Heat-not-burn cartridge

Abstract

A heat-not-burn cartridge includes a tandem assembly, a metal sleeve, and a paper sleeve. The tandem assembly includes a plug portion, a smoke generating portion, a cooling portion, and a filter portion that sequentially abut against one another in a first direction. The cooling portion includes a cooling cylinder and a throttle plate. The outer wall of the cooling cylinder is formed with a flow slot. The flow slot penetrates to both ends of the cooling cylinder in the axial direction of cooling cylinder. The throttle plate is disposed in an inner channel of the cooling cylinder. The throttle plate is formed with a flow hole. The metal sleeve sleeves outside the plug portion, the smoke generating portion, and the cooling portion. The paper sleeve sleeves outside the filter portion and part of the metal sleeve.

What is claimed is: 
     
         1 . A heat-not-burn cartridge, comprising:
 a tandem assembly comprising a plug portion, a smoke generating portion, a cooling portion, and a filter portion that sequentially abut against one another in a first direction, wherein the cooling portion comprises a cooling cylinder and a throttle plate, an outer wall of the cooling cylinder is formed with a flow slot, the flow slot penetrates to both ends of the cooling cylinder in an axial direction of the cooling cylinder, the throttle plate is disposed in an inner channel of the cooling cylinder, and the throttle plate is formed with a flow hole;   a metal sleeve sleeving outside the plug portion, the smoke generating portion, and the cooling portion; and   a paper sleeve sleeving outside the filter portion and part of the metal sleeve.   
     
     
         2 . The heat-not-burn cartridge according to  claim 1 , wherein the outer wall of the cooling cylinder is uniformly formed with a plurality of flow slots in a circumferential direction of the cooling cylinder. 
     
     
         3 . The heat-not-burn cartridge according to  claim 2 , wherein the outer wall of the cooling cylinder is provided with a plurality of ribs, and each of the plurality of flow slots is formed between two adjacent ribs of the plurality of ribs. 
     
     
         4 . The heat-not-burn cartridge according to  claim 3 , wherein each of the plurality of ribs extends linearly in the first direction. 
     
     
         5 . The heat-not-burn cartridge according to  claim 3 , wherein each of the plurality of ribs spirals around an axis of the cooling cylinder. 
     
     
         6 . The heat-not-burn cartridge according to  claim 1 , wherein a width of each flow slot of the plurality of flow slots gradually increases from a slot bottom of the each flow slot to a notch of the each flow slot. 
     
     
         7 . The heat-not-burn cartridge according to  claim 1 , wherein the throttle plate is located at a midpoint of the cooling cylinder in the axial direction of the cooling cylinder. 
     
     
         8 . The heat-not-burn cartridge according to  claim 1 , wherein an axial length of the metal sleeve is equal to a sum of a length of the plug portion, a length of the smoke generating portion, and a length of the cooling portion. 
     
     
         9 . The heat-not-burn cartridge according to  claim 1 , wherein an axial length of the paper sleeve is equal to a sum of a length of the filter portion and a length of the cooling portion. 
     
     
         10 . The heat-not-burn cartridge according to  claim 1 , wherein a diameter of the filter portion is equal to an outer diameter of the metal sleeve, and the filter portion abuts against an end of the metal sleeve. 
     
     
         11 . The heat-not-burn cartridge according to  claim 2 , wherein a diameter of the filter portion is equal to an outer diameter of the metal sleeve, and the filter portion abuts against an end of the metal sleeve. 
     
     
         12 . The heat-not-burn cartridge according to  claim 3 , wherein a diameter of the filter portion is equal to an outer diameter of the metal sleeve, and the filter portion abuts against an end of the metal sleeve. 
     
     
         13 . The heat-not-burn cartridge according to  claim 4 , wherein a diameter of the filter portion is equal to an outer diameter of the metal sleeve, and the filter portion abuts against an end of the metal sleeve. 
     
     
         14 . The heat-not-burn cartridge according to  claim 5 , wherein a diameter of the filter portion is equal to an outer diameter of the metal sleeve, and the filter portion abuts against an end of the metal sleeve. 
     
     
         15 . The heat-not-burn cartridge according to  claim 6 , wherein a diameter of the filter portion is equal to an outer diameter of the metal sleeve, and the filter portion abuts against an end of the metal sleeve. 
     
     
         16 . The heat-not-burn cartridge according to  claim 7 , wherein a diameter of the filter portion is equal to an outer diameter of the metal sleeve, and the filter portion abuts against an end of the metal sleeve. 
     
     
         17 . The heat-not-burn cartridge according to  claim 8 , wherein a diameter of the filter portion is equal to an outer diameter of the metal sleeve, and the filter portion abuts against an end of the metal sleeve. 
     
     
         18 . The heat-not-burn cartridge according to  claim 9 , wherein a diameter of the filter portion is equal to an outer diameter of the metal sleeve, and the filter portion abuts against an end of the metal sleeve.