TW202021488A - Smoking device with non-combustion type heating - Google Patents

Abstract

Provided is a smoking device with non-combustion type heating, capable of inhibiting the condensation of aerosol produced by heating while delivering a sufficient amount of aerosol to a smoker. The smoking device comprises: a container for receiving a tobacco rod that includes cut tobacco and aerosol-producing base materials; an interior heater arranged within the container for penetration or insertion into the tobacco rod inserted into the container, such that the aerosol-producing base materials evaporate when the tobacco rod is heated from the inside; and an exterior heater arranged on the periphery of the container for preheating the outer periphery of the tobacco rod at least within a pre-heating period of the tobacco rod, so as to inhibit the occurrence of condensation of aerosol while the interior heater works.

Description

Non-combustion heating type smoking device

The invention relates to a non-combustion heating type smoking device.

A non-combustion heating type smoking device is known in the form of heating a tobacco rod containing shredded tobacco and a mist generating substrate (glycerin, propylene glycol, etc.) with a heater such as an electric heater to deliver the mist generated Smoker.

In the non-combustion heating type smoking device, it has been desired to increase the amount of mist generated (the amount of delivery) to improve the sense of smoke. Therefore, it is very important to convey the mist generated by heating the mist generating substrate to the suction port without any waste.

[Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent No. 6026556

Patent Document 2: Japanese Special Publication No. 2014-525251

Patent Document 3: Japanese Special Form No. 2013-511962

However, when the conventional non-combustion heating type smoking device heats the tobacco rod, there is likely to be a part with a lower product temperature, and there will be once volatilized mist generation base material will be due to the lower product temperature. And the situation of cooling and condensing. As a result, it may not be possible to deliver a sufficient amount of mist to the smoker, and there is a risk of a decrease in the amount of smoke. The present invention was developed in view of the above-mentioned actual situation, and its object is to provide a non-combustion heating type smoking device that can suppress the condensation of mist generated by heating and deliver a sufficient amount of mist to the smoker.

The non-combustion heating type smoking device of the present invention to solve the above-mentioned problems is provided with: a storage tank for containing tobacco rods containing tobacco shreds and a mist generating substrate; an internal heater is arranged in the aforementioned storage tank and used To penetrate the tobacco rod inserted in the accommodating groove or into the recess formed on the end surface of the tobacco rod, and heat the tobacco rod from the inside to volatilize the mist generating substrate; and the external heater is arranged in At least during the preheating period of the tobacco rod, the outer peripheral part of the tobacco rod is preheated on the side peripheral part of the accommodating groove, so as to suppress condensation of mist that occurs when the internal heater is operated.

In addition, it may also be provided with a control unit for controlling the internal heater and the external heater, and the control unit controls the temperature of the external heater during heating while both the internal heater and the external heater operate. It is controlled to be higher than the temperature of the aforementioned internal heater.

In addition, the control unit may reach a predetermined set time after the elapsed time after the external heater starts to preheat the tobacco rod, or the temperature of the external heater When the predetermined set temperature is reached, the operation of the external heater is stopped, but the operation of the aforementioned internal heater is continued.

The control unit may increase the temperature of the internal heater after stopping the operation of the external heater than before stopping the operation of the external heater.

The control unit may start the preheating by operating only the external heater when starting the preheating of the tobacco rod, and activate the internal heater after the operation of the external heater.

In addition, the receiving groove may also have: an insertion port located on the front end side of the side peripheral portion and belonging to an open end that is open to allow the tobacco rod to be inserted; and the bottom of the groove, which is located at the side peripheral portion The base end side; the side peripheral portion has: a first area including a base end for the bottom of the groove; and a second area adjacent to the first area and located on the side of the insertion port. The external heater may not be provided In the first area, it is arranged in the second area.

The said external heater may be arrange|positioned over the whole circumference along the circumferential direction of the said side peripheral part in the partial section or the whole section of the said 2nd area|region.

In addition, the internal heater may have n-fold symmetry with respect to the central axis of the storage tank, and n is an integer of 3 or more.

In addition, the internal heater may have a cylindrical shape, and a conical part may be formed on the tip side.

In addition, the internal heater may have a tapered shape or a truncated cone shape, and may have a tapered shape from the groove bottom side toward the insertion port side.

The aforementioned internal heater may also have a conical shape or a truncated cone shape.

The side peripheral portion may further include a third area adjacent to the second area and including the insertion port, and the external heater is not arranged in the third area.

The position of the tip of the internal heater may correspond to the second area or the third area of the side peripheral portion.

In addition, the means for solving the problem of the present invention can be combined and adopted as much as possible.

According to the present invention, it is possible to provide a non-combustion heating type smoking device capable of suppressing condensation of mist caused by heating and delivering a sufficient amount of mist to a smoker.

