A smoking article

Abstract

The application discloses a smoking set, which has a containing cavity, a hot air forming cavity and an air inlet. The containing cavity is used for placing atomized particles. The air inlet, the hot air forming cavity and the containing cavity are sequentially communicated. The smoking set comprises a gas passing part and a heating assembly. The gas passing part has a gas passing hole which is communicated with the containing cavity and the hot air forming cavity. The heating assembly comprises a heating pipe and a heating part. The heating pipe extends upward and downward. The heating pipe is arranged in the hot air forming cavity and is provided with a spiral structure. The spiral structure divides the hot air forming cavity into a spiral flow guide channel which extends circumferentially around the heating pipe and upward. The spiral structure comprises a first spiral section and a second spiral section which are arranged upward and downward. The pitch of the first spiral section is smaller than the pitch of the second spiral section. The heating part is arranged around the heating pipe and extends along the spiral flow guide channel. The heating part can heat air in the spiral flow guide channel when being electrified. The smoking set provided by the application can reduce the energy consumption of air heating type smoking sets.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic cigarette heating, in particular to a low-energy-consumption air heating non-combustion smoking set. BACKGROUND

[0002] The main heating methods of the existing non-combustion smoking set are the middle heating method of needle insertion and the circumferential heating of providing heat source by setting heating line on the heating cup, both of which have the problem of uneven heating of high middle temperature or high peripheral heating temperature, resulting in uneven heating of the cigarette.

[0003] The existing technology adopts the air heating method to avoid the above-mentioned problem of uneven heating of the cigarette, and the air heating can achieve uniform heating effect by allowing the heated air to flow into the cigarette, but in the transmission process of the hot air flow formed after air heating flowing into the cigarette, when the transmission distance is longer, the heat carried by the hot air flow will be lost to other substances or places in contact with it, and the heat carried by the hot air flow cannot be transmitted to the cigarette as much as possible, so there is often a lot of heat loss and heat loss, resulting in the problem of high energy consumption of the existing smoking set adopting air heating technology. SUMMARY

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present application is to provide a smoking set and electronic smoking set to solve the problem of high energy consumption in the existing smoking set adopting air heating technology.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] The present application provides a smoking set having a containing cavity, a hot gas forming cavity and an air inlet, the containing cavity is used for placing atomized particles, the air inlet, the hot gas forming cavity and the containing cavity are sequentially communicated, characterized in that it comprises:

[0007] A gas passing member having a gas passing hole communicating the containing cavity and the hot gas forming cavity;

[0008] A heating assembly comprising a heating pipe and a heating member, the heating pipe extends upward and downward, the heating pipe is arranged in the hot gas forming cavity and provided with a spiral structure, the spiral structure divides the hot gas forming cavity to form a spiral flow guide channel extending circumferentially around the heating pipe and upwardly, the spiral structure comprises a first spiral section and a second spiral section arranged upward and downward, the pitch of the first spiral section is smaller than the pitch of the second spiral section;

[0009] The heating member is arranged around the heating pipe and extends along the spiral flow guide channel, and the heating member can heat the air in the spiral flow guide channel when energized.

[0010] In an embodiment, the first helical section has a first pitch angle at the connection point with the heating pipe, and the second helical section has a second pitch angle at the connection point with the heating pipe, the first pitch angle being smaller than the second pitch angle.

[0011] In an embodiment, the first helical section has a first pitch angle at the connection point with the heating pipe, the first pitch angle decreasing upwardly; and / or, the second helical section has a second pitch angle at the connection point with the heating pipe, the second pitch angle decreasing upwardly.

[0012] In an embodiment, the heating pipe is provided with a groove along the helical flow channel for accommodating the heating element.

[0013] In an embodiment, the heating pipe is provided with a protrusion in the shape of a sharp cone, the protrusion extending through the air passing element to the accommodating cavity.

[0014] In an embodiment, the inner wall of the heating pipe forms a through hole extending upwardly and downwardly, the heating pipe is provided with a side hole on the side wall of the end close to the accommodating cavity, the side hole being in communication with the through hole, one end of the heating element extending into the through hole from the side hole, and being connected to the first wire extending into the through hole from the air inlet.

[0015] The heating element is wound around the other end of the outer wall of the heating pipe, and is connected to the second wire extending into the hot air forming cavity from the air inlet.

[0016] In an embodiment, the heating assembly is provided with a plurality of heating assemblies arranged at intervals.

[0017] In an embodiment, the heating elements of the plurality of heating assemblies are connected in parallel.

