WO2015046384A1

WO2015046384A1 - Flavor inhalator

Info

Publication number: WO2015046384A1
Application number: PCT/JP2014/075536
Authority: WO
Inventors: 健秋山; 山田　学
Original assignee: 日本たばこ産業株式会社
Priority date: 2013-09-30
Filing date: 2014-09-25
Publication date: 2015-04-02
Also published as: TW201517819A; EA201690711A1; KR20160052672A; KR101888282B1; EA030672B1

Abstract

A flavor inhalator (1) is provided with a carbon heat source (10) and a holding section (3) which has a cylindrical outer wall (31). The carbon heat source (10) is provided with: a circular cylinder section (11) having provided therein a single hollow cavity (11A) extending in the longitudinal axis direction (L) of the carbon heat source (10); and an ignition end section (12) provided closer to the ignition side of the carbon heat source (10) than the circular cylinder section (11). A groove (12X) connecting to the hollow cavity (11A) is formed in the ignition-side end surface (10a) of the ignition end section (12). The outer wall (31) is provided with a thermally conductive member (312), and at least a part of the thermally conductive member (312) is adjacent to the carbon heat source (10).

Description

Flavor suction tool

The present invention relates to a flavor suction tool.

Conventionally, various proposals have been made on a flavor suction device that has a carbon heat source and is configured to heat the flavor generation source by heat generated from the carbon heat source.

For example, Patent Document 1 describes a flavor suction device having a carbon heat source in which a ridge groove is formed across an ignition end at an ignition end (an end surface on the ignition side) in order to improve ignition performance.

Patent Document 2 describes a flavor suction device having a cylindrical carbon heat source having a through hole with a diameter of 1.5 mm to 3 mm.

Here, it is preferable that the carbon heat source used for the flavor suction tool satisfies the following conditions.

The first condition is that ignitability is good and a sufficient amount of heat is supplied during the period from the start of combustion to the initial puff (smoke absorption).

The second condition is to supply a stable amount of heat with little fluctuation in the amount of heat generated during puffing (smoke absorption) from the middle to the second half.

Also, the third condition is to ensure that the fire is extinguished at the end of combustion.

On the other hand, the carbon heat source described in Patent Document 1 can improve the ignitability in the period from the start of combustion to the initial puff by the groove formed at the ignition end. The contact area between the ignition source and the ignition end is merely increased, and the air flow in the period from the start of combustion to the initial puff is not efficiently transferred to the ignition end. Therefore, the effect is insufficient.

In addition, the carbon heat source described in Patent Document 1 is used in a flavor suction device configured to transmit heat generated in the carbon heat source to the flavor generation source via an enclosure member or a holding member of the carbon heat source. Therefore, when used in a flavor suction device configured to transmit heat generated in a carbon heat source to the flavor generation source mainly by convective heat transfer, a stable amount of heat during puffing from the middle to the latter half is used. There was a problem that supply was difficult.

Moreover, since the carbon heat source described in Patent Document 2 has a uniform cylindrical shape over the entire length, that is, since no groove or the like is formed at the ignition end, ignition of a lighter or the like that is generally circulated is performed. In the source, it is difficult to efficiently transfer heat to the ignition end, and it is difficult to obtain good ignitability during the period from the start of combustion to the initial puff.

As in these

Patent Documents

1 and 2, in the conventional integrally formed carbon heat source, both good ignitability from the start of combustion to the initial puff and stable supply of heat during the puff from the middle to the latter half are achieved. It was very difficult. Furthermore, a countermeasure has been desired in that the combustion is extinguished at the end of the combustion.

JP-A-5-103836 Special table 2010-535530 gazette

The first feature is a flavor suction device comprising a columnar carbon heat source (carbon heat source 10) and a holding part having a cylindrical outer wall for holding the carbon heat source, wherein the carbon heat source is the carbon heat source. A cylinder part provided with one cavity extending along the longitudinal axis direction of the gas, and an ignition end part provided closer to the ignition side of the carbon heat source than the cylinder part, and the ignition end part A groove communicating with the cavity is formed on an end surface of the ignition side of the gas, and the ignition end has a space communicating with the cavity in an extension direction of the cavity provided in the cylindrical portion, The groove is formed separately from the gap, and in the holding portion, the outer wall includes a heat conductive member (heat conductive member 312), and at least a part of the heat conductive member is adjacent to the carbon heat source. This is the gist.

According to a second feature, in the first feature, a flavor generation source (flavor generation source 2) including at least one volatile flavor component is provided inside the holding portion, and the heat conducting member is The gist extends from at least the carbon heat source to the flavor generation source.

The third feature is summarized in that, in the first feature or the second feature, the groove is exposed to a side surface of the ignition end.

The fourth feature is any one of the first feature to the third feature, wherein the cylindrical portion has a cylindrical shape. The gist is that the difference between the diameter of the cavity and the outer diameter of the carbon heat source is 1 mm or more.

The fifth feature is summarized in that, in the first to fourth features, the cylindrical portion and the ignition end portion are integrally formed.