1‧‧‧Non-combustion heating type smoking device

2‧‧‧Shell

3‧‧‧Heater

4‧‧‧Controller

5‧‧‧Power

10‧‧‧Non-combustion heating type smoking articles

11‧‧‧Tobacco rod

12‧‧‧Suction

31‧‧‧The heater shell

32, 332‧‧‧ groove side wall

32a‧‧‧Inner peripheral surface

32b‧‧‧Outer peripheral surface

32c‧‧‧Base end

33‧‧‧Heat-resistant cup

33a‧‧‧through hole

34‧‧‧Containment slot

35‧‧‧External heater

35a‧‧‧Heating surface

36‧‧‧Internal heater

36a‧‧‧Base end

36b‧‧‧Front end

37‧‧‧Air Insulation Department

38‧‧‧Insertion port

111‧‧‧Filling

311‧‧‧Bottom

312‧‧‧Outer cylinder wall

313‧‧‧Thick Wall

331‧‧‧Slot bottom

332a‧‧‧Inner peripheral surface

CL1‧‧‧Central axis

MP1‧‧‧First measurement position

MP2‧‧‧The second measuring position

MP3‧‧‧3rd measuring position

P1‧‧‧The position of the rear end of the tobacco rod during containment

R1‧‧‧Region 1

R2‧‧‧Region 2

R3‧‧‧Region 3

Figure 1 is a schematic diagram of the internal structure of the non-combustion heating type smoking device of the first embodiment.

Fig. 2 is a schematic structural diagram of a non-combustion heating type smoking article used in a non-combustion heating type smoking device.

Figure 3 is a schematic view of a longitudinal section of the heater.

Fig. 4 is a perspective view showing the schematic structure of the heater.

Fig. 5 is a schematic view of a state in which a tobacco rod of a non-combustion heating smoking article is inserted into a storage slot from an insertion port of a heater.

Fig. 6 is a schematic view of a state in which a tobacco rod of a non-combustion heating smoking article is inserted into a storage slot from the insertion port of the heater.

Fig. 7 is a time chart of the operating states of the external heater and the internal heater when heating control is performed.

Fig. 8 is an explanatory diagram of changes in the surface temperature of the external heater and the internal heater when heating control is performed.

Figure 9 is a schematic diagram of the results of the temperature measurement test.

Figure 10 is a schematic diagram of the results of the temperature measurement test.

Figure 11 is a graph showing the results of the temperature measurement test.

Figure 12 is a schematic diagram of the results of the temperature measurement test.

Figure 13 is a schematic diagram of the position for measuring the product temperature of a tobacco rod.

Figure 14 is a schematic diagram of a modification of the internal heater in the heater.

Figure 15 is a schematic diagram of a modification of the internal heater in the heater.

Figure 16 is a schematic diagram of a modification of the internal heater in the heater.

Here, the embodiment of the non-combustion heating type smoking device of the present invention will be described based on the drawings. In addition, the dimensions, materials, shapes, relative arrangements, etc. of the constituent elements described in the present embodiment do not limit the technical scope of the invention to these, as long as there is no specific description.

<Embodiment 1>

Fig. 1 is a schematic diagram of the internal structure of the non-combustion heating type smoking device 1 of the first embodiment. The non-combustion heating type smoking device 1 has a casing 2 which is a casing for accommodating various components. A heater 3, a controller (control part) 4, a power source 5, and the like are housed in the casing 2.

FIG. 2 is a schematic configuration diagram of the non-combustion heating type smoking article 1 used in the non-combustion heating type smoking device 1. The non-combustion heating type smoking article 10 has a tobacco rod 11 and a mouthpiece 12. Hereinafter, the end on the side of the tobacco rod 11 in the non-combustion heating type smoking article 10 is referred to as a tip, and the side of the mouthpiece 12 is referred to as a base end. The tobacco rod 11 is composed of a filler 111 including shredded tobacco and a mist generating base material, and a cigarette paper 112 that wraps the filler 111. Although the material of shredded tobacco is not particularly limited, well-known items such as leaf sheaths and leaf veins can be used. The filler 111 includes a mist generating base material that generates mist. The type of mist generating substrate is not particularly limited, and extractable substances from various natural products can be appropriately selected according to the application. Examples of the mist generating substrate system include glycerin, propylene glycol, glycerol acetate, 1,3-butanediol, and mixtures of these. The filler 111 containing shredded tobacco and a mist generating base material can be exemplified by the homogenized tobacco formed in tobacco fine powder mixed with binders, thickeners, crosslinking agents, flavors, hydrophilic flavors, etc. as additives. Liquid, colloid, sol, or weak solid slurry of lipophilic fragrance, viscosity modifier, humectant, reinforcing material, etc., is dried, dehydrated, paper-made, and extruded to obtain a reconstituted tobacco raw material , Such as tobacco flakes, tobacco flakes, tobacco particles, etc. In addition, the filling 111 may also contain fragrance. The type of flavor is not particularly limited.

The mouthpiece portion 12 includes, for example, a filter portion formed by wrapping cellulose acetate formed into a cylindrical shape with cigarette paper, etc., and filters out part of the mist generated on the tobacco rod 11 when smoking. Of course, the mouthpiece 12 may also include parts other than the filter part. The tobacco rod 11 and the mouthpiece 12 are connected to each other by winding the outer paper 13 into one body.

FIG. 3 is a schematic view of a longitudinal section of the heater 3. Specifically, the cross-sectional structure of the heater 3 in the A-A arrow cross section in Fig. 1 is shown in Fig. 3. FIG. 4 is a perspective view showing the schematic structure of the heater 3.