[0018] In an embodiment, a cylindrical structure body is provided with a plurality of assembly holes, each of the assembly holes forming an independent hot air forming cavity, and each of the heating assemblies is accommodated in one of the assembly holes.

[0019] In an embodiment, the plurality of heating assemblies are arranged in concentric circles around the circumferential direction of the central axis of the cylindrical structure body.

[0020] In an embodiment, the distance between the adjacent two heating assemblies in the same layer increases from the center outwardly.

[0021] In an embodiment, among the plurality of heating assemblies, one heating assembly is located at the central axis, and the other heating assemblies are arranged in concentric circles around the central axis.

[0022] The smoking device provided by the present invention provides a spiral structure on the outer wall of the heating tube, and utilizes the spiral structure to divide the hot air forming cavity into a spiral guide channel that extends circumferentially around the heating tube and upward, and at the same time divides the spiral structure into a first spiral section and a second spiral section, and the pitch of the first spiral section is made smaller than that of the second spiral section, so that the heating element is extended and wound more densely along the spiral guide channel near the first spiral section that is closer to the accommodating cavity, so that the heating element first preliminarily heats the air in the hot air forming cavity away from the accommodating cavity, and then mainly heats the air when the air flows close to the accommodating cavity, and then the air that has undergone the main heating is transferred to the accommodating cavity through a shorter distance, and finally the air transfers the heat to the atomized particles in the accommodating cavity. By shortening the distance that the hot air flow that has undergone the main heating is transferred to the atomized particles, the heat loss and heat loss of the hot air flow during the transfer process are minimized as much as possible, so that the heat is mainly used to heat the atomized particles, thereby achieving improved thermal utilization and reduced energy consumption of the air-heating smoking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the smoking device of the present invention;

[0024] Figure 2 yes Figure 1 Front cross-sectional structural diagram of the smoking device;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the heating component;

[0026] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure after removing the side wall of the shell;

[0027] Figure 5 It is a front view three-dimensional structural schematic diagram of a smoking device provided with multiple heating components in another embodiment of the present invention.

[0028] Figure 6 yes Figure 5 Schematic diagram of the three-dimensional structure after removing the side wall of the shell;

[0029] Figure 7 yes Figure 6 Schematic diagram of the three-dimensional structure after removing the second tube;

[0030] Figure 8 yes Figure 7 Schematic diagram of the three-dimensional structure of the cylindrical structure, multiple heating components and gas flow parts;

[0031] Figure 9 yes Figure 7 Schematic diagram of the three-dimensional structure after removing the cylindrical structure;

[0032] Figure 10 yes Figure 7Figure 6 is a partial enlarged perspective view of the heating assembly, the air passing member, the first electrode plate and the second electrode plate in the cigarette device;

[0033] Figure 11 Figure 7 is a perspective view of the cylindrical structure and the plurality of heating assemblies in the cigarette device; Figure 7

[0034] Figure 12 Figure 8 is a top plan view of the cylindrical structure in the cigarette device; Figure 11

[0035] Figure 13 Figure 9 is a front plan view of the cylindrical structure in the cigarette device. Figure 7

[0036] Figure 14 Figure 10 is a sectional view of the cylindrical structure along the A-A direction in the cigarette device. Figure 13

[0037] Figure 11 is a schematic view of the cigarette device;

[0038] Figure 12 is a schematic view of the cigarette device;

[0039] Figure 13 is a schematic view of the cigarette device;

[0040] Figure 14 is a schematic view of the cigarette device;

[0041] Figure 15 is a schematic view of the cigarette device;

[0042] Figure 16 is a schematic view of the cigarette device;

[0043] Figure 17 is a schematic view of the cigarette device;

[0044] Figure 18 is a schematic view of the cigarette device;

[0045] Figure 19 is a schematic view of the cigarette device. DETAILED DESCRIPTION

[0046] Specific embodiments of the present application will be described in detail with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the description of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0047] ​​​​In the description of the application, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium. The specific meanings of the above terms can be understood according to the specific circumstances by those of ordinary skill in the art.

[0048] The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, and are only for the convenience of description and simplification of the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0049] The terms "first", "second", "third" and the like are only for distinguishing similar attributes of elements, and do not indicate or imply relative importance or a particular order.

[0050] The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, in addition to including the listed elements, other elements not explicitly listed can also be included.