The sixth feature is that in the first feature to the fifth feature, the size of the carbon heat source is 10 mm to 30 mm in the longitudinal axis direction of the carbon heat source. The gist is that the size of the carbon heat source is configured to be 4 mm to 8 mm in a direction orthogonal to the longitudinal direction.

The seventh feature is that, in the first feature to the sixth feature, the size of the cavity is configured to be 1 mm to 4 mm in a direction orthogonal to a longitudinal axis direction of the carbon heat source. And

FIG. 1 is a diagram illustrating a flavor suction device according to an embodiment. FIG. 2 is a diagram illustrating the carbon heat source according to the embodiment. FIG. 3 is a diagram illustrating the carbon heat source according to the embodiment. FIG. 4 is a diagram illustrating an example of a groove formed at an ignition end in the carbon heat source according to the embodiment. FIG. 5 is a diagram illustrating an example of a groove formed at an ignition end in the carbon heat source according to the embodiment. Drawing 6 is a figure for explaining a method of manufacturing carbon heat source 10 concerning an embodiment. FIG. 7 is a diagram for explaining the first embodiment. FIG. 8 is a diagram for explaining the second embodiment. FIG. 9 is a diagram illustrating a carbon heat source according to the first modification. FIG. 10 is a diagram illustrating the carbon heat source according to the first modification. FIG. 11 is a diagram illustrating the heat conducting member according to the second modification.

(One embodiment)
With reference to FIG. 1 thru | or FIG. 6, the flavor suction tool 1 which concerns on one Embodiment is demonstrated.

Here, FIG. 1 is a figure which shows the cross section of the flavor suction tool 1 which concerns on embodiment, FIG.2 (a) is a figure which shows the cross section of the carbon heat source 10 which concerns on embodiment, FIG.2 (b) These are the figures which looked at the carbon heat source 10 which concerns on embodiment from the ignition end surface 10a side, and FIG.2 (c) is the figure which looked at the carbon heat source 10 which concerns on embodiment from the suction end 10b ignition end surface 10a side. . Specifically, FIG. 1 and FIG. 2A are views of the S cross section shown in FIG. 2B viewed from the T side. The S cross section is a cross section passing through the center (axis AX) of the cavity 11A and passing through a groove 12B described later.

As shown in FIG. 1, the flavor suction device 1 according to the embodiment includes a flavor generation source 2, a carbon heat source 10, a filter 4, a flavor generation source 2, a carbon heat source 10, and a filter 4. It has.

In addition, the flavor suction tool 1 has the longitudinal direction L which is a direction along the axis AX, and the short direction D orthogonal to the longitudinal direction L. In the embodiment, for the sake of explanation, in the longitudinal axis direction L, the carbon heat source 10 side of the flavor suction device 1 is defined as the ignition end side (left side shown in FIG. 1), and the filter 4 side of the flavor suction device 1 is sucked. It is defined as the mouth side (the right side shown in FIG. 1).

In the flavor suction tool 1, when a user puts a mouth on the end on the filter 4 side and sucks, an air flow is generated from the end on the carbon heat source 10 side toward the end on the filter 4 side.

The flavor generating source 2 is provided between the carbon heat source 10 and the filter 4 inside the holding unit 3. The flavor source 2 contains at least one volatile flavor component. The flavor generating source 2 releases the flavor by the heat generated by the carbon heat source 10 being transferred by the air flow.

For example, cigarette leaves can be used as the flavor source 2, and cigarettes such as general cigarettes used for cigarettes (cigarettes), granular cigarettes used for snuff, roll cigarettes, and molded cigarettes. Raw materials can be employed. Further, as the flavor generation source 2, a porous material or a non-porous material carrier may be employed.

Note that the roll tobacco is obtained by forming a sheet of regenerated tobacco into a roll shape, and has a flow path inside. In addition, molded tobacco is obtained by molding granular tobacco.

Furthermore, a desired fragrance may be contained in the tobacco raw material or carrier used as the above-described flavor generating source 2. For example, the flavor generating source 2 may be configured to include a polyhydric alcohol such as glycerin or propylene glycol, and may have a configuration in which nicotine released from a separately prepared nicotine source is captured by a carrier.

In the example of FIG. 1, the flavor generating source 2 is arranged in the holding unit 3 so as to provide a predetermined gap in the longitudinal axis direction L from the carbon heat source 10, but is not limited thereto. For example, the flavor generating source 2 may be arranged so as to contact the carbon heat source 10.

Moreover, in the holding | maintenance part 3, by arrange | positioning a space | gap part or a nonflammable member which has air permeability between the carbon heat source 10 and the flavor generation source 2, the carbon heat source 10 and the flavor generation source 2 do not adjoin. It may be configured.

The holding unit 3 includes a cylindrical outer wall 31 that holds the carbon heat source 10 and a cavity 32 that is formed by the outer wall 31 so as to extend along the longitudinal direction L. In the holding part 3, the outer wall 31 may be formed as a hollow cylindrical body, for example, by curving a rectangular sheet-like member into a cylindrical shape and combining both side edges.