The heater 3 has a heater housing 31 which itself has a cylindrical shape with a bottom. The heater housing 31 has a bottom portion 311 that is in the shape of a disk and a cylindrical outer tube wall 312 that rises from the bottom portion 311. The opening end of the outer cylinder wall 312 of the heater housing 31 is opened to the outside of the housing 2 through the opening provided in the housing 2, and forms a cylindrical shape into which the tobacco rod 11 of the non-combustion heating smoking article 10 can be inserted. Section of the receiving slot 34.

Here, on the front end side of the outer cylindrical wall 312 of the heater housing 31, a thick portion 313 having an inner diameter smaller than other parts is formed. The front end of the outer cylinder wall 312 here refers to the end of the outer cylinder wall 312 that is connected to the bottom 311 on the opposite side. In addition, a groove-side peripheral wall 32 having a cylindrical shape is provided inside the outer cylindrical wall 312 of the heater housing 31. The outer diameter of the groove side peripheral wall 32 is equal to the inner diameter of the thick portion 313 of the outer cylindrical wall 312. Furthermore, as shown in FIG. 3, an annular and hollow air heat insulating portion 37 is formed between the inner surface of the outer cylindrical wall 312 of the heater housing 31 and the outer peripheral surface 32b of the groove side peripheral wall 32. In addition, an open insertion port 38 into which the tobacco rod 11 can be inserted is formed at the front end of the groove side peripheral wall 32. In addition, the end portion opposite to the front end side where the insertion port 38 is formed in the groove-side peripheral wall 32 is referred to as a base end 32c.

A heat-resistant cup 33 having a cylindrical shape with a bottom is provided on the bottom 311 side of the heater housing 31. The heat-resistant cup 33 is formed of a heat-resistant material such as aluminum, and has a groove bottom portion 331 having a disc shape and a groove side peripheral wall 332 standing up from the groove bottom portion 331. The groove bottom 331 of the heat-resistant cup 33 is arranged in a state of being overlapped on the inside of the bottom 311 of the heater housing 31 and forms the groove bottom of the receiving groove 34. In addition, the groove side peripheral wall 32 and the groove side peripheral wall 332 form a side peripheral portion of the storage groove 34.

As shown in Figs. 3 and 4, the heater 3 is formed with a heat-resistant cup 33 and a groove-side peripheral wall 32 to form a accommodating groove 34 for accommodating the tobacco rod 11 and which itself is a cavity. Also, as shown in Figure 3 As shown in FIG. 4, an annular external heater 35 is provided on the groove side peripheral wall 32 so as to face the storage groove 34. The external heater 35 is housed in the recess of the groove side peripheral wall 32 so as to be flush with the inner peripheral surface 32 a of the groove side peripheral wall 32. Here, the symbol 35a denotes a heating surface facing the storage tank 34. In addition, the ring-shaped external heater 35 is arranged over the entire circumference along the inner peripheral surface 32 a of the groove-side peripheral wall 32. In other words, the external heater 35 is arranged along the circumferential direction of the storage tank 34 over the entire circumference of the side peripheral portion. In addition, the symbol CL1 shown in FIG. 3 is the central axis of the heater housing 31. In addition, the central axis CL1 is also the central axis of the storage groove 34 and the groove-side peripheral wall 32 at the same time.

Furthermore, as shown in FIGS. 3 and 4, an internal heater 36 is provided in the storage tank 34. The internal heater 36 has a truncated cone shape, and is vertically protruded from the center of the bottom 311 of the heater housing 31 toward the receiving groove 34 side. A through hole 33a is formed in the center of the groove bottom 331 of the heat-resistant cup 33, and the internal heater 36 is inserted into the through hole 33a to protrude from the groove bottom 331 toward the receiving groove 34 side. The central axis of the internal heater 36 is coaxial with the central axis CL1 of the heater housing 31 (accommodating groove 34). The symbol 36a is the base end of the internal heater 36, and the symbol 36b is the tip of the internal heater 36. The internal heater 36 extends from the groove bottom portion 331 toward the insertion port 38, and gradually becomes thinner from the base end portion 36a toward the front end portion 36b. In addition, the types of the internal heater 36 and the external heater 35 are not particularly limited, but for example, a heating wire (such as nickel-chromium alloy, iron-chromium alloy, iron-nickel, etc.) is laid on steel, or ceramic heating is used. Heater, Sheathed Heater, etc. In addition, the so-called sheath heater is a heater in which a hot wire and a filler are covered with a metal tube.

In addition, in this embodiment, the tank side peripheral wall 32 is formed of a known heat-insulating and heat-resistant material that can withstand the heat of the external heater 35 and does not diffuse the heat of the external heater 35. Regarding the material used for the groove side peripheral wall 32 having such heat insulation and heat resistance properties, for example, Examples include alumina and silica ceramics, or resins such as PEEK (polyether ether ketone), PPS (polyphenylene sulfide), and PTFE (polytetrafluoroethylene) that have high heat resistance.

In addition, in this embodiment, the inner peripheral surface 32a of the groove side peripheral wall 32, the inner peripheral surface 332a of the groove side peripheral wall 332 of the heat-resistant cup 33, and the heating surface 35a of the external heater 35 have no level difference with each other, and are located on the same plane. Therefore, the inner diameter of the receiving groove 34 is fixed along the direction of the central axis CL1. In this embodiment, the inner diameter of the receiving groove 34 can be equal to the outer diameter of the tobacco rod 11 or slightly larger than the outer diameter of the tobacco rod 11.

