000. For example, the aerosol generating device 10000 may include a display capable of outputting visual information and / or a motor for outputting tactile information. In addition, the aerosol generating device 10000 may include at least one sensor (puff sensor, temperature sensor, cigarette insert sensor, etc.). In addition, the aerosol generating device 10000 may be manufactured in a structure in which external air may be introduced or internal gas may flow out even when a cigarette 20000 is inserted.

Although not shown in FIGS. 1 to 3, the aerosol generating device 10000 may constitute a system together with a separate cradle. For example, the cradle may be used to charge the battery 11000 of the aerosol generating device 10000. Alternatively, the heater 13000 may be heated while the cradle and the aerosol generating device 10000 are coupled to each other.

The cigarette 20000 may be similar to a general burnable cigarette. For example, the cigarette 20000 may be divided into a first part including an aerosol generating material and a second part including a filter and the like. Alternatively, the aerosol generating material may also be included in the second portion of the cigarette 20000. For example, an aerosol generating material made in the form of granules or capsules may be inserted in the second part.

The entirety of the first portion may be inserted into the aerosol generating device 10000, and the second portion may be exposed to the outside. Alternatively, a part of the first part may be inserted into the aerosol generating device 10000, or a part of the entirety of the first part and a part of the second part may be inserted. The user may inhale the aerosol in the state of opening the second part by mouth. At this time, the aerosol is generated by the external air passing through the first portion, the generated aerosol is passed through the second portion to the user's mouth.

As an example, the outside air may be introduced through at least one air passage formed in the aerosol generating device 10000. For example, opening and closing of the air passage formed in the aerosol generating device 10000 and / or the size of the air passage may be adjusted by a user. Accordingly, the atomization amount, smoking feeling, etc. can be adjusted by the user. As another example, outside air may be introduced into the cigarette 20000 through at least one hole formed in the surface of the cigarette 20000.

Hereinafter, an example of a cigarette 20000 will be described with reference to FIG. 4.

4 is a view showing an example of a cigarette.

Referring to FIG. 4, the cigarette 20000 includes a tobacco rod 21000 and a filter rod 22000. The first portion described above with reference to FIGS. 1 to 3 includes a tobacco rod 21000, and the second portion includes a filter rod 22000.

4 shows the filter rod 22000 as a single segment, but is not limited thereto. In other words, the filter rod 22000 may be composed of a plurality of segments. For example, filter rod 22000 may include a first segment that cools the aerosol and a second segment that filters certain components included in the aerosol. In addition, if necessary, the filter rod 22000 may further include at least one segment that performs another function.

The cigarette 20000 may be wrapped by at least one wrapper 24000. The wrapper 24000 may have at least one hole through which outside air flows or inside gas flows out. As an example, the cigarette 20000 may be wrapped by one wrapper 24000. As another example, the cigarette 20000 may be overlaid by two or more wrappers 24000. For example, the tobacco rod 21000 may be wrapped by the first wrapper, and the filter rod 22000 may be packed by the second wrapper. In addition, the tobacco rod 21000 and the filter rod 22000 packed by the individual wrappers may be combined, and the entire cigarette 20000 may be repackaged by the third wrapper. If each of the tobacco rod 21000 or the filter rod 22000 is composed of a plurality of segments, each segment may be wrapped by a separate wrapper. In addition, the entire cigarette 200,000 to which the segments wrapped by the individual wrappers are combined may be repackaged by another wrapper.

Tobacco rod 21000 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, tobacco rod 21000 may contain other additive materials, such as flavoring agents, wetting agents, and / or organic acids. In addition, a perfume liquid such as menthol or a humectant may be added to the tobacco rod 21000 by spraying the tobacco rod 21000.

The tobacco rod 21000 may be manufactured in various ways. For example, the tobacco rod 21000 may be made of a sheet or may be made of a strand. In addition, the tobacco rod 21000 may be made of chopped tobacco. In addition, the tobacco rod 21000 may be surrounded by a heat conducting material. For example, the heat conducting material may be, but is not limited to, a metal foil such as aluminum foil. For example, the heat conducting material surrounding the tobacco rod 21000 may evenly disperse heat transmitted to the tobacco rod 21000 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 21000 can function as a susceptor heated by an induction heated heater. At this time, although not shown in the figure, the tobacco rod 21000 may further include an additional susceptor in addition to the heat conducting material surrounding the outside.