In the embodiment, the outer wall 31 is formed by stacking a plurality of sheet-like members. Specifically, the outer wall 31 includes an exterior member 311 and a heat conductive member 312, and is formed by bending the exterior member 311 and the heat conductive member 312 into a cylindrical shape.

In the embodiment, the exterior member 311 is made of cardboard for packaging. In addition, the exterior member 311 may be comprised with the well-known packaging paper used for tobacco packaging.

The heat conducting member 312 extends at least from the carbon heat source 10 to the flavor generating source 2. In the longitudinal axis direction L, the length L0 of the exterior member 311 and the length of the heat conducting member 312 are the same. The length Ls of the heat conducting member 312 may be different from the length L0 of the exterior member 311. Specifically, the length Ls of the heat conducting member 312 may be shorter than the length L0 of the exterior member 311, for example, 20 mm.

In the embodiment, at least a part of the heat conducting member 312 is adjacent to the carbon heat source 10. Specifically, the heat conducting member 312 has a contact portion that abuts on the outer surface (outer peripheral surface) of the carbon heat source 10 in the short direction D. The heat conducting member 312 also contacts the outer surface (outer peripheral surface) in the short direction D of the flavor generating source 2 and the outer surface (outer peripheral surface) in the short direction D of the filter 4.

Further, as shown in FIG. 1, the heat conducting member 312 has an end portion 312 a on the ignition end side and an end portion 312 b on the mouth end side in the longitudinal axis direction L. The end portion 312 a on the ignition end side of the heat conducting member 312 is located closer to the ignition end side than the suction end 10 b of the carbon heat source 10. On the other hand, the end portion 312 a on the ignition end side of the heat conducting member 312 is located closer to the suction side than the ignition end surface 10 a of the carbon heat source 10.

In other words, the length Lx between the end portion 312a on the ignition end side of the heat conducting member 312 and the mouth end 10b of the carbon heat source 10 is 0 mm or more. The length Lx is shorter than the length Ly in the longitudinal axis direction L of the carbon heat source 10. Note that the length Lx may be ½ or less of the length Ly, or may be ¼ or less of the length Ly. The length Lx can also be referred to as the length in the longitudinal axis direction L of the contact portion of the heat conducting member 312 that contacts the carbon heat source 10.

It is preferable to apply a member excellent in non-combustibility to the heat conducting member 312. In addition, it is preferable to apply a member having excellent thermal conductivity to the heat conductive member 312. Furthermore, considering that the heat generated by the carbon heat source 10 is efficiently transferred to the flavor generating source 2 by the air flow, it is preferable to apply a member having excellent airtightness to the heat conducting member 312. Considering such a viewpoint, it is preferable to apply a metal member to the heat conducting member 312, and more preferable to apply aluminum in particular.

The filter 4 is provided on the most suction side inside the holding unit 3. In the example of FIG. 1, the filter 4 is disposed in the holding unit 3 so as to provide a predetermined gap in the longitudinal axis direction L from the flavor generation source 2, but is not limited thereto. For example, the filter 4 may be disposed so as to contact the flavor generation source 2.

Filter 4 can include cellulose acetate, paper, or other suitable known filter member. The filter 4 may include at least one volatile flavor component.

Moreover, as shown in FIG. 1, the visibility of the combustion state of the carbon heat source 10 can be improved by exposing at least a part of the carbon heat source 10 from the holding unit 3. In such a case, the manufacturing process of the cavity 11A can be facilitated.

2 and 3, the carbon heat source 10 has a columnar shape and includes a cylindrical portion 11 and an ignition end portion 12.

As shown in FIG. 2A, the cylindrical portion 11 is provided with a cavity 11 A that extends along the longitudinal axis direction L of the carbon heat source 10.

Further, as shown in FIG. 2C, the cavity 11 A may have a shape of a coaxial cylinder having the same central axis as the central axis of the cylindrical portion 11 over the entire length of the carbon heat source 10. . In such a case, the manufacturing process of the cavity 11A can be facilitated.

Here, in order to supply a stable amount of heat at the time of puffing from the middle to the second half, that is, to suppress the amount of fluctuation between the amount of heat generated during natural combustion (non-smoke absorption) and the amount of heat generated during puffing. Is preferably a shape with a reduced contact area between the inflowing air and the combustion region during puffing.

Therefore, for example, as shown in FIG. 2 (a), the variation between the calorific value at the time of natural combustion and the calorific value at the time of puffing can be suppressed by forming a cylindrical shape having only a single cavity 11A. Is possible.

Here, the difference (the thickness of the cylindrical portion 11) between the diameter R1 of the cavity 11A and the outer diameter R2 of the carbon heat source (cylindrical portion 11) is to obtain sufficient ignitability in accordance with the carbon blending ratio of the carbon heat source. Is appropriately selected, but it may be configured to be 1 mm or more, preferably 1.5 mm or more, more preferably 2.0 mm or more. With such a configuration, the user can perform flavor suction a sufficient number of times.

Moreover, the diameter R1 of the cavity 11A may be configured to be 1 mm or more, preferably 1.5 mm or more, more preferably 2.0 mm or more. With this configuration, it is possible to reduce pressure loss that occurs during suction.

