Heating devices and heating systems

Abstract

To provide a heating device and heating system having a novel structure. [Solution] A heating device is provided that can heat a smokeable substance contained in a consumable. The heating device includes an air inlet 30a, a housing, a heating element for heating the smokeable substance from the inside, a chamber located within the housing and having a side wall surrounding the side of the smokeable substance, a first gap S1 between the inner circumferential surface of the side wall of the chamber and the side of the consumable contained in the chamber, and a second gap S2 between the housing and the outer circumferential surface of the side wall of the chamber. The thickness of the first gap S1 is greater than the thickness of the second gap S2.

Description

[Technical Field]

[0001] The present invention relates to a heating device and a heating system. [Background Art]

[0002] Conventionally, flavor inhalers for inhaling flavor and the like without burning a material are known. As such a flavor inhaler, for example, an electrically heated aerosol generating system including a cavity for accommodating a smoking article in a housing is known (Patent Document 1). In this electrically heated aerosol generating system, an internal air flow channel is provided between the housing and the cavity, and it is said that air can be preheated by passing through the internal air flow channel and being supplied to the smoking article. Patent Document 1 also describes that the housing is cooled by providing the internal air flow channel. [Prior Art Documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent No. 5963375 [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] One object of the present invention is to provide a heating device and a heating system having a novel structure. [Means for Solving the Problem]

[0005] According to a first aspect of the present invention, a heating device is provided that can heat a smokeable substance contained in a consumable. The heating device includes an air inlet, a housing, a heating element for heating the smokeable substance from the inside, a chamber located within the housing and having a side wall surrounding the side surface of the smokeable substance, a first void at least partially partitioned by the inner circumferential surface of the side wall of the chamber and the side surface of the consumable contained in the chamber, and a second void between the housing and the outer circumferential surface of the side wall of the chamber. The thickness of the first void is greater than the thickness of the second void.

[0006] According to the first embodiment described above, since there are multiple voids and the thickness of the first void, which is the void closest to the heating element, is relatively large, it is possible to restrict or reduce the convection of air within the voids compared to the case where there is only one void, and at least one of the following can be achieved: The transfer of heat from the heating element and the heated smokeable substance to the chamber and housing through the first void can be suppressed or reduced, thereby reducing the temperature rise of the housing surface and reducing the removal of heat from the smokeable substance by the chamber. In particular, since the removal of heat from the outer periphery of the smokeable substance can be reduced, aerosols can be generated more sufficiently from the smokeable substance even in the latter half of the smoking operation. Furthermore, by suppressing or reducing the transfer of heat to the chamber, the transfer of heat to the inside of the heating device through the chamber can also be reduced. It should be noted that reducing the transfer of heat to the inside of the heating device is preferable from the viewpoint of device protection.

[0007] In this specification, “first void” means a gap that is at least partially partitioned by the inner surface of the side wall of the chamber, located at a position corresponding to the length of the smokeable substance in the chamber in the insertion direction of the smokeable substance, and the side surface of the consumable substance housed in the chamber, when the consumable is positioned at a desired location within the chamber. The thickness of the first void means “the distance in the first void in the direction radiating from the axis that passes through the center of the chamber and extends in the longitudinal direction of the heating device (the insertion direction of the consumable). Alternatively, the thickness of the first void may be considered as “the longest distance in the first void in the direction radiating from the axis that passes through the center of the chamber and extends in the longitudinal direction of the heating device,” or as “the shortest distance in the first void in the direction radiating from the axis that passes through the center of the chamber and extends in the longitudinal direction of the heating device.” Similarly, the "second void" refers to the gap between the housing and the outer surface of the chamber's side wall, located at a position corresponding to the length of the smokeable substance in the chamber in the insertion direction of the smokeable substance, when the consumables are positioned in the desired location within the chamber. The thickness of the second void refers to "the distance in the second void in the direction radiating from the axis that passes through the center of the chamber and extends longitudinally from the heating device." Alternatively, the thickness of the second void can be considered as either "the longest distance in the second void in the direction radiating from the axis that passes through the center of the chamber and extends longitudinally from the heating device," or "the shortest distance in the second void in the direction radiating from the axis that passes through the center of the chamber and extends longitudinally from the heating device." In other words, the "first void" and the "second void" are voids located radially outside the smokeable substance contained in the chamber in the insertion direction of the smokeable substance.Furthermore, in this specification, "the consumable is positioned at a desired location within the chamber" means the consumable is correctly positioned at the intended location within the chamber in order to generate an aerosol from the consumable (for example, if the chamber has a "bottom wall against which the inserted consumable is abutted", the consumable is abutted against at least a portion of the bottom, or if the heating device has a "butt section against which the inserted consumable is abutted" inside or outside the chamber, the consumable is abutted against at least a portion of the butt section).

[0008] The heating element has a shape that allows it to be inserted into a smokeable substance such as a pin or blade. The heating element may have a support part such as a substrate or core that has heat resistance to heating and rigidity sufficient to allow insertion into the smokeable substance, such as ceramic or heat-resistant resin, and a heat-generating part such as a resistance-heating heating track formed on the surface or inside the support part. However, the heating element may also be a susceptor that is inductively heated by an induction coil. In this specification, the term "susceptor" means a material that can convert electromagnetic energy into heat, and means a material intended to heat the "smokeable substance". The susceptor is positioned so as to transfer heat to the "smokeable substance". When the susceptor is located in a fluctuating electromagnetic field, eddy currents induced within the susceptor and magnetic hysteresis losses within the susceptor cause the susceptor to heat up. The heating element can also be described as the part that comes into contact with the smokeable substance when the consumable is positioned in the desired location within the chamber.

[0009] The susceptor preferably contains a material selected from at least one of the group consisting of aluminum, iron, nickel, and alloys thereof (e.g., nichrome and stainless steel). The shape of the susceptor is arbitrary and may be, for example, granular, rod-shaped, strip-shaped, tubular, or cylindrical. If the shape of the susceptor is tubular with an annular electrical channel, eddy currents can be generated efficiently. Multiple susceptors of the same shape may be arranged in the compartment, or susceptors of different shapes may be arranged.

[0010] When a susceptor is used as a heating element, the housing and / or chamber are preferably permeable and non-conductive (electrically insulating). This makes it less likely for the housing and / or chamber to generate heat due to the induction coil, allowing the susceptor to heat up efficiently. Examples of materials that are permeable and non-conductive (electrically insulating) include glass, plants, wood, paper, and resins such as PEEK.

