Aerosol-generating device

Abstract

An aerosol-generating device includes: a holder; a rotating assembly; a heating assembly; and a driving assembly. The rotating assembly, the heating assembly, and the driving assembly are mounted on the holder. The rotating assembly drives an aerosol-generating substrate to rotate, the aerosol-generating substrate including a plurality of substrate portions. The heating assembly corresponds to at least one substrate portion of the plurality of substrate portions, and the heating assembly heats a corresponding substrate portion to generate an aerosol. The driving assembly drives the rotating assembly and/or the heating assembly to rotate relative to the holder so as to switch the at least one substrate portion corresponding to the heating assembly.

What is claimed is: 
     
         1 . An aerosol-generating device, comprising:
 a holder;   a rotating assembly;   a heating assembly; and   a driving assembly,   wherein the rotating assembly, the heating assembly, and the driving assembly are mounted on the holder,   wherein the rotating assembly is configured to drive an aerosol-generating substrate to rotate, the aerosol-generating substrate comprising a plurality of substrate portions,   wherein the heating assembly corresponds to at least one substrate portion of the plurality of substrate portions, and the heating assembly is configured to heat a corresponding substrate portion to generate an aerosol, and   wherein the driving assembly is configured to drive the rotating assembly and/or the heating assembly to rotate relative to the holder so as to switch the at least one substrate portion corresponding to the heating assembly.   
     
     
         2 . The aerosol-generating device of  claim 1 , wherein the heating assembly is configured to emit a laser toward the corresponding substrate portion, and
 wherein the laser is configured to heat the substrate portion corresponding to the heating assembly.   
     
     
         3 . The aerosol-generating device of  claim 2 , wherein the aerosol-generating substrate is in a shape of a sheet, the aerosol-generating substrate is accommodated in the rotating assembly, and an exit direction of the laser emitted by the heating assembly is substantially consistent with a direction of a rotation axis of the rotating assembly, or
 wherein the aerosol-generating substrate is in a shape of a column, the aerosol-generating substrate is arranged inside the rotating assembly, and an exit direction of the laser is substantially perpendicular to a direction of the rotation axis of the rotating assembly.   
     
     
         4 . The aerosol-generating device of  claim 1 , wherein the rotating assembly comprises:
 a bearing disk mounted on a top of the holder; and   a bin cover mounted on a top of the bearing disk and jointly forming a storage bin with the bearing disk,   wherein the storage bin is configured to accommodate the aerosol-generating substrate, and   wherein a region of the bearing disk corresponding to the substrate portion comprises a light-transmitting region for a laser emitted by the heating assembly to pass through.   
     
     
         5 . The aerosol-generating device of  claim 4 , wherein the rotating assembly comprises:
 a bearing frame accommodated in the storage bin and fixed between the bearing disk and the bin cover,   wherein the bearing frame is configured to carry the aerosol-generating substrate so as to space apart the aerosol-generating substrate from a bottom of the bearing disk, and   wherein a region of the bearing frame corresponding to the substrate portion comprises the light-transmitting region for the laser to pass through.   
     
     
         6 . The aerosol-generating device of  claim 5 , wherein the bearing frame is provided with a plurality of bearing regions,
 wherein each bearing region of the plurality of bearing regions corresponds to one substrate portion,   wherein one cavity is formed between each substrate portion and the bearing disk, and   wherein the cavity is configured to accommodate an aerosol generated by the substrate portion.   
     
     
         7 . The aerosol-generating device of  claim 6 , further comprising:
 a mouthpiece, one end of the mouthpiece extending into the rotating assembly, and an other end of the mouthpiece being exposed from the rotating assembly,   wherein the aerosol-generating device is provided with an air inlet passage, and   wherein the mouthpiece, the rotating assembly, a side wall of a top of the holder, and the substrate portion corresponding to the heating assembly jointly form the air inlet passage.   
     
     
         8 . The aerosol-generating device of  claim 4 , wherein the rotating assembly comprises:
 a second sealing member sleeved on the bin cover,   wherein the second sealing member is located between the bearing disk and the bin cover so as to seal the gap between the bearing disk and the bin cover.   
     
     
         9 . The aerosol-generating device of  claim 8 , further comprising:
 a mouthpiece,   wherein the bin cover comprises:
 a bin cover plate comprising a first side and a second side opposite to each other, the bin cover plate extending into a first outer tube of the bearing disk, and the second sealing member being sleeved on an outer side of the bin cover plate and located between the first outer tube and the bin cover plate, 
 an annular flange portion extending outward from a first side of a periphery of the bin cover plate, the flange portion being supported by a top of the first outer tube, and 
 a sleeve portion extending through the first side of the bin cover plate and the second side of the bin cover plate, the flange portion surrounding the sleeve portion, a first inner tube of the bearing disk extending into the sleeve portion from a second side of the bin cover plate, one end of the mouthpiece extending into the sleeve portion from a first side of the bin cover plate, an other end being exposed from the sleeve portion, and an inner cavity of the mouthpiece is in communication with an inner cavity of the first inner tube. 
   