Here, R1 to R3 shown in FIG. 3 are the first area to the third area in the groove side peripheral wall 32 (side peripheral portion). The first region R1 of the groove-side peripheral wall 32 is a region including the base end 32c where the groove bottom 331 is provided. On the other hand, the second region R2 of the groove-side peripheral wall 32 is a region adjacent to the first region R1 and located on the side of the insertion port 38, and is a region where the external heater 35 can be arranged in a partial section or the entire section. That is, the second region R2 has a meaning as a region for defining the maximum range in which the external heater 35 is formed, and the external heater 35 is arranged in the entire region or a partial region of the second region R2. On the other hand, the third region R3 of the groove-side peripheral wall 32 is a region adjacent to the second region R2 and including the insertion port 38. Here, the first region R1 to the third region R3 are regions formed along the central axis CL1 of the accommodating groove 34, and follow the first region R1, the second region R2, and the third region R3 from the groove bottom 331 toward the insertion port 38. The order is formed. In addition, the length of each of the first region R1 to the third region R3 in the direction of the central axis CL1 can be changed as appropriate. As shown in FIG. 3, the external heater 35 is only arranged in the second region R2 on the groove side peripheral wall 32, and the external heater 35 is not arranged in the first region R1 and the third region R3. In the example shown in FIG. 3, the external heater 35 is arranged in the entire section of the second region R2 of the groove side peripheral wall 32, but the external heater 35 may be provided only in a partial section of the second region R2.

5 and 6 are schematic diagrams of a state where the tobacco rod 11 of the non-combustion heating smoking article 10 is inserted into the storage groove 34 from the insertion port 38 of the heater 3. The internal heater 36 of the heater 3 of this embodiment has a truncated cone shape and is tapered toward the front end 36b. Therefore, when the tobacco rod 11 (filler 111) is inserted into the receiving groove 34, the internal heater 36 easily penetrates the tobacco rod 11 (filler 111). In addition, in this embodiment, when the front end surface 11a (refer to FIG. 2) of the tobacco rod 11 abuts against the bottom of the accommodating groove 34, that is, the groove bottom 331 of the heat-resistant cup 33, the contact of the tobacco rod 11 to the accommodating groove is completed. 34's insertion. As shown in FIG. 5, in a state where the insertion of the tobacco rod 11 into the receiving groove 34 is completed, the rear end portion 11b of the tobacco rod 11 is positioned corresponding to the third region R3 of the groove side peripheral wall 32. In addition, the symbol P1 shown in Fig. 3 shows the position of the rear end 11b of the tobacco rod 11 corresponding to the position of the rear end 11b of the tobacco rod 11 in the state where the insertion of the tobacco rod 11 into the receiving groove 34 is completed (hereinafter referred to as "the rear end position of the tobacco rod during storage" "). In this embodiment, the distance between the rear end position P1 of the tobacco rod and the external heater 35 during storage is set to a relatively small size of about 1 mm.

The heater 3 having the above-described structure includes an external heater 35 arranged on the side peripheral portion of the storage tank 34 and an internal heater 36 arranged on the center side of the transverse section of the storage tank 34 along the central axis CL1. The external heater 35 and the internal heater 36 of the heater 3 generate heat by supplying electric power from the power source 5. The power source 5 is not particularly limited, but may be, for example, a rechargeable lithium ion battery. In addition, Fig. 1 does not show the connection between the external heater 35 and the internal heater 36 of the heater 3 and the power source 5, but the external heater 35 and the internal heater 36 are connected to the power source, respectively. In addition, the controller 4 is electrically connected to the power source 5, and the controller 4 controls the power supply from the power source 5 to the external heater 35 and the internal heater 36. In addition, the non-combustion heating type smoking device 1 is provided with a user interface (for example, operating As buttons, etc.), the controller 4 is electrically connected to the user interface. The controller 4 controls the operation of the heater 3 (the external heater 35 and the internal heater 36) by detecting the operation performed by the user on the user interface. Hereinafter, the control of the external heater 35 and the internal heater 36 by the controller 4 in the non-combustion heating type smoking device 1 will be described.

For example, when the power supply of the non-combustion heating type smoking device 1 is turned off, and the user performs a predetermined ON operation on the operation button of the non-combustion heating type smoking device 1, the controller 4 starts from the power supply 5 to the heater 3 Electricity is supplied, and as shown in FIG. 5, heating control is performed to heat the tobacco rod 11 in the state accommodated in the accommodating groove 34 of the heater 3. FIG. 7 is a timing chart of the operating states of the external heater 35 and the internal heater 36 during the heating control of the heater 3 executed by the controller 4. Fig. 8 is an explanatory diagram of changes in the surface temperature of the external heater 35 and the internal heater 36 during heating control.

The time T0 in Fig. 7 indicates the time point when the controller 4 detects the ON operation of the operation button of the non-combustion heating type smoking device 1 (hereinafter referred to as "heating start time point"). As shown in FIG. 7, at the time when the heater is activated, the controller 4 starts to supply electric power from the power source 5 to only the external heater 35.