The filter rod 22000 may be a cellulose acetate filter. On the other hand, the shape of the filter rod 22000 is not limited. For example, the filter rod 22000 may be a cylindrical type rod or may be a tube type rod having a hollow therein. In addition, the filter rod 22000 may be a recess type rod. If the filter rod 22000 is composed of a plurality of segments, at least one of the plurality of segments may be manufactured in a different shape.

The filter rod 22000 may be manufactured to generate flavor. As one example, the fragrance liquid may be injected into the filter rod 22000, or a separate fiber coated with the fragrance liquid may be inserted into the filter rod 22000.

In addition, the filter rod 22000 may include at least one capsule 23000. Here, the capsule 23000 may perform a function of generating a flavor or may perform a function of generating an aerosol. For example, the capsule 23000 may have a structure in which a liquid containing perfume is wrapped in a film. The capsule 23000 may have a spherical or cylindrical shape, but is not limited thereto.

If the filter rod 22000 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 only, but is not limited thereto. Alternatively, the cooling segment can be made of a cellulose acetate filter having a plurality of holes. 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 function of cooling.

On the other hand, although not shown in Figure 4, the cigarette 20000 according to an embodiment may further include a shear filter. The shear filter is located on one side of the tobacco rod 21000 opposite the filter rod 22000. The shear filter may prevent the tobacco rod 21000 from escaping to the outside and prevent the liquefied aerosol from the tobacco rod 21000 from flowing into the aerosol-generating device (10000 in FIGS. 1 to 3) during smoking. have.

Hereinafter, the structure of the heating sheet for manufacturing the heater 13000 of the aerosol generating device 10000 of FIGS. 1 to 3 will be described in more detail. Therefore, the reference numerals of the drawings used in FIGS. 1 to 3 may be equally used in the description of the following drawings.

5 is a view illustrating a planar structure of a heating sheet according to an embodiment.

As shown in FIG. 1, the heater 13000 may be implemented in the form of a combination of a cylinder and a cone, and may be implemented in the form of an internal heater inserted into a cigarette 20000, or as shown in FIGS. 2 and 3. ) May be implemented in a cylindrical (or tubular) form of an external heater for heating the outside of the cigarette (20000). 5 is a plan view of the heating sheet 500 for manufacturing the heater 13000 (internal heater or external heater).

The heater 13000 may be a heater implemented using an electrically resistive element. For example, the heater 13000 may include a heating sheet 500 provided with an electrically resistive heating element such as an electrically conductive track. The electrically resistive heating element may be supplied with power from the battery 11000 and heated as a current flows through the electrically resistive heating element.

For stable use, the heating sheet 500 of the heater 13000 may be supplied with power according to the standard of 3.2 V, 2.4 A, 8 W, but is not limited thereto. For example, when electric power is supplied to the heating sheet 500 of the heater 13000, the surface temperature of the heater 13000 may rise to 400 ° C. or more. The surface temperature of the heater 13000 may rise to about 350 ° C. before exceeding 15 seconds from when power is supplied to the heater 13000. However, the temperature range to be raised may be variously changed.

Referring to the planar structure of the heating sheet 500 of the heater 13000, on the electrically insulating substrate 50 of the heating sheet 500 are electrically conductive tracks for heating a cigarette 20000 contained in the aerosol generating device 10000. The first electrically conductive heating element 51 and the second electrically conductive heating element 52 are formed, and the temperature sensor track 53 for sensing the temperature of the heater 13000 when the electrically conductive heating elements 51 and 52 are heated. ) Is also formed.

The electrically insulating substrate 50 may correspond to a green sheet made of a ceramic composite material. Alternatively, the electrically insulating substrate 50 may be made of paper, glass, ceramic, anodized metal, coated metal, or polyimide. That is, the electrically insulating substrate 50 may be a substrate made of various suitable materials.