[0011] The induction coil may be, for example, a flat coil or a cylindrical coil. The induction coil may be positioned on the opposite side of the consumable or surrounding the chamber via the bottom wall of the chamber, with the consumable positioned in the desired location within the chamber.

[0012] The heating device has an air passage from an air inlet to the interior of the chamber, and the air passage may include a first air passage passing through a second void and a first void. This allows air to reach the first void through the second void, so that air can be supplied to the smokeable material from the first void. In this case, for example, by forming a hole or notch in the member forming the side of the consumable (e.g., the rolling paper), or by making the member forming the side of the consumable a gas-permeable material, the air supplied to the first void when the user inhales the consumable can be taken into the interior of the consumable from the side of the consumable. The chamber may also have a bottom against which the consumable inserted into the chamber abuts. The bottom may have a recess or protrusion for supporting a portion of the consumable positioned at a desired location in the chamber such that at least a portion of the end face of the consumable is exposed to the interior of the chamber. In this case, the air supplied to the first void through the second void when the user inhales the consumable can be taken into the interior of the consumable from the end face. Furthermore, since the thickness of the first void is greater than the thickness of the second void, the airflow velocity reaching the first void becomes relatively low, which can suppress or reduce the cooling of the chamber by air convection. This reduces the amount of heat removed from the outer periphery of the smokeable material.

[0013] In a heating device, the first void and the second void may be configured so that they do not communicate with each other when the consumables are positioned in a desired location within the chamber. This can obstruct air convection between the first void and the second void, thereby further improving the thermal insulation performance between the first void and the second void.

[0014] The chamber may have a bottom wall with an opening. The air passage may include a second air passage leading to the opening in the bottom wall of the chamber. When this includes a first air passage passing through the second and first gaps, in addition to supplying air to the smokeable material from the first gap, air can also be supplied to the end of the smokeable material from the opening in the bottom wall of the chamber, making it easy to adjust the air flow rate ratio between the first and second air passages. That is, for example, the ratio of the amount of air taken into the consumable from the side of the smokeable material to the amount of air taken in from the end face of the smokeable material can be easily adjusted. This improves the degree of freedom in supplying air to the consumable.

[0015] The housing has an insertion end into which consumables are inserted, and the heating device includes a branching passage that branches from an air inlet into a first air passage and a second air passage, and the insertion end, bottom wall, branching passage, and air inlet may be located in that order in the direction of consumable insertion. This makes it easy to make the length of the second air passage shorter than that of the first air passage, so that the proportion of air supplied from the second air passage to the end of the smokeable material can be easily increased. As a result, air can be efficiently supplied to the smokeable material while suppressing or reducing the cooling of the chamber by air convection in the first gap.

[0016] When a user inhales a consumable, the amount of air supplied to the inhalable substance from the second air passage may be greater than the amount of air supplied to the inhalable substance from the first air passage. This allows for efficient aerosol release from the inhalable substance while suppressing or reducing the cooling of the chamber due to air convection in the first air passage.

[0017] The heating device may have a positioning portion that positions the consumable of the smokeable substance in the insertion direction of the consumable so that when the smokeable substance is heated, a portion of the heating device does not come into contact with the side of the consumable that corresponds to the smokeable substance. This can suppress or reduce the heat from the heated smokeable substance being dissipated through a portion of the heating device.

[0018] The heating device may have a guide portion that contacts the consumable and guides the smokeable substance to the heating element. Part of the heating device may be the guide portion. This can suppress or reduce heat dissipation from the heated smokeable substance through the guide portion when the positioning portion positions the smokeable substance in the insertion direction of the consumable so that the guide portion does not come into contact with the side of the consumable corresponding to the smokeable substance.

[0019] The volume of the first void is preferably larger than the volume of the second void. The chamber may have a contact portion that contacts the housing. The contact portion is preferably positioned so as not to overlap with the heating element in the direction of insertion of the consumables. This ensures that the heating element is positioned away from the contact portion of the chamber, thereby suppressing or reducing the transfer of heat from the heating element to the housing or the inside of the device via the contact portion. As a result, the smokeable material can be heated efficiently, and the temperature rise inside the housing or device can be suppressed or reduced. In the direction of insertion of the consumables, one end of the side wall of the chamber is preferably located on the housing insertion end side of the heating element. This ensures that the first void and the second void are separated by the side wall of the chamber, thereby suppressing or reducing air convection between the first void and the second void, and thus suppressing or reducing the transfer of heat from the first void to the second void.

[0020] The bottom wall of the chamber may be configured to be movable relative to the housing along the insertion direction of the consumable. This allows for easy removal of the smuggling material, such as tobacco scraps, from the heating element by moving the chamber away from the heating element (i.e., towards the insertion end of the housing) with the smuggling material still inside the chamber after use, thereby preventing or reducing spillage of the smuggling material. Alternatively, the consumable can be easily removed from the housing after use.

[0021] The heating device may have an operating part, such as a lever, connected to the chamber and partially exposed to the outside of the housing. This allows the user to move the bottom wall of the chamber relative to the housing in the direction of insertion of the consumable by operating the operating part. Preferably, the operating part is connected to a contact part of the chamber. This suppresses or reduces the transfer of heat from the heating element to the contact part when the contact part is located relatively far from the heating element. Therefore, by connecting the operating part to the contact part, heat from the heating element is less likely to be transferred to the operating part, allowing the user to operate the operating part more safely.

[0022] The smokeable substance may be rolled in a first breathable rolling paper. The first rolling paper may be provided with a lid that is breathable and prevents the smokeable substance from falling out. The lid may be glued to the first rolling paper or fixed to the first rolling paper by friction. The lid may be, for example, a paper filter or an acetate filter. The consumables may have a cylindrical member. The cylindrical member may be a paper tube or a hollow filter.

[0023] A hollow filter may consist of a packed bed having one or more hollow channels and a plug wrapper covering the packed bed. Due to the high density of fibers packed in the packed bed, when inhaled, air or aerosols flow only through the hollow channels, and hardly any flow occurs within the packed bed itself. The hollow filter may have a mouthpiece made up of adjacent filter sections, etc.

[0024] The longitudinal length of the smokable substance is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, and even more preferably 50 mm to 60 mm. The circumference of the smokable substance is preferably 15 mm to 25 mm, more preferably 17 mm to 24 mm, and even more preferably 20 mm to 23 mm. Alternatively, the smokable substance may have a length of 12 mm to 22 mm, the first wrapping paper may have a length of 12 mm to 22 mm, the hollow filter may have a length of 7 mm to 26 mm, and the filter portion may have a length of 6 mm to 20 mm.