[0051] Please refer to Figures 1 to 3 The smoking set 1 provided in the embodiment has a containing cavity 201, a hot gas forming cavity 101 and an air inlet 102. The containing cavity 201 is used to place atomized particles. The air inlet 102, the hot gas forming cavity 101 and the containing cavity 201 are sequentially communicated.

[0052] The smoking set 1 comprises an air passing member 40 and a heating assembly 30.

[0053] The air passing member 40 has an air passing hole 401 which communicates the containing cavity 201 and the hot gas forming cavity 101.

[0054] The heating assembly 30 comprises a heating pipe 31 and a heating member 33. The heating pipe 31 extends upward and downward. The heating pipe 31 is arranged in the hot gas forming cavity 101 and is provided with a spiral structure 32. The spiral structure 32 divides the hot gas forming cavity 101 to form a spiral flow guide channel 37. The spiral structure 32 comprises a first spiral section 321 and a second spiral section 322 arranged upward and downward. The pitch of the first spiral section 321 is smaller than the pitch of the second spiral section 322.

[0055] The heating member 33 is arranged around the heating pipe 31 and extends along the spiral flow guide channel 37. When the heating member 33 is electrified, it can heat the air in the spiral flow guide channel 37.

[0056] In the embodiment, the heating element 33 is wound more densely closer to the first spiral section 321 of the accommodating cavity 201, and is set more sparsely farther from the accommodating cavity 201, so that the air in the hot air forming cavity 101 is preliminarily heated, and then the air after the preliminary heating is set more densely closer to the accommodating cavity 201, so that the air is mainly heated, and then the air after the main heating is transmitted to the accommodating cavity 201, so that heat is transmitted to the atomized particles in the accommodating cavity 201, thereby shortening the distance of the hot air flow mainly used for heating the atomized particles to the atomized particles, reducing heat loss and heat consumption of the hot air flow as much as possible during transmission, and achieving improvement of heat utilization and reduction of energy consumption.

[0057] Specifically, as shown in Figure 2 In the embodiment, the smoking set 1 further comprises a first tube body 10 and a second tube body 20, the first tube body 10 and the second tube body 20 are connected, the first tube body 10 wraps the heating tube 31, the first tube body 10 forms the hot air forming cavity 101 inside, the second tube body 20 forms the accommodating cavity 201 inside, and the air passing element 40 is clamped between the first tube body 10 and the second tube body 20. The height of the first tube body 10 and the second tube body 20 is set to limit the position of the air passing element 40 and determine the space ratio of the accommodating cavity 201 and the hot air forming cavity 101.

[0058] Specifically, the integral setting refers to being integrally machined from the same material or being fixedly connected as a whole, and the first tube body 10 and the second tube body 20 are set as a whole, which can save the manufacturing cost of the two. In other embodiments, when the first tube body 10 and the second heating section 20 are not set as a whole, the first tube body 10 and the second tube body 20 can be respectively improved and set differently, and at this time, the first tube body 10 and the second tube body 20 can be connected by sleeving or fixedly connected by welding.

[0059] In addition, as shown in Figure 2 and Figure 4 In the embodiment, the smoking set 1 further comprises a housing 60, a circuit board, and a battery, the housing 60 comprises a cover plate 601 and a base, the cover plate 601 is provided with an opening 202 for discharging air and putting atomized particles into the accommodating cavity 201, the base 602 is provided with an air inlet 102 and serves as a support, the housing 60 wraps the circuit board 70 and the battery 80, and the battery 80 and the circuit board 70 are connected to the heating element 33 by the wire 34 for power supply.

[0060] Specifically, in this embodiment, the specific working process of the smoking device 1 is as follows: the battery 80 supplies power, and the heating element 33 is energized through the circuit board 70 and the wire 33. The air enters the hot air forming chamber 101 inside the first tube body 10 from the bottom along the air inlet 102, and then rises along the spiral guide channel 37. After the heating element 33 is energized, the air that rises to the bottom of the spiral guide channel 37, which is relatively far away from the accommodating chamber 201, is preliminarily heated, and then the air that rises to the top of the spiral guide channel 37, which is relatively close to the accommodating chamber 201, is mainly heated. After being heated by the heating element 33, the air becomes a hot air flow. After the main heating at the top of the spiral guide channel 37, the hot air flow enters the accommodating chamber 201 from the upper part of the hot air forming chamber 101 along a shorter path through the air hole 401, and heats the atomized particles that were previously placed in the accommodating chamber 201 from the opening 202.

[0061] Specifically, the atomized particles in this embodiment can be tobacco materials, herbal materials, medicinal materials or other materials that can be heated to generate aerosols.

