Atomizing structure and atomizer

An atomizer, comprising an atomizing structure comprising:

• a ceramic part;
• a heating part, wherein the heating part is connected with the ceramic part;
• and a shell, wherein the ceramic part is arranged in the shell, a side wall of the shell is provided with a liquid inlet region extending through the side wall of the shell;
• wherein, an annular cavity is arranged between an inner wall of the shell and an outer wall of the ceramic part, the annular cavity is arranged around the outer wall of the ceramic part, an atomized liquid is capable of entering the annular cavity through the liquid inlet region, and the atomized liquid in the annular cavity is capable of entering the ceramic part through pores in the ceramic part;
• wherein the ceramic part is integrally molded by sintering;
• wherein the heating part is embedded in the ceramic part through:
• during sintering and molding of the ceramic part, placing the heating part in a mold used for forming the ceramic part of the atomizing structure, and after finishing sintering, the heating part is embedded in the ceramic part, thereby forming an integrated structure of the heating part and the ceramic part;
• wherein the ceramic part is provided with a protruding structure, the protruding structure is arranged between the inner wall of the shell and the outer wall of the ceramic part to form the annular cavity between the inner wall of the shell and the outer wall of the ceramic part;
• and
• wherein the protruding structure is set as an annular structure, the ceramic part is set as a cylinder having an annular first sidewall and two first bottom surfaces, the two first bottom surfaces located at two ends of the ceramic part are respectively provided with the annular structure, and the annular structure is arranged between the outer wall of the ceramic part and the inner wall of the shell to form the annular cavity between the inner wall of the shell and the outer wall of the ceramic part;
• wherein the annular structure is integrally molded with the ceramic part;
• and wherein:
• the annular structure is set as a circular annular structure having an annular second sidewall and two second bottom surfaces;
• or, the ceramic part is set to be in a prism shape, and the annular structure is set as a polygonal annular structure having a polygonal annular second sidewall and two second bottom surfaces;
• wherein the two first bottom surfaces of the ceramic part contact the second bottom surfaces of the annular structure, and wherein the first bottom surface and the second bottom surface share a common center, a diameter of the first bottom surfaces is smaller than a diameter of the second bottom surface, such that the ceramic part has an I-shaped structure.