Heating assembly, atomizer, and electronic atomization apparatus

Abstract

A heating assembly includes: a substrate having a first surface and a second surface arranged opposite the first surface, the substrate including a heating region and a non-heating region, the heating region being provided with a plurality of first micro-pores, the non-heating region being provided with a plurality of second micro-pores, the plurality of first micro-pores and the plurality of second micro-pores guiding an aerosol-forming material from the first surface to the second surface. The second surface is provided with a plurality of flow channels that are communicated with the plurality of first micro-pores and the plurality of second micro-pores. The aerosol-forming material in the plurality of second micro-pores enters the plurality of first micro-pores through the plurality of flow channels.

What is claimed is: 
     
         1 . A heating assembly, comprising:
 a substrate having a first surface and a second surface arranged opposite the first surface, the substrate comprising a heating region and a non-heating region, the heating region being provided with a plurality of first micro-pores, the non-heating region being provided with a plurality of second micro-pores, the plurality of first micro-pores and the plurality of second micro-pores being configured to guide an aerosol-forming material from the first surface to the second surface,   wherein the second surface is provided with a plurality of flow channels that are communicated with the plurality of first micro-pores and the plurality of second micro-pores, and   wherein the aerosol-forming material in the plurality of second micro-pores is configured to enter the plurality of first micro-pores through the plurality of flow channels.   
     
     
         2 . The heating assembly of  claim 1 , wherein the plurality of flow channels comprises a plurality of first flow channels located in the heating region and a plurality of second flow channels located in the non-heating region,
 wherein the plurality of first flow channels run through surfaces of the plurality of first micro-pores, and   wherein the plurality of second flow channels run through surfaces of the plurality of second micro-pores.   
     
     
         3 . The heating assembly of  claim 2 , wherein the heating region is provided with a plurality of first grooves extending along a first direction and a plurality of second grooves extending along a second direction, the plurality of first grooves and the plurality of second grooves being arranged in an intersecting manner, each first groove of the plurality of first grooves and each second groove of the plurality of second grooves forms the first flow channel, and/or
 wherein the non-heating region is provided with a plurality of third grooves extending along a third direction and a plurality of fourth grooves extending along a fourth direction, the plurality of third grooves and the plurality of fourth grooves being arranged in an intersecting manner, each third groove of the plurality of third grooves and each fourth groove of the plurality of fourth grooves forms the second flow channel.   
     
     
         4 . The heating assembly of  claim 3 , wherein the plurality of first micro-pores are distributed in an array, each first groove corresponds to one or more rows of first micro-pores of the plurality of first micro-pores, and each second groove corresponds to one or more columns of first micro-pores, and/or
 wherein the plurality of second micro-pores are distributed in an array, each third groove corresponds to one or more rows of second micro-pores of the plurality of second micro-pores, and each fourth groove corresponds to one or more columns of second micro-pores.   
     
     
         5 . The heating assembly of  claim 2 , wherein a width of the first flow channel ranges from 1 μm to 100 μm, and/or
 wherein a width of the second flow channel ranges from 1 μm to 100 μm. 
 
     
     
         6 . The heating assembly of  claim 5 , wherein a ratio of the width of the first flow channel to a pore size of the first micro-pore is less than or equal to 1.2, and/or
 wherein a ratio of the width of the second flow channel to a pore size of the second micro-pore is less than or equal to 1.2.   
     
     
         7 . The heating assembly of  claim 2 , wherein a depth of the first flow channel ranges from 1 μm to 200 μm, and/or
 wherein a depth of the second flow channel ranges from 1 μm to 200 μm. 
 
     
     
         8 . The heating assembly of  claim 2 , wherein a depth of the second flow channel is greater than a depth of the first flow channel. 
     
     
         9 . The heating assembly of  claim 1 , wherein a pore size of the first micro-pore ranges from 1 μm to 100 μm, and/or
 wherein a pore size of the second micro-pore ranges from 1 μm to 100 μm. 
 
     
     
         10 . The heating assembly of  claim 1 , wherein each first micro-pore of the plurality of first micro-pores is a first elongated hole, a width of the first elongated hole ranging from 1 μm to 100 μm, and a length-width ratio of the first elongated hole being greater than 1.5, and/or
 wherein each second micro-pore the plurality of second micro-pores is a second elongated hole, a width of the second elongated hole ranging from 1 μm to 100 μm, and a length-width ratio of the second elongated hole being greater than 1.5. 
 
     
     
         11 . The heating assembly of  claim 1 , wherein a porosity of the heating region is less than a porosity of the non-heating region. 
     
     
         12 . The heating assembly of  claim 11 , wherein the porosity of the heating region ranges from 15% to 40%, and/or
 wherein the porosity of the non-heating region ranges from 20% to 80%.   
     
     
         13 . The heating assembly of  claim 11 , wherein a ratio of the porosity of the non-heating region to the porosity of the heating region is 1 to 2. 
     
     
         14 . The heating assembly of  claim 11 , wherein a pore size of a first micro-pore of the plurality of first micro-pores is equal to a pore size of a second micro-pore of the plurality of second micro-pores, and
 wherein a pore center distance between neighboring first micro-pores of the plurality of first micro-pores is greater than a pore center distance between neighboring second micro-pores of the plurality of second micro-pores.   
     
     
         15 . The heating assembly of  claim 11 , wherein a pore center distance between neighboring first micro-pores of the plurality of first micro-pores is equal to a pore center distance between neighboring second micro-pores of the plurality of second micro-pores, and
 wherein a pore size of the first micro-pore of the plurality of first micro-pores is less than a pore size of the second micro-pore of the plurality of second micro-pores.   
     
     
         16 . The heating assembly of  claim 1 , further comprising:
 a heating element comprising an independent element disposed in the heating region, or   wherein the substrate has a conductive function.   
     
     
         17 . The heating assembly of  claim 1 , wherein the substrate comprises a dense substrate. 
     
     
         18 . An atomizer, comprising:
 a liquid storage cavity configured to store an aerosol-forming material; and   the heating assembly of  claim 1 , the heating assembly being in fluid communication with the liquid storage cavity.   
     
     
         19 . An electronic atomization apparatus, comprising:
 the atomizer of claim  18 .