[0025] The smokable substance contained in the consumable may contain an aerosol source that generates aerosol when heated at a predetermined temperature. The type of aerosol source is not particularly limited, and extract substances from various natural products and / or components thereof can be selected depending on the application. Examples of aerosol sources include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. The content of the aerosol source in the solid smokable substance (percent by weight relative to the total weight of the smokable substance) is not particularly limited, but is usually 5% by weight or more, preferably 10% by weight or more, from the viewpoints of sufficiently generating aerosol and imparting good flavor and taste, and is usually 50% by weight or less, preferably 20% by weight or less.

[0026] As the smoky substance, tobacco such as laminas and bones, or other known plants may be used. The shape of the smoky substance, such as tobacco, may be shredded, sheet-like, string-like, powder-like, granular, pellet-like, slurry-like, or porous. The range of the content of the smoky substance, such as tobacco, in the consumables is, for example, 200 mg to 400 mg, and preferably 250 mg to 320 mg, when the size of the smoky substance is 20 mm to 23 mm in circumference and 18 mm to 22 mm in length. The moisture content (weight %) of the smoky substance containing tobacco, etc., is, for example, 8% to 18% by weight, and preferably 10% to 16% by weight. Such a moisture content suppresses or reduces the occurrence of rolling stains and improves the suitability for rolling during manufacturing. There are no particular restrictions on the size of the tobacco shreds used as an example of the smoky substance or the method of preparation thereof. For example, dried tobacco leaves shredded to a width of 0.8 mm to 1.2 mm may be used. Alternatively, dried tobacco leaves may be crushed to an average particle size of approximately 20 μm to 200 μm, homogenized, processed into sheets, and then cut into strips 0.8 mm to 1.2 mm wide. Furthermore, the above-mentioned sheet-processed material may be gathered rather than cut and used as the inhalable substance. In addition, the inhalable substance may be liquid, and the liquid may have viscosity. In this case, the inhalable substance may consist mostly of an aerosol source. The content of the aerosol source in the liquid inhalable substance (weight %) relative to the total weight of the inhalable substance can be 80% or more by weight, 90% or more by weight, or 95% or more by weight. The inhalable substance may also contain one or more flavorings. The type of flavoring is not particularly limited, but menthol is preferred from the viewpoint of providing a good smoking taste.

[0027] The consumable product may comprise a cylindrical member, a hollow filter section, and a second wrapping paper different from the first wrapping paper, which wraps at least one part of the filter section. The second wrapping paper may wrap a part of the first wrapping paper that wraps the smokable substance. The first wrapping paper and the second wrapping paper of the consumable product can be made from base paper having a basis weight of, for example, 20 gsm to 65 gsm. The thicknesses of the first wrapping paper and the second wrapping paper are not particularly limited, but are preferably 10 µm to 100 µm from the viewpoints of rigidity, air permeability, and ease of adjustment during papermaking.

[0028] The first wrapping paper and the second wrapping paper of the consumable product may contain a filler. The content of the filler can be 10% by weight to 60% by weight relative to the total weight of the first wrapping paper and the second wrapping paper, and is preferably 15% by weight to 45% by weight. Relative to the preferred basis weight range (25 gsm to 45 gsm), the filler content is preferably 15% by weight to 45% by weight. As the filler, for example, calcium carbonate, titanium dioxide, kaolin and the like can be used. Paper containing such a filler exhibits a preferable bright white color from the viewpoint of appearance when used as wrapping paper for consumable products, and can permanently maintain whiteness. By containing a large amount of such a filler, for example, the ISO whiteness of the wrapping paper can be made 83% or higher. Further, from the practical viewpoint of use as wrapping paper for consumable products, the first wrapping paper and the second wrapping paper preferably have a tensile strength of 8 N / 15 mm or more. This tensile strength can be increased by reducing the filler content. Specifically, the tensile strength can be increased by making the filler content lower than the upper limit of the filler content shown in each of the basis weight ranges exemplified above.

[0029] Note that features of other embodiments may be combined or applied to the first embodiment as long as the operation and effect of the first embodiment are not impaired.

[0030] A heating system is provided according to a second aspect of the present invention. The heating system comprises a heating device and a consumable comprising a smokeable substance to be heated by the heating device. The consumable can be positioned at a desired location within the heating device. Here, the “desired location within the heating device” where the consumable is positioned means a location where heating suitable for generating an aerosol from the smokeable substance can be performed.

[0031] In addition, in the second embodiment, features of other embodiments can be combined or applied as long as they do not hinder the operation and effect of the second embodiment.

[0032] According to a third embodiment, a heating system is provided, comprising a heating device capable of heating a smokeable substance contained in a consumable, and a consumable comprising the smokeable substance heated by the heating device. The heating system comprises an air inlet, a housing, a heating element for heating the smokeable substance from the inside, a chamber located within the housing and having a side wall surrounding the side of the smokeable substance, a first void between which at least a portion is partitioned by the inner circumferential surface of the side wall of the chamber and the side of the consumable housed in the chamber, and a second void between the housing and the outer circumferential surface of the side wall of the chamber. The thickness of the first void is greater than the thickness of the second void.

[0033] According to the third embodiment, since there are multiple voids and the thickness of the first void, which is the void closest to the heating element, is relatively large, the convection of air within the void can be restricted or reduced compared to the case where there is only one void. This makes it possible to achieve at least one of the following: The transfer of heat from the heating element and the heated smokeable substance to the chamber and housing through the first void can be suppressed or reduced, thereby reducing the temperature rise of the housing surface and reducing the removal of heat from the smokeable substance by the chamber. In particular, since the removal of heat from the outer periphery of the smokeable substance can be reduced, aerosols can be generated more sufficiently from the smokeable substance even in the latter half of the smoking operation. Furthermore, by suppressing or reducing the transfer of heat to the chamber, the transfer of heat to the inside of the heating device through the chamber can also be reduced. Note that reducing the transfer of heat to the inside of the heating device is preferable from the viewpoint of device protection. Also, according to the second embodiment, the heating element may be provided on the heating device or on a consumable. When the heating element is provided on a consumable, the consumable may be provided with a susceptor that heats the smokeable substance from the inside.

[0034] In addition, in the third embodiment, features of other embodiments can be combined or applied as long as they do not hinder the action and effect of the third embodiment.

[0035] According to a fourth embodiment, a heating device is provided that can heat a smokeable substance contained in a consumable. The heating device includes a housing, a heating element for heating the smokeable substance from the inside, a chamber located within the housing and having a side wall surrounding the side of the smokeable substance, and a first void between the inner circumferential surface of the side wall of the chamber and the smokeable substance contained in the chamber, at least partially partitioned by these two voids. The thickness of the first void is 1.5 mm or more and 3.0 mm or less. Preferably, the thickness of the first void is 1.5 mm or more and 2.0 mm or less.