The first electrically conductive heating element 51 and the second electrically conductive heating element 52 are made of an electrically resistive element such that a heating temperature can be determined according to the power consumption of the resistance, and the first electrically conductive heating element 51 and the second electric Resistance values of the first electrically conductive heating element 51 and the second electrically conductive heating element 52 may be set based on power consumptions of the resistances of the conductive heating element 52.

For example, the resistance values of the first electrically conductive heating element 51 and the second electrically conductive heating element 52 may have a value between 0.7 kV and 0.85 kV at 25 degrees Celsius, but are not limited thereto. The resistance values of the first electrically conductive heating element 51 and the second electrically conductive heating element 52 may be variously set according to the material, length, width, thickness, or pattern of the electrically resistive element.

According to the resistance temperature coefficient characteristic of the first electrically conductive heating element 51 and the second electrically conductive heating element 52, the magnitude of the internal resistance may increase as the temperature increases. For example, the temperature and the magnitude of the resistance of the first electrically conductive heating element 51 and the second electrically conductive heating element 52 may be proportional to each other in a predetermined temperature range.

The first electrically conductive heating element 51 and the second electrically conductive heating element 52 may be made of tungsten, gold, platinum, silver copper, nickel palladium, or a combination thereof. In addition, the first electrically conductive heating element 51 and the second electrically conductive heating element 52 may be doped with a suitable dopant and may include an alloy.

Referring to FIG. 5, the first electrically conductive heating element 51 on the electrically insulating substrate 50 may be formed along a first path outside the second electrically conductive heating element 52. The second electrically conductive heating element 52 may be formed along the second path inside the first electrically conductive heating element 51 on the electrically insulating substrate 50. That is, the planar structure of the heating sheet 500 according to the present embodiment includes a pair of electrically conductive heating elements 51 and 52 formed on the electrically insulating substrate 50.

Each of the first electrically conductive heating element 51 and the second electrically conductive heating element 52 may be formed on the electrically insulating substrate 50 in angular paths of the same pattern having different ratio sizes. However, the pattern or shape of the first path and the second path of the first electrically conductive heating element 51 and the second electrically conductive heating element 52 may be variously implemented in a curved form or an amorphous form, rather than an angled form. have. Furthermore, the pattern or shape of the first path and the second path of the first electrically conductive heating element 51 and the second electrically conductive heating element 52 may be different from each other. However, even so, the first electrically conductive heating element 51 on the electrically insulating substrate 50 is a pattern or shape of a size larger than that of the second electrically conductive heating element 52, and is formed outside the second electrically conductive heating element 52. It is preferably formed.

The temperature sensor track 53 is formed along the third path on the electrically insulating substrate 50 in the region between the first path of the first electrically conductive heating element 51 and the second path of the second electrically conductive heating element 52. do.

The temperature sensor track 53 senses the temperature of the heater 13000 heated by the first electrically conductive heating element 51 and the second electrically conductive heating element 52. In the conventional ceramic heater, only the heating element was present, and the temperature was predicted by using the resistance change of the heating element. However, such a conventional method is difficult to accurately predict the temperature of the actual heating element. On the contrary, the heating sheet 500 of the heater 13000 according to the present exemplary embodiment has the temperature sensor track 53 positioned between the electrically conductive heating elements 51 and 52 on a planar structure to electrically conductive heating elements 51 and 52. The temperature of the heater 13000 can be accurately measured by uniformly sensing the temperature of the heater.

The temperature sensor track 53 may be made of an electrically resistive element or an electrically conductive element like the first electrically conductive heating element 51 and the second electrically conductive heating element 52. For example, the temperature sensor track 53 may be made of tungsten, gold, platinum, silver copper, nickel palladium, or a combination thereof, and may be doped with a suitable dopant or include an alloy.

Referring to the planar structure of the heating sheet 500, the first path of the first electrically conductive heating element 51 is formed outside the third path of the temperature sensor track 53 on the electrically insulating substrate 50, and the second path of the heating element 500 is formed. The second path of the electrically conductive heating element 52 is formed inside the third path of the temperature sensor track 53 on the electrically insulating substrate 50.

The temperature sensor track 53 may be an electrically conductive element having a different thermal coefficient of resistance (TCR) or a different resistance value from the first electrically conductive heating element 51 and the second electrically conductive heating element 52.