Next, at time T1, the controller 4 starts to supply power from the power source 5 to the internal heater 36 while continuing to supply power from the power source 5 to the external heater 35. Hereinafter, the time T1 is referred to as the "internal heater start time point". Next, at time T2, the controller 4 stops the power supply from the power source 5 to the external heater 35 while continuing to supply power from the power source 5 to the internal heater 36. Hereinafter, the time T2 is referred to as "external heating stop time point". Next, at time T3 after the predetermined smoking time has elapsed from time T0 (the heating start time point), The power supply of the power supply 5 to the internal heater 36 is stopped. Hereinafter, the time T3 is referred to as the "heating stop time point").

As described above, the non-combustion heating type smoking device 1 of the present embodiment operates only the external heater 35 at the heating start time point when heating the tobacco rod 11 to perform preheating (initial heating) of the tobacco rod 11. Here, the external heater 35 is provided along the groove-side peripheral wall 32 located on the outer circumference (side surface) of the storage groove 34, so that the outer circumference of the tobacco rod 11 stored in the storage groove 34 can be efficiently heated. That is, before starting to heat the tobacco rod 11 with the internal heater 36 at time T1 (the internal heating start time point), the tobacco rod 11, especially the outer periphery, can be preheated efficiently. Here, the period from time T0 (heating start time point) to time T1 (internal heater activation time point) is referred to as a "warm-up period"). In addition, the warm-up period can be set to a time when the elapsed time from the heating start time point (that is, the warm-up start) reaches a predetermined set time, or the temperature of the external heater 35 reaches a predetermined set temperature. For example, during the warm-up period, the controller 4 may also set the set temperature when controlling the external heater 35 to 300°C.

Next, after the heating start time, the elapsed time reaches the predetermined set time, or the temperature of the external heater 35 reaches the predetermined set temperature, that is, time T1 (internal heating start time) to time T2 (external heating The period until the heating stop time point (hereinafter referred to as the "simultaneous heating period") is to heat the tobacco rod 11 by both the external heater 35 and the internal heater 36. The internal heater 36 is connected to the storage tank 34 as described above. The central axis CL1 of the tobacco rod 11 (filler 111) is coaxially arranged. Therefore, the heat of the internal heater 36 penetrating the tobacco rod 11 (filler 111) is transmitted radially from the center side of the tobacco rod 11 to the outer peripheral side. As a result, it can be efficiently The tobacco rod 11 is heated, and the mist contained in the filler 111 of the tobacco rod 11 can be generated into a substrate in a short time (For example, glycerin, etc.) or the flavor components contained in the shredded tobacco volatilize, and a mist containing flavor components is generated.

In addition, as the filler 111 of the tobacco rod 11 containing a mist generating substrate (for example, glycerin, etc.), as the product temperature rises, the water (moisture) in the filler 111 first evaporates. This evaporation occurs near the boiling point (100°C) of water. Next, when the product temperature of the filler 111 of the tobacco rod 11 rises further, then the nicotine with a boiling point of about 250°C at atmospheric pressure begins to volatilize, and when the product temperature rises further, the glycerin with a boiling point of about 290°C at atmospheric pressure evaporates. It can be tasted as a mist. As the industry knows, tobacco raw materials contain a variety of ingredients, which exist as compounds. Therefore, it is not only the boiling point of pure substances such as water, nicotine and glycerin that the simple evaporation phenomenon occurs, but scientific It can be considered that the main components will evaporate (volatilize) in order of boiling point.

Here, as shown in FIG. 8, during the simultaneous heating period (T1 to T2), the controller 4 controls such that the temperature of the external heater 35 becomes higher than the temperature of the internal heater 36. For example, during the simultaneous heating period, the controller 4 sets the set temperature of the external heater 35 to 300°C and the set temperature of the internal heater 36 to 250°C to control the external heater 35 and the internal heater 36. In the present embodiment, during the preheating period of the tobacco rod 11, the external heater 35 abutting or close to the outer peripheral part accelerates and efficiently raises the temperature of the outer peripheral part of the tobacco rod 11. The temperature of the heater 35 is controlled so that the temperature of the internal heater 36 becomes higher. Thereby, the heat of the internal heater 36 is not easily accessible due to separation from the internal heater 36, and the outer peripheral portion of the tobacco rod 11 that is easily affected by external air (heat loss) can be actively heated. That is, the central side of the cross section of the tobacco rod 11 can be efficiently heated by the internal heater 36, and the internal heater can be efficiently heated by the external heater 35 The heat of the heater 36 is not easily transferred and is easily affected by external air (heat loss) on the outer periphery of the tobacco rod 11. Thereby, the entire tobacco rod 11 can be uniformly heated to a temperature at which the mist generating substrate can be fully volatilized.

In addition, during the preheating period, the tobacco rod 11 is heated only by the external heater 35, and the internal heater 36 is activated after the preheating period has passed after the external heater 35 is activated. When both the external heater 35 and the internal heater 36 operate, the total power consumption can be reduced.

In addition, as described above, the external heater 35 actively heats the outer periphery of the tobacco rod 11 during the preheating period and the simultaneous heating period, thereby suppressing the condensation (condensation/condensation) of the mist generating substrate once volatilized on the outer periphery of the tobacco rod 11 liquefaction). Therefore, in particular, it is possible to sufficiently ensure the amount of mist delivered during the initial smoking, and it is possible to improve the sense of smoke volume.

