Heating body and preparation method therefor, vaporizer, and electronic device

Abstract

A heating body includes: a porous ceramic body having a preheating member, the preheating member including a porous infrared ceramic structure; and a heating member located on the porous ceramic body, the heating member providing heat for the preheating member and vaporizing preheated liquid. In an embodiment, the porous ceramic body includes a substrate. The preheating member is located on the substrate. The substrate includes a porous ceramic structure. The heating member is completely located in the preheating member and is close to the substrate, or is located at a junction of the substrate and the preheating member.

What is claimed is: 
     
         1 . A heating body, comprising:
 a porous ceramic body comprising a preheating member, the preheating member comprising a porous infrared ceramic structure; and   a heating member located on the porous ceramic body, the heating member being configured to provide heat for the preheating member and to vaporize preheated liquid.   
     
     
         2 . The heating body of  claim 1 , wherein the porous ceramic body comprises a substrate,
 wherein the preheating member is located on the substrate,   wherein the substrate comprises a porous ceramic structure, and   wherein the heating member is completely located in the preheating member and is close to the substrate, or is located at a junction of the substrate and the preheating member.   
     
     
         3 . The heating body of  claim 2 , wherein the substrate comprises a hollow porous ceramic structure,
 wherein the preheating member comprises a hollow porous infrared ceramic structure, and   wherein the substrate and the preheating member are nested with each other.   
     
     
         4 . The heating body of  claim 3 , wherein the preheating member is sleeved on the substrate, and
 wherein the heating member is spirally distributed on the substrate.   
     
     
         5 . The heating body of  claim 4 , wherein the heating member comprises a heating portion and an infrared heating layer located on the heating portion. 
     
     
         6 . The heating body of  claim 5 , wherein a thickness of the infrared heating layer ranges from 20 μm to 500 μm. 
     
     
         7 . The heating body of  claim 3 , wherein the substrate is in a shape of a hollow cylinder,
 wherein the preheating member is in a shape of a hollow cylinder,   wherein the preheating member is sleeved on the substrate,   wherein an inner diameter of the substrate ranges from 1.5 mm to 3 mm, and   wherein an outer diameter of the preheating member ranges from 2.5 mm to 9 mm.   
     
     
         8 . The heating body of  claim 2 , wherein a surface of the substrate close to the preheating member recesses to form a first groove,
 wherein a surface of the preheating member close to the substrate recesses to form a second groove corresponding to the first groove,   wherein the first groove and the second groove form a heating cavity, and   wherein the heating member is accommodated in the heating cavity.   
     
     
         9 . The heating body of  claim 1 , wherein a porosity of the preheating member ranges from 30% to 80%. 
     
     
         10 . The heating body of  claim 1 , wherein a median pore size of the preheating member ranges from 10 μm to 100 μm. 
     
     
         11 . The heating body of  claim 1 , wherein a radiation wavelength of the preheating member ranges from 5 μm to 20 μm. 
     
     
         12 . The heating body of  claim 1 , wherein a preheating temperature of the preheating member ranges from 40° C. to 90° C. 
     
     
         13 . The heating body of  claim 1 , wherein a resistance value of the heating member ranges from 0.5Ω to 1.5 Ω. 
     
     
         14 . The heating body of  claim 2 , wherein a porosity of the substrate ranges from 30% to 80%. 
     
     
         15 . The heating body of  claim 2 , wherein a median pore size of the substrate ranges from 10 m to 100 μm. 
     
     
         16 . A method for preparing the heating body of  claim 1 , the method comprising:
 integrally forming, of a preset shape, the heating member and a raw material configured to prepare the porous ceramic body to prepare a green body; and   sintering the green body after degumming to prepare the heating body.   
     
     
         17 . A vaporizer, comprising:
 a liquid storage cavity configured to store liquid; and   the heating body of  claim 1 , the heating body being configured to absorb the liquid in the liquid storage cavity and vaporize the liquid.   
     
     
         18 . An electronic device, comprising:
 a power supply; and   the vaporizer of  claim 17 ,   wherein the power supply is electrically connected to the vaporizer to supply power to the vaporizer.