[0036] According to the fourth embodiment, by having a first void thickness of 1.5 mm or more and 3.0 mm or less, the removal of heat from the smokeable substance by the chamber during smoking in the heating device can be effectively suppressed or reduced. Specifically, the outermost layer of the smokeable substance can be heated to a temperature exceeding the evaporation temperature of aerosol sources such as glycerin and propylene glycol contained in the smokeable substance (e.g., approximately 250°C). As a result, aerosols can be effectively generated from almost the entire smokeable substance, and the amount of aerosol generated can be increased, especially in the latter half of the smoking operation. If the thickness of the first void is less than 1.5 mm, the temperature of the outermost layer of the smokeable substance will fall significantly below the evaporation temperature of the aerosol sources (e.g., approximately 250°C), and there is a risk that aerosols will not be properly generated. Also, if the thickness of the first void exceeds 3.0 mm, although the outermost layer of the smokeable substance can be sufficiently heated, the size of the heating device (housing) becomes unnecessarily large. If the thickness of the first void exceeds 2.0 mm, increasing the thickness will reduce the effect of the chamber on reducing heat absorption from the smokeable material. Therefore, considering the size of the heating device, the thickness of the first void is preferably 1.5 mm or more and 2.0 mm or less. In this specification, "the latter half of the smoking operation" refers to the latter half of the smoking operation performed on a single consumable.

[0037] In addition, in the fourth embodiment, features of other embodiments can be combined or applied as long as they do not hinder the operation and effect of the fourth embodiment.

[0038] According to the fifth embodiment, a heating device is provided that can heat a smokeable substance contained in a consumable. The heating device includes a housing, a heating element for heating the smokeable substance from the inside, a chamber located within the housing and having a side wall surrounding the side of the smokeable substance, and a guide portion having an inner surface that contacts the consumable and guides the smokeable substance to the heating element. The distance between the inner surface of the side wall of the chamber and the inner surface of the guide portion in a direction perpendicular to the insertion direction of the consumable is 1.5 mm or more and 3.0 mm or less. Preferably, the distance between the inner surface of the side wall of the chamber and the inner surface of the guide portion in a direction perpendicular to the insertion direction of the consumable is 1.5 mm or more and 2.0 mm or less.

[0039] According to the fifth embodiment, the distance between the inner surface of the chamber side wall and the inner surface of the guide portion in a direction perpendicular to the insertion direction of the consumable is 1.5 mm or more and 3.0 mm or less. That is, since the inner surface of the guide portion is in contact with the consumable, the distance between the inner surface of the chamber side wall and the inner surface of the guide portion substantially corresponds to the distance between the outer surface of the consumable and the inner surface of the chamber side wall. Therefore, according to the fifth embodiment, when the consumable is positioned at a desired location in the chamber, the thickness of the gap between the outer surface of the smokeable substance and the inner surface of the chamber side wall is approximately 1.5 mm or more and 3.0 mm or less. This effectively suppresses or reduces the removal of heat from the smokeable substance by the chamber during smoking in the heating device. Specifically, the outermost layer of the smokeable substance can be heated above the temperature at which aerosol sources such as glycerin and propylene glycol contained in the smokeable substance evaporate (e.g., approximately 250°C). As a result, aerosols can be effectively generated from almost the entire smokeable substance, and the amount of aerosol generated can be increased, especially in the latter half of the smoking operation. If the thickness of the gap is less than 1.5 mm, the temperature of the outermost layer of the smokeable material will fall significantly below the temperature at which the aerosol source evaporates (e.g., approximately 250°C), and there is a risk that the aerosol will not be properly generated. If the thickness of the gap is greater than 3.0 mm, although the outermost layer of the smokeable material can be sufficiently heated, the size of the heating device (housing) becomes unnecessarily large. If the thickness of the gap exceeds 2.0 mm, increasing the thickness will reduce the effect of the chamber on reducing heat loss from the smokeable material. For this reason, considering the size of the heating device, the distance between the inner surface of the side wall of the chamber and the inner surface of the guide section in a direction perpendicular to the insertion direction of the consumable, i.e., the thickness of the gap, is preferably between 1.5 mm and 2.0 mm.

[0040] In addition, in the fifth embodiment, features of other embodiments can be combined or applied as long as they do not hinder the action and effect of the fifth embodiment. [Brief explanation of the drawing]

[0041] [Figure 1] This is a schematic side cross-section of the heating system according to this embodiment. [Figure 2] Figure 1 is a schematic enlarged view of the heating unit shown. [Figure 3] This graph shows the temperature of the outermost layer of a substance that can be smoked. [Figure 4] This is an enlarged schematic diagram of the heating unit of a heating device according to another embodiment. [Figure 5] This is an enlarged schematic diagram of the heating unit of a heating device according to another embodiment. [Modes for carrying out the invention]

[0042] Embodiments of the present invention will be described below with reference to the drawings. In the drawings described below, the same or corresponding components are denoted by the same reference numerals, and redundant descriptions are omitted.

[0043] Figure 1 is a schematic side cross-section of the heating system according to this embodiment. The heating system 100 according to this embodiment includes consumables 10 and a heating device 20. The heating device 20 is preferably a portable device or a handheld device. As shown in Figure 1, the consumables 10 include a smokeable substance 16 that is heated by the heating device 20, a hollow filter 14, and a filter section 12. The heating device 20 includes a battery 22, a PCB (Printed Circuit Board) 24, a housing 30, and a heating unit 40.

[0044] The heating device 20 is configured to heat a solid smokeable substance 16 to atomize it. The smokeable substance 16 constitutes, for example, a part of a columnar consumable 10 that extends along its longitudinal direction. The consumable 10 may be, for example, a tobacco stick containing tobacco in the smokeable substance 16. The battery 22 stores the power used by the heating device 20. For example, the battery 22 is a lithium-ion battery. The battery 22 may be rechargeable by an external power source.

[0045] PCB24 consists of a CPU and memory, and controls the operation of the heating device 20. For example, PCB24 starts heating the smokeable substance 16 in response to user operation on an input device such as a push button or slide switch (not shown), and stops heating the smokeable substance 16 after a certain period of time has elapsed. PCB24 may also stop heating the smokeable substance 16 even before a certain period of time has elapsed since the start of heating if the number of puffs performed by the user exceeds a certain value. For example, the puffing action is detected by a sensor (not shown).