In particular, according to the non-combustion heating type smoking device 1 of the present embodiment, as shown in FIG. 5, the external heater 35 is located on the proximal side (the mouthpiece 12 side) of the tobacco rod 11 accommodated in the receiving groove 34. Therefore, the external heater 35 can intensively heat the area on the outer peripheral portion of the tobacco rod 11, particularly the proximal end side. Therefore, there is an advantage that the mist generated on the front end side (upstream side) of the tobacco rod 11 can be effectively suppressed from condensing on the proximal end side (downstream side) of the tobacco rod 11.

Here, the length of the external heater 35 extending in the direction of the central axis CL1 of the receiving groove 34, that is, the width of the external heater is preferably set to be at least one third or more of the tobacco rod 11. Thereby, the outer peripheral portion of the tobacco rod 11 can be sufficiently preheated during the preheating of the tobacco rod 11 before the heating by the internal heater 36 is started.

Next, during the simultaneous heating as described above, when the entire tobacco rod 11 is heated sufficiently, the temperature of the tobacco rod 11 can be maintained only by heating with the internal heater 36. The temperature is maintained at a temperature where the mist does not condense. Therefore, the controller 4 stops the operation of the external heater 35 when the external heating stop time point (time T2) is reached. At this time, the controller 4 stops the operation of the external heater 35 before the temperature of the internal heater 36 becomes higher than the temperature of the external heater 35. In addition, the external heating stop time point (time T2) that stops the operation of the external heater 35 can be set to a predetermined set time after the heating start time point (that is, the preheating start), or the external heating The time point when the temperature of the device 35 reaches a predetermined set temperature. Alternatively, the operation of the external heater 35 may be stopped when a certain time elapses after the temperature of the external heater 35 reaches a predetermined set temperature, and various modes may be adopted.

After the external heating stop time point (time T2), the tobacco rod 11 is heated only by the internal heater 36, so the temperature of the external heater 35 will tend to drop. Therefore, as shown in Figure 8, from the external heating stop time (time T2) to the heating stop time (time T3) in the middle of the period (hereinafter referred to as "internal heating period"), the temperature of the internal heater 36 is The temperature of the external heater 35 will be exceeded.

Here, compared to the external heater 35 arranged on the outer peripheral side of the accommodating groove 34, the internal heater 36 arranged at the center has better heating efficiency when heating the tobacco rod 11. Therefore, during the rest of the smoking period that satisfies the condition that the entire tobacco rod 11 is sufficiently heated up during the simultaneous heating period and is not prone to condensation of mist, the tobacco rod 11 is heated only by the internal heater 36 with good heating efficiency, and It can generate mist stably and continuously.

In addition, the controller 4 may control the temperature of the internal heater 36 from the power supply 5 to the internal heater 36 after the operation of the external heater 35 is stopped so that the temperature of the internal heater 36 increases more than before the operation of the external heater 35 is stopped. electricity supply. For example, the controller 4 may change the set temperature of the internal heater 36 from 250°C to 350°C. Internal heater 36 during internal heating The set temperature is preferably set to an appropriate temperature at which the mist generating substrate contained in the tobacco rod 11 can be volatilized stably and continuously only by heating by the internal heater 36. In addition, as described above, when the set temperature of the internal heater 36 is increased after the operation of the external heater 35 is stopped, the power consumption of the internal heater 36 increases, but the operation of the external heater 35 stops, Therefore, the total power consumption can be reduced.

Next, the controller 4 stops the supply of electric power from the power source 5 to the internal heater 36 after the elapsed time after the heating start time point (time T0) has passed the predetermined smoking time (heating stop time point).

Figures 9 to 12 are temperature measurement tests that measure the surface temperature of the external heater 35, the surface temperature of the internal heater 36, and the change in the product temperature of the tobacco rod 11 when the controller 4 is used for heating control of the heater 3 Schematic representation of the result. FIG. 13 is a schematic diagram of the position where the product temperature of the tobacco rod 11 is measured.

In the temperature measurement test, the product temperature of the tobacco rod 11 was measured at the temperature from the first measurement position MP1 to the third measurement position MP3 shown in FIG. 13. The distance from each measurement position MP1 to MP3 in the radial direction of the storage groove 34 to the side circumferential surface of the storage groove 34 (the inner circumferential surface 32a of the groove side circumferential wall 32) is set to 1.5 mm. In addition, the distance between each measurement position MP1 to MP3 in the radial direction of the storage groove 34 and the base end portion 36a of the internal heater 36 is set to 1.5 mm.

As shown in FIG. 13, the first measurement position MP1 to the third measurement position MP3 are arranged in the order of the first measurement position MP1, the second measurement position MP2, and the third measurement position MP3 from the groove bottom 331 side. In the direction of the central axis CL1 of the storage groove 34, the distance between the groove bottom portion 331 and the first measurement position MP1 is set to 2 mm. In addition, the distance between the first measurement position MP1 and the second measurement position MP2 is 5 mm. Also, the second measurement position MP2 is The partition size of the third measurement position MP3 is 6 mm. In addition, the distance between the third measurement position MP3 and the rear end position P1 of the tobacco rod during storage is set to 2 mm. In heating control, the elapsed time from the heating start time to the internal heater activation time is set to 6 seconds, and the elapsed time from the heating start time to the external heating stop time is set to 20 seconds, The elapsed time from the heating start time to the heating stop time was set to 420 seconds.