Alternatively, the cavity 11A may have a shape with different diameters along the longitudinal axis direction L, such as a conical shape. In such a case, the amount of heat supplied at the time of puffing from the middle stage to the latter half can be precisely controlled.

As shown in FIG. 2A, the ignition end portion 12 is provided on the ignition side (ignition end surface 10a) side of the carbon heat source 10 with respect to the cylindrical portion 11. The ignition end portion 12 has a gap communicating with the cavity 11A in the extending direction of the cavity 11A provided in the cylindrical portion 11. In the embodiment, the size of the gap of the ignition end 12 in the cross section orthogonal to the axis AX is smaller than the size of the cavity 11A in the cross section orthogonal to the axis AX. However, the size of the gap of the ignition end 12 in the cross section orthogonal to the axis AX may be the same as the size of the cavity 11A in the cross section orthogonal to the axis AX.

Further, as shown in FIGS. 2B and 3, a groove 12 A and a groove 12 B are formed as a groove 12 X communicating with the cavity 11 A on the ignition end surface 10 a in the ignition end portion 12. It should be noted that the groove 12 A and the groove 12 B are formed separately from the gap at the ignition end 12. That is, through holes (cavities 11A of the cylindrical portion 11 and voids of the ignition end portion 12) penetrating along the longitudinal axis direction L are formed over the entire carbon heat source, and the through holes are exposed to the ignition end surface 10a. It should be noted that the through hole exposed to the ignition end face 10a does not correspond to the groove 12A and the groove 12B. Here, the groove 12A is a hollow portion having a groove bottom 121A, and the groove 12B is a hollow portion having a groove bottom 121B.

According to such a configuration, in order to reduce the “area of the ignition end face 10a (excluding the area of the portion where the groove 12A is formed)” and increase the “area of the groove wall in the groove 12X”, the lighter or the like is ignited. The heat of the source is efficiently transmitted to the ignition end, and good ignitability can be obtained in the period from the start of combustion to the initial puff.

That is, in order to obtain sufficient ignitability, the ratio of the “area of the groove wall in the groove 12X” to the “area of the ignition end face 10a (excluding the area of the portion where the groove 12X is formed)”, “in the groove 12X It is desirable that “the area of the groove wall” / “the area of the ignition end face 10a (excluding the area of the portion where the groove 12X is formed)” is larger.

The ratio of the “area of the groove wall in the groove 12X” to the “area of the ignition end face 10a (excluding the area of the portion where the groove 12X is formed)” is sufficient ignitability according to the carbon blending ratio of the carbon heat source, etc. The numerical value for obtaining the value is appropriately selected. For example, sufficient ignitability can be obtained by setting the value to 0.5 or more, preferably 1.25 or more, and more preferably 2.5 or more.

Here, “the area of the ignition end face 10a (excluding the area of the portion where the groove 12X is formed)” is the area of the hatched portion shown in FIG. 5, and “the area of the groove wall in the groove 12X” is “ignition” The total length of the groove 12X on the end face 10a (the total length of the eight sides A to H shown in FIG. 5) × the “depth of the groove 12X”.

Note that the groove 12X can be arbitrarily arranged as long as it communicates with the cavity 11A.

For example, as shown in FIGS. 2B and 3, the groove 12 X may be exposed on the side surface 12 B of the ignition end 12. According to such a configuration, the side wall of the groove 12X can be more efficiently burned during the period from the start of combustion to the initial puff, and the ignitability is further improved.

Further, for example, as shown in FIG. 2 (b), the two grooves 12X may be arranged so as to be orthogonal to each other in the ignition end face 10a, or in the ignition end face 10a as shown in FIG. The three grooves 12X may be arranged to intersect at 60 ° C.

Here, by disposing the plurality of grooves 12X so as to divide the ignition end face 10a evenly, heat is uniformly and efficiently transmitted to the entire ignition end face 10a in the period from the start of combustion to the initial puff. be able to.

The grooves 12X may be arranged in a curved shape, or if each groove communicates with the cavity 11A, the plurality of grooves 12X are arranged so as to intersect at a position other than the center of the cavity 11A. It may be.

Further, the groove 12X may be inclined so as to become deeper toward the cavity 11A, for example.

Further, a plurality of protrusions may be provided on the ignition end surface 10a by intersecting the plurality of curved grooves 12X and the linear grooves 12X at various positions in the ignition end surface 10a. In such a case, it should be noted that the ignition end surface 10a includes a virtual surface formed by the tips of a plurality of protrusions and a tip surface of the plurality of protrusions.

Also, by increasing the depth of the groove 12X, the area of the air flow path at the ignition end is increased, and the ignitability can be further improved.

In addition, although the effect is less than that of the groove 12X for improving the ignitability, from the viewpoint of design and the like, it is included in the embodiment that the groove 12X is processed together with the groove that does not communicate with the cavity 11A. Of course.

Furthermore, chipping in the ignition end face 10a can be prevented by chamfering the ignition end face 10a.