[0046] Alternatively, the PCB 24 may start heating the smokeable substance 16 in response to the start of the puffing operation and stop heating the smokeable substance 16 in response to the end of the puffing operation. The PCB 24 may also stop heating the smokeable substance 16 even before the end of the puffing operation if a certain amount of time has elapsed since the start of the puffing operation. In this embodiment, the PCB 24 is located between the battery 22 and the heating unit 40.

[0047] In the illustrated example, the heating device 20 is configured to receive a stick-shaped consumable 10. Also, as shown in the illustration, the battery 22, PCB 24, and heating unit 40 may be arranged in a direction that allows the consumable 10 to be inserted into the heating device 20. The housing 30 is a casing that houses the battery 22, PCB 24, and heating unit 40. The housing 30 has an air inlet 30a for supplying air to the heating unit 40 and an insertion end 32 into which an opening 34 is formed into which the consumable 10 is inserted.

[0048] The heating unit 40 includes a heating section 42 and a chamber 50. The heating section 42 has a shape that can be inserted into the smokeable substance 16 and is configured to heat the smokeable substance 16 from the inside. Specifically, the heating section 42 has a blade section 42a (corresponding to an example of a heating element) that is inserted into the smokeable substance 16 and a holder section 42b for fixing the heating section 42 to the housing 30. The blade section 42a (heating element) is the part that comes into contact with the smokeable substance 16 when the consumable 10 is positioned in a desired location within the chamber 50. The blade section 42a may have, for example, a resin substrate and a heating track formed on its surface. Lead wires 43 are connected to the blade section 42a to supply power from the battery 22 to the blade section 42a. The heating section 42 may also have a susceptor (corresponding to an example of a heating element) that is inductively heated by an induction coil. In this case, the susceptor is inserted into the smokeable substance 16 and heated by induction heating via an induction coil (not shown), thereby heating the smokeable substance 16.

[0049] Next, the chamber 50 of the heating unit 40 will be described in detail. Figure 2 is an enlarged schematic view of the heating unit 40 shown in Figure 1. As shown in Figure 2, the chamber 50 has side walls 52 surrounding the smokeable material 16 and a bottom wall 54 against which the ends of the smokeable material 16 abut. The bottom wall 54 has an opening 54a for supplying air to the ends of the smokeable material 16.

[0050] The heating device 20 is provided with a first void S1 between the inner surface of the side wall 52 of the chamber 50 and the smokeable substance 16 of the consumable 10 housed in the chamber 50. By providing the first void S1, an air insulating layer is formed around the smokeable substance 16, which suppresses or reduces the transfer of heat generated from the blade portion 42a of the heating unit 42 to the chamber 50 and housing 30 through the first void S1. This reduces the temperature rise on the surface of the housing 30 and reduces the amount of heat removed from the smokeable substance 16 by the chamber 50. In particular, since the removal of heat from the outer periphery of the smokeable substance 16 is reduced, aerosols can be generated more sufficiently from the smokeable substance 16 even in the latter half of the smoking operation.

[0051] Furthermore, the heating device 20 is provided with a second void S2 between the housing 30 and the outer circumferential surface of the side wall 52 of the chamber 50. In this embodiment, the thickness A of the first void S1 is greater than the thickness B of the second void S2. Preferably, the volume of the first void S1 may be greater than the volume of the second void S2. The heating device 20 has a first void S1 and a second void S2, and since the thickness A of the first void S1, which is the void closest to the blade portion 42a, is relatively large, the convection of air within the void can be restricted or reduced compared to the case where there is only one void. As a result, the transfer of heat from the blade portion 42a and the heated smokeable substance 16 to the chamber 50 and housing 30 through the first void S1 can be suppressed or reduced, thereby reducing the temperature rise of the housing 30 surface and reducing the removal of heat from the smokeable substance 16 by the chamber 50. In particular, since heat is reduced from the outer periphery of the smokeable substance 16, aerosols can be generated more sufficiently from the smokeable substance 16 even in the latter half of the smoking operation. Furthermore, by suppressing or reducing heat transfer to the chamber 50, heat transfer to the inside of the heating device 20 via the chamber 50 can also be reduced. In the illustrated example, the first void S1 and the second void S2 are connected by a third void S3 that wraps around the end of the side wall 52 of the chamber 50.

[0052] The heating device 20 has an air passage for supplying air from the air inlet 30a of the housing 30 into the chamber 50. Specifically, the heating device 20 has a first air passage F1 that passes through a second void S2 and a first void S1. As a result, air reaches the first void S1 via the second void S2, so that air can be supplied to the smokeable substance 16 from the first void S1. In this embodiment, for example, a hole or notch can be formed in the member forming the side of the consumable 10 (e.g., the rolling paper), or the member forming the side of the consumable 10 can be made of a gas-permeable material. As a result, when the user inhales the consumable 10, the air supplied to the first void S1 through the first air passage F1 can be taken into the consumable 10 from the side. Also in this embodiment, the bottom wall 54 of the chamber 50 may have a recess or protrusion for supporting a part of the consumable 10 so that at least a part of the end face of the consumable 10 is exposed into the chamber 50. In this case, when the user inhales the consumable 10, the air supplied to the first void S1 can be drawn into the consumable 10 from its end face. Also, since the thickness A of the first void S1 is greater than the thickness B of the second void S2, the flow velocity of the air reaching the first void S1 is relatively low, which can suppress or reduce the cooling of the chamber 50 by air convection. This reduces the removal of heat from the outer periphery of the smokeable substance 16. In the illustrated example, the first air passage F1 passes through the second void S2, the third void S3, and the first void S1.

[0053] The heating device 20 further includes a second air passage F2 leading to an opening 54a in the bottom wall 54 of the chamber 50, and a branching passage F3 that branches from the air inlet 30a into a first air passage F1 and a second air passage F2. This allows for the supply of air from the first void S1 to the smokeable substance 16, as well as the supply of air from the opening 54a in the bottom wall 54 of the chamber 50 to the end of the smokeable substance 16, making it easy to adjust the air flow rate ratio between the first air passage F1 and the second air passage F2. That is, for example, the ratio of the amount of air taken into the consumable 10 from the side of the smokeable substance 16 to the amount of air taken in from the end face of the smokeable substance 16 can be easily adjusted. This improves the degree of freedom in supplying air to the consumable 10. Note that, as described above, if the air supplied to the first void S1 can be taken into the interior of the consumable 10 from the first air passage F1, the bottom wall 54 of the chamber 50 does not need to have an opening 54a.

