Atomizing core, atomizer, and electronic cigarette

Abstract

An atomizing core includes an atomizing body including a porous material. The atomizing body includes a first side surface, a second side surface, and a heating element. The first side surface is configured to absorb e-liquid. The second side surface is configured for smoke emission. The heating element is disposed on the second side surface.

What is claimed is: 
     
         1 . An atomizing core, comprising an atomizing body comprising a porous material; wherein the atomizing body comprises a first side surface, a second side surface, and a heating element; the first side surface is configured to absorb e-liquid; the second side surface is configured for smoke emission; the heating element is disposed on the second side surface. 
     
     
         2 . The atomizing core of  claim 1 , wherein the heating element is embedded in or exposed out of the second side surface. 
     
     
         3 . The atomizing core of  claim 2 , wherein the heating element is in the shape of a string and/or a sheet embedded in or exposed out of the second side surface; or the heating element is in the form of a metal layer or a conductive pathway coated on the second side surface. 
     
     
         4 . The atomizing core of  claim 1 , wherein the heating element comprises conductive metal, graphene, carbon nanotubes, carbon nanofibers, or a combination thereof; and/or the atomizing body comprises ceramic, mica, glass, or a combination thereof. 
     
     
         5 . The atomizing core of  claim 2 , wherein the heating element is disposed outside the second side surface and is coated with a passivation layer; and/or a ratio of a distance between the heating element and the second side surface to a thickness of the heating element is ≤1/3. 
     
     
         6 . The atomizing core of  claim 5 , wherein the passivation layer comprises gold, glass, ceramic, mica, or a combination thereof. 
     
     
         7 . The atomizing core of  claim 1 , wherein the atomizing body further comprises a plurality of macropores and a plurality of micropores disposed around the plurality of macropores; the plurality of micropores is configured to absorb the e-liquid; the plurality of macropores is configured to diffuse the e-liquid from the plurality of micropores to the second side surface. 
     
     
         8 . The atomizing core of  claim 7 , wherein the plurality of macropores has a diameter within a range of 0.05-0.5 mm and the plurality of micropores has a diameter within a range of 0.01-10 μm. 
     
     
         9 . The atomizing core of  claim 1 , wherein the atomizing body further comprises a thermostat configured to maintain an atomization temperature of the e-liquid; or the heating element is a resistive heating element, and the atomization temperature of the e-liquid is maintained through operations comprising measuring a resistance of the heating element and supplying a corresponding current to the heating element. 
     
     
         10 . An atomizer, comprising the atomizing core of  claim 1  and an e-liquid tank configured to supply the e-liquid for the atomizing core; wherein the e-liquid tank comprises an air passage and an e-liquid chamber configured to store the e-liquid; the atomizing body is disposed between the e-liquid chamber and the air passage; the second side surface is disposed towards the air passage; and
 the first side surface is disposed towards the e-liquid chamber. 
 
     
     
         11 . The atomizer of  claim 10 , wherein the e-liquid tank is hollow and comprises a bottom opening; the atomizer further comprises a seal member disposed in the bottom opening to seal the e-liquid tank; the e-liquid tank further comprises an open top functioning as a mouthpiece; the mouthpiece extends downward to form an air conduction tube; the seal member comprises a seal body and a hollow column protruding from the seal body to the air conduction tube; the hollow column communicates with the air conduction tube; the air conduction tube, the hollow column, and the seal body form the e-liquid chamber; the hollow column and/or the air conduction tube comprises a peripheral wall and an e-liquid inlet disposed on the peripheral wall; and the atomizing body is next to the e-liquid inlet or is opposite to the e-liquid inlet. 
     
     
         12 . The atomizer of  claim 11 , wherein the atomizer further comprises a first seal portion and a second seal portion; the first seal portion is disposed between the air conduction tube and the hollow column; the seal body comprises a concave portion communicating with the hollow column; the second seal portion is disposed in the concave portion; the atomizing body is in the shape of a sheet and is disposed between the first seal portion and the second seal portion; the e-liquid inlet is disposed on the hollow column; the concave portion comprises a bottom wall and a first air inlet disposed on the bottom wall; the first seal portion comprises a second air inlet; an air chamber is defined by the first seal portion, the atomizing body, the second seal portion, and the seal member; the air chamber communicates with the first air inlet and the second air inlet; and the air conduction tube, the second air inlet, the air chamber, and the first air inlet constitute the air passage. 
     
     
         13 . The atomizer of  claim 12 , wherein
 the atomizer further comprises a first conductive member disposed in the bottom opening of the e-liquid tank to abut against the seal member; the atomizer further comprises at least one groove disposed between the first conductive member and the seal member; the e-liquid tank further comprises an outer wall and at least one third air inlet disposed on the outer wall; the at least one groove communicates with the at least one third air inlet and the air passage;   the first conductive member comprises a bottom plate; the bottom plate comprises a through hole and a hollow cylinder communicating with the through hole; the atomizer further comprises a second conductive member and an insulating ring; the second conductive member is disposed into the hollow cylinder of the first conductive member; the insulating ring is disposed between the first conductive member and the second conductive member; and   the heating element is connected to at least one first pin and at least one second pin; the at least one first pin and the at least one second pin are electrically connected to the first conductive member and the second conductive member, respectively.   
     
     
         14 . The atomizer of  claim 10 , wherein the atomizing body is in the form of a hollow tube; the hollow tube comprises a hollow channel constituting a part of the air passage; the atomizing body constitutes a part of a side wall of the e-liquid chamber. 
     
     
         15 . An electronic cigarette, comprising the atomizer of  claim 10  and a battery assembly; wherein the atomizer is fixedly or detachably connected to the battery assembly.