Further, the carbon heat source 10 (that is, the cylindrical portion 11 and the ignition end portion 12) may be integrally formed by a method such as extrusion, tableting, or pressure casting as described later.

Furthermore, the length L1 of the carbon heat source 10 in the longitudinal axis direction L may be configured to be 8 mm to 30 mm, preferably 10 mm to 30 mm, and more preferably 10 mm to 15 mm. The carbon heat source 10 having such a configuration can be suitably employed as a heat source for the flavor suction tool.

Further, the outer diameter R2 of the carbon heat source 10 may be configured to be 4 mm to 8 mm, more preferably 5 mm to 7 mm. The carbon heat source 10 having such a configuration can be suitably employed as a heat source for the flavor suction tool.

The outer diameter of the cylindrical portion 11 and the outer diameter of the ignition end portion 12 are configured to be the same as the outer diameter R2 of the carbon heat source 10.

Also, the length of the cylindrical portion 11 in the longitudinal axis direction L can be arbitrarily set within a range that does not hinder the function (ignitability) of the ignition end portion 12. For example, the length of the cylindrical portion 11 in the longitudinal axis direction L may be a length obtained by subtracting the depth of the groove 12X from the total length of the carbon heat source 10 in the longitudinal axis direction L.

Hereinafter, an example of a method for producing the carbon heat source 10 according to the embodiment will be described with reference to FIG.

As shown in FIG. 6, in step S101, primary molding of the carbon heat source 10 is performed.

The carbon heat source 10 at the time of primary molding may have a columnar shape in which the cavity 11A is not provided, or may have a columnar shape in which the cavity 11A extending along the longitudinal axis direction is provided. .

Here, the carbon heat source 10 is formed by integrally forming a mixture containing a plant-derived carbon material, an incombustible additive, a binder (an organic binder or an inorganic binder), water, or the like by a method such as extrusion, tableting, or pressure casting. Obtainable.

As such a carbon material, it is desirable to use a material from which volatile impurities have been removed by heat treatment or the like.

In addition, the carbon heat source 10 can include a carbon material in the range of 10 wt% to 99 wt%. Here, from the viewpoint of combustion characteristics such as supply of a sufficient amount of heat and ash tightening, the carbon heat source 10 preferably contains a carbon material in the range of 30% by weight to 70% by weight, preferably 40% by weight to 50% by weight. More preferably, a range of carbon materials is included.

As the organic binder, for example, a mixture containing at least one of CMC (carboxymethylcellulose), CMC-Na (carboxymethylcellulose sodium), alginate, EVA, PVA, PVAC and sugars can be used.

Further, as the inorganic binder, for example, a mineral type such as purified bentonite, or a silica type binder such as colloidal silica, water glass, calcium silicate, or the like can be used.

For example, from the viewpoint of flavor, the binder described above preferably contains 1 to 10% by weight of CMC or CMC-Na, and more preferably contains 1 to 8% by weight of CMC or CMC-Na. .

Further, as the non-combustible additive, for example, a carbon salt or oxide made of sodium, potassium, calcium, magnesium, silicon, or the like can be used. The carbon heat source 10 can contain 40 wt% to 89 wt% incombustible additive.

Here, it is preferable that calcium carbonate is used as the incombustible additive, and the carbon heat source 10 includes 40 to 55% by weight of the incombustible additive.

The carbon heat source 10 may contain an alkali metal salt such as sodium chloride at a ratio of 1% by weight or less for the purpose of improving combustion characteristics.

In step S102, processing for forming the cylindrical portion 11 is performed. For example, a cylindrical portion 11 having a cavity 11 A is formed by making a hole from one end face (puff side end face) of the primarily formed carbon heat source 10 to a predetermined position with a drill.

In step S103, a process for forming the ignition end 12 is performed. For example, the groove 12X is formed by performing predetermined processing on the surface (ignition end) opposite to the surface (end surface on the puff side) into which the drill is inserted in step S102, using a diamond cutting disk.

Here, good ignitability can be obtained by appropriately adjusting the number, depth, width, and the like of the grooves 12X according to the composition of the carbon heat source 10 (carbon blending ratio, etc.) and the outer diameter R2.

Note that the order of step S102 and step S103 may be reversed. Further, when the cavity 11A is formed in the primary molding, step S102 may be omitted.

(Function and effect)
According to the flavor suction tool 1 and the carbon heat source 10 according to the embodiment, the groove 12X is formed in the ignition end surface 10a, and the cavity 11A extending along the longitudinal axis direction L of the carbon heat source 10 is formed in the cylindrical portion 11. Thereby, the favorable ignitability in the ignition end face 10a and the stable supply of heat in the cylindrical portion 11 can be satisfied at the same time.

Further, in the flavor suction device 1 according to the embodiment, the outer wall 31 of the holding unit 3 includes an exterior member 311 and a heat conduction member 312. Further, at least a part of the heat conducting member 312 is adjacent to the carbon heat source 10. Specifically, a part of the heat conducting member 312 comes into contact with the outer surface (outer peripheral surface) in the short direction D of the carbon heat source 10.