[0054] As shown in the figure, in this embodiment, the branch passage F3 is located in the order of insertion end 32, bottom wall 54, branch passage F3, and air inlet 30a in the insertion direction of the consumable 10. This makes it easy to make the length of the second air passage F2 shorter than that of the first air passage F1, and thus it is easy to increase the proportion of air supplied from the second air passage F2 to the end of the smokeable substance 16. Therefore, in this embodiment, since the second air passage F2 has a shorter flow length and a larger flow cross-sectional area than the first air passage F1, the amount of air supplied from the second air passage F2 to the smokeable substance 16 is greater than the amount of air supplied from the first air passage F1 to the smokeable substance 16. This makes it possible to efficiently supply air to the smokeable substance 16 while suppressing or reducing the cooling of the chamber 50 by air convection in the second air passage F2.

[0055] As shown in Figure 2, the chamber 50 has a contact portion 56 that contacts the housing 30 on the battery 22 side in the insertion direction of the consumable 10. In this embodiment, the contact portion 56 is fixed to the housing 30, and therefore the chamber 50 is fixed to the housing 30. The contact portion 56 may be, for example, a cylindrical or rod-shaped member extending from the side wall 52 or bottom wall 54 of the chamber 50. As shown in the figure, the contact portion 56 is positioned so as not to overlap with the blade portion 42a of the heating portion 42 in the insertion direction of the consumable 10. Specifically, the contact portion 56 is positioned on the battery 22 side (opposite the insertion end 32 of the housing 30) of the blade portion 42a of the heating portion 42 in the insertion direction of the consumable 10. As a result, the blade portion 42a is positioned away from the contact portion 56 of the chamber 50, so that the transfer of heat from the blade portion 42a to the housing 30 via the contact portion 56 is suppressed or reduced. As a result, the smokeable substance 16 can be heated efficiently, and the temperature rise of the housing 30 can be suppressed or reduced.

[0056] As shown in the figure, it is preferable that one end of the side wall 52 of the chamber 50 (the end on the insertion end 32 side) is located on the insertion end 32 side of the housing 30 rather than the blade portion 42a of the heating portion 42 in the insertion direction of the consumable 10. As a result, the first void S1 and the second void S2 are partitioned by the side wall 52 of the chamber 50, so that air convection between the first void S1 and the second void S2 is suppressed or reduced, and the transfer of heat from the first void S1 to the second void S2 can be suppressed or reduced.

[0057] The housing 30 has a guide portion 36, which defines an opening 34 into which the consumable 10 is inserted. The guide portion 36 is a cylindrical member whose edge forming the opening 34 extends toward the battery 22. The guide portion 36 has an inner surface 36a that contacts the outer surface of the consumable 10 inserted into the heating device 20 through the opening 34 to guide the smokeable substance 16 to the heating portion 42. In the state shown in Figure 2, i.e., when the smokeable substance 16 is heated by the heating device 20, the smokeable substance 16 is positioned by the bottom wall 54 (corresponding to an example of a positioning portion) such that the guide portion 36 does not contact the side surface of the consumable 10 corresponding to the position of the smokeable substance 16 in the insertion direction of the consumable 10. In other words, the length of the guide portion 36 is designed so that the guide portion 36 does not come into contact with the smokeable substance 16 when the smokeable substance 16 is heated by the heating device 20. This can suppress or reduce the dissipation of heat from the heated smokeable substance 16 through the guide portion 36.

[0058] <Example of experiment> Next, we will explain the appropriate value for the thickness A of the first void S1 in the heating device 20 described in Figures 1 and 2. In this experimental example, the temperature of the outermost layer of the smokeable substance 16 was measured when the thickness A of the first void S1 in the heating device 20 shown in Figures 1 and 2 was set to 1.0 mm, 1.5 mm, and 2.0 mm, respectively. The blade portion 42a of the heating unit 42 is heated up to 350°C after the start of heating, and then controlled to remain constant at 350°C. The state in which a user uses the heating device 20 was simulated by performing a predetermined amount of suction every 30 seconds after the blade portion 42a of the heating unit 42 started heating. The diameter of the consumable item 10, which is an example of the smokeable substance 16 and consists of a tobacco sheet wrapped in paper, is 7.0 mm, and the blade portion 42a has a pin-like shape with a length of 12.0 mm and a diameter of 2.5 mm. That is, in this experimental example, the blade portion 42a constitutes a pin heater. The pin heater has conductive tracks within the ceramic and heats itself up through resistive heating. The temperature of the heating section 42 is the highest temperature measured on the outer surface of the pin heater.

[0059] Figure 3 is a graph showing the temperature of the outermost layer of the smokeable substance 16. In the graph shown in Figure 3, the vertical axis represents temperature and the horizontal axis represents time. As shown in Figure 3, when the thickness A of the first void S1 is 1.0 mm, the temperature gradually rises after heating begins and starts to stabilize at around 150 seconds. After approximately 270 seconds, the temperature fluctuates between 150°C and 200°C because the temperature temporarily drops due to inhalation every 30 seconds. On the other hand, when the thickness A of the first void S1 is 1.5 mm, the temperature gradually rises after heating begins and starts to stabilize at around 90 seconds. After 120 seconds, the temperature fluctuates between approximately 210°C and 260°C. When the thickness A of the first void S1 is 2.0 mm, the temperature also gradually rises after heating begins and starts to stabilize at around 90 seconds. After 120 seconds, the temperature fluctuates between approximately 200°C and 275°C.

[0060] According to the above experimental examples, when the thickness A of the first void S1 is 1.0 mm, the temperature of the outermost layer of the smokeable substance 16 does not reach 200°C. Here, the temperature at which aerosol sources such as glycerin and propylene glycol contained in the smokeable substance 16 evaporate is, for example, about 250°C. Therefore, it was found that when the thickness A of the first void S1 is 1.0 mm, the heat from the smokeable substance 16 is taken away by the chamber 50, and the temperature of the outer surface of the consumable 10 does not rise to the evaporation temperature of the aerosol source. On the other hand, when the thickness A of the first void S1 is 1.5 mm and 2.0 mm, the temperature of the outermost layer of the smokeable substance 16 exceeds 250°C, although it temporarily decreases due to suction. That is, when the thickness A of the first void S1 is 1.5 mm and 2.0 mm, it was found that the removal of heat from the smokeable substance 16 by the chamber 50 is suppressed or reduced, and the aerosol source is evaporated from the outermost layer of the smokeable substance 16. Therefore, when the thickness A of the first void S1 is 1.5 mm and 2.0 mm, the aerosol source can be evaporated from almost the entire amount of the smokeable substance 16 compared to when the thickness A is 1.0 mm, thus increasing the amount of aerosol generated.

