Aerosol-forming device and aerosol-forming system comprising same

Abstract

An aerosol-forming device includes: a main body; an accommodating cylinder located in the main body for accommodating an aerosol-forming article; and a heating element for heating the aerosol-forming article to generate an aerosol. The accommodating cylinder includes a top opening into which the aerosol-forming article is insertable and a bottom wall opposite the top opening. The heating element includes a top end and a bottom end facing away from the top end. The bottom end of the heating element is higher than the bottom wall of the accommodating cylinder in vertical height.

What is claimed is: 
     
         1 . An aerosol-forming device, comprising:
 a main body;   an accommodating cylinder located in the main body configured to accommodate an aerosol-forming article; and   a heating element configured to heat the aerosol-forming article to generate an aerosol,   wherein the accommodating cylinder comprises a top opening into which the aerosol-forming article is insertable and a bottom wall opposite the top opening,   wherein the heating element comprises a top end and a bottom end facing away from the top end, and   wherein the bottom end of the heating element is higher than the bottom wall of the accommodating cylinder in vertical height.   
     
     
         2 . The aerosol-forming device of  claim 1 , wherein the heating element comprises a heating tube arranged separately from the accommodating cylinder, and
 wherein the heating tube and the accommodating cylinder jointly accommodate the aerosol-forming article.   
     
     
         3 . The aerosol-forming device of  claim 2 , wherein the heating tube is coaxially arranged in the accommodating cylinder, and
 wherein a bottom end of the heating tube is higher than the bottom wall of the accommodating cylinder in vertical height.   
     
     
         4 . The aerosol-forming device of  claim 3 , wherein the accommodating cylinder comprises a stepped tube as a whole, and an upper portion and a lower portion that are different in diameter,
 wherein a diameter of the upper portion is larger than a diameter of the lower portion,   wherein a top end of the lower portion is sleeved with the heating tube, and   wherein the upper portion encircles an outer side of the heating tube.   
     
     
         5 . The aerosol-forming device of  claim 2 , wherein the heating tube is coaxially arranged above the accommodating cylinder, and
 wherein a bottom end of the heating tube is higher than the top end of the accommodating cylinder in vertical height.   
     
     
         6 . The aerosol-forming device of  claim 1 , wherein the heating element and the accommodating cylinder are integrated, and
 wherein the heating element is a part of the accommodating cylinder.   
     
     
         7 . The aerosol-forming device of  claim 1 , wherein a guide tube configured to guide the aerosol-forming article is arranged at the top opening of the accommodating cylinder. 
     
     
         8 . The aerosol-forming device of  claim 1 , wherein the bottom wall of the accommodating cylinder at least partially seals an end surface on one side of an aerosol-forming substrate of the accommodated aerosol-forming article to prevent or reduce a gas from entering the aerosol-forming substrate from the end surface on one side of the aerosol-forming substrate. 
     
     
         9 . The aerosol-forming device of  claim 1 , wherein the heating element is peripherally wound with a coil configured to generate electromagnetic induction,
 wherein the heating element is configured to receive the electromagnetic induction generated by the coil to heat, and   wherein the heating element comprises an electromagnetic metal material.   
     
     
         10 . The aerosol-forming device of  claim 9 , wherein a thermal insulation structure is provided between the heating element and the coil, and
 wherein the thermal insulation structure and the heating element are arranged in a spaced manner.   
     
     
         11 . The aerosol-forming device of  claim 1 , wherein the heating element comprises an insulation tube, and
 wherein the heating element has a resistance heating wire on an inner surface and/or an outer surface thereof.   
     
     
         12 . An aerosol-forming system, comprising:
 the aerosol-forming device of  claim 1 ; and   an aerosol-forming article.   
     
     
         13 . The aerosol-forming system of  claim 12 , wherein the aerosol-forming article comprises a tight segment, an aerosol-forming substrate segment, an airway segment, and a filter segment,
 wherein the airway segment is located between the aerosol-forming substrate segment and the filter segment,   wherein the tight segment is located at one end of the aerosol-forming substrate segment away from the filter segment,   wherein the airway segment has an airflow channel axially penetrating the airway segment, and   wherein an axial air permeability of the tight segment is less than an axial air permeability of the aerosol-forming substrate segment.   
     
     
         14 . The aerosol-forming system of  claim 13 , wherein a bottom end of the heating element is higher than or flush with a connection between the tight segment and the aerosol-forming substrate segment in vertical height. 
     
     
         15 . The aerosol-forming system of  claim 13 , wherein the tight segment comprises at least one of a carbon fiber material, a metal membrane, and a ceramic or a high molecular material. 
     
     
         16 . The aerosol-forming system of  claim 13 , wherein a material of the tight segment is a same material as that of the aerosol-forming substrate segment, the material comprising an aerosol-forming material, and
 wherein a bulk density of the tight segment is higher than a bulk density of the aerosol-forming substrate segment.   
     
     
         17 . The aerosol-forming system of  claim 13 , wherein the airway segment is hollow and is provided with a side wall and a hollow cavity,
 wherein the hollow cavity comprises the airflow channel axially penetrating the airway segment, and   wherein the airway segment is cylindrical and comprises a cellulose acetate fiber material.   
     
     
         18 . The aerosol-forming system of  claim 13 , wherein a side flow hole penetrating the side wall is formed in the side wall of the airway segment, and
 wherein an axial position of the side flow hole is close to a position of the aerosol-forming substrate segment and is away from a position of the filter segment.   
     
     
         19 . The aerosol-forming system of  claim 13 , wherein the airway segment comprises a first airway segment close to the aerosol-forming substrate segment and a second airway segment close to the filter segment, and
 wherein a cross sectional area of the airflow channel of the first airway segment is smaller than or equal to or larger than a cross sectional area of the airflow channel of the second airway segment.   
     
     
         20 . The aerosol-forming system of  claim 13 , wherein, when the aerosol-forming device comprises the electromagnetic heating device, the aerosol-forming substrate segment comprises a sheet metal arranged axially.