Specifically, the first electrically conductive heating element 51 and the second electrically conductive heating element 52 have a TCR value between 1200 and 1800 ppm / ° C, and the temperature sensor track 53 has a TCR between 3500 and 4100 ppm / ° C. Electrical conductive elements (or electrically resistive elements) having a value. On the other hand, the first electrically conductive heating element 51 and the second electrically conductive heating element 52 have a resistance value between 0.7 kPa and 0.85 kPa at a room temperature of 25 ° C, and the temperature sensor track 53 is 12 kPa to 14 kPa at a room temperature of 25C. Electrical conductive elements (or electrical resistive elements) having a resistance value therebetween.

The distance A1 or A2 between the first electrically conductive heating element 51 and the temperature sensor track 53 formed on the electrically insulating substrate 50 may be at least 0.5 mm. In addition, the distance B1 or B2 between the second electrically conductive heating element 52 and the temperature sensor track 53 formed on the electrically insulating substrate 50 may also be at least 0.5 mm. However, this is only an exemplary value, and the above-described spacing may be changed due to a change in parameters such as width and thickness of the electrically conductive heating elements 51 and 52 and the temperature sensor track 53.

On the other hand, referring to the planar structure of the heating sheet 500, a heat generating region which is a region where the first electrically conductive heating element 51, the second electrically conductive heating element 52 and the temperature sensor track 53 are formed, and the first electrically conductive Terminals of the heating element 51, the second electrically conductive heating element 52, and the temperature sensor track 53 may be divided into a non-heating area, which is an area for electrically connecting the battery 11000. In FIG. 5, only the heat generating region is shown for convenience of description.

Within the heat generating region, the first electrically conductive heating element 51 has a first end 511 and a second end 512 on the first path. Within the heat generating region, the second electrically conductive heating element 52 has a third end 521 and a fourth end 522 on the second path. Within the heating zone, the temperature sensor track 53 has a fifth end 531 and a sixth end 532 on the third path.

Here, the fifth end 531 of the temperature sensor track 53 is the first end 511 of the first electrically conductive heating element 51 and the third end 521 of the second electrically conductive heating element 52 in the heating region. ), The sixth end 532 of the temperature sensor track 53 is the fourth end of the second electrically conductive heating element 52 and the second end 512 of the first electrically conductive heating element 51 within the heating zone. It is located between the ends 522.

The non-heating region will be described in more detail with reference to FIG. 6.

6 is a detailed view of the planar structure of the heating sheet according to one embodiment.

Referring to the planar structure of the heating sheet 600 of the heater 13000 illustrated in FIG. 6, the heating area and the non-heating area are shown separately. In the heating region of the heating sheet 600, as illustrated in FIG. 5, a first electrically conductive heating element 51, a temperature sensor track 53 inside thereof, and a second electrically conductive heating element 52 inside thereof are formed. It is.

The non-heating region of the heating sheet 600 includes a first connection portion 61 connecting the first end 511 and the third end 521 described with reference to FIG. 5 with the battery 11000, and the second operation described with reference to FIG. 5. And a second connection 62 connecting the end 512 and the fourth end 522 with the battery 11000. That is, the first connection portion 61 and the second connection portion 62 are connected to the electrical connection terminals that provide the power supplied from the battery 11000 to the first electrically conductive heating element 51 and the second electrically conductive heating element 52. Corresponding.

On the other hand, the non-heating region further includes a pair of via holes 63 and 64 formed at each of the fifth end 531 and the sixth end 532 described in FIG. 5. The pair of via holes 63 and 64 are electrically connected to the controller 12000. That is, the temperature information sensed by the temperature sensor track 53 is transmitted to the controller 12000 through the via holes 63 and 64, so that the controller 12000 may monitor the temperature of the heater 13000.

The first connecting portion 61 and the second connecting portion 62 may be made of the same electrically conductive element (or electrically resistive element) as the first electrically conductive heating element 51 and the second electrically conductive heating element 52. However, since the first connection portion 61 and the second connection portion 62 are located in the non-heating region, the first connection portion 61 and the second connection portion 62 are formed of the first electrically conductive heating element 51 and the second electrically conductive portion. It is preferably implemented to have a wider width or a larger thickness than the heating element 52 so that the temperature is lower than the heating region.