     
     
         10 . The aerosol-generating device of  claim 1 , wherein the rotating assembly is arranged at a top of the holder,
 wherein the heating assembly is located between the rotating assembly and a bottom of the holder, and   wherein the heating assembly comprises:
 a support accommodated in the holder, 
 a circuit board connected to the support, and 
 a laser chip mounted on the circuit board, the laser chip being configured to emit a laser. 
   
     
     
         11 . The aerosol-generating device of  claim 10 , wherein the heating assembly comprises a heat dissipation piece mounted in the holder, and
 wherein the heat dissipation piece is configured to dissipate heat for the circuit board and the laser chip.   
     
     
         12 . The aerosol-generating device of  claim 11 , wherein the heat dissipation piece comprises a heat dissipation block,
 wherein the circuit board is connected to the support through the heat dissipation block, and   wherein the heat dissipation block is configured to conduct heat generated by the laser chip to the support and the holder.   
     
     
         13 . The aerosol-generating device of  claim 1 , wherein the rotating assembly is arranged at a top of the holder,
 wherein the heating assembly is located between the rotating assembly and a bottom of the holder, and   wherein the driving assembly comprises:
 a driving member located between the heating assembly and a bottom of the holder, and 
 a connecting component inserted into the heating assembly, an output shaft of the driving member being connected to the heating assembly through the connecting component, the driving member being configured to drive the heating assembly to rotate relative to the holder. 
   
     
     
         14 . The aerosol-generating device of  claim 1 , wherein the rotating assembly is arranged at a top of the holder, and
 wherein the heating assembly is located between the rotating assembly and a bottom of the holder, and   wherein the driving assembly comprises:
 a driving member located between the heating assembly and a bottom of the holder, and 
 a connecting component inserted into the heating assembly, an output shaft of the driving member being connected to a bearing disk of the rotating assembly through the connecting component, the driving member being configured to drive the bearing disk to rotate relative to the holder. 
   
     
     
         15 . The aerosol-generating device of  claim 14 , wherein the holder comprises a first sub-holder and a second sub-holder mounted on a top of the first sub-holder,
 wherein a support of the heating assembly is fixedly connected to a heat dissipation piece of the heating assembly,   wherein the support and the heat dissipation piece jointly clamp the second sub-holder,   wherein the connecting component comprises:
 a connecting shaft extending through the second sub-holder and the heat dissipation piece, one end of the connecting shaft being connected to the output shaft of the driving member, 
 a shaft sleeve inserted into the bearing disk and sleeved on an other end of the connecting shaft, and 
 a connector fixedly connected to the shaft sleeve and an other end of the connecting shaft. 
   
     
     
         16 . The aerosol-generating device of  claim 14 , wherein the heating assembly is configured to heat an at least one substrate portion currently corresponding to the heating assembly when the aerosol-generating device is inhaled, and
 wherein, when the aerosol-generating device is stopped from being inhaled, the heating assembly is configured to stop heating the substrate portion currently corresponding to the heating assembly, and the driving assembly is configured to drive the rotating assembly and/or the heating assembly to rotate relative to the holder so as to switch the at least one substrate portion corresponding to the heating assembly.   
     
     
         17 . The aerosol-generating device of  claim 1 , further comprising:
 an airflow detection assembly mounted on the heating assembly,   wherein the airflow detection assembly is configured to detect whether the aerosol-generating device is inhaled.   
     
     
         18 . The aerosol-generating device of  claim 17 , further comprising:
 a mouthpiece passing through the rotating assembly,   wherein the mouthpiece, the rotating assembly, and the airflow detection assembly jointly form a detection airway, and   wherein the airflow detection assembly is configured to determine whether the aerosol-generating device is inhaled based on an air pressure in the detection airway.   
     
     
         19 . The aerosol-generating device of  claim 18 , wherein the rotating assembly comprises a bearing disk and a sealing ring fixedly connected to the bearing disk,
 wherein the bearing disk comprises a bearing plate and a first inner tube extending from a first side of the bearing plate,   wherein the mouthpiece is in communication with the first inner tube,   wherein the bearing disk is provided with an air guide hole,   wherein the air guide hole extends from a side wall of the first inner tube to a limiting block and reaches a second side of the bearing plate,   wherein the sealing ring is provided with a through vent hole, the vent hole being in communication with the air guide hole correspondingly,   wherein the airflow detection assembly comprises an airflow-sensor and is provided with an airflow-sensor channel, a first end of the airflow-sensor channel comprising an annular opening, the annular opening always being in communication with the vent hole, the airflow-sensor being arranged at a second end of the airflow-sensor channel, and   wherein the detection airway comprises the airflow-sensor channel, the vent hole, the air guide hole, an inner cavity of the first inner tube, and an inner cavity of the mouthpiece.   
     
     
         20 . The aerosol-generating device of  claim 19 , wherein a side of the sealing ring that faces away from the bearing disk is provided with an annular air groove,
 wherein the annular air groove is in communication with the annular opening correspondingly, and   wherein the annular opening is always in communication with the vent hole through the annular air groove.