[0062] like Figure 3 As shown, as an embodiment, the first spiral segment 321 has the same rise angle at the connection point with the heating tube 31, which is the first rise angle, and the second spiral segment 322 has the same rise angle at the connection point with the heating tube 31, which is the second rise angle, and the first rise angle is smaller than the second rise angle.

[0063] In this embodiment, the first spiral segment 321 has the same first rise angle at the connection point with the heating tube 31, and the second spiral segment 322 has the same second rise angle at the connection point with the heating tube 31, and the first rise angle is smaller than the second rise angle.

[0064] At this time, because the pitch of the first spiral segment 321 is smaller than the pitch of the second spiral segment 322, the gap of the first spiral segment 321 on the outer wall of the heating tube 31 is smaller than the gap of the second spiral segment 322 on the outer wall of the heating tube 31, and the heating element 33 is wound around the outer wall of the heating tube along the gap between the first spiral segment 321 and the second spiral segment 322. When the number of windings in each gap is equal, within the same axial range, the gap along the first spiral segment 321 on the outer wall of the heating tube 31 is wound more densely than the gap along the second spiral segment 321 on the outer wall of the heating tube 31, thereby achieving the purpose of making the heating element 33 more concentratedly distributed near the accommodating chamber 201, so as to heat the atomized particles in the accommodating chamber 201 faster and more concentratedly, and achieve the technical effect of shortening the main heat transfer distance to reduce heat loss and heat dissipation.

[0065] In other embodiments, the first helical section 321 has a first rise angle at the connection point with the heating pipe 33, and the first rise angle decreases upwardly; and / or, the second helical section 322 has a second rise angle at the connection point with the heating pipe 33, and the second rise angle decreases upwardly. Different from the original embodiment, the first helical section 321 and the second helical section 322 are narrower in the gap of the outer wall of the heating pipe 31, and the heating element 33 is more densely wound along the narrower gap, further concentrating the heating element 33 in the direction of the accommodation cavity 201, and further enhancing the technical effect of shortening the main heat transfer path to reduce heat loss and heat consumption.

[0066] In other embodiments, the number of windings of the heating element 33 can also be increased from bottom to top to shorten the main heat transfer path of the aerosol particles in the accommodation cavity, and can be applied simultaneously with the original embodiment to further enhance the original technical effect.

[0067] As an embodiment, the heating pipe 31 is provided with a groove for accommodating the heating element 33 along the spiral flow guide channel 37.

[0068] Specifically, by arranging a spiral groove on the outer wall of the heating pipe 31 along the spiral flow guide channel 37, the heating element 33 can be installed to fix and limit the heating element 33.

[0069] As shown in Figure 8 and Figure 10 As an embodiment, the heating pipe 31 is provided with a protrusion 36 in the shape of a sharp cone, and the protrusion 36 extends to the accommodation cavity 201 through the air hole 401.

[0070] Specifically, the protrusion 36 in the shape of a sharp cone is arranged on the end face of the heating pipe 31 close to the accommodation cavity, and is fixed on the end face by welding or other methods. Specifically, by arranging the protrusion 36 in the shape of a sharp cone, the heat carried by the hot gas flow in the cavity 101 is concentrated and rapidly transferred to the aerosol particles in the accommodation cavity 201 by using the sharp end heat effect.

[0071] As shown in Figure 10 The air hole 40 includes a first air hole 4011 with a large hole diameter for the protrusion 36 to pass through and extend to the accommodation cavity 201, and a second air hole 4012 with a small hole diameter for the hot gas flow to pass through and enter the accommodation cavity 201.

[0072] As shown in Figure 2As shown, as an embodiment, the heating pipe 31 is provided with a through hole 311 extending along the axial direction of the heating pipe 31 and penetrating through both ends of the heating pipe 31, and the side wall of the end of the heating pipe 31 close to the accommodating cavity 201 is provided with a side hole 312, which is connected with the through hole 311, and one end of the heating element 33 extends into the through hole 311 from the side hole 312 and is connected with the first wire 34 extending into the through hole 311 from the air inlet 102.

[0073] The other end of the heating element 33 is wound around the outer wall of the heating pipe 31 and is connected with the second wire 35 extending into the hot gas forming cavity 101 from the air inlet 102.