According to the flavor suction tool 1, when the combustion of the carbon heat source 10 proceeds and reaches the contact portion of the heat conducting member 312, the heat generated from the carbon heat source 10 is propagated to the heat conducting member 312. Thereby, the temperature of the carbon heat source 10 falls and combustion is suppressed. That is, according to the flavor inhaler 1, it is possible to reliably extinguish the combustion of the carbon heat source 10 at the end of combustion (at the end of smoking). Furthermore, according to the flavor suction tool 1, it is possible to reliably prevent the spread of the fire in the holding unit 3, and thus to ensure that the fire is extinguished at the end of combustion.

The heat conducting member 312 extends at least from the carbon heat source 10 to the flavor generating source 2. Specifically, the heat conducting member 312 contacts the outer surface (outer peripheral surface) in the short direction D of the carbon heat source 10 and the outer surface (outer peripheral surface) in the short direction D of the flavor generating source 2.

According to the flavor suction tool 1, when the combustion of the carbon heat source 10 reaches the contact portion of the heat conducting member 312, the heat generated from the carbon heat source 10 easily propagates to the flavor generating source 2 via the heat conducting member 312. Therefore, the amount of heat supplied to the flavor generating source 2 increases. Thereby, generation | occurrence | production of the flavor component from the flavor generation source 2 is promoted, and more flavor components can be efficiently supplied with respect to a user.

Further, it is preferable that, for example, aluminum is applied to the heat conducting member 312 as a member having airtightness. In such a case, the heat generated by the carbon heat source 10 can be efficiently transferred to the flavor generating source 2 by the air flow.

Example 1
With reference to FIG. 7, the test performed in order to evaluate the relationship between the shape of the groove | channel 12X in the ignition end surface 10a and ignitability is demonstrated. FIG. 7 is a view of the S cross section shown in FIG. 2B as seen from the T side, as in FIG.

In this test, a plurality of test samples A-1 to E-3 were manufactured as follows. Table 1 shows the width, depth, and number of grooves 12X in each of the test samples A-1 to E-3.

First, after mixing 100 g of activated carbon, 90 g of calcium carbonate, and 10 g of CMC (etherification degree 0.6), 270 g of water containing 1 g of sodium chloride was added and further mixed.

Second, after kneading the mixture, it was extruded so as to have a cylindrical shape with an outer diameter of 6 mm and an inner diameter of 0.7 mm.

Thirdly, the molded product obtained by the extrusion molding was dried and then cut to a length of 13 mm to obtain a primary molded body (carbon heat source 10 at the time of primary molding).

Fourth, a cylindrical portion 11 having a cavity 11A was formed by drilling a hole from one end face (puff side end face) of the primary molded body to a predetermined position with a 2 mm diameter drill.

Fifth, a groove 12X was formed by applying a predetermined process to the surface (ignition end) opposite to the surface (end surface on the puff side) into which the drill was inserted in step S102, using a diamond cutting disk.

Thereafter, each of test samples A-1 to E-3 (carbon heat source 10) was subjected to an ignitability evaluation test by the following method.

First, as shown in FIG. 7, the cylindrical part 11 of each of the test samples A-1 to E-3 (carbon heat source 10) is connected to the holding part 3 formed in a cylindrical shape.

Second, using a commercially available gas lighter 500, each test sample (carbon heat source 10) is brought into contact with the flame of the gas lighter 500, heated for 3 seconds, and then puffed at 55 ml / 2 seconds. Here, this puff was repeated at 15 second intervals.

Table 1 shows the results of the ignitability evaluation test for each of the test samples A-1 to E-3.

Here, as the evaluation test of ignitability, “the combustion state of the ignition end of each test sample after the first puff (whether or not the entire ignition end is combusted)” and “continuation of combustion after the second puff” The possibility of combustion (whether combustion continues uniformly) was confirmed. According to the result of the evaluation test, when the number of the grooves 12X is “2”, the commercially available gas lighter 500 has sufficient ignitability by setting the depth of the grooves 12X to “2 mm or more”. Was confirmed.

In addition, even when the depth of the groove 12X was “1 mm”, the tendency to improve the ignitability was recognized by setting the number of the grooves 12X to “3 or more”.

Further, according to the result of the evaluation test, “the area of the groove wall in the groove 12X relative to the area ratio of the groove wall to the ignition end” (“the area of the ignition end surface 10a (excluding the area of the portion where the groove 12X is formed)”. It can be seen that the greater the soot, the better the ignitability.

The groove depth is the distance from the ignition end face 10a to the bottom of the groove 12X in the longitudinal axis direction L. The groove width is the size of the groove 12X in the direction orthogonal to the extending direction of the groove 12X on the ignition end face 10a.

(Example 2)
In the following, Example 2 will be described. In Example 2, a plurality of samples (sample L-1 to sample M-2) shown in FIG.