[0061] Furthermore, referring to the graph in Figure 3, it can be seen that the temperature difference when the thickness A of the first void S1 is 1.0 mm and 1.5 mm is clearly larger than the temperature difference when the thickness A of the first void S1 is 1.5 mm and 2.0 mm. In other words, although the difference in the thickness A of the first void S1 is 0.5 mm in both cases, reducing the thickness A from 1.5 mm to 1.0 mm significantly reduces the thermal insulation performance, while increasing the thickness A from 1.5 mm to 2.0 mm does not significantly change the thermal insulation performance of the first void S1. This suggests that as the thickness A of the first void S1 is gradually reduced, there is a critical point around a thickness A of 1.5 mm, at which point the thermal insulation performance deteriorates significantly. In other words, when the thickness A of the first void S1 is less than 1.5 mm, the deterioration of thermal insulation performance per unit thickness becomes more pronounced compared to when the thickness A is 1.5 mm or more.

[0062] Therefore, based on the above experimental examples, it is preferable that the thickness A of the first void S1 be 1.5 mm or more. Furthermore, if the thickness A of the first void S1 is significantly larger than 1.5 mm, although the outermost layer of the smokeable substance 16 can be sufficiently heated, the heating device 20 (housing 30) becomes unnecessarily large. In addition, it was observed that the temperature during inhalation every 30 seconds tends to decrease as the thickness A increases. For this reason, from the viewpoint of the size of the heating device 20 and the temperature drop during inhalation, it is preferable that the thickness A of the first void S1 be 3.0 mm or less. Also, referring to the graph in Figure 3, as mentioned above, even if the thickness A of the first void S1 increases from 1.5 mm to 2.0 mm, there is no significant change in the thermal insulation performance of the first void S1. This suggests that when the thickness A of the first void S1 exceeds 2.0 mm, increasing the thickness A will reduce the effect of the chamber 50 in reducing heat removal from the smokeable substance 16. Therefore, considering the size and thermal insulation performance of the heating device 20, it is more preferable that the thickness A of the first void S1 be 2.0 mm or less.

[0063] Furthermore, in the heating device 20 shown in Figure 2, the inner surface 36a of the guide portion 36 defines the opening 34 into which the consumable 10 is inserted. Since the inner surface 36a of the guide portion 36 contacts the outer surface of the consumable 10 when the consumable 10 is inserted into the opening 34, the diameter of the inner surface 36a of the guide portion 36 can be said to be approximately the same as the outer diameter of the consumable 10. For this reason, the distance between the inner surface of the side wall 52 of the chamber 50 and the inner surface 36a of the guide portion 36 in a direction perpendicular to the insertion direction of the consumable 10 is approximately the same as the thickness A of the first gap S1. Accordingly, according to the above experimental example, the distance between the inner surface of the side wall 52 of the chamber 50 and the inner surface 36a of the guide portion 36 in a direction perpendicular to the insertion direction of the consumable 10 is preferably 1.5 mm or more and 3.0 mm or less, and more preferably 1.5 mm or more and 2.0 mm or less.

[0064] Next, another embodiment of the heating device 20 will be described. Figure 4 is an enlarged schematic view of the heating unit 40 of the heating device 20 according to another embodiment. The heating device 20 shown in Figure 4 differs from the heating device 20 shown in Figures 1 and 2 in that the chamber 50 is configured to be movable relative to the housing 30 along the insertion direction of the consumable 10. Specifically, the contact portion 56 of the chamber 50 is not fixed to the housing 30 but is configured to be slidable relative to the housing 30. The housing 30 also has an opening 30b, through which a part of the lever 58 connected to the contact portion 56 is exposed to the outside of the housing 30. For example, the opening 30b communicates with a first air passage F1 and a second air passage F2 and can also function as an air inlet. The user can move the chamber 50 connected to the lever 58 in the insertion direction of the consumable 10 by moving the lever 58 along the insertion direction of the consumable 10.

[0065] According to the embodiment shown in Figure 4, after using the consumable 10, with the smokeable substance 16 placed inside the chamber 50, the lever 58 is operated to move the chamber 50 toward the insertion end 32, thereby preventing or reducing the spillage of the smokeable substance 16, such as tobacco shreds, from the consumable 10, while removing the smokeable substance 16 from the blade portion 42a. Part of the third gap S3 becomes the range of motion of the side wall 52 of the chamber 50 when the chamber 50 moves toward the insertion end 32. Even when the chamber 50 moves toward the insertion end 32 to remove the smokeable substance 16 from the blade portion 42a, the first gap S1 and the second gap S2 are in communication through the third gap S3 by the side wall 52 of the chamber 50. That is, the third gap S3 is not closed by the side wall 52 of the chamber 50.

[0066] The lever 58 may be connected to any location in the chamber 50, but it is preferable to connect it to the contact portion 56. As described above, since the contact portion 56 is located relatively far from the blade portion 42a, the transfer of heat from the blade portion 42a to the contact portion 56 is suppressed or reduced. Therefore, by connecting the lever 58 to the contact portion 56, heat from the blade portion 42a is less likely to be transferred to the lever 58, allowing the user to operate the lever 58 more safely.

[0067] Figure 5 is an enlarged schematic diagram of the heating unit 40 of a heating device 20 according to yet another embodiment. The heating device 20 shown in Figure 5 differs from the heating device 20 shown in Figure 4 in that the first void S1 and the second void S2 are not in communication with each other, and that the heating section 42 is replaced with an induction coil 44 and a susceptor 18 (corresponding to an example of a heating element). The susceptor 18 is provided inside the smokeable substance 16 of the consumable 10. Also, the consumable 10 shown in Figure 5 differs from the consumable 10 shown in Figures 1, 2 and 4 in that the filter section 12 is replaced with a mouthpiece M1 provided in the guide section 36.

[0068] Specifically, as shown in Figure 5, the heating device 20 has a sliding gap S4 with a thickness approximately the same as the thickness of the side wall 52 of the chamber 50, instead of the third gap S3. The sliding gap S4 extends in the direction in which the consumable 10 is inserted. As shown in Figure 5, when the consumable 10 is positioned at a desired location within the chamber 50, the tip of the side wall 52 of the chamber 50 is inserted substantially without gap into a portion of the sliding gap S4, and the portion of the sliding gap S4 becomes the range of motion of the side wall 52 of the chamber 50 when the chamber 50 moves toward the insertion end 32. As a result, the first gap S1 and the second gap S2 are separated by the side wall 52 of the chamber 50 and do not communicate with each other. Therefore, air convection between the first gap S1 and the second gap S2 can be inhibited, and the thermal insulation performance in the first gap S1 and the second gap S2 can be further improved. The second gap S2 may or may not be in communication with the air inlet 30a. The sliding gap S4 may have an air hole that communicates with the outside of the housing 30 to release air when the chamber 50 moves toward the insertion end 32.

