Atomizing structure, atomizer and aerosol generating device

Abstract

An atomizing structure, an atomizer, and an aerosol generating device are provided. The atomizing structure includes a heating element and an atomizing core assembly including an atomizing portion and a guiding portion. The heating element is at least partially embedded in the atomizing portion, the atomizing portion is fixed in the guiding portion, the atomizing portion has an outer wall, the guiding portion has an inner wall portion, and the outer wall is in partial contacted with the inner wall portion, the guiding portion is in contact with an atomizing medium, and is configured to transport the atomizing medium to the atomizing portion through the inner wall portion and the outer wall in sequence, the outer wall forms a first atomizing surface, and a first air channel for transporting the aerosol generated by the first atomizing surface is provided between the outer wall and the inner wall portion.

What is claimed is: 
     
         1 . An atomizing structure, comprising:
 an atomizing core assembly comprising an atomizing portion and a guiding portion, wherein the atomizing portion is fixed in the guiding portion, the atomizing portion has an outer wall, the guiding portion has an inner wall portion, and the outer wall is in partial contact with the inner wall portion, the guiding portion is in contact with an atomizing medium, and is configured to transport the atomizing medium to the atomizing portion through the inner wall portion and the outer wall in sequence, the outer wall forms a first atomizing surface configured to generate aerosol, and a first air channel for transporting the aerosol is provided between the outer wall and the inner wall portion; and   a heating element at least partially embedded in the atomizing portion.   
     
     
         2 . The atomizing structure according to  claim 1 , wherein the outer wall is in surface contact with the inner wall portion, and the outer wall and the inner wall portion are tangent. 
     
     
         3 . The atomizing structure according to  claim 1 , wherein a shortest distance from an inner wall of the atomizing portion to an outer wall portion of the guiding portion is less than or equal to the sum of a distance from the inner wall to the outer wall and a distance from inner wall portion to the outer wall portion. 
     
     
         4 . The atomizing structure according to  claim 1 , wherein at least two first air channels are provided. 
     
     
         5 . The atomizing structure according to  claim 4 , wherein the at least two first air passages are evenly distributed. 
     
     
         6 . The atomizing structure according to  claim 4 , wherein the atomizing portion has a central axis, and the at least two first air channels are evenly distributed relative to the central axis. 
     
     
         7 . The atomizing structure according to  claim 1 , wherein the atomizing portion has an inner wall, the inner wall forms a second atomizing surface and a second air channel configured to transport the aerosol generated on the second atomizing surface. 
     
     
         8 . The atomizing structure according to  claim 7 , wherein a bottom of the atomizing portion is provided with an avoiding groove, the first air channel is in fluid communication with the second air channel through the avoiding groove. 
     
     
         9 . The atomizing structure according to  claim 7 , wherein a top portion of the atomizing portion is provided with a flowing area, the first air channel is in fluid communication with the second air channel through the flowing area. 
     
     
         10 . The atomizing structure according to  claim 7 , wherein the atomizing core assembly is provided with a limiting step above the atomization portion on the guiding portion. 
     
     
         11 . An atomizer, comprising a liquid storing structure and the atomizing structure according to  claim 1 , wherein the liquid storing structure is provided with a liquid storing cavity configured to accommodate the atomizing medium, and the guiding portion is in contact with the atomizing medium;
 the aerosol generated by the heating element passes through the first air channel and the second air channel, and flows out through the liquid storing structure.   
     
     
         12 . The atomizer according to  claim 11 , wherein the liquid storing structure comprises an upper sealing element, a lower sealing element, and a housing, the housing is provided with a mounting cavity, and the upper sealing element covers the housing and is partially mounted in the mounting cavity, the lower sealing element is mounted in the mounting cavity;
 the atomizing structure is provided with a middle sealing element and a ventilation tube, one end of the ventilation tube tightly abuts against the upper sealing element, the other end of the ventilation tube tightly abuts against the middle sealing element, and the ventilation tube abuts against the middle sealing element, the atomizing core assembly, the lower sealing element and the housing sequentially through the middle sealing element.   
     
     
         13 . The atomizer according to  claim 12 , wherein the ventilation tube is provided with a main air channel, the upper sealing element is provided with a first communicating opening, the ventilation tube is at least partially located in the housing, the liquid storing cavity is formed in the mounting cavity and located between in the housing and the ventilation tube, the main air channel is in fluid communication with the first air channel and the second air channel to transport the aerosol, and the aerosol in the main air channel flows out through the first communicating opening. 
     
     
         14 . The atomizer according to  claim 12 , wherein the atomizing structure further comprises a mounting element and a sealing sleeve, the guiding portion is provided with a wire, the lower sealing element is provided with a mounting groove , the mounting element is sleeved on the wire and located in the lower sealing element, the sealing sleeve is sleeved on the lower sealing portion or sleeved in the mounting groove, the mounting element, the lower sealing element, and the sealing sleeve cooperate to enable the lower sealing element to tightly abut against the housing to seal the liquid storing cavity, so that the atomizing medium in the liquid storing cavity only contacts the liquid-absorbing surface of the guiding portion. 
     
     
         15 . The atomizer according to  claim 12 , wherein the housing is provided with at least two electrode mounting seats, each of the electrode mounting seat is provided with an electrode element, the wire is electrically connected to the electrode element in the electrode mounting seat;
 the housing is provided with an air inlet, the air inlet is in fluid communication with the first air channel and the second air channel, respectively.   
     
     
         16 . An aerosol generating device, comprising a power supply and the atomizer according to  claim 10 , wherein the power supply is electrically connected to the atomizer for supplying power to the atomizer. 
     
     
         17 . The aerosol generating device according to  claim 16 , wherein the atomizer further comprising a nozzle structure, the power supply structure comprises a casing, a bracket, a battery, a circuit board, a control element, a connecting end, and a bottom case, the casing is sleeve on a part of the housing, the nozzle structure is sleeve on a part of the housing, the upper sealing element, and the upper sealing element, the nozzle structure blocks the first liquid injecting hole and the second liquid injecting hole, the bracket is fixed in the casing, the battery is mounted to the bracket and is electrically connected to the electrode element, an airflow gap in fluid communication with the air inlet is formed between the bracket, the battery and the casing. 
     
     
         18 . The aerosol generating device according to  claim 17 , wherein the control element comprises a button, a button base and a connector, the button is mounted to the button base and exposed outside the bottom case, the button base is fixed to the circuit board, the connector is electrically connected to the battery through the circuit board, and the button base surrounds and fixes the connector, the button is located on the connector to turn on or off the connector.