Each sample is a carbon heat source composed of activated carbon, calcium carbonate and CMC. If the total weight of the sample is 100% by weight, the sample is composed of 80% by weight activated carbon, 15% by weight calcium carbonate and 5% by weight CMC. The total length of each sample in the longitudinal axis direction L is 15 mm. The number of cavities, the size of the cavities, and the number of cavities included in each sample are as shown in FIG.

Such a sample was inserted into a paper tube, and a commercially available gas lighter flame was brought into contact with the ignition end for 3 seconds, and then 55 ml / 2 seconds was puffed.

As shown in FIG. 8, in comparison with Samples M-1 to M-2 having a plurality of cavities, in Samples L-1 to L-3 having a single cavity, the temperature difference between the puffs and the sustained combustion puff Good results were obtained both in number of times.

That is, it was confirmed that the temperature difference between the puffs was reduced when the single cavity was provided compared to the case where a plurality of cavities were provided, because the “molded body cross-sectional area / flow path circumferential length” was large. . In addition, it was confirmed that the number of puffs increased when “single cavity” was provided because “molded body cross-sectional area / flow path circumferential length” was larger than when a plurality of cavities were provided.

(Modification 1)
Hereinafter, Modification Example 1 of the above-described embodiment will be described. In the following, differences from the above-described embodiment will be described.

9 and 10 are diagrams showing the carbon heat source 10 according to the first modification. FIG. 9 is a view of the carbon heat source 10 as viewed from the side of the end face on the ignition side (hereinafter, the ignition end face 10a). FIG. 10 is a view of the S cross section shown in FIG. 9 as viewed from the T side. The S cross section is a cross section passing through the center of the cavity 11A and passing through the groove 12B. In FIG. 10, it should be noted that for convenience of explanation, the ridgeline that appears on the near side is indicated by a dotted line.

As shown in FIG. 9, a cross-shaped groove 12X passing through the center of the cavity 11A is formed in the ignition end face 10a of the carbon heat source 10.

In the first modification, the ignition end portion 12 has a gap communicating with the cavity 11A in the extending direction of the cavity 11A provided in the cylindrical portion 11. In the first modification, the size of the gap of the ignition end 12 in the cross section orthogonal to the axis AX is the same as the size of the cavity 11A in the cross section orthogonal to the axis AX. It should be noted that the cross-shaped groove 12X is formed separately from the gap of the ignition end 12.

As already described in the above-described embodiment, the ignition end surface 10a may be chamfered. For example, as shown in FIGS. 9 and 10, a chamfering process is applied to the radially outer end U1 of the ignition end face 10a. In the ignition end face 10a, the inner end U2 in the radial direction is chamfered. The non-ignition end provided on the opposite side of the ignition end surface 10a is chamfered at the radially outer end U3. That is, the outer end U1, the inner end U2, and the outer end UE are inclined with respect to the vertical plane with respect to the longitudinal axis direction L. By such chamfering, chipping of the carbon heat source 10 is suppressed.

Here, the diameter φ of the cavity 11A is, for example, 2.5 mm. The groove width of each groove 12X is smaller than the diameter φ of the cavity 11A, for example, 1 mm. The total length of the carbon heat source 10 in the longitudinal axis direction L is, for example, 17 mm. The length of the ignition end 12 in the longitudinal axis direction L is, for example, 2 mm. In the longitudinal axis direction L, the length of the portion to be chamfered in the ignition end portion 12 is, for example, 0.5 mm. That is, in the longitudinal axis direction L, the length of the portion that is not chamfered in the ignition end 12 is 1.5 mm.

Note that in the first modification, the carbon heat source 10 (the cylindrical portion 11 and the ignition end portion 12) is integrally formed. For example, after forming a lump made of a carbon material and having a cavity extending along the longitudinal axis direction by a method such as extrusion, tableting or pressure casting, a groove may be formed by cutting the ignition end face. .

(Modification 2)
Hereinafter, Modification 2 of the above-described embodiment will be described. In the following, differences from the above-described embodiment will be described. FIG. 11 is a view showing a flavor suction device 1 according to the second modification. 11 is a view of the S cross section shown in FIG. 2B as seen from the T side, as in FIG.

In the flavor suction tool 1 according to the modified example 2, the configuration of the heat conducting member is mainly different from the above-described embodiment. Specifically, the flavor suction tool 1 according to the second modification includes a heat conducting member 313 instead of the heat conducting member 312 of the above-described embodiment. The heat conducting member 313 according to the modified example 2 extends from the carbon heat source 10 to the flavor generating source 2 in the longitudinal axis direction L. More specifically, the end portion 313b on the mouth side of the heat conducting member 313 is located on the outer peripheral surface of the flavor generating source 2 in the longitudinal axis direction L, and the end portion 313b on the mouth side of the heat conducting member 313 is In the longitudinal axis direction L, it is located on the outer peripheral surface of the flavor generating source 2.

In the longitudinal axis direction L, the position of the end portion 313a on the ignition end side of the heat conducting member 313 is the same as in the above-described embodiment (see FIG. 1).

According to such a configuration, since the length of the heat conducting member 313 in the longitudinal axis direction L can be shortened, the material cost can be reduced.