[0069] The hollow filter 14 of the consumable 10 is preferably made of a material with low thermal conductivity. By positioning the hollow filter 14 within the opening 34 of the housing 30, the hollow filter 14 and the inhalable substance 16 can be positioned in a direction perpendicular to the insertion direction of the consumable 10. The hollow filter 14 is not limited to a hollow structure, but may be made of a material having any structure that allows aerosols to pass through. The mouthpiece M1 may be detachably attached to the consumable 10. The mouthpiece M1 may be used repeatedly for multiple consumables 10. After removing the mouthpiece M1, the consumable 10 becomes trapped inside the heating device 20 and difficult to remove. Therefore, the user can push the end of the consumable 10 out of the heating device 20 by operating the lever 58 to move the chamber 50 toward the insertion end 32.

[0070] The induction coil 44 may be, for example, a spiral-shaped flat coil. As shown in Figure 5, the induction coil 44 may be provided on the opposite side of the consumable 10 via the bottom wall 54 of the chamber 50 when the consumable 10 is positioned in a desired location within the chamber 50. The induction coil 44 is configured to induce heating of a susceptor 18 provided inside the smokeable substance 16, thereby generating heat. This allows the heated susceptor 18 to heat the smokeable substance 16 from the inside. In the embodiment of Figure 5, it is preferable that the housing 30 and / or chamber 50 (especially the bottom wall 54) are permeable and non-conductive (electrically insulating). This makes it less likely for the housing 30 and / or chamber 50 to generate heat due to the induction coil 44, and allows the susceptor 18 to generate heat efficiently. Examples of materials that are permeable and non-conductive (electrically insulating) include glass, plants, wood, paper, resins such as PEEK, etc.

[0071] Although embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible within the scope of the claims, specification, and drawings. Furthermore, any shape or material not directly described in the specification and drawings is within the scope of the technical idea of ​​the present invention as long as it achieves the function and effect of the present invention. [Explanation of Symbols]

[0072] 10: Consumables 16: Smoking substances 18: Susceptor 20: Heating devices 30: Housing 30a: Air inlet 32: Insertion end 34:Aperture 36: Guide Section 42 :Heating element 50: Chamber 52: Side wall 54: Bottom wall 54a:Aperture 56: Contact area 100: Heating System F1: First air passage F2: Second air passage F3: Branch road S1: 1st void S2: 2nd void

Claims

1. A heating device capable of heating smoky substances contained in consumables, Air inlet and Housing and A heating element that heats the smokeable substance from the inside, A chamber located within the housing and having side walls surrounding the side surface of the smokeable substance, A first void, at least partially partitioned by the inner circumferential surface of the side wall of the chamber and the side surface of the consumable housed in the chamber, The housing and the outer peripheral surface of the side wall of the chamber have a second gap, A heating device in which the thickness of the first void is greater than the thickness of the second void.

2. In the heating device described in claim 1, The air inlet has an air passage leading to the inside of the chamber, A heating device in which the air passage includes a first air passage passing through the second void and the first void.

3. In the heating device described in claim 1 or 2, The air inlet has an air passage leading to the inside of the chamber, The chamber has a bottom wall with an opening, A heating device in which the air passage includes a second air passage leading to an opening in the bottom wall of the chamber.

4. In the heating device described in claim 3, The housing has an insertion end into which the consumables are inserted, The air inlet includes a branching path that branches off into the first air passage and the second air passage, A heating device located in the insertion direction of the consumable, in the order of insertion end, bottom wall, branch passage, and air inlet.

5. In the heating device described in claim 3 or 4, A heating device in which the amount of air supplied to the smokeable substance from the second air passage is greater than the amount of air supplied to the smokeable substance from the first air passage.

6. In a heating device according to any one of claims 1 to 5, The heating device has a positioning portion that positions the smokeable substance in the insertion direction of the consumable such that when the smokeable substance is heated, a portion of the heating device does not come into contact with the side of the consumable corresponding to the smokeable substance.

7. In a heating device according to any one of claims 1 to 6, A heating device having a guide portion that contacts the side of the consumable and guides the smokeable substance to the heating element.

8. In a heating device according to any one of claims 1 to 7, A heating device in which the volume of the first void is greater than the volume of the second void.

9. In a heating device according to any one of claims 1 to 8, The chamber has a contact portion that contacts the housing, The contact portion is a heating device positioned so as not to overlap with the heating element in the insertion direction of the consumable.

10. In a heating device according to any one of claims 1 to 9, The housing has an insertion end into which the consumables are inserted, A heating device wherein, in the insertion direction of the consumable, one end of the side wall of the chamber is located on the insertion end side of the housing rather than the heating element.

11. A heating device according to any one of claims 1 to 10, The bottom wall of the chamber is configured to be movable relative to the housing along the insertion direction of the consumables, and is a heating device.

12. A heating device according to any one of claims 1 to 10, A heating system comprising a consumable containing a smokeable substance that is heated by the aforementioned heating device.

13. A heating system comprising a heating device capable of heating a smokeable substance contained in a consumable, and a consumable containing the smokeable substance heated by the heating device, Air inlet and Housing and A heating element that heats the smokeable substance from the inside, A chamber located within the housing and having side walls surrounding the side surface of the smokeable substance, A first gap between which at least a portion is partitioned by the inner circumferential surface of the side wall of the chamber and the side surface of the consumable housed in the chamber, The housing and the outer peripheral surface of the side wall of the chamber have a second gap, A heating system in which the thickness of the first void is greater than the thickness of the second void.

14. A heating device capable of heating smoky substances contained in consumables, Housing and A heating element that heats the smokeable substance from the inside, A chamber located within the housing and having side walls surrounding the side surface of the smokeable substance, The chamber has a first gap between which at least a portion is partitioned by the inner circumferential surface of the side wall of the chamber and the side surface of the consumable housed in the chamber, A heating device in which the thickness of the first void is 1.5 mm or more and 3.0 mm or less.

15. A heating device capable of heating smoky substances contained in consumables, Housing and A heating element that heats the smokeable substance from the inside, A chamber located within the housing and having side walls surrounding the side surface of the smokeable substance, It has a guide portion having an inner surface that contacts the consumable and guides the smokeable substance to the heating element, A heating device in which the distance between the inner surface of the side wall of the chamber and the inner surface of the guide portion in a direction perpendicular to the insertion direction of the consumable is 1.5 mm or more and 3.0 mm or less.

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