In addition, in Figs. 10 to 12, the temperature changes indicated by solid lines show the temperature changes at the measurement positions MP1 to MP3 in the heating control of the present embodiment described in Figs. 7 and 8. (Hereinafter referred to as "Examples"). In addition, the temperature change indicated by the broken line shows the temperature change of each measurement position MP1 to MP3 when the external heater is not used and only the internal heater 36 is used for heating control (hereinafter referred to as "comparative example"). In addition, the two-dot chain line shown in FIGS. 10 to 12 is the target product temperature when the tobacco rod 11 is heated. The target product temperature is 150°C, for example. As shown in Figs. 10 to 12, in the first measurement position MP1 and the second measurement position MP2 located at the position corresponding to the first region R1 of the groove-side peripheral wall 32, when heating control is performed, in the example and comparison There are no significant differences between the cases. The first measurement position MP1 and the second measurement position MP2 are separated from the external heater 35 by distances, and are relatively close to the internal heater 36, so they are less affected by the external heater 35. On the other hand, as shown in Figure 12, in the third measurement position MP3, there is a significant difference between the example and the comparative example. Compared with the comparative example, the example can be heated to the target product in a short time. It is warm, and the superiority of the examples over the comparative examples can be confirmed.

As described above, the non-combustion heating type smoking device 1 according to the present embodiment is provided with an internal heater for volatilizing the mist generating base material by heating the tobacco rod 11 from the inside, which is arranged in the storage tank 34 36; and arranged on the side circumference of the receiving groove 34, and at least The external heater 35 preheats the outer peripheral portion of the tobacco rod 11 during the preheating of the tobacco rod 11 to suppress the condensation of mist that occurs when the internal heater 36 operates. Thereby, the outer peripheral portion of the tobacco rod 11, which is not easily accessible from the internal heater and is easily affected by external air (heat loss) during the preheating period by the external heater, can be heated sufficiently. Thereby, it is possible to suppress condensation of mist that occurs when the internal heater 36 is operated. Therefore, the amount of mist delivered during smoking can be sufficiently ensured, and the sense of smoke volume can be improved.

In addition, in the above-mentioned embodiment, the first region R1 including the base end 32c for the groove bottom 331 and the third region R3 including the insertion port 38 of the groove side peripheral wall 32 (side peripheral portion) are not provided with an external heater 35, but the external heater 35 is arranged in the second region R2 on the side of the insertion port 38 than the first region R1. Therefore, the external heater 35 can be used to intensively heat the outer peripheral portion of the tobacco rod 11, especially the base end Side area. Thereby, the mist generated on the front end side (upstream side) of the tobacco rod 11 can be effectively suppressed from condensing on the proximal end side (downstream side) of the tobacco rod 11.

In particular, the internal heater 36 of the present embodiment has a tapered shape that decreases in diameter from the base end 36a side toward the front end 36b side. Therefore, the front end 36b of the internal heater 36 is more important to the tobacco rod 11 than the base end side. The amount of heat dissipation will be reduced, but by arranging the external heater 35 around the front end 36b of the internal heater 36 (corresponding to the position of the front end 36b of the internal heater 36), the front end of the internal heater 36 can be appropriately supplemented Insufficient heat dissipation of section 36b. In addition, the external heater 35 is not arranged in the first region R1 where the amount of heat dissipation from the internal heater 36 can be sufficiently ensured. Therefore, the external heater 35 can efficiently heat the tobacco rods while suppressing the power consumption of the power supply 5. The base end region of the outer periphery of 11.

Furthermore, in the present embodiment, the external heater 35 is not arranged in the third region R3 of the groove side peripheral wall 32 (side peripheral portion). Therefore, when the external heater 35 is operated, the For example, the filter part of the front end of the suction port 12 is scorched or dissolved by the heat of the external heater 35.

In addition, in this embodiment, an example in which the shape of the internal heater 36 is a truncated cone shape has been described. However, the internal heater 36 having a tapered shape from the groove bottom 331 side toward the insertion port 38 side can be used in this way. The internal heater 36 easily penetrates the filler 111 of the tobacco rod 11 inserted into the receiving groove 34. In addition, in a state where the internal heater 36 penetrates the filler 111, the contact state between the internal heater 36 and the filler 111 can be maintained well. As a result, the heat generated by the internal heater 36 can be easily transmitted to the filling 111, and the heating efficiency of the filling 111 can be improved. In addition, in this embodiment, the internal heater 36 is penetrated into the filler 111 of the tobacco rod 11 inserted into the storage groove 34, but the internal heater 36 may be inserted on the front end side (upstream side) of the tobacco rod 11 It is formed in the concave portion of the end surface of the filler 111.

In addition, the internal heater 36 can take various shapes. For example, the internal heater 36 may have a tapered shape or a truncated cone shape, and may have a tapered shape from the groove bottom 331 side toward the insertion port 38 side. For example, instead of a truncated cone shape, it may be a cone shape. In addition, the internal heater 36 may have a cylindrical shape. In this case, a conical part may be formed on the tip side of the cylindrical part of the internal heater 36. In addition, the internal heater 36 may have n-fold symmetry with respect to the central axis CL1 of the storage tank 34, and n is an integer of 3 or more.