FIG. 7 is a cross-sectional view of the planar structure of the heating sheet of FIG. 6 taken along the line X-X '.

Referring to FIG. 7, both the first electrically conductive heating element 51, the second electrically conductive heating element 52, and the temperature sensor track 53 are formed on the upper surface of the electrically insulating substrate 50. However, via holes 63 and 64 for electrically connecting the temperature sensor track 53 and the controller 12000 may be formed through the electrically insulating substrate 50.

8 and 9 are views illustrating heaters manufactured using the heating sheet of FIG. 6.

FIG. 8 is a view of a heater 13000 implemented as an internal heater form 800 that is manufactured in a combined shape of the cylinder and the cone described in FIG. 1 and inserted into a cigarette 20000. Specifically, the heater 13000 of FIG. 1 corresponding to the internal heater form 800 has a structure in which the heating sheet 600 of FIG. 6 surrounds the outside of the structure 80 having a combination of a cylinder and a cone. 80) can be manufactured integrally with. Here, the upper surface of the electrically insulating substrate 50 described in FIG. 7, that is, the layer on which the electrically conductive heating elements 51 and 52 and the temperature sensor track 53 are formed, surrounds the outside of the structure 80 so as to face the outermost side. It can be cheap.

FIG. 9 is a view of a heater 13000 implemented in an external heater form 900 for heating the outside of the cigarette 20000 described in FIG. 2 or FIG. 3. Specifically, the heater 13000 of FIG. 2 or 3 corresponding to the external heater form 900 receives the cigarette 20000 in the inner space by the heating sheet 600 of FIG. 6 being rolled into a hollow cylindrical or tubular shape. It can be manufactured to heat the outside of the cigarette (20000). Here, the upper surface of the electrically insulating substrate 50 described in FIG. 7, that is, the layer on which the electrically conductive heating elements 51 and 52 and the temperature sensor track 53 are formed may be rolled toward the inner space.

FIG. 10 is a diagram illustrating simulation results of temperature sensing according to different implementation manners of a temperature sensor track.

Referring to FIG. 10, the embodiment 1001 is an embodiment in which an electrically conductive heating element is disposed at the outermost side and a temperature sensor track is disposed inside the electrically conductive heating element.

Alternatively, embodiment 1002 may include a first electrically conductive heating element disposed at the outermost side, a temperature sensor track disposed inside the first electrically conductive heating element, and as described in FIG. 6 according to this embodiment. An implementation method (M pattern) in which an electrically conductive heating element is additionally disposed on the innermost side of the temperature sensor track.

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

However, the temperature sensor track of the embodiment 1002 according to the present embodiment, even when the temperature is set variously, such as 325 ° C, 320 ° C, 315 ° C, the temperature is sensed almost uniformly between the distance 4-7 mm. It can be seen that. That is, when the electrically conductive heating elements and the temperature sensor track are arranged in the implementation manner of the embodiment 1002 according to the present embodiment, it can be seen that the temperature at the heating portion of the heater can be sensed more uniformly and accurately.

Those skilled in the art will appreciate that the present invention may be embodied in a modified form without departing from the essential characteristics of the above-described substrate. Therefore, the disclosed methods should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

Claims (15)

A first electrically conductive heating element formed along a first path on an electrically insulating substrate, a second electrically conductive heating element formed along a second path on the electrically insulating substrate and the first to heat the cigarette contained in the aerosol-generating device to produce an aerosol. A heater comprising a temperature sensor track formed along a third path in an area between the first path and the second path;
A battery for supplying power to the heater; And
A control unit for controlling the electric power supplied from the battery to the heater,
The first path is formed outside of the second path on the electrically insulating substrate,
The heater may include a heating region in which the first electrically conductive heating element, the second electrically conductive heating element, and the temperature sensor track are formed, and ends of the first electrically conductive heating element, the second electrically conductive heating element, and the temperature sensor track. A non-heating area, the area for electrically connecting with the battery,
The non-heating region may include a connection portion connecting the ends of the first electrically conductive heating element and the second electrically conductive heating element with the battery, and a pair of via holes formed in each of the ends of the temperature sensor track. Including, an aerosol generating device. delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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