In the example of FIG. 11, in the longitudinal axis direction L, the position of the end portion 313a on the ignition end side of the heat conducting member 313 is the same as the position of the end portion on the ignition end side of the exterior member 311 as an example. However, it is not limited to this. For example, the position of the end portion 313 a on the ignition end side of the heat conducting member 313 may be provided closer to the suction side than the end portion on the ignition end side of the exterior member 311.

Further, in the example of FIG. 11, in the longitudinal axis direction L, the position of the end portion 313 b on the mouth side of the heat conducting member 313 is the same as the position of the end portion 2 b on the mouth side of the flavor generating source 2 as an example. Although listed, it is not limited to this. The position of the end portion 313b on the mouth side of the heat conducting member 313 may be any position between the end portion 2a on the ignition end side of the flavor generating source 2 and the end portion 2b on the mouth side.

As described above, the present invention has been described in detail using the above-described embodiments. However, it is obvious for those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

For example, in the embodiment, the carbon heat source 10 has a cylindrical shape, but the embodiment is not limited thereto. The carbon heat source 10 may have a prismatic shape. In the embodiment, in the cross section orthogonal to the longitudinal axis direction L, the cavity 11A has a circular shape, but the embodiment is not limited thereto. In the cross section orthogonal to the longitudinal axis direction L, the cavity 11A may have a rectangular shape or an elliptical shape. In such a case, the diameter R1 of the cavity 11A and the outer diameter R2 of the carbon heat source 10 may be read as the size in the direction orthogonal to the longitudinal axis direction L. In such a case, the size in the direction orthogonal to the longitudinal axis direction L may be the maximum length of a straight line passing through the center of the carbon heat source 10 (cavity 11A) in the cross section orthogonal to the longitudinal axis direction L. It may be a length or an average length.

Moreover, in the above-mentioned embodiment, although the case where the flavor generation source 2 and the filter 4 were separate was mentioned as an example, the flavor generation source (aerosol generation source) which integrated the flavor generation source 2 and the filter 4 was demonstrated. ).

In the above-described embodiment, the case where the outer wall 31 has the two-layer structure of the exterior member 311 and the heat conduction member 312 in the holding unit 3 has been described as an example. However, the present invention is not limited to this, and may have a structure of three or more layers. Furthermore, in the above-described embodiment, a part of the heat conducting member 312 is configured to abut on the outer surface (outer peripheral surface) of the carbon heat source 10 in the short direction D, but is not limited thereto. For example, the outer wall 31 has another sheet-like member between the carbon heat source 10 and the heat conducting member 312, and the other sheet-like member comes into contact with the outer surface (outer peripheral surface) of the carbon heat source 10. It may be a configuration. In other words, various configurations can be applied to the heat conducting member 312 as long as the configuration is adjacent to the outer surface (outer surface) of the carbon heat source 10.

Furthermore, the above-described embodiments and modification examples can be combined.

Thus, it goes without saying that the present invention includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

Note that the entire content of Japanese Patent Application No. 2013-204167 (filed on September 30, 2013) is incorporated herein by reference.

As described above, according to the present invention, the ignitability in the period from the start of combustion to the initial puff is good, and a stable supply of heat during the puff from the middle to the second half is realized. It is possible to provide a carbon heat source and a flavor suction device that can be surely extinguished at the end of combustion.

Claims

A flavor suction device comprising a columnar carbon heat source and a holding part having a cylindrical outer wall for holding the carbon heat source,
The carbon heat source is
A cylindrical portion provided with one cavity extending along the longitudinal direction of the carbon heat source;
An ignition end provided on the ignition side of the carbon heat source rather than the tube portion;
A groove communicating with the cavity is formed on an end surface on the ignition side of the ignition end portion,
The ignition end portion has a gap communicating with the cavity in the extending direction of the cavity provided in the cylindrical portion,
The groove is formed separately from the gap,
In the holding portion, the outer wall includes a heat conducting member,
At least a part of the heat conducting member is adjacent to the carbon heat source.
Inside the holding part, a flavor generation source containing at least one volatile flavor component is provided,
The flavor inhaler according to claim 1, wherein the heat conducting member extends at least from the carbon heat source to the flavor generating source.
The flavor suction tool according to claim 1 or 2, wherein the groove is exposed on a side surface of the ignition end.
The cylindrical portion has a cylindrical shape,
The flavor inhaler according to any one of claims 1 to 3, wherein a difference between a diameter of the cavity and an outer diameter of the carbon heat source is configured to be 1 mm or more.
The flavor suction tool according to any one of claims 1 to 4, wherein the tube portion and the ignition end portion are integrally formed.
In the longitudinal direction of the carbon heat source, the size of the carbon heat source is configured to be 10 mm to 30 mm,
The flavor suction device according to any one of claims 1 to 5, wherein the carbon heat source is configured to have a size of 4 mm to 8 mm in a direction orthogonal to the longitudinal axis direction.
The flavor suction according to any one of claims 1 to 6, wherein the cavity has a size of 1 mm to 4 mm in a direction orthogonal to a longitudinal axis direction of the carbon heat source. Ingredients.