In the example shown in Fig. 5, the front end 36b of the internal heater 36 in the heater 3 is arranged at the front end (on the side of the insertion port 38) of the second region R2 corresponding to the groove side peripheral wall 32 (side peripheral portion). The position of the end) is not limited to this. For example, as in the modification shown in FIG. 14, the front end portion 36b of the internal heater 36 may be arranged at a position corresponding to the middle portion of the second region R2. Also, as in the modification shown in FIG. 15, the tip portion 36b of the internal heater 36 may be equipped It is placed at a position corresponding to the third region R3. Moreover, as in the modification shown in FIG. 16, the front end 36b of the internal heater 36 may be arranged at a position corresponding to the first region R1.

The embodiments and modifications of the present invention have been described above, but the non-combustion heating type smoking device of the present invention is not limited to these, and these can be combined as much as possible.

3‧‧‧Heater

31‧‧‧The heater shell

32, 332‧‧‧ groove side wall

32a‧‧‧Inner peripheral surface

32b‧‧‧Outer peripheral surface

32c‧‧‧Base end

33‧‧‧Heat-resistant cup

34‧‧‧Containment slot

35‧‧‧External heater

35a‧‧‧Heating surface

36‧‧‧Internal heater

36a‧‧‧Base end

36b‧‧‧Front end

37‧‧‧Air Insulation Department

38‧‧‧Insertion port

311‧‧‧Bottom

312‧‧‧Outer cylinder wall

313‧‧‧Thick Wall

331‧‧‧Slot bottom

332a‧‧‧Inner peripheral surface

CL1‧‧‧Central axis

P1‧‧‧The position of the rear end of the tobacco rod during containment

R1‧‧‧Region 1

R2‧‧‧Region 2

R3‧‧‧Region 3

Claims (13)

A non-combustion heating type smoking device is provided with: a containing groove for containing tobacco rods containing tobacco shreds and a mist generating substrate; an internal heater is arranged in the aforementioned containing groove and used to penetrate and be inserted into the aforementioned The tobacco rod of the receiving groove is inserted into a recess formed on the end surface of the tobacco rod, and the mist generating substrate is volatilized by heating the tobacco rod from the inside; and an external heater is arranged on the side periphery of the receiving groove By preheating the outer peripheral portion of the tobacco rod at least during the preheating period of the tobacco rod, the condensation of the mist that occurs when the internal heater is operated is suppressed. For example, the non-combustion heating type smoking device in the scope of patent application includes: a control unit for controlling the internal heater and the external heater, and the control unit operates on both the internal heater and the external heater During simultaneous heating, the temperature of the external heater is controlled to be higher than the temperature of the internal heater. According to the non-combustion heating type smoking device described in the second item of the scope of patent application, wherein the control unit is configured to use the external heater to preheat the tobacco rod after the elapsed time reaches a predetermined set time, or the external When the temperature of the heater reaches a predetermined set temperature, the operation of the external heater is stopped, but the operation of the aforementioned internal heater is continued. The non-combustion heating type smoking device described in claim 3, wherein the control unit makes the temperature of the internal heater higher than before the operation of the external heater is stopped after the operation of the external heater is stopped. For rising. The non-combustion heating type smoking device according to any one of the 2nd to 4th items of the scope of patent application, wherein the control unit starts the preheating of the tobacco rod by operating only the external heater In this preheating, the internal heater is activated after the external heater is activated. According to the non-combustion heating type smoking device described in the first item of the scope of patent application, the receiving slot has: an insertion port located on the front end side of the side peripheral portion and is opened in a way that the tobacco rod can be inserted The open end of the groove; and the bottom of the groove, which are located on the base end side of the side peripheral portion, the side peripheral portion has: a first region including the base end for the bottom of the groove; and adjacent to the first region In the second area on the side of the insertion port, the external heater is not arranged in the first area, but in the second area. The non-combustion heating type smoking device described in claim 6, wherein the external heater is arranged in a partial section or the entire section of the second region along the circumferential direction of the side peripheral portion over the entire circumference . The non-combustion heating type smoking device described in claim 6 or 7, wherein the internal heater has n-fold symmetry with respect to the central axis of the receiving tank, and n is an integer of 3 or more. The non-combustion heating type smoking device described in claim 6 or 7, wherein the internal heater has a cylindrical shape and a conical portion is formed on the front end side. The non-combustion heating type smoking device described in claim 6 or 7, wherein the internal heater has a cone shape or a frustum shape, and is tapered from the groove bottom side toward the insertion port side. According to the non-combustion heating type smoking device described in item 6 or 7 of the scope of patent application, the aforementioned internal heater has a conical shape or a truncated cone shape. According to the non-combustion heating type smoking device described in claim 6 or 7, wherein the side peripheral part further includes a third area adjacent to the second area and including the insertion port, in the third area The aforementioned external heater is not provided. The non-combustion heating type smoking device described in claim 12, wherein the position of the tip of the internal heater corresponds to the second area or the third area of the side peripheral portion.

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