Closed heat-not-burn cigarette
A closed heat-not-burn cigarette and an assembly. The assembly comprises a closed heat-not-burn cigarette ( 1 ) and a heating smoking set ( 2 ), wherein when in use, the closed heat-not-burn cigarette ( 1 ) is inserted into the heating smoking set ( 2 ) where the cigarette is heated for smoking. The closed heat-not-burn cigarette ( 1 ) comprises a tobacco rod ( 1 - 1 ), a hollow smoke extraction cone ( 1 - 2 ), a smoke transmission pipe ( 1 - 3 ) and a filter tip ( 1 - 4 ), which are sequentially connect to each other in an abutting manner and are wrapped in an external rolling connection material ( 1 - 5 ), at least one through hole ( 1 - 3 - 1 ) is provided in a side wall of the smoke transmission pipe ( 1 - 3 ), and the through hole ( 1 - 3 - 1 ) penetrates the external rolling connection material ( 1 - 5 ); the heating smoking set ( 2 ) comprises a heating section ( 2 - 1 ), a cap ( 2 - 3 ) and a sealing ring ( 2 - 2 ), the heating section ( 2 - 1 ) being internally provided with a cigarette accommodating cavity ( 2 - 1 - 1 ) and a heating element ( 2 - 1 - 2 ), and the inner cavity of the cap ( 2 - 3 ) being of a gradually-expanded structure. Air does not flow through a tobacco section, thereby reducing the oxygen content of the tobacco section; a closed structured is used, thereby preventing tobacco residues from falling off; and aroma components in the tobacco are released more fully, such that the taste is closer to that of traditional tobaccos.
1 . A closed heat-not-burn cigarette, characterized in that: said closed heat-not-burn cigarette comprises a tobacco rod, a hollow smoke extraction cone, a smoke transmission pipe, a functional filter tip and an external rolling connection material;
said tobacco rod, said hollow smoke extraction cone, said smoke transmission pipe, and said functional filter tip are sequentially connected to each other in an abutting manner and wrapped by said external rolling connection material;
a circumference and/or an upstream end surface of the tobacco rod are/is wrapped by a paper-based material or a foil-based material with air impermeability or controllable air permeability to form a closed structure;
said hollow smoke extraction cone comprises a cylindrical base and a tapered cone, and is provided with a tapered cavity; said tapered cone is provided with a taper hole on the top and/or the side wall thereof, and the number of the taper holes is at least one;
a circumferential side wall of the smoke transmission pipe is provided with at least one through hole which penetrates through the external rolling connection material, and an axial distance from the at least one through hole to a bottom surface of the cone is smaller than an axial distance from the taper hole to the bottom surface of the tapered cone; and
a plug-in sealing structure is arranged between the hollow smoke extraction cone and the smoke transmission pipe.
2 . The closed heat-not-burn cigarette according to claim 1 , characterized in that said tobacco rod comprises tobacco shreds, tobacco sheets, tobacco particles, tobacco extrusion forms or tobacco-containing gels.
3 . The closed heat-not-burn cigarette according to claim 1 , characterized in that the external rolling connection material comprises ordinary cigarette paper, tipping paper, or a heat-resistant and air-impermeable thin material.
4 . The closed heat-not-burn cigarette according to claim 1 , characterized in that an aperture of the at least one through hole on the smoke transmission pipe is inversely proportional to the number of through holes.
5 . A closed heat-not-burn cigarette assembly characterized in that said closed heat-not-burn cigarette assembly comprises the closed heat-not-burn cigarette according to claim 1 and a closed heating smoking set.
6 . The closed heat-not-burn cigarette assembly according to claim 5 , characterized in that the closed heating smoking set comprises a heating section, and said heating section comprises a cigarette accommodating cavity.
7 . The closed heat-not-burn cigarette assembly according to claim 5 , characterized in that the closed heating smoking set further comprises a cap, the cap and the heating section are detachably connected to each other directly or by a sealing ring, and the cap has a gradually-expanded inner cavity.
8 . The closed heat-not-burn cigarette assembly according to claim 6 , characterized in that heating elements are provided at a circumferential side wall and/or a bottom surface within the cigarette accommodating cavity, and characterized in that when said closed heat-not-burn cigarette is inserted, the tobacco rod thereof is partially or completely wrapped by the circumferential side wall within the cigarette accommodating cavity.
9 . The closed heat-not-burn cigarette assembly according to claim 7 , characterized in that the gradually-expanded inner cavity of the cap has a truncated conical shape, the conical apex angle thereof is not more than 10 degrees, and an end of the cap with a smaller inner diameter is directly or indirectly detachably connected with the heating section.
10 . The closed heat-not-burn cigarette assembly according to claim 3 , characterized in that the external rolling connection material comprises Polytetrafluoroethylene (PTFE), Polyetheretherketone (PEEK) resin, or silica gel.