Heat-not-burn cartridge

Abstract

A heat-not-burn cartridge is provided. The heat-not-burn cartridge includes a tube, a closing portion, a smoke generating portion, a cooling portion, and a filter portion. The tube has a first end and a second end opposite to the first end. The closing portion is configured to seal the first end. The smoke generating portion is accommodated in the tube and disposed adjacent to the first end. The cooling portion is accommodated in the tube and disposed adjacent to the smoke generating portion. The filter portion is accommodated in the tube and disposed at the second end. The filter portion is spaced apart from the cooling portion to define an accommodating cavity.

1 . A heat-not-burn cartridge comprising:
 a tube having a first end and a second end opposite to the first end;   a closing portion configured to seal the first end;   a smoke generating portion accommodated in the tube and disposed adjacent to the first end;   a cooling portion accommodated in the tube and disposed adjacent to the smoke generating portion; and   a filter portion accommodated in the tube and disposed at the second end, wherein the filter portion is spaced apart from the cooling portion to define an accommodating cavity.   
     
     
         2 . The heat-not-burn cartridge of  claim 1 , wherein in a direction from the first end to the second end, a ratio of a length L 1  of the accommodating cavity to a length L 0  of the tube satisfies: 30%≤L 1 /L 0 ≤35%. 
     
     
         3 . The heat-not-burn cartridge of  claim 1 , wherein the cooling portion defines uniformly distributed gas grooves in a periphery of the cooling portion, the gas grooves each penetrate through the cooling portion in a direction from the first end to the second end, and the gas grooves each are in communication with the accommodating cavity. 
     
     
         4 . The heat-not-burn cartridge of  claim 3 , wherein the cooling portion defines a first accommodating space and a second accommodating space opposite to each other in the direction from the first end to the second end, the first accommodating space is closer to the smoke generating portion than the second accommodating space, the first accommodating space is used for accommodating the smoke generating portion, and the second accommodating space is in communication with the accommodating cavity. 
     
     
         5 . The heat-not-burn cartridge of  claim 4 , wherein the cooling portion further defines a gas hole, and the gas hole is in communication with the first accommodating space and the second accommodating space. 
     
     
         6 . The heat-not-burn cartridge of  claim 5 , wherein in a preset cross-sectional direction, a ratio of a sum of cross-sectional areas S 1  of the gas grooves and a cross-sectional area S 2  of the gas hole to a cross-sectional area S 0  of the cooling portion satisfies: 15%≤(S 1 +S 2 )/S 0 ≤20%, wherein the preset cross-sectional direction is perpendicular to the direction from the first end to the second end. 
     
     
         7 . The heat-not-burn cartridge of  claim 5 , wherein an outer diameter D 1  of the cooling portion is larger than an inner diameter D 0  of the tube, the cooling portion is in an interference fit with the tube, and the cooling portion is fixed to the tube. 
     
     
         8 . The heat-not-burn cartridge of  claim 7 , wherein the cooling portion defines a chamfer at each of both ends of the cooling portion, and an outer diameter of the cooling portion at the chamfer is smaller than the inner diameter of the tube. 
     
     
         9 . The heat-not-burn cartridge of  claim 7 , wherein a length L 2  of the cooling portion is larger than the outer diameter D 1  of the cooling portion. 
     
     
         10 . The heat-not-burn cartridge of  claim 1 , wherein a material of the cooling portion comprises at least one of poly(ether-ether-ketone) (PEEK), polyphenylene sulfone resins (PPSU), poly(ethylene imine) (PEI), polyamide (PA), polyoxymethylene (POM), or silica gel. 
     
     
         11 . The heat-not-burn cartridge of  claim 1 , wherein a material of the tube comprises one or more of white cardboard paper of 50 g/m 2 -200 g/m 2  or kraft paper of 50 g/m 2 -200 g/m 2 . 
     
     
         12 . The heat-not-burn cartridge of  claim 1 , wherein a length L 0  of the tube satisfies: 42 mm≤L 0 ≤46 mm. 
     
     
         13 . The heat-not-burn cartridge of  claim 1 , wherein an inner diameter D 0  of the tube satisfies: 6.4 mm≤D 0 ≤6.65 mm, and an outer diameter D 00  of the tube satisfies: 6.9 mm≤D 00 ≤7.1 mm. 
     
     
         14 . The heat-not-burn cartridge of  claim 1 , wherein a material of the closing portion comprises one or more of silk tissue paper of 10 g/m 2 -50 g/m 2 , highly air-permeable paper of 10 g/m 2 -50 g/m 2 , or butter paper of 45 g/m 2 -105 g/m 2 . 
     
     
         15 . The heat-not-burn cartridge of  claim 1 , wherein a material of the smoke generating portion comprises an aerosol-generating substrate. 
     
     
         16 . The heat-not-burn cartridge of  claim 1 , wherein a packing length L 3  of the smoke generating portion accommodated in the tube satisfies: 13 mm≤L 3 ≤18 mm. 
     
     
         17 . The heat-not-burn cartridge of  claim 1 , wherein the cooling portion is spaced apart from the smoke generating portion. 
     
     
         18 . The heat-not-burn cartridge of  claim 1 , wherein the cooling portion abuts against the smoke generating portion. 
     
     
         19 . The heat-not-burn cartridge of  claim 1 , wherein a material the filter portion comprises a food-grade porous fluffy material. 
     
     
         20 . The heat-not-burn cartridge of  claim 1 , wherein an outer diameter of the filter portion is larger than an inner diameter of the tube.