[0074] In this embodiment, the heating element 33 is wound along the spiral flow channel 37 from the bottom of the outer wall of the heating pipe 31 to the top of the outer wall of the heating pipe 31, and then extends into the through hole 311 of the heating pipe 31 through the side hole 312, one end of the heating element 33 is in the through hole of the heating pipe 31, and the other end is at the bottom of the outer wall of the heating pipe 31. The first wire 34 extends into the hot gas forming cavity 101 from the bottom of the first pipe body 10 and extends to the bottom of the outer wall of the heating pipe 31 to be connected with the other end of the heating element 33, and the second wire 35 extends into the through hole 311 from the bottom of the first pipe body 10 to be connected with one end of the heating element 33, so that the heating element 33 is connected with the power supply from the beginning end to the end end, and the heating element 33 can be heated as a whole when the battery 80 is powered.

[0075] As shown, Figures 5 to 14 As an embodiment, the heating assembly 30 is provided with a plurality of heating assemblies arranged at intervals.

[0076] In this embodiment, different from the original embodiment, a plurality of heating assemblies 30 are provided at the same time, which can achieve the heating effect of the first embodiment and improve the heating efficiency.

[0077] As shown, Figure 9 and Figures 10 As an embodiment, the heating elements 33 of the plurality of heating assemblies 30 are connected in parallel.

[0078] In this embodiment, the heating element 33 of each heating assembly 30 is connected to the first electrode plate 701 through the first wire 34, and is connected to the second electrode plate 702 through the second wire 35, and then is connected to the circuit board 70 through the first electrode plate 701 and the second electrode plate 702, and finally is connected to the battery 80 through the circuit board 70, so as to realize the parallel connection of the heating element 33 of each heating assembly 30 in the circuit, and enable the battery 80 to power each heating element 33 of each heating assembly 30 in the parallel circuit.

[0079] As shown, Figures 11 to 14As shown, as an embodiment, the smoking set 1 comprises a cylindrical structure 50 with a plurality of assembly holes 501, each assembly hole 501 forms an independent hot air forming cavity 101, and each heating assembly 30 is arranged in one assembly hole 501.

[0080] In this embodiment, different from the original embodiment, the originally hollow first pipe body 10 is replaced by a cylindrical structure 50 with a plurality of assembly holes 501, and each of the plurality of heating assemblies 30 is arranged in one assembly hole 501 to form an independent hot air forming cavity 101 in each assembly hole.

[0081] After the plurality of heating assemblies 30 are powered on, the air in the hot air forming cavities 101 in the assembly holes 501 where the heating assemblies 30 are located is independently heated, and the heated air is collectively gathered into the accommodation cavity 201 through the air holes 401 to heat the atomized particles in the accommodation cavity 201.

[0082] In this embodiment, each assembly hole 501 forms an independent hot air forming cavity 101, and each heating assembly 30 forms a spiral flow guide channel 37 in the independent hot air forming cavity 101, which not only achieves the technical effect of the original embodiment with a single heating assembly, but also enhances the heating effect on the atomized particles in the accommodation cavity 102 by gathering the independently heated air of each heating assembly 30.

[0083] In other embodiments, by arranging the power supply device such as the circuit board 70 and the battery 80, the single heating assembly 30 among the plurality of heating assemblies 30 can be controlled to be powered on and off independently, so as to control the single heating assembly or the plurality of heating assemblies 30 to work together, thereby heating the atomized particles in a certain specific area.

[0084] For example, by controlling the heating assembly 30 in the central area to be powered on and heated first, when the particles in the central area are exhausted, the surrounding heating assemblies 30 are controlled to be powered on and heated, thereby achieving a more reasonable and balanced heating effect.

[0085] For another example, by controlling the heating assemblies in a certain area to be powered on and heated together, or by preheating the heating assemblies in the remaining areas first, the energy consumption can be saved by precisely heating the atomized particles.

[0086] For example, Figure 11 As an embodiment, the plurality of heating assemblies 30 are arranged in a concentric circle around the central axis of the cylindrical structure 50.

[0087] Specifically, by arranging the assembly holes 501 in a concentric circle around the circumferential direction of the center axis of the cylindrical structure, all the heating assemblies 30 are arranged in a concentric circle around the circumferential direction of the center axis of the cylindrical structure, and the heating assemblies 30 are evenly distributed, so that the hot air formed after heating of each heating assembly 30 is evenly gathered to the accommodation cavity 102, thereby achieving the effect of evenly heating the atomized particles in the accommodation cavity 102.

[0088] In other embodiments, the plurality of heating assemblies 30 can be arranged in other uniform intervals, such as a rectangular lattice or a triangular lattice.

