Porous ceramic atomization core, method for preparing the same and atomization device

Abstract

The present disclosure provides a porous ceramic atomizing core, a method for preparing a porous ceramic atomizing core, and an atomizing device. The porous ceramic atomization core includes: a porous ceramic body having a porosity of about 30 to about 55% and a pore diameter of about 10 μm to about 45 μm, the porous ceramic body being provided with an atomization through hole; and a heating element provided in the atomization through hole and including a first electrode, a second electrode, and a heating mesh, the first electrode and the second electrode being parallel to an axis of the atomization through hole, a gap being formed between the first electrode and the second electrode, the heating mesh being arc-shaped and extending along a circumferential direction of the atomization through hole, and a surface of the heating mesh abutting against an inner wall of the atomization through hole.

What is claimed is: 
     
         1 . A porous ceramic atomization core, comprising:
 a porous ceramic body having a porosity of about 30% to about 55% and a pore diameter of about 10 μm to about 45 μm, the porous ceramic body being provided with an atomization through hole extending through both ends thereof; and   a heating element provided in the atomization through hole, the heating element comprising a first electrode, a second electrode, and a heating mesh, the first electrode and the second electrode being parallel to an axis of the atomization through hole, a gap being formed between the first electrode and the second electrode, two ends of the heating mesh being connected to the first electrode and the second electrode, respectively, the heating mesh being arc-shaped and extending along a circumferential direction of the atomization through hole, and a surface of the heating mesh abutting against an inner wall of the atomization through hole.   
     
     
         2 . The porous ceramic atomization core according to  claim 1 , wherein the porosity and/or pore diameter of the porous ceramic body is proportional to a mesh density of the heating mesh. 
     
     
         3 . The porous ceramic atomization core according to  claim 1 , wherein the heating element further comprises a first pin and a second pin, the first pin is connected to the first electrode and extends out of the atomization through hole, and the second pin is connected to the second electrode and extends out of the atomization through hole. 
     
     
         4 . The porous ceramic atomization core according to  claim 1 , wherein the heating mesh is formed by interweaving heating wires, a length of the heating wires is about 10 mm to about 50 mm, a thickness of each heating wire is about 0.1 mm to about 0.5 mm, and a resistance of the heating wires is about 0.852 to about 1.602. 
     
     
         5 . The porous ceramic atomization core according to  claim 1 , wherein the porous ceramic body comprises, in weight percentage, about 20% to about 30% of quartz sand, about 10% to about 20% of mullite, about 5% to about 10% of clay, about 15% to about 25% of sintering aid, about 15% to about 35% of pore-forming agent, and about 15% to about 30% of paraffin wax. 
     
     
         6 . The porous ceramic atomization core according to  claim 5 , wherein a particle size of the quartz sand is about 200 mesh to about 300 mesh. 
     
     
         7 . The porous ceramic atomization core according to  claim 5 , wherein a particle size of the mullite is about 100 mesh to about 200 mesh. 
     
     
         8 . The porous ceramic atomization core according to  claim 5 , wherein a particle size of the clay is about 180 mesh to about 250 mesh. 
     
     
         9 . The porous ceramic atomization core according to  claim 5 , wherein a particle size of the sintering aid is about 200 mesh to about 300 mesh. 
     
     
         10 . The porous ceramic atomization core according to  claim 5 , wherein a pore diameter of the pore-forming agent is about 25 μm to about 50 μm. 
     
     
         11 . A method for preparing a porous ceramic atomization core, comprising:
 preparing porous ceramic body slurry;   providing a heating element and a mold;   placing the heating element in the mold, injecting the porous ceramic body slurry into the mold, and demolding the porous ceramic body slurry after being cooled to obtain an atomization core green body; and   degreasing and sintering the atomization core green body, and obtaining the porous ceramic atomization core after heat preservation.   
     
     
         12 . The method according to  claim 11 , wherein the preparing the porous ceramic body slurry comprises:
 weighing raw materials according to the following weight percentage: about 20% to about 30% of quartz sand, about 10% to about 20% of mullite, about 5% to about 10% of clay, about 15% to about 25% of sintering aid, about 15% to about 35% of pore-forming agent, and about 15% to about 30% of paraffin wax;   placing the raw materials into a mixer and mixing the raw materials; and   placing the mixed raw materials into a closed plastic mixer and mixing the mixed raw materials until the mixed raw materials become a flowing slurry to obtain the porous ceramic body slurry.   
     
     
         13 . The method according to  claim 12 , wherein a mixing temperature of the closed plastic mixer is about 70° C. to about 100° C. 
     
     
         14 . The method according to  claim 12 , wherein a particle size of the quartz sand is about 200 mesh to about 300 mesh, a particle size of the mullite is about 100 mesh to about 200 mesh, a particle size of the clay is about 180 mesh to about 250 mesh, a particle size of the mullite is about 100 mesh to about 200 mesh, a particle size of the sintering aid is about 200 mesh to about 250 mesh, and a pore diameter of the pore-forming agent is about 25 μm to about 50 μm. 
     
     
         15 . The method according to  claim 11 , wherein a degreasing and sintering temperature for the atomization core green body is about 700° C. to about 800° C., and a time of the heat preservation is about 0.5 hours to about 2 hours. 
     
     
         16 . The method according to  claim 11 , further comprising: placing the porous ceramic atomizer core into an ultrasonic cleaning machine for cleaning, and drying the porous ceramic atomizer core after cleaning. 
     
     
         17 . An atomization device, comprising the porous ceramic atomization core according to  claim 1 .