[0089] The smoking set 1 provided by the present application divides the hot air forming cavity 101 into a spiral flow guide channel 37 extending around the heating pipe and upward by arranging the spiral structure 32 on the outer wall of the heating pipe 31, and divides the spiral structure 32 into a first spiral section 321 and a second spiral section 322, and the pitch of the first spiral section 321 is smaller than that of the second spiral section 322, so that the heating element 33 is more densely wound around the first spiral section 321 closer to the accommodation cavity 201 along the spiral flow guide channel 37, so that the heating element 33 first preliminarily heats the air in the hot air forming cavity away from the accommodation cavity 201, then mainly heats the air when it flows close to the accommodation cavity 201, then makes the air mainly heated pass through a shorter distance to the accommodation cavity 201, and finally the air transmits heat to the atomized particles in the accommodation cavity 201, thereby reducing heat loss and heat consumption of the hot air stream in the transmission process as much as possible, so that heat is mainly used for heating the atomized particles, and the heat utilization rate of the air heating type smoking set is improved and the energy consumption is reduced; in addition, multiple heating assemblies 30 can be arranged to heat the air at the same time to improve the heating effect and the heating efficiency.

[0090] It should be noted that each embodiment in the present specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0091] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any changes or replacements within the technical range disclosed by the present application can be easily thought of by those skilled in the art, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A smoking set having a holding cavity for holding atomized particles, a hot air forming cavity, and an air inlet, the air inlet, the hot air forming cavity, and the holding cavity being sequentially communicated, characterized in that, The utility model relates to a hot air forming device, comprising: a through air member having a through air hole communicating with the accommodating cavity and the hot air forming cavity; a heating assembly, the heating assembly comprising a heating pipe and a heating member, the heating pipe extending upward and downward, the heating pipe being arranged in the hot air forming cavity and being provided with a spiral structure, the spiral structure dividing the hot air forming cavity to form a spiral flow channel extending circumferentially around the heating pipe and upwardly, the spiral structure comprising a first spiral section and a second spiral section arranged upward and downward, the pitch of the first spiral section being smaller than the pitch of the second spiral section; the heating member being arranged around the heating pipe and extending along the spiral flow channel, the heating member being capable of heating air in the spiral flow channel when energized; the heating member extending and winding more densely around the first spiral section closer to the accommodating cavity along the spiral flow channel.

2. The smoking set of claim 1, wherein the first spiral section has a first rise angle at the connection point with the heating pipe, and the second spiral section has a second rise angle at the connection point with the heating pipe, the first rise angle being smaller than the second rise angle.

3. The smoking set of claim 1, wherein the first spiral section has a first rise angle at the connection point with the heating pipe, and the first rise angle decreases upwardly; and / or, the second spiral section has a second rise angle at the connection point with the heating pipe, and the second rise angle decreases upwardly.

4. The smoking set of claim 1, wherein the heating pipe is provided with a groove along the spiral flow channel for accommodating the heating member.

5. The smoking set of claim 1, wherein the heating pipe is provided with a protrusion in the shape of a sharp cone, the protrusion extending through the through air member to the accommodating cavity.

6. The smoking set of claim 1, wherein an inner tube wall of the heating pipe encloses a through hole extending upward and downward, a side hole is formed in the side wall of the end of the heating pipe close to the accommodating cavity, the side hole and the through hole are in communication, one end of the heating member extends into the through hole from the side hole, and the other end of the heating member is connected to a second lead wire extending into the hot air forming cavity from the air inlet; the heating member is wound around the other end of the outer wall of the heating pipe and is connected to a second lead wire extending into the hot air forming cavity from the air inlet.

7. The smoking set of any one of claims 1 to 6, wherein the heating assembly is provided with a plurality of heating assemblies arranged at intervals.

8. The smoking set of claim 7, wherein the heating members of the plurality of heating assemblies are connected in parallel.

9. The smoking set of claim 7, wherein the utility model relates to a hot air forming device, comprising a cylindrical structure body having a plurality of assembly holes, each of the assembly holes forming an independent hot air forming cavity, and each of the heating assemblies being arranged in one of the assembly holes.

10. The smoking article of claim 9, wherein, the plurality of heating assemblies are arranged in concentric circles around the circumferential direction of the central axis of the cylindrical structure body.

11. The smoking article of claim 7, wherein the distance between two adjacent heating assemblies in the same circle layer increases from the center outwardly.

12. The smoking article of claim 10, wherein, one of the plurality of heating assemblies is arranged at the central axis, and the other heating assemblies are arranged in concentric circles around the central axis.

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